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Kingfisher FIBRESEAL is a professional-grade, solvent-based waterproofing compound that creates an instant, durable seal on leaking roofs and guttering systems. This advanced, grey-coloured formula incorporates tough, fibrous strands in a thixotropic formulation that works in all weather conditions, making it easily applied even in wet conditions, and perfect for emergency repairs when you need them most. For EPDM, felt, concrete, metal & timber.Read More
Due to ADR regs on transport of flammables we can only send 25L drums of solvent product via premium rate special carrier, hence minimum FREE carriage order is 4 x 25L or ring for a quote. Alternatively, you can still collect single 25L drums at our Ulverston or Glasgow trade counters.
phone01229 869100
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✓ Instant waterproofing - stops leaks immediately upon application✓ All-weather application - works on wet surfaces and won't wash away✓ Single coat coverage - no primer required, apply straight from the container✓ Professional durability - flexible membrane withstands temperature changes✓ Emergency ready - essential for urgent maintenance and repair situations
Coverage: 1-2m² per litre (whole roof applications), 0.5m² per litre (two coat system)Application Temperature: +5°C to +30°CInitial Cure: 24 hours at 20°CComplete Cure: Up to 72 hours (temperature dependent)Colour: GreyType: One component solvent-based acrylic with thixotropic formulation and reinforcing fibresService Temperature: -20°C to +70°CTensile Strength: 13.2kg/m²Elongation: 65% at break
Our liquid roof repair compound combines decades of waterproofing expertise with modern polymer technology to deliver exceptional results. Unlike basic roof paints or temporary sealants, this professional coating creates a flexible, breathable membrane that moves with your building while maintaining complete weather protection.
Professional contractors rely on our products for demanding commercial projects, while property owners appreciate the simple application and immediate results for home maintenance.
Kingfisher Bio-Wash: Essential pre-treatment for roofs with moss, lichen, or algae growth. Sanitises surfaces and prevents regrowth under the coating.
Scrim Reinforcing Mesh: Polyester or fibreglass fleece for bridging larger cracks and high-movement areas. Embed between two coats of FIBRESEAL for maximum durability.
Kingfisher K-X11 Primer: Required primer system for corrugated iron and metal roofs to ensure optimal adhesion and performance.
We stand behind the quality of our waterproofing products. When applied according to instructions on properly prepared surfaces, Kingfisher Liquid Roof Repair Compound provides reliable, long-lasting protection against the elements.
Two primary delivery options for smaller U.K MAINLAND orders (Typically under 100 Kg):
Standard 3-day service: £6.25 plus VAT (Note: Highlands Postcodes may be up to 5 working days)
Next Working Day*: £13.95 plus VAT (Not available to Highlands Postcodes)*Excludes weekends and public holidays
Cut-off time for “Next Working Day” orders to be processed is 12:00 noon. Once your goods have been despatched, you will normally receive a confirmatory e-mail with tracking details so that you can check the progress of your order. Details
Yes, this is one of FIBRESEAL\'s key advantages. It can be applied successfully to damp surfaces and even underwater in extreme emergencies. Unlike water based products, it won\'t wash off if rain occurs during application or curing, making it perfect for urgent repairs when waiting for dry weather isn\'t an option.
Coverage depends on your application method: Single thick coat: 1 litre covers 1-2m² (recommended for whole roof coating) Two thin coats: 1 litre covers 1m² total (0.5m² per coat for optimal uniformity) Emergency repairs: Higher coverage as you\'re targeting specific problem areas Measure your roof area and consider ordering 10-15% extra for overlaps and future touch-ups.
FIBRESEAL is designed for both professional contractors and competent DIY users. Application is straightforward, using either a brush or roller, and the thixotropic formulation ensures it won\'t drip or run. However, for large commercial roofs, complex details, or if you\'re uncomfortable working at height, we recommend professional installation. The key is proper surface preparation, which determines long-term performance.
