tongue groove question?

AC210OL990

New User
I have an old pole shed which is sided with tongue and groove siding. I would like to know if it would be ok to put metal siding over it or should it be removed? Thanks!!
 
Leave the old siding on, it helps keep the building rigid in the wind. If it's not solid enough to fasten your steel siding to it, go over top of the old siding with new wooden strips to fasten your new siding to them.
 
There's no problem putting steel over wood. Two things to consider first are, is the existing wood secure? Not weak/rotten? If so, the other main thing is to ensure that there is proper air flow so that there is not trapped moisture up against the steel. High moisture would shorten the useful life of your siding. Other than that, should be no problem.

If you think there "might" be a potential moisture issue, you could always run some horizontal nailer strips on the wood, then attach your steel to them. You could use 2x3 or 2x4's, but really should only need 1x's to allow air flow between the existing wood and the new steel.

Lastly, I always recommend using screws rather than nails when dealing with steel roofing/siding. The nails have a tendency to work out some over the years, which can allow for leaks as well as compromising the holding integrity of the fasteners.
 
When you say metal siding are you referring to ag-steel or residential lap?

Either way I agree that screws will hold better than a nail if it is a true pole shed and not stud framed. leave the old T&G on for strength. If it's insulated than maybe building paper would be an option for condensation between layers, but not a must.
 
As long as you put some kind of water proofing between the wood and metal you would be alright. This could be as little as polyethylene plastic. A rubber membrane would be a lot better especially if you live in a damp climate.
 

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