Intumescent strips should be used in fire door applications. Available in two types: intumescent only and intumescent with smoke seal, in both brown and white. The 10mm and 15mm intumescent strips are 30 minute rated, the 20mm versions are 60 minute rated.
All intumescent strips have Certifire approval CF543, passed at BS476 part 22 and 31.1, and have NHBC approval. All timber fire doors must be fire stopped with intumescent strip. The key benefits of passive fire protection are: