{"title":"Gluing leather — COLOURLOCK","description":"\u003ch2 id=\"speakable-headline\"\u003eGluing leather is about redirecting the pull\u003c\/h2\u003e\n\n\u003cblockquote id=\"speakable-summary\"\u003e\n  \u003cp\u003e\u003cem\u003eA leather repair doesn't hold because someone pressed the visible torn edges hard together. It holds when a clean backing patch spreads the movement over a wider area and the front side is left with nothing but fine build-up work.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003cp id=\"speakable-definition\"\u003e\u003cstrong\u003eGluing leather\u003c\/strong\u003e is a repair job for surfaces that move. A seat folds as you drop into it, a bolster gets dragged sideways, a furniture cover gives under weight. The bond has to travel with that movement. In this collection, \u003ca href=\"\/products\/koch-chemie-colourlock-leather-glue-solvent-free-losemittelfreier-kleber-lederreparaturarbeiten\"\u003eCOLOURLOCK Leather Glue Solvent Free\u003c\/a\u003e handles repair work over an area, while \u003ca href=\"\/products\/koch-chemie-colourlock-rep-glue-spezialkleber-leder\"\u003eRep Glue\u003c\/a\u003e is meant for small fixes. The \u003ca href=\"\/products\/koch-chemie-colourlock-leather-glue-repair-set\"\u003eLeather Glue Repair Set\u003c\/a\u003e bundles the whole route. Which branch fits comes down to the shape of the damage.\u003c\/p\u003e\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDay-to-day from Detailing1:\u003c\/strong\u003e Photograph the direction of pull before any glue gets opened. Move the bolster only as far as it works in everyday use and watch which way the tear opens. The backing patch has to catch exactly that movement. Go by the resting shape alone and you can easily build the repair against the wrong force.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eName the damage first:\u003c\/strong\u003e a tear, a lifted layer, an open seam and missing material don't ask for the same bond.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarry it from behind:\u003c\/strong\u003e a stable backing spreads the pull instead of collecting it on one narrow edge.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlue is only the base:\u003c\/strong\u003e once it has cured, filling, levelling, colour and protection follow as separate steps where they are needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTear or open seam: what is glue allowed to do?\u003c\/h3\u003e\n\n\u003cp\u003eThe most important call happens before any glue gets opened. A tear runs through the leather itself. An open seam sits on a structural joint and can involve thread, stitch holes and tension. A lifted layer is only partly still sitting on its base. Missing material leaves a gap. From a step back those four pictures look alike, and every one of them needs a different answer.\u003c\/p\u003e\n\n\u003cp\u003eOn a load-bearing seam that has come apart, the thread carries the force. Glue can quieten the visible opening for a while, but it is no substitute for a properly sewn seam. Glue over it and you can block the stitch holes and make the later work harder. That is where the glue route ends and a trimmer takes over.\u003c\/p\u003e\n\n\u003cp\u003eA small cut or tear, on the other hand, has plenty to gain from a backing patch as long as the area around it is still sound. Don't tug at the edges to see how big it is — that only grows the damaged zone. Look at the panel relaxed and again under light load, mark up loose fibres, and check whether the damage runs into a seam or a perforation.\u003c\/p\u003e\n\n\u003cp\u003eMissing material can't be replaced with a thick bed of glue. Glue joins what is already there; it isn't a flexible filler for an open gap. Only a load-bearing base lets you build the front up thinly with proper repair materials. The more bulk comes from glue alone, the more clearly a hard, shiny island can show through later.\u003c\/p\u003e\n\n\u003cp\u003eThe material type counts too. Pigmented smooth leather, synthetic leather and coated split leather are built from different layers. A tacky, crumbling finish gives you nothing reliable to bond to. Glue onto a loose surface and what lets go later isn't necessarily the glue — it's the weakened layer underneath. Stability comes before product choice.\u003c\/p\u003e\n\n\u003cp\u003eTrace the damage on a photo and note where it ends. A tear that runs out into a perforation spreads tension differently from a line across a closed panel. If the end sits right on piping or a seam, everyday flex bites harder there than in the calm middle of the panel. That geometry decides how far a load-bearing backing has to reach, and whether the repair is still safely reachable at all.