What “intumescent” means
An intumescent material swells when heated, forming an insulating char or foam that closes gaps, protects other materials and limits the passage of flame, smoke and heat. Expansion ratio, expansion pressure and the form of the product decide where it can be used.
Seals for gaps and perimeters
Graphite intumescent strips and rods are flexible and cut to length; they are the usual choice for door and window perimeters, cable penetrations and curtain-wall joints. Phosphorus-based sheets protect hardware such as lock cases and hinges and seal edges of larger components.
Cavity and profile filling
Round and flat intumescent inserts fill the cavities and grooves of uPVC, aluminium, steel and polyurethane profiles in fire-rated window and door systems. Insulating intumescent boards (100 / 104 series) can be cut or punched into custom shapes for the same purpose.
Boards for openings and cable routes
CS195+ composite board and coated fire protection board are rigid boards used for cable trays, trenches, pipes and partitions. The ventilation mesh wraps cable bundles and lets heat disperse in normal use.
Ventilated openings and glass edges
Intumescent ventilation grilles keep an opening ventilated until a fire closes it. Ceramic-fibre tape and glazing pads cushion and insulate fire-rated glass at the frame.
Which product for which job
| Job | Typical product | Form |
|---|---|---|
| Door / window perimeter gap | Graphite strips, flat inserts | Strip |
| Round groove | Heat-absorbing rods | Rod |
| Profile cavity | Round / flat inserts, 100 / 104 boards | Insert / board |
| Hardware and lock-case protection | Phosphorus boards (IN5 / IN15) | Flexible sheet |
| Fire-glass edge | Ceramic-fibre strips, glazing pads | Tape / block |
| Cable tray or trench | CS195+, coated board, mesh | Board / fabric |
| Ventilated opening | Intumescent ventilation grilles | Casing grille |
Related
Prepared by the JoyHaus product team from supplied product literature. Technical requirements should be checked against current model-specific documents and local project requirements.