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TONGUE AND GROOVE ROOF SHEATHING
TONGUE AND GROOVE ROOF SHEATHING:
Tongue and groove sheathing lumber has a tongue
on one edge and a groove on the opposite edge.
2"x 6" T & G sheathing is commonly
found in open beam construction such as A-frame
cabins, etc. The beams are spaced apart such a
distance that thicker wood such as this is
needed to span the distance between the beams
without warping over the years many have been
plagued by moisture problems associated with
slab floors due to the lack of an effective
moisture barrier under the slab. Newer
construction should have a moisture barrier,
such as plastic sheet material, placed under the
slab to help prevent moisture from migrating
upward and damaging flooring and furniture.
Drainage away from this type floor and
foundation system is very important. Try to
prevent water from standing against the
foundation. See the Grounds chapters for related
information. Some slabs have air-conditioning
and heating ducts in them. If moisture gets into
the ducting the building could develop moisture
and mold problems. Framing members, typically
placed on the slab outer edge, can be more
vulnerable to wood boring insects and dry rot
due to their proximity to earth. There should be
at least 6 inches clearance between earth and
wood. Often water pipes will be imbedded in the
slab. These usually pose no problem and is
normal construction. Repairing a broken pipe
within a concrete slab, should a break ever
occur, is not too difficult if you have the
right tools and equipment. Generally slabs will
be reinforced with wire mesh or reinforcing bars
but do not always have to be, pursuant to local
building codes. The inspector is not allowed to
dig or probe in the yard without a written
release from the owner of the property. Should
these limitations be of concern to you please
contact the inspection company for further
discussion.
The above information was provided by TWI Systems Copyright 1995-2005 1-800-553-5660 |