\u003c\/p\u003e\n\n\u003ch3\u003eThe backing patch carries the movement\u003c\/h3\u003e\n\n\u003cp\u003eOn a tear repair over any real area, the structure that actually carries the load sits behind the visible surface. A suitable backing fabric or repair material bridges the damage from the inside and spreads the load into sound leather either side. The torn edge then no longer has to take every bend on its own.\u003c\/p\u003e\n\n\u003cp\u003eAccess decides whether that works cleanly. Under a seat cover there can be room to feed a backing patch in; on tight edges or bonded foam build-ups the back face is hard to get at. Forcing the opening wider does make room, and it grows the tear at the same time. Plan the way in, the alignment and the tools before any glue goes on.\u003c\/p\u003e\n\n\u003cp\u003eThe backing has to lie flat. Creases and twisted edges telegraph through the soft surface later and pile the tension up all over again. Set it out dry and check that it reaches sound leather on both sides of the damage. Only once you can put it back in the same position every time do you start the bonding step, to the current product instructions.\u003c\/p\u003e\n\n\u003cp\u003eThe back face needs to be as clean as the front. Loose fibres, dust, old glue residue and grease all shrink the contact area. Take off only what comes away without stressing the material. Unknown old bonds don't get attacked with aggressive solvents, because those can go through leather, finish, foam or the backing laminate.\u003c\/p\u003e\n\n\u003cp\u003eThe best backing patch stays invisible and stays flexible. It doesn't finish the tear cosmetically on the spot; it gives you a base that holds up. Keeping that job plain heads off a common mistake: the visible surface gets levelled and coloured while underneath, every movement is still pulling on the same two edges.\u003c\/p\u003e\n\n\u003cp\u003eBacking and top material also have to meet with nothing trapped between them. A crumb, a hard lump of old glue or a rolled-up thread can show up later as a small raised bump. Run a blunt, suitable tool over the back face and lift off what is loose. If something resists, it doesn't get ripped out blind; it may well be part of the original build.\u003c\/p\u003e\n\n\u003ch3\u003eLeather Glue builds the base over an area\u003c\/h3\u003e\n\n\u003cp\u003eCOLOURLOCK Leather Glue Solvent Free is the glue in this line-up for leather repair work over an area. Its place is where existing material and a suitable backing get bonded together. How you apply it, which materials it is cleared for and how it dries all follow the current product instructions.\u003c\/p\u003e\n\n\u003cp\u003eLay the glue down sparingly on the contact zones you planned, not as a thick filling in the visible gap. An even film positions far better than a blob that squeezes out of the edge the moment you press. Excess on the front side makes the later levelling and colour match harder than it needs to be.\u003c\/p\u003e\n\n\u003cp\u003eSet the backing in without twisting it and bring the torn edges back to their natural position. They shouldn't overlap, and they shouldn't be dragged into an unnaturally closed line. A seat that only looks perfect with nobody in it and goes tight at the first movement isn't ready.\u003c\/p\u003e\n\n\u003cp\u003eWhile the two faces come together, the repair wants quiet, even contact. Pressure on one point can leave a dent or an island of glue. Keep tools clean and free of sharp edges, and check anything that touches the top face for marks before it goes near the leather. The glue works between the surfaces; pressure is only there to hold them where they belong.\u003c\/p\u003e\n\n\u003cp\u003eOnce it is on, you don't test it early. Curing is a process of its own, and the product instructions set the time and the conditions for it. Any movement before that point can shift the backing and leave a weak spot you will barely see. Patience here isn't a comfort, it is part of the strength.\u003c\/p\u003e\n\n\u003ch3\u003eRep Glue stays with the small fix\u003c\/h3\u003e\n\n\u003cp\u003eRep Glue has a tighter role in this collection: small damage and local fixes. That doesn't make it a stronger or a weaker version of Leather Glue. Geometry calls it. A short, clearly bounded spot needs far less build-up across an area than a longer tear that flexes again and again.