| The Breakroom > The Water Cooler |
| Safety of Polyuerathane Insulation? |
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| nrml:
I would have thought the manufacturers would have to meet some standard as far as fire safety is concerned before their product is approved for sale. Unless my local environment made my house more vulnerable than average to lightning strikes, I wouldn't bother taking any special precautions. |
| PekkaNF:
I would install lighting protection that regulation requires and sleep my night well. Just wisited the house of one excentric gold smith build in 1950's. He was afraid of the fire and thugs, The house exterior was build from firebricks, roof was copper and all lighting and fire proections that mouney could by that time. Nasement had a safe with 20 cm thick steel door, bomb shelter/safe room and secret tunnelt to extra exit into garden. Pekka |
| Eugene:
Kingspan, the company, through their technical department can advise on any application of their materials from every aspect including that of fire regulations. Their website also carries solid information on the subject. http://www.kingspaninsulation.co.uk/Knowledge-Base/Facades---Fire-Safety.aspx If you have any doubts gives them a call. Kingspan products are for the main part constructional, they aren't used as interior wall cladding or for ceilings where there is a decorative requirement. Thus you tend to find them inside cavity walls, in floors and under exterior cladding. The real killer in a fire isn't correctly specified polyurethane inside walls and floors, but polystyrene in the form of tiles and coving; it burns very fiercely emitting dense toxic fumes. I suspect that maybe what got the unfortunates in the French Bistro A lot of this polystyrene stuff was applied in the 70s without much thought; not sure what the fire regs say about it now. No connection to Kingspan other than as a satisfied end user. Eug |
| Manxmodder:
--- Quote from: PekkaNF on August 08, 2016, 01:12:52 AM ---I would install lighting protection that regulation requires and sleep my night well. Just wisited the house of one excentric gold smith build in 1950's. He was afraid of the fire and thugs, The house exterior was build from firebricks, roof was copper and all lighting and fire proections that mouney could by that time. Nasement had a safe with 20 cm thick steel door, bomb shelter/safe room and secret tunnelt to extra exit into garden. Pekka --- End quote --- Agree,Pekka. The other reason I was thinking so much about lightning protection is where I live we are fairly high on the hill,and lightning storms tend to move directly through this area,heading towards the North. We are experiencing a lot more of these storms over the last few years and the intensity and strike count have also increased quite noticeably over that period. I am considering putting a conductor strip down through one of the redundant stone built chimney stacks and connecting to an earthing rod buried in the ground in the area under the house. That way it isn't even unsightly or visible from the exterior.....Anyone see any problems with that scheme?.....OZ |
| Pete W.:
--- Quote from: Manxmodder on August 08, 2016, 09:10:18 AM --- SNIP! I am considering putting a conductor strip down through one of the redundant stone built chimney stacks and connecting to an earthing rod buried in the ground in the area under the house. That way it isn't even unsightly or visible from the exterior.....Anyone see any problems with that scheme?.....OZ --- End quote --- Somewhere in my 'filing system' :lol: :lol: :lol: I have some literature on lightning protection. I think the company's name is Furze. One of the snippets I remember is that the copper strip must be of adequate cross sectional area - that's fairly obvious. What's not so obvious to the layman is that the inductance of the lightning conductor must also be minimised. A lightning strike is, after all, a high amplitude but brief pulse of current. Apparently just tailoring the strip out over a cornice and back again can contribute enough inductance to seriously reduce the effectiveness of the conductor - it doesn't need to be complete turns. |
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