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1,007 Roofing questions

sprayed foam roof insulation

Hi,
have you got som experience with sprayed foam roof insulation, is it good or not? Does anyone do it, how much it cost per square meter, in what depth is it installed ???

thanks for any advise
Joe

I am planning to re-roof my garage using 2mm torch-on felt. The garage roof is about 19 feet long and only has a shallow gradient. Do I need to fit an underlay?

does a new roof require building permission or approval

Roof Verges: Repoint or plastic

I have a modern 4 bed detached house with two gable ends and two other verges over windows. I recently lost a chunk of mortar/cement out of a small section and am trying to decide whether to have it all checked and re-pointed or go for plastic dry verges. Any thoughts on price for each and if repointing what is the best mix for the job?

Lead valleys cracked and allowing water to leak in roof, what are my options to fix ?

roof tiles are old and I want to avoid having to remove tiles or change roof.
thank you

Sandy mortar!

My builder has repointed repointed some of the barn roof tiles on the lower addition of my house. I am concerned that the mortar mix that he has used is very weak, as it has cracked and breaks easily. You can also crumble it away with your fingers as it appears to be very sandy. The builder has stated that he used a 1:4 mix as any stronger would crack the tiles. He's been back around but says it is fine, but i'm still concerned. Any advice please.

We had a velux window installed 3 years ago and its had constant leaks. Is it best to replace the window or is it possible to ever fix a leak?

Thanks for your replies - very helpful! We've had the builder back 2 times but he's failed to fix the leak and he's very difficult to get hold of.
It tends to leak during really heavy rain and the builder said that leaves in the gutter can cause a leak during heavy rain. Is this true? Gutter overflowing?(We do have a lot of tall trees, leaves and pine needles here).

Coating existing roof tiles?

We have recently purchased an 1930s semi and the original clay roof is on its way out (discovered in survey). We had one roofer (tried to get more) look at it before we purchased and he agreed with the survey that it is need of complete replacement.

However my wife had a knock on the door from a company (i can give name if wished) claiming to be able to restore the existing tiles by re coating them. They claim they will replace tiles if needed but will try to just clean and coat the old clay tiles. Is this really a good idea? Sounds to me like they will simply cause more damage as they coat try and coat and clean them and leave us worse off. Is this common practice? What are your thoughts?

Been quoted for ridge tile replacement. Not convinced it's needed - advice please

Many thanks to everyone who's responded to this question. I'd never used this site before and really wasn't expecting much of it. I'm now using it to find someone to do the pointing work. Thanks again.
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A roofer has called at my house and offered a quote for replacing all ridge tiles. As no obligation I took a quote for ridge tiles plus repointing one chimney & reducing height of a second redundant chimney - £1,700. Seems a lot. Also, not convinced ridge tiles need to be, or ought to be, replaced. Can see gaps at bottom of some of them but all seem sound and no sign of any loose. Chimneys definately need repointing but don't want to fork out that amount for something that may not be necessary. Do you think they may be offering unnecessary work? (For what it's worth, they're a very new company - filed new incorporation documents September 2009 - and are currently doing a lot of roof work on a number of nearby properties)

I have recently noticed that the roofing felt under my tiles is considerably frayed and in some parts missing where it overhangs into the gutters.

Is this a problem? I heard that such felt could contain asbestos fibres. Is this true?

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