\u003c\/p\u003e\n\n\u003cp\u003eA small lifted edge can be fixed locally as long as its base is sound and clean. Work out first why it lifted. A one-off cut puts you somewhere quite different from a finish that is breaking up in several places. Stick down the first flake you can see while the area around it keeps delaminating, and the problem simply moves along.\u003c\/p\u003e\n\n\u003cp\u003eDon't run Rep Glue straight from the nozzle onto a visible edge. A fine, suitable tool helps you hit the contact zone and keeps the excess off. How you actually apply it stays tied to the product instructions. You are after a clean bond, not a visible bead of glue.\u003c\/p\u003e\n\n\u003cp\u003eSuperglue is no substitute. A rigid, brittle bond can turn into a hard ridge on leather that moves. On top of that, shine, discolouration or excess you can't get off again all weigh on the later repair. Grabbing the household bottle saves you minutes and can hobble the proper build-up for good.\u003c\/p\u003e\n\n\u003cp\u003eIf the small spot sits in a hard-working seat bolster, you judge even a local fix with the panel moving. If the damage opens further under gentle everyday flex, it isn't local any more. Then the diagnosis leads back to a backing patch, or to a specialist.\u003c\/p\u003e\n\n\u003cp\u003eThe Repair Set earns its place when you are setting up the whole run of steps rather than one single fix. It still doesn't make the call about the shape of the damage for you. Check the route it contains against your material and what you found, and don't bolt on a method from some other repair. A set is a tidy selection of tools, not a blanket green light for any size of tear.\u003c\/p\u003e\n\n\u003ch3\u003ePressure without slipping is what decides it\u003c\/h3\u003e\n\n\u003cp\u003eGluing isn't just product and surface. The bond has to stay in the right position through its early phase. On a flat piece of furniture upholstery that works differently than on a vertical seat bolster. Gravity, the push of the foam and the leather's own spring-back all have a say.\u003c\/p\u003e\n\n\u003cp\u003ePlan a clamping setup that doesn't leave a fresh mark of its own. Hard clamps, narrow weights or sharp-edged helpers can damage the finish. A wide, clean, padded spread of pressure is usually easier to keep even. It mustn't squeeze the glue out of the joint or shift the torn edges against each other.\u003c\/p\u003e\n\n\u003cp\u003eMarks outside the visible area help you hold the starting position. Check edges, grain direction and the surface embossing before you build any pressure. Fix one side even slightly twisted and the later filler may quieten the gap, but the unnatural tension stays in the material.\u003c\/p\u003e\n\n\u003cp\u003eA dry run without glue shows you whether tools and hands actually get to the spot. Walk every step through once dry: feed the backing in, line it up, close the edge, spread the pressure, take the tools back out. Whatever snags on the dry run will not get any neater with glue going off and the clock running.\u003c\/p\u003e\n\n\u003cp\u003eWhile it cures, the area stays out of use. Nobody sits in that car seat, nobody keeps working that furniture edge. Test later with a small, natural bend first and keep an eye on the leather around it. If it isn't the bond that goes but the material next to it, that substance was the real limit all along.\u003c\/p\u003e\n\n\u003cp\u003eThe first test isn't about maximum force. Move the spot step by step towards the way it gets used normally and stop after each small change. If the edge stays level and the leather around it follows without a new line, carry on checking. If the surface lifts or the backing starts telegraphing through, the cosmetic work waits and you go back to judging the base that carries the load.\u003c\/p\u003e\n\n\u003ch3\u003eGluing stops short of colour and protection\u003c\/h3\u003e\n\n\u003cp\u003eOnce it has cured through, you check the repair from three angles: does the backing patch carry, do the edges sit naturally, and does the leather around it still move? Only when that base is right does the visible work start. A joint that is still wet or only just clamped doesn't get buried under filler in a hurry.\u003c\/p\u003e\n\n\u003cp\u003eDips and transitions get built up thin and levelled in a repair step of their own. Colour matching and protection to suit the material come after that. Keeping that order keeps every job readable: glue bonds, filler shapes, colour blends in, protection closes the surface.