New answers tagged roof
The nails are copper. That's the same method used for slates, and the traditional method. And yes, when that connection gives out the slates DO slide off the roof. This can be caused by wood rot, deteriorated stone, or earthquake. The copper itself won't be the problem. Read up on slate technique, which is also used for thicker stone like you describe.
Leaking air, or leaking water? If leaking air, either replace it if it's degraded, or try duct joint sealant (which stands a somewhat better chance of lasting than duct tape.) "Leaking" water - a bathroom exhaust vent needs to be heavily insulated all along its length, and should preferably run straight up, then turn and slope gently to the outside, so ...
250lb cable ties are made, yes. "industrial zip ties" seemed to be a pretty good search string for finding sources. Probably more the cold making the plastic brittle than the basic strength of the zip tie. They do make "large, industrial" zip ties (I've seen 3 feet long and half an inch wide, and they probably go bigger) but you'll probably get better cost ...
I've lived in Canada and now the Midwest where snow can get good depth at either place. We've always used tarp reinforced with additional cross beams and tied with hard ties, but some off the shelf walmart tarp won't cut it. You need "heavy duty" tarp rated for all-weather use. You can generally expect reliability out of it for around 10 years. We tried the ...
How about Corrugated Roofing Panels? It's available in many different materials, easy to install, and is usually about $15 - $30 per panel. You'll need some underlying support structure, but how much and how strong it has to be depends on the amount of snow in your area.
Cut the PVC pipe just below the elbow. Slip a proper sized flashing on. Ensure it drapes "like a woman's dress" over the old flashing. Flip the elbow over, and cement the elbow back on. But if you were in a situation were the elbow could not be cut, then you'd want sticky roofing tape. This has much more structure than a tar like substance, and far ...
It is essentially heavy-duty corrugated painted tarpaper. I did one small roof with the stuff, and by the end of the process was quite certain I'd never use it again. If you want a corrugated roof, use metal; if you want a tar-based roof, either double-coverage roll roofing or normal asphalt shingles are a better choice.
Absolutely a horrible product. We installed it a year ago and it is leaking, it has not held up well in cottage country. We talked to several roofers after the fact for help they all agree it is a horrible product. After a year we have had to have the roof stripped.
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