Any opinions on Epdm roofs?

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Hi all

just looking for a bit of advice. I have a flat section of roof above my front door (approx 10 Sq m) it's currently a built up felt roof (I think know that's the right term) at the moment it's in quite a bad state of disrepair with the water not draining away and a section with a sag where it appears to have rotted the wood u underneath.
I had a roofer out the other week who quoted me for fitting a section of wood above what I already have to achieve a slope towards the drain and then refelting the wood. I didn't have the greatest impression from this guy and it sounded like a bit of a patch up job to me (although I admit I don't know much about roofing)
I had another guy out today and he's quoted me for ripping out what I have at the moment and rebuilding the wooden frame then covering it with firestone Epdm rubber. I had a look at this rubber and was surprised by how thin it is, I was looking for a bit of advice from anybody who knows a bit more about roofing on whether this rubber roofing is any good? Is it any better/worse than felt?

Any advice at all about this is much appreciated
 
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The rubber glues onto a ply, or similar, surface so thickness isin't as big a concern as it may seem. Any frame has to be covered in the appropriate thickness wood sheet material.
Search the forum there are many EPDM v's felt posts.
I fitted small scale EPDM covering some years ago (as a test in 2009) and it basically looks the same as it was all those years ago.
Think it was 1.6mm material.
There are some pics in my album.
 
The rubber glues onto a ply, or similar, surface so thickness isin't as big a concern as it may seem. Any frame has to be covered in the appropriate thickness wood sheet material.
Search the forum there are many EPDM v's felt posts.
I fitted small scale EPDM covering some years ago (as a test in 2009) and it basically looks the same as it was all those years ago.
Think it was 1.6mm material.
There are some pics in my album.

Thanks, il have another search through the forums just now. U mention that the frame has to be covered in an appropriate thickness of wood sheet. The way the guy told me about the job he was going to put ply wood right on top of whatever frame was below the current felt and just glue the Epdm on top, does this sound right?
Also this may already have been covered in other posts, but does this rubber stand up to the weather over time i. e does it go brittle through exposure to the sun?

Thanks
 
I have a largish flat roof area (approx. 35m2) which was done in 2001. It is Firestone EPDM over OSB deck.

It still looks as good as the day it was laid. It has a 25 year guarantee and I was told that it should last at least 40 years but the product hadn't been around that long to verify the claim.

The previous flat roof lasted about 10 years and also got covered with moss and muck. The EPDM just washes off with a mop.
 
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Thanks for the replies, much appreciated. I think I'm going to go ahead and get it done. Is there a minimum thickness of plywood I should b expecting the guy to use?
 
Just 1 more question, iv already had a look for an answer but can't find anything. The roof that I need replacing is enclosed on 2 sides by roughcasted walls, my question is how can the Epdm be sealed onto the roughcast wall. I believe it's standard practice to leave a layer of 2 bricks at the bottom of walls however in this case the roughcast comes right down to the level of the roof.

Thanks
 
My upstand is into brick but I guess the principle is the same. A slot is cut into the wall (mortar course for bricks) probably about 35mm deep. This is piped with builders silicone and the edge of the rubber is poked in. Then a piece of metal angle is pressed into the slot above the rubber and then comes down about 75mm or so. The angle is also bolted into the wall.
 
Thickness of ply (or other) would depend upon general arrangement and strength of the frame underneath.
Your looking to get a strong, solid surface.
Perhaps the people that are fitting these may come in with suggestions.
In my project I used 2 layers, but at this moment in time I can't recall whether it was 2x12mm or 2x18mm, although I do think it was the latter.
A bit overkill for the job but i'll err on over-engineering side of things.
Make sure its roofing material and not the pond liner as they are allegedly different chemical make ups.
 
Use 18mm T&G OSB 3 roof boards, 2.4x1.2

The EPDM wont stick very good to rough surfaces, you need to fix some 9mm ply screwed to the wall, minimum 150mm upstand, the ubber can be contact adhesive to it.

Ideally you would run a cutter along the render, fit the rubber then trims or lead flashings, followed by a bell cast bead and render.
 

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