Have an eight year old 10/12 roof with firetreated cedar shingles that are coming loose. Can these be face nailed with stainless steel nails? The roof is about 100 sqs.
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can you post photos of this, full view and close up?
I'm curious as to why they are coming loose this soon. I am suspecting poor installation of one sort or another. Probably were installed with pneumatic fasteners and idiots who didn't pay attention to depth of drive, so the nails shot clean through the shingles, or nearly so - resulting in splits to the wood.
Face nailing is likely a short term fix that will lead to more splits and full replacement in 3-4 years, depending on your climate. But if that fits your budget, it could help. Just don't expect to get by for too long with face nailing.
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curioused,
Depending on the pitch of the roof and other such factors some cedar shingles have lasted more than 100 years..
Your situation is a real tradgedy..
Clearly there was a failure.. what caused the failure should be answered before a solution attempted..
Where they laid directly on top of plywood with out cedar breather? Thus the plywood is starting to rot? were they simply overdriven so the nails poked through or nearly so? What sort of exposure was used? How many are we talking about? A few? all, most, some?
Edited 4/29/2008 9:53 am ET by frenchy
There is a venting material between the shingles and plywood. The shanks of the nails are corroded just under the surface of the shingles, not at the plywood surface. The nails are not blown through. It looks like a reaction to the chemicals impregnated into the wood shingles is the culprit. The nails were galvanized.
Curiousd,
OH that makes a lot of sense.Cedar has tannins in it and galvanized nails often flake off exposing steel to the corrosion which rots the wood and rusts the nails.. That's why I used stainless steel nails.. yes you can put some stainless steel nails in untill you can get up there and replace all those shingles..
I'm really sorry..
if i were going to facenail... yes, i'd use a SS nail
but i'd slip a piece of Grace I&W under the shingle where the nails were going to go thru
sounds like someone didn't read the instructions for installing the firetreated shingles
i don't know, but i'd be willing to bet the mfr. spec's a non-corrosive nail... which to me is either silicone bronze or SS
and SS is easier to come byMike Smith Rhode Island : Design / Build / Repair / Restore
Frenchy,Could you expound a bit on what a 'cedar breather' is? I will be using cedar shingles on a small awning soon, so you've piqued my curiosity. Is it a product? Or are the shingles firred out somehow with an air space beneath? Thanks in advance.
Yersmay,
Both methods work, cedar breather is a recycled plastic product that spaces the shingles away from the surface slightly and allows the backside of the shingles to dry.
It's a product by Benjamin Obdyke Company. Looks like shredded wheat in a roll that you install over the sheathing. It lifts the shingles off the sheathing allowing shingles to dry evenly after they are wetted. Good stuff
I think you've hit the nail on the head
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I think my shake and shingle guru would want a dab of tar over the nailhead instead.
He ain't much of a guru then, LOL
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!