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How to mix ACTFLEX 989 CWP. Lump free is half the job.
·1 min read·FORSPEC Technical Team
The short version
- Mix ACTFLEX 989 CWP with a drill, never by hand.
- Once it is smooth, let it stand for 3 to 4 minutes, then mix for 1 more minute.
- Pot life is about 2 hours.
A two-part cementitious membrane is a chemical mix, not a paint. The powder needs time to wet out fully. Roll it on too soon and you get pinholes and a thin film.
The steps
- Weigh it: 1 part of Part A liquid to 1.2 parts of Part B powder, by weight.
- Mix by machine until smooth and lump free.
- Let it stand for 3 to 4 minutes.
- Mix again for 1 minute, then start rolling.
- Pot life
- About 2 hours at 25°C
- Recoat
- 4 to 6 hours
- Tile
- From 6 to 8 hours after the final coat
Where this comes from
Systems, products and drawings
SystemInternal Wet Area WaterproofingThe full build-up, layer by layer→ProductACTFLEX 989 CWPTwo-part flexible cementitious acrylic membrane for internal and external wet areas, recoatable in just 4–6 hours.→Page989 calculatorKits by area→RangeAll FORSPEC productsBy system, with data sheets and calculators→
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