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agmines

05:14PM | 11/21/04
Member Since: 11/20/04
2 lifetime posts
Bvroofing
OnDura at:

http://www.ondura.com/home.htm

Ondura re-roofs over practically anything.

Ondura can be applied directly over even surfaces like asphalt shingles. Or over uneven surfaces by first installing nailing strips. In a re-roof application, that saves you the bother and expense of having to tear off an old roof. And that makes re-roofing easier, faster, and cheaper.

Sheets

Size: 48" x 79" each

Weight: 18 lbs.

Sheets per covered square: 4.5

What if I have a Double Shingle Roof already of 35 Square Feet on an Old House built with a Cable Roof in 1950's in Pittsburgh????

Is OnDura too heavy and what about snow making it heavy and what about electrical heat gutters hurting it???

I am being told by contractors that Three Layers is too heavy for a roof, and is Ondura too heavy as the Third Layer???

Please Respond ASAP!

agmines@yahoo.com

Piffin

02:24PM | 12/05/04
Member Since: 11/06/02
1281 lifetime posts
Ondura is undoubtedly the poorest excuse for a rof material that I have ever seen or had the displeasure to repair.

Three layers of roofing is getting to be too much

Excellence is its own reward!


wandaejg

07:08AM | 08/03/06
Member Since: 08/02/06
1 lifetime posts
I used it on my horse barn and found it easy to install, but we would not use it on a house. There are nicer looking panels or tiles out there. This is a less expensive roof than metal. But, if a tree branch fell on it ... So you get what you pay for. We like it for the use we put it to.

WandaEJ-G

ourownhouse

06:36PM | 07/18/07
Member Since: 07/17/07
1 lifetime posts
If your roof rafters are equal to today's 2x6's (which are actually an inch and a half by five and a half) -incidentally a 1950's Pittsburgh home almost undoubtedly has such, it is unimaginable that Ondura over two layers would be any strain whatsoever with two shingle layers. Unless your rafters are badly rotted or termited to the hilt, you will will find they are far harder than today's lumber. Your rafters are probably made of poplar which is yet evn stronger. But even if they are pine, (like today's rafters), if they are of the size as I stated, I would not trust another word of those contractors. My house too is 1940's with 2700 sq ft of roof with 2x6 rafters and 30" overhangs. The roof doesn't even know it's up there.
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