Dow Dowsil Firestop 400 Fire Rate Acrylic Sealant

Dow Dowsil Firestop 400 Fire Rate Acrylic Sealant is an intumescent acrylic sealant for internal applications, developed to maintain the integrity of firewalls or partitions.

BENEFITS:

- Fire resistance tested according to BS476-22 and classified up to EI240 depending on joint configuration
- Two hour fire rating can be achieved
- Resists mildew and mould growth
- 30-45 minutes tack free time
- Class 2 surface spread of flame classification
- Mean toxicity index 2.0
- Remains flexible
- Easy to use, one-component sealant
- Resistant to ozone, ultra-violet radiation and temperature extremes

RECOMMENDED FOR:

- Good unprimed adhesion to most common construction substrates
- For internal perimeter pointing around door and window frames, where the integrity of fire walls need to be maintained
- In the small joints formed where fire rated partition sections meet