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My understanding of building code relevant to the US is that an attached garage area must provide a fire barrier (not firewall) from any living space. A quick search shows how effective this regulation is at preventing relatively serious garage fires from engulfing a home. Piercing that fire block and providing a direct path to the attic is a terrible idea. ...


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As long as it is not a V8 engine block it should do fine. If you hammer anything on the surface, stay near the legs, toward the center you will feel the slight springiness. It will not let anything you are driving with the hammer, like wood chisels for example, will not perform like they should. That particular task may even be a bit unsafe over the span. ...


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I'm not sure for a specfically "2-gang" box. These are made for 4" and 4-11/16 and octagon boxes: and there are 1-gang "handy-box" covers with a knock-out as well. A 4" box will take 2 devices, but some 4" boxes are set up with tabs for the devices, while others are set up with corner screws like this plate uses and need a cover to hold devices in place.


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Many garage openers and remotes use a standard radio code for communicating, with the ID number programmed by a bank of DIP switches; you just have to set the remote's DIP switches to match the opener's. It sounds like your door, though, works with remotes that each transmits a unique ID, and your opener's controller can be taught that ID. There are, ...


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You can reuse the wires one of several ways. Run a separate ground wire Since it is a retrofit, you can add ground wire. (NEC 240.130). The 3 circuits can share one ground wire if they all originate in the same panel (as of NEC 2014‘s new 240.130D). The ground wire must be installed properly, and an appropriate size for each circuit it's grounding. ...


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A) No. Nothing short of an unbroken membrane will resolve the issue. Even if you were to tar each row of shingles, you'd likely miss a few spots and have long-term damage. The right solution is a rolled roof or rubber membrane, possibly underneath shingles if aesthetics are a concern. B) See A. C) The question is too broad for the SE Q&A format. Ask ...


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Probably, but "it depends". How much insulation, how well the ventilation ABOVE the insulation works at getting the summer heat from the roof out of that space. That part is critical. You don't mention eave or soffit vents, and if you don't have them, you don't have airflow to the ridge vent. As a small point of whatever, I have a metal-roofed building ...



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