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003ca href=\"\/collections\/koch-chemie-colourlock-ratgeber-risse-loecher\"\u003eCOLOURLOCK guide to cracks and holes\u003c\/a\u003e helps you place the damage as a whole. The neighbouring cleaning, colour and protection steps sit in the \u003ca href=\"\/collections\/koch-chemie-colourlock\"\u003eCOLOURLOCK brand world\u003c\/a\u003e. Which of them follow is decided by condition alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGluing leather\u003c\/strong\u003e also stops where safety or structure is involved. Load-bearing seams, very large missing areas, crumbling panels and foam build-ups you cannot get behind belong with a trimmer or a leather specialist. A clear line protects more than a cosmetically closed seam with nothing underneath to carry it.\u003c\/p\u003e\n\n\u003cp\u003eThe last test repeats the movement from that first photo: same direction, only a little travel to begin with, then step by step more everyday load. If the spot stays closed, the transition doesn't build up hard and the leather around it follows without a new tension line, the invisible base is carrying. Only now is colour allowed to settle the eye. The bond had already done its job before the finish ever looked good.\u003c\/p\u003e","products":[{"product_id":"koch-chemie-colourlock-leather-glue-solvent-free-losemittelfreier-kleber-lederreparaturarbeiten","title":"COLOURLOCK \"Leather Glue\" (Solvent Free) Solvent-Free Adhesive for Leather Repairs","description":"\u003ch2\u003eCOLOURLOCK Leather Glue (Solvent Free) — solvent-free adhesive for leather repairs\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003eWhat does COLOURLOCK Leather Glue Solvent Free do? — It bonds leather, faux leather and fabric for good: a flexible bond with no solvent smell, made for tears, lifting edges and edge repairs across car, furniture and fashion work.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eCOLOURLOCK Leather Glue (Solvent Free)\u003c\/strong\u003e is the safe, odour-free specialist adhesive that cures flexible on leather, faux leather and textile backings. It's spot-on for tears, open seams, lifting edges, flaked-off bits of leather or backing patches during repairs, and it won't stiffen or discolour the material. The bond stays elastic for good, so it's ideal for any leather that flexes and takes load — seat bolsters, steering wheels, furniture edges, bags or shoe areas.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible leather adhesive with no solvents\u003c\/strong\u003e – No smell, and the leather never dries out or goes stiff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong, lasting bond\u003c\/strong\u003e – Spot-on for tears, lifting edges and backing patches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks just about anywhere\u003c\/strong\u003e – On leather, faux leather, fabric backings and plenty of interior surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eBonding technology \u0026amp; how it works\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLeather Glue Solvent Free\u003c\/strong\u003e is built on modern water-based polymer dispersions that set into a flexible, hard-wearing bond as they dry. Unlike solvent-based contact adhesives, the formula doesn't attack the leather, creates no stiff zones and stays elastic over the long haul. That matters for repairs in cars and furniture, where leather is forever moving and taking load. The glue layer stays thin, clear and stable — a solid base for repair materials like leather patches, binder, Fluid Leather or colour.\u003c\/p\u003e\n\u003ch3\u003ePrep, application \u0026amp; pro repair technique\u003c\/h3\u003e\n\u003cp\u003eClean the spot first and let it dry right through. You lay the \u003cstrong\u003esolvent-free adhesive\u003c\/strong\u003e down thin and precise, then either bond straight away or let it tack off for a moment, depending on the repair. For tears, back the area with a textile carrier before you level the surface with binder or Fluid Leather. Wipe off any excess straight away — the glue dries clear, but it's far easier to fix while it's still wet. Once it's fully cured you can colour-match the area and seal it off.