
Zinsser
Firecoat 4L Grey Exterior Fire-Retardant Undercoat is a UV-resistant, waterproof coating that adds fire-retardant protection to exterior and interior surfaces.
Suited to render, timber, aluminium, steel, concrete, plasterboard and brick. Coverage depends on the substrate, at 300g/m2 to achieve 1mm DFT and 1.6mm WFT.
Firecoat 4l Grey Exterior Fire Retardant Undercoat is a fire-resistant coating rated to Bushfire Attack Level 40 (BAL-40), suitable for various substrates.
FIRECOAT Exterior is designed to provide high-level fire protection against bushfires, structural fires, and urban fires. It can be applied in its native grey or overcoated with any water-based exterior colour. When exposed to flame or radiant heat, it expands to form a char layer that protects the underlying surface from ignition. This lightly textured coating is easy to apply with a brush, roller, or sprayer, making it suitable for both homeowners and professionals. It is ideal for residential homes, infrastructure assets, and commercial properties.
| Dimensions (W x H x D) | 176mm x 192mm x 176mm |
| Weight | 5.5kg |
| Model Number | FCT0004 |
| Volume/Size | 4L |
Firecoat 4l Grey Exterior Fire Retardant Undercoat enhances fire resistance for various applications.
Yes - it is UV resistant and waterproof, rated for both outdoor and indoor use.
Render, timber, aluminium, steel, concrete, plasterboard and brick.
With cold clean water.
Would buy again for sure
Was a bit skeptical ordering online but really glad I did. The item arrived in a sturdy box — nothing rattled or was damaged. Set it up in about 10 minutes and has been working perfectly since. Compared to what I saw in store I saved a solid amount. Will definitely be back.
Good product for the price
Fast delivery to regional WA. Solid product and works exactly as described.
Exceeded my expectations
Bought this as a birthday present and the person loved it. Arrived the day before I needed it which was perfect timing. Great service from SuperSaver AU — really happy.
Solid quality — very happy
Great little Firecoat 4L — setup was easy and it works perfectly.
Really pleased with this
Honestly one of the easiest online purchases I have made. Ordered in the evening and had a tracking number by morning. Delivered to Canberra in 3 business days. Product is well made and does exactly what we needed. My partner is happy with it too. Highly recommend.
Highly recommend
Really impressed with the Firecoat 4L — it looks and feels more premium than the price suggests. Delivery was quick and packaging kept everything safe. No issues at all.