Metal roofs: Require Kingfisher K-X11 primer system for optimal adhesion Fibreglass/GRP: Works well on pitched roof sheets, but flat GRP with hard resin topcoats may need surface preparation Not suitable for: Fresh bitumen or tar-based surfaces When in doubt, test a small inconspicuous area first or contact our technical team.
Immediate waterproofing: FIBRESEAL is waterproof as soon as applied Initial cure: 24 hours at 20°C (longer in cold weather) Full cure: Up to 72 hours, depending on temperature Walk-on safe: Only after full cure is achieved Lifespan: 5- 10+ years with proper application and surface preparation. The acrylic polymers are UV-resistant and won\'t become brittle with age, ensuring long-term flexibility and performance.
Only just managed to use some of the product because of the weather but up to now its worked a treat a1.⁸
Reviewed by Ian jones
I used Fibreseal, in black, on the concrete roof of a bomb shelter from WW2 that over the years, regardless of various 'miracle' solutions, has leaked like a sieve. It has been over 12 months since I sealed the roof and there has been no water ingress at all. It was not too easy to apply due to the thickness of the product but once in place it has finally solved the massive leak problem. I recommend Fibreseal unreservedly.
Reviewed by Bob Dando
Having used various Kingfisher products (masonry paint, asbestos sealer) with good results over 9 years for a shed near the sea at Dungeness - thought I should say something about the Fibreseal roof repair. I bought a tin in 2015 just in case. Fast forward 7 years to December 2022 - got a leak in my felt flat roof. It's 5 degrees c outside, wind chill is 1 degree. A bit damp too but things will get worse. I ask myself - will this stuff work? It's been on my shelf for 7 years. Label says - can be applied at 5 degrees c. Got on the roof, stirred it, painted it into cracks in the seams. Went on very smoothly. Come the rain - that problem is now fixed. I've just ordered more tins and the scrim tape just in case for next year when I might do the whole roof. I have confidence in these products based on what I've seen so far.
Reviewed by Zsolt Kerekes
Tried for many years to seal my leaking concrete garage roof with various bitumen based products. Always short lived and never 100% effective. Then discovered Kingfisher Fibreseal. Absolutely brilliant. Took time to apply properly but the results are amazing and been nearly a year now without a leak. Just about to apply a second coat just to be certain over the winter. Have applied to my son's roof with same excellent results. Fully recommended.
Reviewed by David Robinson
Kingfisher FIBRESEAL is a one component solvent based acrylic roof repair compound. The product has a thixotropic formulation which incorporates tough fibrous strands which reinforce the final coating. Kingfisher FIBRESEAL was developed to be an instant waterproof repair to any leakage and will not wash off, even when wet. The coating will cure in cold and wet conditions. (Under water in extreme cases). The acrylic polymers incorporated in the product are extremely ultra violet light resistant and will not embrittle with age.
Companion / Related Products:• Kingfisher “Bio-Wash”• Kingfisher “1 for All EXTREME” hybrid polymer sealant• Scrim reinforcing repair mesh
(Refer to these individual product data sheets for detailed application guidance – published on ourwebsite www.kingfisheruk.com)
Suitable for EXTERNAL maintenance and repair of a wide variety of domestic, commercial, industrial and agricultural buildings including:• Flat and Pitched Roofs,• Corrugated Asbestos,• Roof Lights,• Flashings, Roofing Felt• Gutters, Slate, Asphalt,• Lead, Glasshouses, Metal and Fibreglass.
• An instant remedy for leaking roofs and guttering.• Can be applied successfully in wet conditions.• Will adhere to most common roofing materials.• An ideal product for all roof repairs.• Can be used as a complete roof coating for flat roofs made of roofing felt, asbestos and sheet metal.
