W4 Mastic What Colour is this?
- Naomi Harris
- Jun 1, 2020
- 1 min read

The colour of the mastic is grey. W4 Mastic sealing strip comes in 5m role, it's been formulated for beeding and sealing overlapping joints, awning rails, windows and vents surround on external trims for caravans, motorhomes and campervans. This product is not designed for construction around the home.
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