Search results
Results from the WOW.Com Content Network
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 roofs are hot roofs. They have medium relfectivity and poor emissivity ( .15). Painting a bare metal roof with white house paint dramatically improves preformance.
Closed-cell SPF has an R-value of 6.5 per inch, making it the perfect antidote to the old roof’s dismal energy profile. The old roof assembly, with two layers of 1/2-in. fiberboard, achieved (maybe) R-3 or R-4. Four inches of SPF would bring it up to at least R-26; six inches would bring it to R-39. Spray foam was also particularly well ...
Metal roofing is available in a range of styles — from several kinds of standing seam to a variety of stamped metal shingles that look like slate, clay tile, and even asphalt. Paint and stone coatings are more sophisticated and more durable, giving roofing a very long service life while appealing to homeowners with a variety of aesthetic ...
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 doing rainwater harvesting. I will be using a high reflective coating on the metal roof to reduce inductive heating of the attic and thereby the house. I would like to construct my roof in the following manner ...
This is a good solution when building an open framed metal roof. Just wanted to share since many are not aware it exists. CondenStop is a fleece that is applied by the manufacturer to the underside of the metal panel. The fleece absorbs and stores condensing water vapor. The absorbed water will evaporate again to the ambient air under ...
Replacing a Quonset Hut Roof. Hello, I purchased a 40×17’ Quonset hut and there is a ton of water damage. The ceilings and above the of the dormers feel wet, so I suspect it is still leaking. I removed some of the rood and paneling and to my surprised the insulation didn’t look wet or dirty. This is a 1950’s style with 4ft framed knee walls.
Its a detached garage ( so not that worried anyway) the roof is a engineered truss 6/12 48″ O.C. with 2×4 purlins laid flat 24″ O.C. The plan was to have metal roof screwed to purlins, sofffit to ridge venting. ( not sure if I need this) Then blow in cellulose insulation. over the 1×4 strapping holding up the drywall.
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 concrete of the foundation. Instead, we reluctantly went with metal flashing, essentially just continuing what would've ordinarily been Z-flashing from the Zip sheathing down over ...
A dark roof gets hot, and that heat conducts downward into the attic. The best way to keep that heat out of the attic is to prevent it from being absorbed by the roof. When looking at white vs. black shingles, the more reflective white ones win. Their peak temperature is about 20°F cooler on a hot day.
Leachate from galvanized flashing prevents the growth of roof algae. 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 flashed with unpainted galvanized steel; metal ions leached from the flashing's zinc coating prevent algae ...