Re: finally finished
While it is not absolutely necessary to separate treated lumber from the ground (or masonry) it is still a very good idea to use a barrier of some sort. Almost any non-metallic material can be used - heavy polyethylene film, vinyl, house wrap paper, roofing felt, rubber roofing membrane, etc. - as long as it acts as an effective water and vapor barrier and will not rot. These materials will extend the life of the treated lumber.
It is very important to prevent water from entering the structure and getting in between the lumber and the barrier where it will be held and will not easily evaporate.
Good luck!
While it is not absolutely necessary to separate treated lumber from the ground (or masonry) it is still a very good idea to use a barrier of some sort. Almost any non-metallic material can be used - heavy polyethylene film, vinyl, house wrap paper, roofing felt, rubber roofing membrane, etc. - as long as it acts as an effective water and vapor barrier and will not rot. These materials will extend the life of the treated lumber.
It is very important to prevent water from entering the structure and getting in between the lumber and the barrier where it will be held and will not easily evaporate.
Good luck!
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