just a thought I have hung many fire doors and have had to router the intermiscent strip into the edge of the door on some, however when the door gets hinged the strip gets cut through, top, middle and bottom as does the closing edge when the lock goes in are we supposed to put something behind the hinges to make up for the bits we have cut out?
intermiscent strips
- Thread starter chirpychippy
- Start date
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Are you looking for intumescent pads?
Lots of people stock them; spell as shown if you're doing a web search.
Lots of people stock them; spell as shown if you're doing a web search.
howdens' door frames have a routered channel for the strips so the same thing happens when cutting out the ironmongery.
i have never been pulled or asked to deal with missing pieces of intumescent strips.
i have never been pulled or asked to deal with missing pieces of intumescent strips.
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AFAIK, there is no requirement for pads to hinges or locks for the door to comply with its fire resistance rating.
It seems that pads are merely promoted by the their manufactureers, but are not a requirement.
If you think about it, a pad sandwiched between the hinge and frame or door does nothing - same for one on the mortice lock. Where can it expand to?
The idea of intumescent strips is to prevent fire and smoke getting through, but also to prevent heat around the door edge leading to failure of the fixings and then the door. The very small areas at the hinge and latch will not affect performance of the door fixings nor allow significant smoke or heat through
It seems that pads are merely promoted by the their manufactureers, but are not a requirement.
If you think about it, a pad sandwiched between the hinge and frame or door does nothing - same for one on the mortice lock. Where can it expand to?
The idea of intumescent strips is to prevent fire and smoke getting through, but also to prevent heat around the door edge leading to failure of the fixings and then the door. The very small areas at the hinge and latch will not affect performance of the door fixings nor allow significant smoke or heat through
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