ALLCOAT Leak Repair

High performance all weather coating with outstanding waterproofing properties

Leak Repair

Leak Repair

600cc – £15.00

Allcoat Leak Repair is an emergency repair, trowelable polyurethane membrane, suitable for many uses. Allcoat Leak Repair seals, repairs and bonds many different substrates even underwater!

Allcoat Leak Repair is a fast curing emergency repair sealant and general purpose adhesive that has been specifically formulated to cure in various weather conditions, even in the heaviest of downpours or totally submerged.

Allcoat Leak Repair contains both PU and silyated PU technology thus giving rise to a repair material with extreme versitilty in application and use.

The material has been modified in order to give enhanced thixotropic properties meaning Allcoat Leak Repair can be applied not only horizontally but vertically or overhead.

Allcoat Leak Repair cures rapidly to produce a sealant with excellent early grab adhesion even on substrates traditionally problematic for PU sealants, e.g. aluminum, asbestos, steel, polycarbonate, felt, asphalt, TPO, EPDM, GRP, glass, marble, slate, timber, etc.

Typical Uses

  • Repairing and sealing roofing membranes.
  • Repairing and sealing gutters and gutter joints.
  • Sealing or repair of joint laps in roofing sheets.
  • Use as a repair filler prior to covering with Allcoat waterproofing range of products.

Features & Benefits

  • Suitable for all substrate types
  • All weather application
  • Excellent adhesion – Even underwater!
  • Flexible
  • Crack bridging capabilities
  • Will seal through ponding water
  • Low temperature application
  • Instant waterproofing

Surface Preparation

Dirt build up, moss and loose material should be removed by scraping or brushing with a stiff bristled brush. Any cracks and gaps should be raked out to remove dirt build up. Large expanses of standing water should be removed by sweeping, small quantities of water may be allowed to remain without affecting the performance of the ALLCOAT Leak Repair. In cold conditions any ice present on the surface must be removed.Any oil or grease contamination should be removed by wiping with ALLCOAT Degreaser Solution.

Application Procedure

Clean surface thoroughly, and ensure that no oil, grease and wax contaminants or silicon remains are present.

For many applications, primer is not required. In the case of application on very porous substrates, prime area/surfaces to avoid the possibility of air bubbles being blown into the uncured sealant if the substrate temperature rises. The recommended primer for must substrates is LV Primer.

NOTE: In some wet conditions adhesion to some substrates can become difficult, in this situation it is recommenmded to abrade the surface to provide a mechanical key. Once the area has been abraded it must be cleaned to remove any dust

particles / debris produced. When applying Allcoat Leak Stop it is important to overlap the repair area by at least 50mm to provide the perfect seal.


600cc foil sausage, supplied with disposable gloves and spreader.

Shelf Life

12 months minimum in the original packaging when stored in dry places and at temperatures of 5-25ºC. Once opened, use as soon as possible.





Mid Grey

Touch dry

4 – 6 Hours

Dry to Foot traffic

24 Hours

Maximum Overcoating

Indefinite (Providing surface is clean & dry)


Drying & Curing Times at 20*C

Mixing Ratio

Supplied ready for use


Viscous coloured thixotropic liquid

ALLCOAT Leak Repair TDS   ALLCOAT Leak Repair TDS


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