Staying Cool with a Metal Roof - GreenBuildingAdvisor
2012年5月21日 · I can say from practical experience that nothing beats a white metal roof reflectivity (> .80 - .90) and high emissivity (> .80 - .90). Galvanized and Galvalume metal …
Eliminating Condensation on Underside of Metal Roof
2020年12月19日 · All metal roof manufacturers require an underlayment under the roof. The lowest cost is standard synthetic roofing underlayment. You can skip it but will eventually get …
How to Choose a Metal Roof - GreenBuildingAdvisor
2019年9月13日 · Could the asphalt rot before the metal roof is due for replacement decades from now? 2. If I opt for striated panels to minimize oil-canning issues, could this create problems …
Replacing a Quonset Hut Roof - GreenBuildingAdvisor
2022年1月9日 · Yes, the metal roof is not the WRB anymore and you have to add that which is itself a kind of waste but maybe fixing the existing roof is worse than separating the job and …
Would like to know if applying rigid foam under metal roof is ...
2011年4月4日 · I will be replacing the old corrugated metal roof on my house with a new Standing Seam style metal roof. I am doing this in preparation for installing Solar panels, and I will be …
Utilize an air gap under a metal roof above a conditioned attic ...
2020年1月5日 · 1) Metal roofing mounted directly on the deck without Above Sheathing Ventillation (ASV) results in about the same heat flows into the attic as asphalt shingles. 2) …
Metal roof on purlins and heating - GreenBuildingAdvisor
2017年11月15日 · Hi I had a metal roof guy tell me my roof won't pass code and will have water issues. (I don't believe him, so though I would ask the experts) The plans passed and I got a …
Spraying Polyurethane Foam Over an Existing Roof
2013年2月4日 · When Taya and Stephen Shoup's old tar-and-gravel roof began leaking, the couple hoped to find a replacement roofing that would be energy-conserving, leakproof, cost …
Metal over exterior rigid insulation? - GreenBuildingAdvisor
2018年12月17日 · We intended to use a cement board with a parge coating, but we couldn't find long enough flat-head concrete screws to sufficiently penetrate 5" of Rockwool and the …
Preventing Roof Algae - GreenBuildingAdvisor
2023年4月28日 · This roof has three rectangular vent penetrations. The one on the left has painted steel flashing which has no effect on roof algae. The two penetrations on the right are …