\u003c\/p\u003e\n\u003ch3\u003eResults, where it works \u0026amp; how it differs from other adhesives\u003c\/h3\u003e\n\u003cp\u003eOnce cured you get a flexible, hard-wearing bond that holds even under movement. \u003cstrong\u003eLeather Glue Solvent Free\u003c\/strong\u003e is ideal for car leather seats, furniture, bags, shoe leather, interior trim and accessories. It isn't meant as a contact adhesive for large laminations — it's for precise repairs, backing patches or fixing small pieces of leather in place. Unlike solvent-based glues, it works odour-free, goes easy on the material and is safe on just about every type of leather.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon questions about COLOURLOCK Leather Glue (Solvent Free)\u003c\/h2\u003e\n\u003ch4\u003eHow strong is the bond?\u003c\/h4\u003e\n\u003cp\u003eVery strong, yet still flexible. Ideal for tears and edges that move.\u003c\/p\u003e\n\u003ch4\u003eCan I use the glue on every type of leather?\u003c\/h4\u003e\n\u003cp\u003eYes — on smooth leather, faux leather and textile backings. For suede, work very precisely.\u003c\/p\u003e\n\u003ch4\u003eHow long does it take to dry?\u003c\/h4\u003e\n\u003cp\u003eAbout 30–120 minutes depending on the coat thickness; full cure-through takes longer.\u003c\/p\u003e\n\u003ch4\u003eCan I use binder or colour afterwards?\u003c\/h4\u003e\n\u003cp\u003eYes, as soon as the glued area is fully dry.\u003c\/p\u003e\n\u003ch4\u003eIs the glue easy on your health?\u003c\/h4\u003e\n\u003cp\u003eYes — thanks to the solvent-free, low-odour formula.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003csmall\u003eLast updated: 04.12.2025 — Author: Daniel (Detailing1)\u003c\/small\u003e\u003c\/p\u003e","brand":"Koch-Chemie × COLOURLOCK","offers":[{"title":"20 ml","offer_id":56562226954575,"sku":"D1-KCX-686-20ML-01","price":13.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/686-20ML-01_1.png?v=1778250900"},{"product_id":"koch-chemie-colourlock-rep-glue-spezialkleber-leder","title":"COLOURLOCK \"Rep Glue\" special adhesive for fixing small damage","description":"\u003ch2\u003eCOLOURLOCK Rep Glue — special adhesive for precise leather repairs\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003eWhat is COLOURLOCK Rep Glue for? — This special adhesive bonds leather and faux leather permanently, flexibly and right on the spot, and it's ideal for tears, lifted edges and repairs with a textile or leather backing.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eCOLOURLOCK Rep Glue\u003c\/strong\u003e is a highly effective, flexible-curing special adhesive for leather and faux-leather repairs. It's perfect for tears, split areas, lifted edges, backing patches and fixing small pieces of leather in place. The glue bonds the materials hard yet stays elastic, so it backs up repairs on parts that keep moving — bolsters, steering wheels, armrests, furniture edges, bags or shoes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong, flexible hold\u003c\/strong\u003e – Ideal for tears, edges and backing patches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise to work with\u003c\/strong\u003e – Controlled application for spot-on repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad material compatibility\u003c\/strong\u003e – Works on leather, faux leather and textile backers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eBonding technology \u0026amp; how it works\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRep Glue\u003c\/strong\u003e is built on an elastic, high-grab adhesive formula that stabilises the repair without making the material go stiff. The glue soaks well into the leather fibres and, once dry, forms a flexible bond that moves with the panel and stays load-bearing for the long haul. That keeps the spot from cracking open again, so repairs hold up to everyday use. It really shows its strength on structural damage or on repairs you plan to recolour later, where you want a solid base to build on.\u003c\/p\u003e\n\u003ch3\u003eHow to use it \u0026amp; best practices\u003c\/h3\u003e\n\u003cp\u003eClean the area you're repairing and let it dry fully. Then lay down \u003cstrong\u003eRep Glue\u003c\/strong\u003e thin and precise. On tears, back the spot with textile or leather before you smooth the surface with filler or binder. Let the glue dry all the way before any colour or top coat goes on. Wipe off any excess while it's still wet — it comes off easily. Because it stays flexible after curing, you can carry on working it professionally without hard transitions.\u003c\/p\u003e\n\u003ch3\u003eResults \u0026amp; where to use it\u003c\/h3\u003e\n\u003cp\u003eOnce it's dry you get a solid, lasting and still-elastic bond. \u003cstrong\u003eRep Glue\u003c\/strong\u003e is ideal for automotive leather, furniture, bags, shoes, accessories and interior parts. It's not a large-area laminating glue — it's made for precise repair points where you need firm hold and flexibility in equal measure. Perfect for prepping repairs that you'll then fill, colour and seal with a top coat.