Originally Posted By: pcarter This post was automatically imported from our archived forum.
A question:
The past 5 homes I inspected, I have found asphalt singles on wood shake shingles. I have been told this is unacceptable for home insurance and the major insurance companies are not insuring these homes. Is this true? if so what is the reasoning behind this from the insurance perspective? Is it because of the weight of asphalt shingles in addition to the wood shake shingles to much for the 1x2 plank sheathing that is used for wood shake?
I have put in my report when I find this, the seller should check with their preferred insurance carrier to find out if the roof is insurable to cover my behind side. Is there a better way of addressing this?
-- Patrick C.
Town & Country Home Inspection Services, LLC
(Serving S.E. Kansas, Cruising the 169)
Originally Posted By: dedwards This post was automatically imported from our archived forum.
Not only that but it must look like Fido’s behind. How do the asphalt shingles lie down properly on top wood shakes? If you have a picture it would be great. I for one would like to see this. Thanks
Originally Posted By: pdickerson This post was automatically imported from our archived forum.
Let’s be clear about what we are talking about here. The IRC says no comp roofing over wood shakes, but does not restrict installing additional layers over wood shingles. I would assume that this is because shingles are cut and are thinner than shakes, which are split and uneven. I have a home that has a comp roof over shingles, and it does not look hideous. I have never seen a comp roof installed over shakes, and I am certain that such a thing would look awful.
Originally Posted By: gbeaumont This post was automatically imported from our archived forum.
Hi to all,
907.3 Recovering versus replacement.
New roof coverings shall not be installed without first removing existing roof coverings where any of the following conditions occur:
1. Where the existing roof or roof covering is water-soaked or has deteriorated to the point that the existing roof or roof covering is not adequate as a base for additional roofing.
2. Where the existing roof covering is wood shake, slate, clay, cement or asbestos-cement tile.
3. Where the existing roof has two or more applications of any type of roof covering.
Exceptions:
1. Complete and separate roofing systems, such as standing-seam metal roof systems, that are designed to transmit the roof loads directly to the building's structural system and that do not rely on existing roofs and roof coverings for support shall not require the removal of existing roof coverings.
2. Metal panel, metal shingle, and concrete and clay tile roof coverings shall be permitted to be installed over existing wood shake roofs when applied in accordance with Section R907.4.
907.4 Roof recovering.
Where the application of a new roof covering over wood shingle or shake roofs creates a combustible concealed space, the entire existing surface shall be covered with gypsum board, mineral fiber, glass fiber or other approved materials securely fastened in place.
Originally Posted By: lwillick This post was automatically imported from our archived forum.
Hi Gerry:
On the west coast of Canada I see many roof over pre-existing roofs.
The worst incidences appear to be over lapping asphalt shingle applications over existing wood shake/shingles. I write these up as defects. I have lost a lot of business from realtors due to my more intelligent reports. Also roofs over roofs have a tendency to deteriorate much quicker. They do copy, when asphalt shingles are the second or third layer, most of the problems of the pre-existing roof. Too many times when the situation is evident the asphalt roof is also an over lapping shingle. These also do not bond adequately to the under roof material. If the home owner must insist on layering the roof, at least it should be an t-loc inter locking asphalt shingle. One must also consider the I don’t care attitude of the roofer who is installing these defective roofs. There does not seam to be any building code input on this subject.