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Roofing Building Code Requirements
I’m in Connecticut which makes use of 2015 IRC Code for roofing. I’m getting new asphalt shingles put in. The plywood decking underlayment is authentic to the house (in-built 1961) and is 3/8” thick. New development requires thicker plywood. My place is the plywood was code compliant when the decking was put in and doesn’t want substitute because it’s in good situation. Are there any sturdy opinions on the contrary? (Value of the brand new decking if required isn’t actually an element). Thanks!
Re: Roofing Building Code Requirements
In circumstances like this I’ve contacted my county constructing inspection division. There are somethings that the county requires underneath sure circumstances. Typically the contractors know all these guidelines however some is usually a bit “versatile” which I do not like so I examine myself. Simply for instance, I’ve a shed close to the water. I can do sure renovations similar to siding or roof restore but when I wished to do a tear down/re-build on the identical base it could not be permitted and if the county ever came upon they’d power me to take away it completely. If it had been my storage, which is away from the water there can be no points.
If you uncover that you’re driving a useless horse, one of the best technique is to dismount.
Re: Roofing Building Code Requirements
A few of it relies on your rafter spacing, however I anticipate you will want to interchange with 5/8″ plywood.
Re: Roofing Building Code Requirements
oldguy2828 wrote: ↑Fri Jul 26, 2024 9:48 am
I’m in Connecticut which makes use of 2015 IRC Code for roofing. I’m getting new asphalt shingles put in. The plywood decking underlayment is authentic to the house (in-built 1961) and is 3/8” thick. New development requires thicker plywood. My place is the plywood was code compliant when the decking was put in and doesn’t want substitute because it’s in good situation. Are there any sturdy opinions on the contrary? (Value of the brand new decking if required isn’t actually an element). Thanks!
Don’t have an excellent sturdy opinion. I’d most likely hold my mouth shut, and if the roofer brings it up, focus on with them. 1961 plywood may be a lot sturdier than newer, thicker plywood right now.
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Re: Roofing Building Code Requirements
oldguy2828 wrote: ↑Fri Jul 26, 2024 9:48 am
I’m in Connecticut which makes use of 2015 IRC Code for roofing. I’m getting new asphalt shingles put in. The plywood decking underlayment is authentic to the house (in-built 1961) and is 3/8” thick. New development requires thicker plywood. My place is the plywood was code compliant when the decking was put in and doesn’t want substitute because it’s in good situation. Are there any sturdy opinions on the contrary? (Value of the brand new decking if required isn’t actually an element). Thanks!
“Typically”….code ….allow and adjustments usually are not wanted for “substitute and restore of “current”…nevertheless, there’s a sure level the place it needs to be introduced as much as code.
In the event you’re doing a whole tear off right down to the ply/osb, and it’s flimsy or rotted out, there’s the choice of changing/and/or sheating over with 1/2″ osb on prime of the present so long as the underlying rafters are strong. It’s higher for the roofing materials if the sheathing is strong vs “flexy”.
Relying on the state and code, you may solely reroof over a shingle roof so many instances earlier than having to do a whole tear off.
j
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Re: Roofing Building Code Requirements
so can some jurisdictions. A non-compliance can generally stop a sale or set off a purchaser requirement to deliver into compliance inside a time frame. We had been unable to promote our home in MA within the 90s till we mounted a code violation. Luckily it was not incrementally costlier to do it then vs. earlier.
If you uncover that you’re driving a useless horse, one of the best technique is to dismount.
Re: Roofing Building Code Requirements
Shocked that 3/8 plywood handed muster a few years in the past. After all 1″ sheathing (precise 3/4″) was used earlier than plywood or OSB. CT can get numerous heavy moist snow. Any thought of what the rafter spacing and dimension is?
Re: Roofing Building Code Requirements
That is about the place I’m. Forgetting about code for a second, I would not need 3/8″ as my sheathing in snowy New England. I feel it is a worthwhile improve by itself deserves
Re: Roofing Building Code Requirements
In case you have any sort of photo voltaic load or scorching summers (i.e. the attic will get tremendous scorching, and also you want A/C) you would possibly severely take into account ripping that outdated stuff off and putting in new OSB with foil dealing with down. I put that in our separate storage/bonus constructing, and it is wonderful how a lot cooler and extra nice that constructing is in the summertime. Retains the warmth from radiating down.
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Re: Roofing Building Code Requirements
Are you able to see any deflection between rafters? As somebody stated, it might be a case of higher made plywood prior to now. In the event you plan to remain in the home I might most likely improve it to no matter code is. I might stick to plywood although as a result of I’ve seen some OSB I might not need on my roof.
Re: Roofing Building Code Requirements
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Matter Creator
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Re: Roofing Building Code Requirements
The rafters are 16” aside. 2” x 6” rafters. Thanks!