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon questions about COLOURLOCK Rep Glue\u003c\/h2\u003e\n\u003ch4\u003eHow strong is Rep Glue?\u003c\/h4\u003e\n\u003cp\u003eVery strong – the bond stays flexible and handles areas that take a lot of stress.\u003c\/p\u003e\n\u003ch4\u003eIs the glue suitable for faux leather?\u003c\/h4\u003e\n\u003cp\u003eYes, Rep Glue grips securely on leather and common types of faux leather.\u003c\/p\u003e\n\u003ch4\u003eCan I use filler or colour afterwards?\u003c\/h4\u003e\n\u003cp\u003eYes, as soon as the glue is fully dry.\u003c\/p\u003e\n\u003ch4\u003eHow do I apply Rep Glue correctly?\u003c\/h4\u003e\n\u003cp\u003eThin, precise and only on clean, dry surfaces; on tears, with a backing patch.\u003c\/p\u003e\n\u003ch4\u003eDoes Rep Glue make the leather stiff?\u003c\/h4\u003e\n\u003cp\u003eNo, it stays elastic and moves with the material.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003csmall\u003eLast updated: 09.12.2025 — Author: Daniel (Detailing1)\u003c\/small\u003e\u003c\/p\u003e","brand":"Koch-Chemie × COLOURLOCK","offers":[{"title":"20 ml","offer_id":56584331460943,"sku":"D1-KCX-620-20ML-01","price":21.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/620-20ML-01_1.png?v=1778250912"},{"product_id":"koch-chemie-colourlock-leather-glue-repair-set","title":"COLOURLOCK \"Leather Glue Repair Set\"","description":"\u003ch2 id=\"speakable-headline\"\u003eStructurally secure cracks in car leather with leather glue, backing fabric, and brush\u003c\/h2\u003e\n\n\u003cblockquote id=\"speakable-summary\"\u003e\n  \u003cp\u003e\u003cem\u003eWhat is the COLOURLOCK Leather Glue Repair Set? A three-part smart repair system consisting of water-based leather glue, tear-resistant backing fabric, and two mini brushes. It permanently and odor-neutrally repairs cracks, cuts, and dry breaks in smooth leather, synthetic leather, aniline leather, and suede. Not suitable for hard plastics, bare metal, glass, or exterior paints.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp id=\"speakable-definition\"\u003e\u003cstrong\u003eCOLOURLOCK \"Leather Glue Repair Set\"\u003c\/strong\u003e is the complete smart repair system from Koch-Chemie × COLOURLOCK for the \u003cstrong\u003ecar leather glue\u003c\/strong\u003e repair workflow. The box contains three components: a water-based leather glue in a 20-gram container, a pre-cut tear-resistant textile backing fabric, and two fine mini brushes for precise application. The glue uses a water-based polymer dispersion instead of volatile solvents. This makes it odor-neutral, non-flammable, and preserves the natural re-greasing agents in the leather collagen.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePermanently elastic adhesive seam instead of brittle, hard bonding.\u003c\/strong\u003e As it dries, polymer chains mechanically interlock with the open leather fibers and the backing fabric. In short: the bond remains rubber-elastic like the leather itself. This means for you: when getting into the seat bolster, the glued area stretches with it and does not tear again on the first day of stress, as happens with superglue repairs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOdor-neutral and without pungent fumes in the interior.\u003c\/strong\u003e Classic saddler contact adhesives use volatile organic compounds, i.e., light solvents, which leave a pungent smell in the car for days. The water-based dispersion evaporates its water content and that's it. This means for you: the car is usable again after two hours, and no persistent glue smell permeates the seat upholstery and headliner.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete set for an average seat bolster repair.\u003c\/strong\u003e Tear-resistant backing fabric and two mini brushes are included directly in the set — no separate accessory purchase from saddler specialists is necessary. The 20-gram tube is sufficient for three to six smart repair jobs on seat bolsters, backrest edges, or leather steering wheels, depending on the length of the crack. If you are restoring an entire seat, plan for a second set for very long crack chains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003ePractical tip from Detailing1:\u003c\/strong\u003e We see the same pattern in every second call regarding leather repair. The customer sees the crack, squeezes a thick drop of glue into it, presses it down with their hand — four weeks later, the crack is open again or a dark shadow appears on the visible side.