A roof’s main purpose is to protect what is underneath it. SPF roofing systems provide durable protection for the structure below. Spray foam is lightweight, as most SPF roof systems weigh less than a pound per square foot when installed. SPF is also seamless and self-flashing, and highly...
A flashing structure for installation along a roof edge to aid in proper drainage of moisture run-off. The sheet metal flashing includes a planar body portion for installation under the shingles or other roof covering and extending from a free edge to a parallel drainage edge. The flashing is...
So maybe your installer thought this installation was a clever way to use one static roof vent to exhaust two rafter bay spaces. For other readers: Blake's use of the acronym "NFA" refers to "Net Free Area" - the size of an opening through which air is permitted to pass. A popula...
a What strikes one first in a bird's -eye view of Beijing proper is a vast tract of golden roofs flashing brilliantly in the sun with purple walls occasionally emerging amid them and a stretch of luxuriant tree leaves flanking on each side. That is the former Imperial Palace, popularly ...
I can see a shingle cutout that extends over and above the top edge of the plumbing vent flashing (red oval): this will certainly be a roof leak. It is also an example of inexperienced or sloppy workmanship. Perhaps the roofer was "extending" the shingle coverage on the roof by using ...