The surface must be sound and free of loose or friable materials. To obtain the best result remove all surface debris and surface water using a stiff broom and then power wash (except asbestos). Kingfisher FIBRESEAL roof coating can be successfully applied to a damp surface but as with most coatings it is best applied to a dry surface in dry weather conditions. Where the roof is subject to organic growth this should be removed and the surface thoroughly sanitised with “Kingfisher Bio Wash” to protect against re-growth of fungal spores and embedded roots. Any existing coating must be inspected and adhesion tests carried out to ensure that it is a stable surface for the application of Kingfisher FIBRESEAL.
Temporary repairs: -Kingfisher FIBRESEAL is easily applied using a brush or roller. Treat all details first working thoroughly into hidden crevices and joints. To bridge cracks or where excessive movement may occur, additional reinforcement can be incorporated into the coating by embedding suitable polyester or fibreglass woven fleece between two coats of Kingfisher FIBRESEAL, ensuring that all air bubbles are removed by “stippling in” with the brush. Kingfisher FIBRESEAL can be applied in one coat, but experience has shown that a two coat application ensures greater uniformity of coating thickness.
Whole Roof Membranes: -The surface must be swept clean of all debris and all surface water removed before being inspected, to ensure that the surface is sound and has no hidden defects. Any lichen, moss or fungal growth must be treated with “Kingfisher Bio Wash”. Holes, cracks, joints, or gaps should be bridged as previously described. Allow repairs to dry and then coat the whole surface with either two thin coats of Kingfisher FIBRESEAL at ½ litre/m² or one thick coat at 1 litre/m². Leave to dry.
Corrugated Iron or Metal Roofs: -All rust and loose debris should be removed by wire brushing. The whole roof should then be primed using Kingfisher K-X11 and a cement slurry coat (Neat K-X11 mixed with ordinary Portland cement in the ratio 1:1.5) Apply two coats of primer, allowing each coat to cure before applying 1 coat of Kingfisher FIBRESEAL at a rate of 1 litre per m².
Kingfisher FIBRESEAL is waterproof as soon as it is applied and will not wash off but full cure takes 2-3 days depending on temperature. Do not walk on membrane until full cure is obtained.
Kingfisher FIBRESEAL in its liquid form is hazardous to the aquatic environment so must be handled responsibly. Empty and dry residue containers can be disposed of at an ordinary refuse tip. All remaining material in the container must be fully cured, (e.g. by painting out onto waste cardboard or similar) before disposal.
Store in original packaging in a cool dry place away from ignition sources, out of direct sunlight and protect from frost. Keep out of reach of children.
The product has a shelf life of 9 months from the date of manufacture, subject to correct storage conditions.
“Fibreglass compatibility”. This product will bond tenaciously to most fibreglass roof sheets and roof “lights” installed in pitched roof scenarios. However, some fibreglass or “GRP” flat roofing systems include a hard resin “Top Coat” of a density and smoothness which inhibits the adhesion of remedial coatings. Such surfaces can be machined (with coarse grit paper) to improve “key” but adhesion integrity and lifespan can be unpredictable compared to more porous substrates. Application to such impervious surfaces is at user’s own risk.
• Wear disposable gloves and overalls during preparation and application.• Avoid contact with skin and eyes.• If contact occurs wash immediately with plenty of water.• Keep out of reach of children.• Ensure good ventilation during application and drying.
Before using this product read the Material Safety Data Sheet which can be obtained atwww.kingfisheruk.com or by calling the Kingfisher Technical Dept. Tel: 01229 869 100.
www.kingfisheruk.com
The information given in this product data sheet is given in good faith, based on current knowledge and experience. It relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is to the best of the company’s knowledge and belief, accurate as of the date indicated. All recommendations are made without warranty or guarantee, as to accuracy, reliability or completeness since the conditions of use are beyond our control. It is the user’s responsibility to satisfy themselves as to the suitability and application of such information for their own use.
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Kingfisher Lead Flashing Sealant Paint for rapid easy repair of lead flashing and roof joints and leaks. This lead mastic bonds lead to concrete/brick/stonework and possesses excellent elasticity on high movement joints. Moisture curing.
