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| Safety of Polyuerathane Insulation? |
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| Manxmodder:
I have been meaning to ask a few questions about the safety of foil backed polyurethane insulation boards for a while now...so here's a couple to start. I have a large stock of Kingspan polyurethane insulation boards in varying thickness's (25mm, 50mm,75mm) which I plan on using to insulate various parts of my 105 year old stone built house with. My concern with polyurethane insulation is it is easily set alight and burns ferociously with acrid and toxic fumes when burning. I have already insulated between the roof rafters with 75mm insulation,leaving a 25mm air gap above for breathable ventilation. A thought occurs to me that if the property roof was hit by a direct lightning strike,how likely is the risk of the insulation being set alight? Should I consider,for safety purpose, installing a lightning conductor strip and earth rod?........OZ. |
| wgw:
Well- at the risk of getting shot down- I would not worry, the insulation will be modern stuff and is self-extinguishing to some extent. It takes quite a lot to get it started when I want to burn it. I'm using kingspan and plain foam and never had any worries. If you get a lightning strike the insulation will be the least of your worries. |
| Fergus OMore:
I thought that this was all a bit of a sad joke. 13 French party goers in Rouen died when a birthday cake's candles set fire to the ceilings and walls. One can only hope that the remark was aimed at another type of construction material. Regards Norman |
| chipenter:
I have had to fill the gaps in a roof with intumecent polyurethane foam to protect the timber but not the kingspan . |
| John Stevenson:
--- Quote from: Fergus OMore on August 07, 2016, 08:44:18 AM --- I thought that this was all a bit of a sad joke. 13 French party goers in Rouen died when a birthday cake's candles set fire to the ceilings and walls. Regards Norman --- End quote --- What do you expect when they have 146 candles on a birthday cake :loco: |
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