\u003c\/p\u003e\n  \u003cp\u003eFrom our experience: the two crucial factors are degreasing and thin application. First, the adhesive edge must be stripped bare with COLOURLOCK Degreaser — otherwise, the water-based glue will bead off invisible skin fats and leather care residues. Second, the glue is sparingly applied with the mini brush between the leather fiber and backing fabric, never dropped directly into the crack from above.\u003c\/p\u003e\n  \u003cp\u003eFor thin aniline and nappa leather, additionally: rather two thin layers with a short flash-off time each than one thick one that bleeds through and leaves a shadow on the surface. This is the discipline that separates the set from a DIY attempt.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eCar Leather Glue in Four-Phase Smart Repair\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003ecar leather glue\u003c\/strong\u003e is not a tool for rushed actions, but the structural core of a timed four-phase workflow. If you skip a phase, you will see the result after the first week of driving.\u003c\/p\u003e\n\n\u003cp\u003ePhase one is preparation. The crack and surrounding adhesive edges are thoroughly cleaned with Leather Cleaner Mild or Strong, then degreased with COLOURLOCK Degreaser. The Degreaser is a special cleaning benzine, a volatile solvent that removes deep-seated waxes, silicones, and body fats without dissolving the leather color. Practical: without this step, the water-based glue will not find a mechanical anchor in the leather and will bead off.\u003c\/p\u003e\n\n\u003cp\u003ePhase two is inserting the backing fabric for tension cracks. Cut the supplied textile fabric two to three centimeters larger than the crack, mark the center with a pen, fix it from above with a needle, and slide it centrally under the leather with a narrow spatula. The marking serves as a check: if it is centered in the crack, the fabric lies neatly under both crack edges.\u003c\/p\u003e\n\n\u003cp\u003ePhases three and four are glue application and curing. The glue is sparingly brushed with the mini brush between the backing fabric and the back of the leather, allowed to flash off for two to five minutes, then the crack edges are pressed onto the backing fabric for 15 to 30 minutes with even pressure — clothes pegs, a sandbag, or a small steel block can help. Initial load-bearing capacity after about two hours, full final strength after 48 hours. Only then can filling with Liquid Leather or further leather care steps be carried out. Processing temperature between 15 and 25 degrees — frost destroys the emulsion, heat above 30 degrees causes the glue to set too early.\u003c\/p\u003e\n\n\u003ch3\u003eSmooth and synthetic leather yes, aluminum door panels no\u003c\/h3\u003e\n\n\u003cp\u003eThe leather glue is highly specialized. Four substrates are approved — and four areas are hard limits that even the best workflow cannot overcome.\u003c\/p\u003e\n\n\u003cp\u003eApproved are \u003cstrong\u003esmooth leather\u003c\/strong\u003e such as BMW Dakota, Mercedes Nappa, or Audi Valcona — the closed pigment layer holds the glue on the surface, which makes butt-joint processing controllable. Also approved are \u003cstrong\u003esynthetic leather and vinyl\u003c\/strong\u003e such as MB-Tex, Sensatec, or Skai, where the glue binds the torn PVC fabric to the backing material underneath. For \u003cstrong\u003eaniline leather\u003c\/strong\u003e — open-pored, undyed full leather without a lacquer layer — maximum economy is required, because the glue immediately penetrates the pores and darkens the area. For \u003cstrong\u003esuede\u003c\/strong\u003e such as Alcantara, Nubuck, or Velour, the glue is applied exclusively to the back between the fiber and the backing fabric — if it gets on the raised pile, the area clumps into a hard crust that cannot be brushed out.\u003c\/p\u003e\n\n\u003cp\u003eWhat doesn't work: hard plastics like ABS door panels, bare metal, glass, and exterior paints. The water-based dispersion finds no anchor on closed, inflexible surfaces. If an entire leather cover detaches extensively from the door panel, saddlers tend to use heat-activated contact adhesives — that's a different league and a different tool. And: with petrified leather that has been dehydrated and structurally destroyed by years of UV radiation, even this glue cannot work wonders. If the fiber breaks in your hand, a new saddler cover is the next sensible step.