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shop@flatroofingsystems.co.ukGacoPatch Silicone Roof Patch & Repair Sealant – 7.6 Litres
Manufacturer/Brand: Gaco
SKU:GP1573-2
In stock
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Repair roof cracks, seams and awkward details with GacoPatch Silicone Roof Patch, a thick, flashing-grade silicone repair compound that provides flexible waterproof protection. Available in Black, Grey and White, it is supplied in a 7.6 litre pail.
GacoPatch has a thick, caulk-like consistency, making it suitable for localised repairs around roof penetrations, gutter seams, rain collars and membrane defects. In most cases, it can be applied in a single application without separate reinforcement, primer or topcoat, helping to reduce preparation time and material costs.
Containing no asphalt or acrylic, GacoPatch remains permanently flexible, including under ponding water. Its UV-stable formulation offers excellent colour retention and resistance to chalking and cracking.
Key Features
- Flashing-grade silicone repair compound – ideal for roof details and localised patching.
- Single-application repair in most cases – usually requires no separate primer, reinforcement or topcoat.
- Permanently flexible – maintains flexibility even under ponding water.
- UV-stable protection – resists chalking and cracking caused by sunlight exposure.
- Excellent colour retention – available in Black, Grey and White.
- Broad substrate compatibility – bonds to many common roofing surfaces, subject to their condition and preparation.
- Asphalt-free and acrylic-free formulation.
Suitable Applications
- GacoPatch can be used for a range of roof repair and detailing tasks, including:
- Surface cracks, control joints and coping joints.
- Gutter seams and membrane pinholes.
- Roof penetrations and rain collars.
- Fish-mouths, where a membrane edge or lap has lifted.
- Filling pitch pans around roof penetrations.
Typical uses.
Surface cracks, control joints, coping joints, gutter seams, membrane pinholes, rain collars and fish-mouths, and as a pitch pan filler. Sacrificial tape is recommended on cracks wider than 6.4 mm and on any crack that moves. Fabric can be added at changes of angle.
It bonds to most aged asphalt membranes, aged single-ply membranes, concrete, metal, spray polyurethane foam and many existing roof coatings.
Use White GacoPatch only when applying over asphaltic surfaces.
- Pail Size, Colours and Coverage
- Product - GacoPatch Silicone Roof Patch.
- Type - Flashing-grade silicone repair compound.
- Pail size - 7.6 litres.
- Colours - Black, Grey or White.
- Approximate coverage - 38 linear metres per pail.
Coverage is approximate and depends on the width and depth of the repair, surface condition and application losses.
Preparation and Application
Check that the existing surface is suitable and prepare it in accordance with the current manufacturer’s instructions.
Sacrificial tape is recommended over cracks wider than 6.4mm and over any crack subject to movement. Fabric reinforcement can also be added at changes of angle where required by the application detail.
Although most repairs require no separate primer, reinforcement or topcoat, requirements can vary. Always refer to the current technical data sheet for substrate compatibility, application thickness, weather conditions and curing requirements.
Order GacoPatch Silicone Roof Patch from All Flat Roofing Supplies, with UK-wide delivery.
Additional Information for GacoPatch Silicone Roof Patch & Repair Sealant – 7.6 Litres
Delivery Information
Delivery Information
Gaco roof coatings are delivered directly to your chosen address through our network of courier and pallet delivery services. Delivery typically takes 1–3 working days, although remote locations and busy periods may require slightly longer. Delivery times are estimates and cannot be guaranteed.
Please advise us before dispatch of any access restrictions, road closures or other circumstances that could prevent or delay delivery. Delivery vehicles may range from small vans to rigid and large articulated HGVs. We cannot control which vehicle is allocated to your order.
We strongly recommend that you do not schedule roofing works until your order has been received in full and checked.
Checking Your Delivery
Please inspect your order on arrival. Any visible damage should be recorded on the delivery paperwork, and any damaged items must be reported to our office within 48 hours of delivery. Photographs of the packaging and affected products will help us resolve the matter promptly.
Tins may occasionally become dented or distorted during transport. Cosmetic dents do not normally affect the contents or their suitability for use, provided the tin remains sealed and intact, we would not normally refund or exchange. If a tin is split, leaking, open or has a damaged seal, please report it as a damaged item.
Returns Information
Returns are accepted within 14 days of delivery. Please contact our office before returning any products so we can confirm the correct procedure and return address. The return address may differ from our operational depot.
Products must be unused, unopened and in their original condition. For change-of-mind returns, you are responsible for the return delivery costs and for ensuring the goods are securely packaged.
Returned goods remain your responsibility until they have been received and inspected by our customer service team. We recommend using a tracked delivery service with suitable cover for the value of the goods. We cannot refund items that are missing from the return or arrive damaged.
These conditions do not affect your statutory rights, including those relating to faulty, damaged or incorrectly supplied goods.
FAQ's
What is GacoPatch Silicone Roof Patch used for?
GacoPatch is designed for localised roof repairs, including surface cracks, gutter seams, membrane pinholes, roof penetrations, rain collars and lifted membrane laps known as fish-mouths. It can also be used as a pitch pan filler.
Does GacoPatch need a primer, reinforcement or topcoat?
In most cases, GacoPatch can be applied in a single application without a separate primer, reinforcement or topcoat. However, sacrificial tape is recommended for cracks wider than 6.4mm and any cracks subject to movement. Fabric reinforcement can be added at changes of angle. Always follow the manufacturer’s application instructions.
Can GacoPatch withstand standing water?
Yes. GacoPatch remains permanently flexible under ponding water and is UV-stable, making it suitable for exposed roof repairs. Resistance to standing water does not mean it can be applied to wet surfaces; check the technical data sheet for application conditions.
Which roof surfaces can GacoPatch bond to?
GacoPatch bonds to most aged asphalt membranes, aged single-ply membranes, concrete, metal, spray polyurethane foam and many existing coatings. Suitability depends on the surface condition and preparation.
Only White GacoPatch should be used over asphaltic surfaces.
What sizes and colours are available?
GacoPatch is supplied in 7.6 litre pails, in Black, Grey and White. One pail treats approximately 38 linear metres, depending on the width and depth of the repair and the surface condition.