WATCO Flexible Flat Roof Coating – fibre-reinforced acrylic roof membrane
€180.32
Product information "WATCO Flexible Flat Roof Coating – fibre-reinforced acrylic roof membrane"
WATCO Flexible Flat Roof Coating (sold in the UK as Liquid Roof Membrane) is a liquid-applied roof membrane for sealing leaking or aged flat and pitched roofs on halls, workshops and outbuildings without re-roofing. It is applied cold by roller and forms a seamless waterproof skin – especially where sheet materials tend to leak around pipes, upstands and roof penetrations.
It is a single-pack, fibre-reinforced, water-based acrylic membrane. The fibres give the layer extra strength, and its high elasticity lets the roof move without the coating cracking. According to the manufacturer it is highly UV and weather resistant, lets vapour escape from the substrate and can be applied to slightly damp surfaces. Suitable for concrete, asphalt and roofing felt; two coats are recommended.
Typical applications
- Flat and pitched roofs of halls and outbuildings
- Upstands, pipe penetrations and roof protrusions
- Refurbishing existing concrete, asphalt or felt roofs
Features
- Seamless waterproof membrane
- Fibre-reinforced and highly elastic
- UV and weather resistant (manufacturer data)
- Can be applied to slightly damp surfaces
- Cold applied, single-pack
Technical data (manufacturer)
| Base | 1-pack water-based fibre-acrylic membrane |
|---|---|
| Substrates | Concrete, asphalt, roofing felt |
| Finish | Fine, slight sheen; grey |
| Pack sizes | 5 l, 15 l |
| Coverage | approx. 5–7 m² per 5 l or 14–21 m² per 15 l per coat |
| Recommended coats | 2 |
| Wet film thickness | 1,000 µm per coat |
| Drying | approx. 8 hours at 20 °C |
| Min. surface temperature | 10 °C |
| Use | Outdoors |
| Shelf life | 12 months unopened, keep frost-free |
For large, slightly uneven flat roofs with ponding, WATCO Pourable Roof Protection Compound is an alternative.
Versions
| Colour | Container | Manufacturer part no. |
|---|---|---|
| Grey | 5 l | LRM5 |
| Grey | 15 l | LRM12 |
Hazard information under CLP (according to the manufacturer's safety data sheet)

Signal word: Warning
Hazard statements: H317 May cause an allergic skin reaction. H412 Harmful to aquatic life with long lasting effects.
Precautionary statements: P280 Wear protective gloves. P501 Dispose of contents and container in accordance with all local, regional, national and international regulations.
Supplemental information: EUH211 Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.
Wording of the H, P and EUH statements as per CLP Regulation (EC) No 1272/2008, Annexes III and IV; pictograms derived from the classification. The manufacturer's label and current safety data sheet are authoritative.
Note: The components may be classified as hazardous. We will send you the current safety data sheets with classification, labelling and H and P phrases on request before you order. Supplied to trade and industrial users only.
Downloads
Technical Details
| Operating Conditions: | For outdoor areas, Moisture resistant, UV-resistant, Weather-resistant, Wet conditions and rain |
|---|---|
| Sectors/Industry: | Building & Facility Management, Construction & Renovation, Logistics & Warehousing, Maintenance & Technical Services, Municipalities & Public Institutions, Roofing, Scaffolding & Work at Height |
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