Roll Roofing Help?
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Roll Roofing Help?
I have a small shed atatched to my shop with a very shallow pitch. The roof has started leaking so I've stripped it and am replacing the damaged wood before recovering it. The roll roofing says to lay felt under it like you would with shingles. The original layer (second one down) was roll roofing with some sort of tar or mastic under it? Is this a better method and what would I use? I think the felt would just be another layer to move around with heating and cooling. Anyone familiar with roll roofing would be a huge help!!! Thanks in advance for any help you can offer!!!
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From: Seattle
In the two occasions I have used roll roofing, I have always applied it directly to the sheathing and have had good luck. Here is a do-it-yourself web site that says the same thing:
http://www.homestore.com/HomeGarden/...?poe=homestore
I believe the logic here is that because of the 50% overlap of this particular roofing material, additional felt is not needed, and as you say, may also have something to do with 'movement'.
http://www.homestore.com/HomeGarden/...?poe=homestore
I believe the logic here is that because of the 50% overlap of this particular roofing material, additional felt is not needed, and as you say, may also have something to do with 'movement'.
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From: NY and VA
Here nailing is the key, and future removal. Use felt for the first course if using dble coverage, all the way if using reg roll roofing with about 36" exposure. I like to use a "modified" roofing with a base similar to felt. This is a rubberized roofing material and last a lot longer than others, similar to the torch-down roofing used on comercial buildings but, is a "cold" adhesive application. More expensive but worth it in the long run.
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I had bought the organic mineral roll roofing. Not much available at the home centers. I went back and bought the adhesive snow and ice sheild to use as an underlayment. Not the cheapest way but shouldn't move around. I wish I had the resources to cotinue the barn style roof across this section now. I guess that'll come later. Hopefully this'll get me by until then. Thanks for everyones help so far.
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We've had a rolled roof for 11 years on our workshop addition and it's pretty flat. It's actually held up pretty well, maybe because it's a little more sheltered from the typical hail storm and facing sorta north.
The felt is a must, when a hole's punched or worn through the outer layer, the felt's all you got till you patch or repair. Heavier felt's a lot better. I haven't used the latest stuff.
For a small shed, rolled should be fine. If the roof framing and sheating can handle it, you can always put shingles on over it later. I agree shingles are more attractive and many times better in protection.
Avoid tearing it up as you move around whle installing, especially on warm days and it'll help a lot too.
-Smoky
The felt is a must, when a hole's punched or worn through the outer layer, the felt's all you got till you patch or repair. Heavier felt's a lot better. I haven't used the latest stuff.
For a small shed, rolled should be fine. If the roof framing and sheating can handle it, you can always put shingles on over it later. I agree shingles are more attractive and many times better in protection.
Avoid tearing it up as you move around whle installing, especially on warm days and it'll help a lot too.
-Smoky
Last edited by SmokyOlFord; Aug 15, 2005 at 10:26 PM.
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Guys thanks for all the info and links. I went with the old three tabs and backed them down.I used the snow and Ice sheild underlayment.After finding/replacing some rot I wanted the least chance for trouble. Even replaced the window sash I broke working on the roof. Ironically it was a pretty new peice of glass from when I firmly placed a box with motorcycle forks near it.
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