C maximum recommended weather exposure for two ply roof construction.
Weather exposure roofing.
See figure a felt.
Utilizing the wrong panels or sheathing could compromise the structure which is exposed to weather.
Nails are exposed to the weather.
E maximum recommended weather exposure.
The classifications are based on material composition as well as the durability of the adhesives utilized in the manufacturing process.
Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.
Roof shingle exposure amount is the portion measured in inches or cm of asphalt shingle that remains exposed to weather as successive courses of shingles are installed up the roof slope.
This will only work if the old and new shingles have the same exposure.
Cdx should only be used for applications as outlined under exposure 1 above.
Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer.
D all coverage based on an average spacing between shakes.
Allowable shingle exposure may also vary by the shingle grade something that you might infer by visual inspection of the shingles matching.
B maximum recommended weather exposure for 3 ply roof construction.
If the existing roof s shingle exposure matches the new shingles the new shingles are sometimes nested onto the roof.
Fibrous material saturated with asphalt and used as an underlayment or sheathing paper.
Exposure 1 rated plywood commonly called cdx in the trade is sometimes mistaken as an exterior rated sheathing and erroneously used in applications for which it does not possess the required resistance to weather.
Of roof area when used as starter finish course at 10 exposure.
D all coverage based on an average 1 2 spacing between shakes.
B maximum recommended weather exposure for 3 ply roof construction.
Wood roof shingle exposure specifications.
The core material in an asphalt roofing shingle manufactured from glass fibers.
A five bundles will cover 100 sq.
By creating a barrier at the most vulnerable areas of your roof at the eaves and rakes in valleys around chimneys etc weatherwatch leak barrier will help prevent leaks due to water backing up in your gutters wind driven rain and in the north damaging ice dams.
We measure shingle exposure as the distance from the lower edge of an exposed roof shingle or shingle tab down slope to the lower edge of the shingle in the.
Shingle exposures for wood roofs.
Nesting is a technique where a roofing professional applies the top edge of the new shingle at the bottom edge of the old shingle.
C maximum recommended weather exposure for 2 ply roof construction.
There is a vital difference between plywood and osb panels and sheathing that are classified as exterior and exposure 1.
