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Flat Roofing Material Hambone 10-05-2006
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Posted by Hambone on October 5, 2006, 9:58 pm
Hello - we are adding an addition to our modern home and it will have an
almost flat roof. I am so hesitant to put a flat roof on with all the
problems I have read about, but the wife wants it and it will look nice.
We will have *some* pitch on the roof - likely around 1/12 or less.

So the questions:
- Any recommendations on how to not get leaks?!
- Any recommendations on what to use for roofing material? I have read
that 'normal' shingles can't be used for less than 3/12 pitch.

Thanks.

Posted by marson on October 5, 2006, 10:29 pm

Hambone wrote:
> Hello - we are adding an addition to our modern home and it will have an
> almost flat roof. I am so hesitant to put a flat roof on with all the
> problems I have read about, but the wife wants it and it will look nice.
> We will have *some* pitch on the roof - likely around 1/12 or less.
>
> So the questions:
> - Any recommendations on how to not get leaks?!
> - Any recommendations on what to use for roofing material? I have read
> that 'normal' shingles can't be used for less than 3/12 pitch.
>
> Thanks.

asphalt shingles can be put on a 2/12 pitch provided you have two
layers of 30 lb felt with tar in between or more likely, ice and water
shield.

However, on a pitch of 1/12 you will want a EPDM membrane roof (aka
rubber). find a roofer who has worked with it and you won't have any
trouble.


Posted by longshot on October 6, 2006, 6:15 am

>> Thanks.
>
> asphalt shingles can be put on a 2/12 pitch provided you have two
> layers of 30 lb felt with tar in between or more likely, ice and water
> shield.
>
> However, on a pitch of 1/12 you will want a EPDM membrane roof (aka
> rubber). find a roofer who has worked with it and you won't have any
> trouble.

you could use rolled asphalt for about 10% of the cost of the rubber
roofing. what part of the world is this project in?



Posted by marson on October 6, 2006, 8:31 am

longshot wrote:
> >> Thanks.
> >
> > asphalt shingles can be put on a 2/12 pitch provided you have two
> > layers of 30 lb felt with tar in between or more likely, ice and water
> > shield.
> >
> > However, on a pitch of 1/12 you will want a EPDM membrane roof (aka
> > rubber). find a roofer who has worked with it and you won't have any
> > trouble.
>
> you could use rolled asphalt for about 10% of the cost of the rubber
> roofing. what part of the world is this project in?

you get what you pay for.


Posted by longshot on October 6, 2006, 10:39 am

>
> longshot wrote:
>> >> Thanks.
>> >
>> > asphalt shingles can be put on a 2/12 pitch provided you have two
>> > layers of 30 lb felt with tar in between or more likely, ice and water
>> > shield.
>> >
>> > However, on a pitch of 1/12 you will want a EPDM membrane roof (aka
>> > rubber). find a roofer who has worked with it and you won't have any
>> > trouble.
>>
>> you could use rolled asphalt for about 10% of the cost of the rubber
>> roofing. what part of the world is this project in?
>
> you get what you pay for.
>
I agree. I guess it depends on the project, if it was on the mudroom of a
doublewide, I'd probably go with the EPDM. if it was just a regular home
trailer.. well... you get the idea. :-)



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