Damp Safe
Let the weather change.
Keep caring for home.
Waterproofing coating for terraces, sunshades, parapet walls and as a base coat for exterior emulsions.
Plan your project
A LITTLE INSPIRATION FOR YOUR SPACE
Illustrative setting · not a product application photograph- Flexible waterproof coating
- Crack bridging
The care you don’t see.
The difference you live with.
A painted wall begins with the surface beneath it. Choose the right protection, prepare it properly, then bring your colour story to life.
Start with the cause
Resolve active leaks and repair unsound surfaces before coating.
Protect the surface
Use the product-specific dilution, coverage and coating system in the TDS.
Complete the finish
Follow the specified putty, primer and paint sequence for your surface.
Your next step,
made simple.
Choose a pack and ask us about Damp Safe for your project.
Know the details.
Get the finish right.
Practical guidance for your painter and your project.
Technical data sheetProduct application & specificationsDownloadProduct specifications & pack sizes
| Product family | Waterproofing |
|---|---|
| Pack sizes | 1L, 4L, 10L, 20L |
| Horizontal coverage | Primer: 5.0–5.4 m²/L per coat; waterproof coats: 3.2–3.5 m²/L per coat |
| Vertical coverage | Primer: 8.0–8.2 m²/L per coat; waterproof coat: 7.0–7.5 m²/L per coat |
| Dilution | Self-priming coat: 300 ml water per litre; waterproofing coats: undiluted |
| Surface drying | 30 minutes |
| Recoating | 4–6 hours at 30°C and 65% RH |
| VOC | < 50 g/L |
Source: Damp Safe_TDS Astral .pdf
Preparation & application
- Ensure complete plaster curing, positive roof drainage and a clean, dry surface. Remove existing bitumen and fungal/algal growth; repair cracks and unsound areas as directed in the TDS.
- Horizontal surfaces: apply one self-priming coat, followed by two undiluted waterproof coats perpendicular to each other. Allow 4–6 hours between coats.
- New vertical surfaces: apply the self-priming coat and one undiluted waterproof coat, then two compatible exterior emulsion coats. For repainting, follow the separate existing-surface system in the TDS.
Coverage & important notes
Coverage varies with application method, surface roughness, porosity and site conditions. Figures retain the coat/system basis stated in the supplied TDS.
Read the full technical data sheet for substrate-specific preparation, compatible coating systems, precautions and safety information. Warranty claims are subject to separate warranty terms.
Before you choose.
What is Damp Safe used for?
Waterproofing coating for terraces, sunshades, parapet walls and as a base coat for exterior emulsions.
Which pack sizes are available for Damp Safe?
Damp Safe is listed in 1L, 4L, 10L, 20L packs in the supplied technical data sheet.
What coverage does Damp Safe provide?
Horizontal coverage: Primer: 5.0–5.4 m²/L per coat; waterproof coats: 3.2–3.5 m²/L per coat. Vertical coverage: Primer: 8.0–8.2 m²/L per coat; waterproof coat: 7.0–7.5 m²/L per coat. Coverage varies with application method, surface roughness, porosity and site conditions. Figures retain the coat/system basis stated in the supplied TDS.
When can Damp Safe be recoated?
4–6 hours at 30°C and 65% RH. Follow the substrate-specific application sequence in the technical data sheet.