\u003c\/p\u003e\n\n\u003cp\u003eCompared to water-based competitor glues such as Geist. Leather Glue, the chemical basis is almost identical. The system advantage with COLOURLOCK lies in workflow integration: leather glue, Liquid Leather filler, Leather Fresh dye, and leather sealant are coordinated as a closed chain — no mix-and-match risk between brands. If you want to complement the appropriate \u003ca href=\"\/collections\/innenraum\"\u003einterior\u003c\/a\u003e workflow all around, you will find the coordinated cleaners and care products for the entire seating package in the range.\u003c\/p\u003e\n\n\u003ch3\u003eClassic car restorers, detailers, ambitious DIY repairers\u003c\/h3\u003e\n\n\u003cp\u003eThe set serves three clear target groups. If you don't fit into any of these three categories, you are better off with a complete service from a saddler or leather specialist.\u003c\/p\u003e\n\n\u003cp\u003eFirst target group: \u003cstrong\u003eclassic car and youngtimer restorers.\u003c\/strong\u003e Anyone who owns a Porsche 911 Targa, a BMW E30, or a Mercedes W107 SL with the original leather interior does not want to go to a saddler for a new cover — the original patina is irrevocably lost and the car loses visible character. Smart repair with the COLOURLOCK set is the only sensible choice here. In the relevant detailing forums, the product is the undisputed gold standard with a grade of 1.5.\u003c\/p\u003e\n\n\u003cp\u003eSecond target group: \u003cstrong\u003eused car dealers and semi-professional detailers.\u003c\/strong\u003e Torn entry bolsters on BMW M-Sport seats or Mercedes AMG seats are the typical customer fright before a test drive appointment. With the set, the damage can be repaired optically and structurally in two to three hours of work plus curing — the vehicle value increases many times over the set investment. Mini brushes and backing fabric are included directly, no additional accessory purchase is necessary.\u003c\/p\u003e\n\n\u003cp\u003eThird target group: \u003cstrong\u003eambitious convertible and leather enthusiasts with a craftsmanship claim.\u003c\/strong\u003e Those who invest the effort, disciplinedly carry out the preparation, and respect the 48 hours of final strength will end up with a repair that lasts two to three seasons. However, heavily stressed entry bolsters on the driver's seat remain inherent weak points — due to daily sliding in and turning, even a professionally glued seam may require touch-ups after twelve to 24 months. This is not a weakness of the set, but physics of shear stress. Those who prefer to tackle the damage preventively will find the suitable \u003ca href=\"\/products\/koch-chemie-leather-star-ls-lederpflege\"\u003eLeather Star leather care\u003c\/a\u003e in the range for regular re-greasing as crack prevention.\u003c\/p\u003e\n\n\u003cp\u003eThe one professional trick that is not in any manufacturer's brochure: for extremely stressed seat bolsters, we combine the gluing with the thermo-fixing method. Insert the backing fabric as usual, brush on a thin layer of glue, let it flash off — and when pressing, use a slightly warmed metal block preheated to oven-low instead of just your bare hand. The thermal shock freezes the polymer in its final form and prevents slipping under tensile load. Especially with E30 sports seats or Audi RS bolsters under constant load, this is the gesture that lasts for years instead of tearing open again after one season. This is the difference between a quick repair and a smart repair result at a saddler's level.\u003c\/p\u003e","brand":"Koch-Chemie × COLOURLOCK","offers":[{"title":"set","offer_id":57637092458831,"sku":"D1-KCX-8807-S-01","price":25.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/8807-S-01_1.png?v=1778249510"},{"product_id":"koch-chemie-colourlock-glue-tex-hinterklebestoff-lederreparatur","title":"COLOURLOCK \"Glue-Tex\" Iron-On Fabric for Leather Repairs","description":"","brand":"Koch-Chemie × COLOURLOCK","offers":[{"title":"1 piece \/ approx. 15 × 25 cm \/ Black","offer_id":58714933592399,"sku":"D1-KCX-9998404","price":17.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/koch-chemie-colourlock-glue-tex-hinterklebestoff-lederreparatur.png?v=1788874976"}],"url":"https:\/\/detailing1depot.com\/collections\/koch-chemie-colourlock-ratgeber-leder-kleben.oembed","provider":"Detailing1","version":"1.0","type":"link"}