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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)

Base1-pack water-based fibre-acrylic membrane
SubstratesConcrete, asphalt, roofing felt
FinishFine, slight sheen; grey
Pack sizes5 l, 15 l
Coverageapprox. 5–7 m² per 5 l or 14–21 m² per 15 l per coat
Recommended coats2
Wet film thickness1,000 µm per coat
Dryingapprox. 8 hours at 20 °C
Min. surface temperature10 °C
UseOutdoors
Shelf life12 months unopened, keep frost-free

For large, slightly uneven flat roofs with ponding, WATCO Pourable Roof Protection Compound is an alternative.

Versions

ColourContainerManufacturer part no.
Grey5 lLRM5
Grey15 lLRM12

Hazard information under CLP (according to the manufacturer's safety data sheet)

GHS07 Exclamation mark

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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Frequently Asked Questions

Unless stated otherwise on the product, delivery takes 14 working days within Germany and 21 working days to all other delivery countries. For custom-made products we agree the delivery date with you individually.

Many products are available on request in special sizes or colours or with custom printing. Get in touch – we will check the options for your requirements.

We deliver to Germany as well as Denmark, Norway, Sweden and Finland. Deliveries to Austria and Switzerland are available on request.

We supply products from renowned manufacturers. Technical data sheets and safety data sheets are available directly on the product pages; certificates and declarations of conformity are available per product on request.

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