SPRAY FOAM ON SLATE ROOF DIY KIT
Uploader Comments (Sprayfoam69)
Top Comments
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That Spray Foam is expensive....If the US President Osama wants to help people to go Green, he should be giving the stuff away to Do-it-yourselfers....Like Solar, if it was not so expensive, lot more People would have Solar Powered Homes....
All Comments (33)
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your crazy to pay any one to do this
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Typical bloody cowboy way of doing things.
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@penopolyuretan most any...so long as the surface is clean and dry...you can spray it to just about anything, I would avoid painted surfaces though
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@jbmnd93 so my idea in your expert opinion would have been the better option than directly spraying to the slate like i thought.I have hung fiberglass insulation for many years and have also had worked on roofs myself.And I thought this was a bad idea myself directly spraying to the slates.the baffle idea would have created an area or airspace between the slate and the insulation with some natural heat circulation between them.plenty of people live in attic spaces also, im not one though.
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@tappakeggaday1 Just insulate the floor of the attic. Don't live in your attic.
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They just destroyed a slate roof. The slates can no longer ventilate, moisture will be trapped for extended periods, a couple freeze/thaw cycles and the slates will delaminate rapidly. That's why you see slate and tile roofs that get painted delaminate and fail prematurely.
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As a slate roofer for over 22 years, this application, in my expert opinion this is the worst thing you can do to your slate roof. You have now attached all of your slates together and to the battens. Now when you do have to repair a slate they are all stuck together. This will destroy your slate roof. The added cost to repair or replace your roof in the near future will be a lot more than what you will save in heating costs. If your slates are slipping call a slate roofer not an insulator.
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On what materials it can be applied, I mean adhesion.
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How much does a diy system like this cost? I'm planning to gut an old house and spray the exterior walls
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hmm would stapling cardboard flats between the slate roof for a bit of air space and then foam help the slate breath?i was thinking of the insulation and the breathing problem also.i know they dont do this to a shingle roof because it would bake the shingles off of the roof
DIY = shortcut = bad idea
ArtisanTony 1 year ago
@ArtisanTony , please ensure full prep is carried out and there is no reason why this will not prolong the life of your roof by 20 years. If you can afford 200 sq mtrs of french slate and a re roof , go for it i agree. But if you are on a budget then this is a ideal option. And as you can see we only applied a flashcoat. This meant eves were free for cross ventilation and all lathes were left to breath. Cheers
Sprayfoam69 1 year ago
Did you do a thorough external overhaul of the roof to cure any leaks/ugly slates? Also, an important aspect to any roof is breathability. I would assume that the foam would trap moisture (i.e fungus+insects). Lastly, the part of the building that takes the brunt of the weather are the eaves and verges. If you cannot reach these parts with foam then those areas would become a hazard as the nails continue to weaken. Not impressed.
robdbuck 1 year ago
@robdbuck sorry for the delay rob buck, full prep is essential , this will not water proof your roof if you have leaks then you need to fix the leaks first. I am sure you will agree leaks are cracked or missing slates or damaged lead work, this all needs addressing. Also you will see that we do not encapsulate the lathes and we also leave the eves free for cross flow ventilation, the most important thing in a roof is ventilation.
Sprayfoam69 1 year ago
Hi i am a slate roofer(girlfriends computer)
This system has no place on a slate roof.
Any leaks which occur are likely to go unnoticed and cause timber damage.Just because a slate cant slip doesn't mean the roof wont leak.
The worst part is the fact that when you decide to re roof it you will have to throw every slate away because they wont come off whole and you wont get that crap off the back anyway.
200sqm roof is approx 4000 slates. new welsh at around 2.50 = 10k just to buy the slates.
melanie7512 2 years ago 7
@melanie7512 thanks for comment , i am a roofer too , and 10K was too much and as you can see all the lathes are left and eves left for ventilation, and yes this will not stop any leaks , you have to fix the leaks first then apply the foam to ensure not slate loss or splitting occurs. Its all in the prep.
Sprayfoam69 1 year ago