Roof Insulation Spray on foam ? Opinions

guineapig · 20 January 2007 at 2:19PM

Hi,

I am paranoid about roof tiles blowing off our roof:o and when ever it is windy I just lay awake all night just waiting for the roof to blow off!

I am sure this is not a cheap thing to have done, so I am wondering if there is anyone who has had this done or knows someone who has it, I like the idea of the added insulation, but my primary worry is about the tiles blowing off, so any ideas that don't involve foam-spraying the inside of the roof would also be gratefully received.

TIA

Tom_Jones · 20 January 2007 at 5:06PM

Possibly the worst thing you could ever do to to your roof IMHO. A roof has to be vented and by adding spray foam in between the rafters will cut down on the ventilation of the roof. Your house insurance will cover any damage done by high winds etc and it will take a consistent gale to get most roofs to move, so don't worry about it.

plumb1_2 · 20 January 2007 at 5:13PM

Yes, dont have this done, if you have a leak it will trap any water and rott your timbers.
STAY AWAY FROM THIS IDEA

Poppycat · 20 January 2007 at 5:20PM

Trouble with insurance is that you have to pay the first X amount like £50 and in my neighbours case it is £100. I just had to pay £50 to get a few slates fixed.

If I had the job done by insurance it would of cost £150 so bloke said, and that isnt unusually I had a claim a few years back for slates and that was £130 for insurance and it was less damage that I had this week and they weren't cowboys either

Bare in mind if you claim you could loose no claims, they ask if you change policy, like have you had any claims the last 3 years etc?

guineapig · 20 January 2007 at 6:41PM

Thank you very much for the input I do appreciate it.

The spray stuff is supposed to be breathable and non-toxicso I just expected that the wood (if dry when applied) would be fine ( I do take your point, if this did not turn out to be the case though;) )

Also windproof up to 200 miles an hour!

However, I have been ripped off so many times by tradesmen ( and I am very careful to get reccomendations etc) but for some reason even though I live in a small not very posh house I must appear to these guys as some kind of human ATM:mad:

I am very much for a fair price for a fair job, I do believe that people should be paid for their time and skills, but when you have had a lot of bad experiences it kind makes you think everyones out to rip you off KWIM?

Not to mention that when the gales come people are going to have to wait to get their repairs done because the roof repair guys are going to be busy ( good bad or indifferent)& everyone can't get their roof fixed at the same time.

I am a prevention rather than cure kinda gal, so this is why I was wanting to get this done.

Any further help/ideas or info is still appreciated
Thanks

Loobysaver · 20 January 2007 at 6:43PM

I have been paranoid about my roof tiles coming off! My house is 1930's and still has the original roof ie tiles and cement - no felt/batons.

I presume that I will need to get the whole roof stripped and retiled as some of the tiles have lifted and it is very damp and draughty in the loft!!:eek:

Volcano · 21 January 2007 at 3:27AM

Roofs don't regularly blow away unless they are in poor condition. This foam won't stick to the tiles (just to the felt and rafters) so won't necessarily offer any kind of reinforcement or reassurance. Like other 'spray-on cures' touted through your letterbox, they sell you something by playing on your fears!

If you really feel the need to spend your money, then spend it on maintaining your roof, they are built to a decent standard and only a tornado will shift a roof in good repair.

Poppycat · 21 January 2007 at 11:52AM

if your roof is anything like mine slate and some parts over 100 years of age, I doubt the foam will attach to all the slates, some of my slates are corroding with age inside, bits of slate flaking off, so I doubt the foam will stick to every slate.

robby-01 · 21 January 2007 at 12:07PM

do not do this it is s..t and a waste of money

Poppycat · 27 March 2007 at 12:29AM

Bump some one raised the question again

FilthyLuka · 27 March 2007 at 2:08AM

this stuff was featured on BBC's Watchdog a few weeks ago

they said some people report it does damage to the tiles braking many as the foam expands

Roof Insulation Spray on foam ? Opinions

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