New answers tagged roofing
Don't use it---you will be sorry. I put it on a big job. Ondura turned the big job into big mistake. The material disintegrates in about 10 years. When they say it is environmentally friendly they mean it turns to compost right on your roof.
The roofers I've seen working with metal sheet cladding have usually used an air or electric nibbler to cutting single sheets. Composite sheets (metal, insulation, metal sandwich) generally get cut with a carbide tipped circular saw. In addition to a nibbler, I've also used a grinder to cut metal sheet, but as mentioned, it does usually leave a bit of a ...
You can make a good cutting blade for sheet metal roofing out of a cheap circular saw blade. Go find your old used circular wood cutting blades, without carbide teeth, or buy the cheapest circular saw blade you can buy. There is no point in messing up a good carbide tooth blade. They can be easily re-sharpened. Circular saw blades usually cut about 1/8 ...
It can also depend on how many layers you have down. Some places will allow up to three although I think two is the law in most places. I've heard roofers tell people on their third layer to wait until the shingles are really coming down since most likely when a shingle falls there will still be one or two underneath. That said it's not a guarantee.
It depends on what your goal is. If the goal is to never have water enter your house in any way then probably what you need to do is get one of the shingles that fell off and see what its lifetime rating is. Most are 15-20 years. If you are near that point and shingles are coming off then I would think about it. However shingles falling off doesn't ...
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