What is the difference between intumescent strips and smoke seals?
What is the difference between a cold smoke seal and an intumescent strip? An intumescent strip expands when exposed to extreme heat, helping seal off gaps in between doors and door frames, to prevent the spread of fire. Smoke seals block smoke, and do not provide any protection against fire.
How do I retrofit my intumescent strips?
How To Fit An Intumescent Strip
- Clean frame with damp cloth, removing dirt and grease.
- Measure the height of the fire door, noting the position of the lock – and cut the smoke seal strip to fit accordingly.
- Before using any adhesive, open and close the door with the seal in place.
What is intumescent fire seal?
Intumescent fire seals expand in the event of a fire and seal off the gap between the door and the frame, preventing the spread of fire and smoke. This combined fire and smoke seal prevents the spread of smoke prior to the fire seal activating. Features low friction brush pile to aid door closing.
Do FD30 doors need intumescent strips?
The minimum rating of a fire door is now predominantly FD30, with intumescent seals being necessary to achieve this rating. This change came about in recognition that very tight edge gaps were necessary to achieve a FD20 fire rating when doors were subjected to fire resistance testing without intumescent strips.
Is an intumescent seal a smoke seal?
So, What’s the Difference? A smoke seal is placed in the same places as an intumescent strip, but it is always visible. While the intumescent strip blocks off the fire itself, the smoke seal is designed to only block smoke-protecting you from smoke inhalation.
Do I need intumescent strips?
In the event of a fire, without the intumescent strips, the door would not prevent the spread of fire for half as long, thus putting the residents or occupants of that building at much higher risk of injury and/or death. Fire doors play a crucial role in preventing the spread of fire and smoke.
Can you cut intumescent strips?
The Maxitek intumescent strip router cutters are available in widths of 10mm and 15mm. If a 20mm groove is required, simply make a cut using the 15mm cutter and then set the depth 5mm lower to complete the 20mm width of cut.
Do I need intumescent strips on fire doors?
It is generally accepted that to provide the required level of fire resistance, all fire doors should be reinforced with either intumescent strips, cold smoke seals or a combination of both. According to the British Standard 476 fire safety standards, most doors need to be S-type (smoke sealed) doors.
How do intumescent seals work?
So, how do Intumescent seals work? An intumescent seal is a strip of material fitted around a doorway, that when exposed to heat, expands closing any gaps around the door to stop the fire spreading for a period of time. These seals usually come with either 30 or 60 minute ratings.
Do all fire doors need intumescent strips?
What is the difference between FD20 and FD30 fire doors?
It was decided from the Scheme’s inception that its door manufacturing members would no longer test and sell an FD20 fire door except with intumescent seals fitted. Typically this determines that an FD30 product is in fact used for both levels of performance.
Do fire doors need intumescent strips on the bottom?
How do I apply envirograf® intumescent paper?
Intumescent paper is supplied for application around a rebated lock, to cool the lock in a fire. Remove lock from door, cut Envirograf® intumescent paper to size, wrap it around lock and sandwich it between the lock and door as you replace the lock. Also place
A surface-mounted intumescent fire or fire and smoke seal available in a range of colours and wood veneer finishes. Supplied as a pack with intumescent paper for use around lock and hinge areas.
What are envirograf® passive fire products?
ENVIROGRAF® passive fire products protect structural openings where services pass through building elements such as fire-rated ceilings, floors, and walls, to maintain their integrity. These intumescent systems of passive fire products are installed and remain passive until they are required to do their fire protection job.
Why choose envirograf®?
ENVIROGRAF® works closely with you to determine the correct passive fire product for your requirements. Our international network of technical contacts is your first port of call for passive fire products and fire protection requirements.