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Liquid Roofing Kits & Flat Roof Overlay Systems

CRS KIT FINDER

Find your liquid roofing kit

Just 3 quick answers: roof surface, what you need to do, and roof size. We will show the matching kit or the right next step.

Polyurethane RoofingShop category
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Shop TekPur 2K liquid roofing kits for commercial flat roof waterproofing, heavier-duty overlays and specification-led liquid membrane projects where a two-component polyurethane…

Hybrid Flexi GRPShop category
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Shop Evergreen Hybrid liquid roofing kits for flexible flat roof overlay projects on suitable existing roofs. Built for refurbishment work where a…

Showing 1–16 of 67 resultsSorted by price: low to high

About Overlay Systems & buying advice

Shop liquid roofing kits, flat roof overlay systems and liquid waterproofing membranes for leaking roofs, refurbishments and commercial flat roofing projects. Compare Evergreen Hybrid, TekGuard, TekCryl and TekPur systems for the right repair or overlay route.

Buying guide

Choose Overlay Systems for Flat Roofs for overlaying or refurbishing a suitable existing flat roof without stripping everything back to a new deck.

Good choice when

  • Use this category for overlaying or refurbishing a suitable existing flat roof without stripping everything back to a new deck.
  • Use it when the surface is sound existing roof surfaces prepared for liquid roofing.
  • Use it when the measurements, preparation work and related accessories have been checked.

Consider another route when

  • Do not use this category when the existing roof is rotten, saturated, unstable or unsuitable for coating without remedial work.
  • Do not use it when the roof is unsafe or unsuitable without preparation.
  • Do not use it as a shortcut if another CRS system is a better fit.

Next step: Choose the system by roof surface, fire requirement, expected movement and detail complexity.

Five Systems, One Category — Choosing the Right Liquid Roofing Route

This category covers five distinct products that each serve a different scenario. Understanding which scenario you are in before ordering saves the cost of returning the wrong product.

TekCryl is a fibre-reinforced acrylic repair coating — brush or roller applied direct from the tin to felt, GRP, metal or bitumen. No mixing. No catalyst. It is a fast repair tool for leaks on structurally sound roofs, not a full refurbishment system.

Evergreen Hybrid Flexi-GRP is the standard overlay and refurbishment system. It bonds to an existing sound roof without strip-off, replacing separate GRP resin and topcoat with a single lower-styrene product that cures to a flexible finish. The system for domestic and trade refurbishment where fire-rated classification is not required.

TekGuard Flexi-GRP is the fire-rated version of the same Evergreen system. BROOF(t4) certified to BS 476 Part 3. Use TekGuard where building control or the project specification requires fire-rated overlay performance. Use Evergreen where it does not.

TekPur SP is a single-component cold-applied polyurethane membrane. Ready to use with no mixing. Suitable for overlays, detail waterproofing and refurbishment on felt, GRP, bitumen, EPDM, metal and concrete. A same-day primer is available where a fast-track application programme is needed.

TekPur 2K is the two-component version of TekPur. A liquid activator is mixed with the base before application. Solvent-free, low odour. The commercial specification route for car parks, ramps, bridges and demanding substrates where the two-component system is specified by name.

When None of These Is the Right Answer

All five systems require a structurally sound substrate. Rotten deck, soaked insulation, widespread membrane failure or a moving structure cannot be solved with any liquid product. In those cases, the correct route is a new OSB3 deck and a GRP roofing kit — not an overlay.

Frequently asked questions

What is a liquid roofing kit?

A liquid roofing kit is a liquid-applied waterproofing system used for flat roof repairs, overlays, refurbishments and waterproofing details. It is applied to a prepared surface to form a protective roof membrane or repair coating.

What is the difference between liquid roof repair and an overlay system?

Liquid roof repair is usually for fast localised leak fixes, while an overlay system is used across a larger suitable roof area to refurbish and extend the roof life.

Which system should I use for an instant leak fix?

TekCryl is normally the quickest route for fibre-reinforced liquid roof repair where a practical leak fix is needed fast.

Which liquid roofing system is best for commercial use?

TekPur 2K is positioned for heavier-duty and commercial liquid roofing projects, while TekPur Single Pack can suit flexible waterproofing and detail work.

Can I overlay an existing flat roof?

In many cases a sound existing roof can be overlaid, but the surface must be suitable, clean, prepared and structurally stable. Rotten decks, trapped moisture or badly failed roofs may need more than an overlay.

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