Has Anyone Had Their Roof Treated By Therma-Roof Ltd.?

[rccatnap]

If so, were the results as expected?
Were there any problems?
TIA

[Dogsbody2]

Please can we be clear who you are dealing with here.

Thermaroof is an insulation sheet product manufactured by Kingspan for flat roof insulation. Kingspan are a big company but do not to my knowledge get involved in providing solutions or services.

Thermo Roof, on the other hand, appears to be a company specialising in 're-fitting opaque and insulating roofs to conservatories in place of translucent plastic.

Who exactly are you talking to and what solution are they offering you.

[Dogsbody2]

If this is Therma Roof Coatings Ltd, do not touch with barge pole. Bad idea to spray insulation from inside onto roof tiles for too many reasons to mention.

[rccatnap]

Thank you DB2.
The company you mention is in Yorkshire, not the same company at all.
Anyway mine is not a flat roof. Any foam spraying is not onto the roofing tiles but between the rafters onto the roofing felt. Do you have first hand knowledge of this, or is it anecdotal?

[Dodger666]

Is it not more practical to insulate the loft floor rather than spray foam underneath the tiles and felt? You will still be wasting heat/money keeping your loft space warm with sprayed foam. If you already have loft insulation installed you could add more if you're looking for better insulation. I would think it would be cheaper too.

[Baldric]

DB2 mentions two companies, which one are you asking about?

[rccatnap]

Yes I cannot disagree with you Dodger666, but I need to use the loft space for storing items I want protected from extreme cold. At least no one has yet said don't do it because..........etc. etc. Thank you for your input.

[Dogsbody2]

Reasons why this is not a good idea, apart from the above, include
Locking the tiles or slates in place making it impossible to change one
Covering the rafters in foam which locks moisture inside and causing them to rot

What 'problem' are you trying to solve? Loose tiles, heat loss or helping keep dodgy builders in beer money?

[rccatnap]

Sorry Baldric, I was talking about 'Therma Roof Ltd. in Staines-upon-Thames.
DB2 was referring to Thermaroof Kingspan flat insulation board and Thermo-roof, another company altogether. Understandably a bit confusing.
Thank you for asking.

[Baldric]

OK, I'm out of here.

[rccatnap]

DB2 it would be true if closed foam insulation was used, but this company uses open foam, which is lighter and allows air circulation and does not need extra ventilation. The tiles are not locked in place and are still available to be lifted and replaced if required as the foam doesn't touch them. Thanks again for your comments.

[Dogsbody2]

Well you seem to have researched it, but I wouldn't do it. I would install rigid foam between the rafters, held in by nails. Unless someone could demonstrate a long track record - ten years plus - of success in doing this. The building industry is littered with companies selling good ideas that don't work out as expected.

[Canary42]

B&Q sell insulating blocks which push-fit between rafters. The installation instructions advise leaving a gap between the insulation and the tiles or felt. I can't find the product on their website but have seen it in their stores.

[rccatnap]

I know what you mean DB2, you're quite correct, which is one of the reasons I'm asking here.
I'll look into your suggestion at B & Q Canary42, thanks.