Wakol PU 280 Polyurethane Moisture Barrier (DPM)
Wakol PU 280 Polyurethane Moisture Barrier is a professional-grade, one-component primer and moisture barrier designed to seal and strengthen absorbent and non-absorbent subfloors. It prevents residual moisture from cementitious substrates and acts as a reliable damp-proof membrane (DPM) before applying levelling compounds or wood flooring adhesives. The product penetrates deeply, hardens the surface and ensures excellent adhesion for subsequent layers.
Key Features
- 1-component polyurethane resin – ready to use, no mixing required
- Acts as a damp-proof membrane (DPM) on cement-based subfloors
- Blocks residual moisture up to up to 5 CM% (approx. 90% RH)
- Strengthens weak or dusty substrates
- Excellent adhesion for primers, levelling compounds and adhesives
- Solvent and water-free formulation
- Fast curing – ready for further treatment after approx. 45–60 minutes
Recommended Uses
- As a moisture barrier on cement and concrete subfloors
- As a primer for absorbent and non-absorbent surfaces
- For use under Wakol MS, PU and hybrid adhesives
- Suitable for underfloor heating systems
Application Instructions
- Ensure the substrate is sound, dry, clean and free from contamination.
- Apply evenly using a roller or brush.
- For moisture barrier applications, apply two coats crosswise.
- Allow each coat to dry for approx. 45–60 minutes at 20°C before overcoating.
- Clean tools immediately after use with Wakol RT 5960 Cleaning Agent or PU thinner.
Technical Data
| Brand | Wakol |
| Product | PU 280 Polyurethane Moisture Barrier |
| Type | 1-component polyurethane primer/DPM |
| Colour | Transparent amber |
| Drying time | Approx. 45–60 minutes per coat |
| Coverage | Approx. 150–300 g/m² per coat |
| Moisture tolerance | Up to 5 CM% (90% RH) |
| Use | Subfloor priming and moisture sealing |
| Container size | 11kg |
| SKU | UFSWAKOLPU280 |
FAQs
Can Wakol PU 280 be used as a full DPM?
Yes, when applied in two coats, it serves as an effective moisture barrier for subfloors with residual moisture up to 5 CM% (90% RH).
Is it suitable for underfloor heating?
Yes, it is fully compatible with heated screeds.
Do I need to mix it before use?
No – it is a ready-to-use one-component product. Stir briefly before application.
What adhesives can be applied over PU 280?
It is compatible with Wakol MS, PU, and hybrid adhesives such as Wakol MS 260 or MS 262.
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