Dowsil™ Firestop 400 is an intumescent acrylic sealant for internal applications. Developed to maintain the integrity of fire walls or partitions, it does not emit halogenated by-products under fire conditions. Resists mildew and mould growth.
Tested to BS 476 Part 22: 1987 and BS 476 Part 7: 1987. A 2 hour fire rating can be achieved.
We offer a range of delivery services which will be based on the item, the weight and delivery location. With most products you will be given an option of whether you want it 2-3 day untracked, or next working day. You will be given these options in your basket once you’ve supplied your delivery address as part of our checkout process.
Please note that if you are having a delivery to an address outside of Zone A & B the delivery services offered may take longer. Zone C up to 48 hours, and Zone D & E up to 72 hours.
For more information on our delivery charges and zones, please click here.
In the unlikely event that you need to return your item, please can you read through our returns & refund policy here and follow the instructions for the one that relates to your reason for return.
Please note that returns for items purchased on our website will not be processed by any of our branches.