Pressure Treated Wood Roof

Invented in the early 1930 s cca treatments protect wood against insect attack and fungal decay and is expected give life to the wood in the excess of forty years.

Pressure treated wood roof.

A client is considering pressure treated cedar shingles for the roof on his new house. Interior walls are within a climate controlled environment and are presumed to be free of moisture. Todd miller isaiah industries inc. In my 13 plus years installing cedar roofs i have been asked to install regular.

Can one use pressure treated lumber in metal plate connected truss construction. Some low level leaching the chemical preservative leaking from the wood can also be a problem with indoor projects. The sawdust from pressure treated wood is an irritant to the eyes skin and nose. While naturally resistant to rot and decay western red cedar shingles and shakes that have been treated with chromated copper arsenate cca will add years to the life of your roof or siding.

Note that this requirement is only for exterior walls as these may wick moisture onto the lumber. This table is intended to give you an idea as to what pressure treated wood might weigh at its heaviest so the values given use the heaviest wood species southern yellow pine longleaf commonly used to produce pressure treated lumber with the highest amount of water commonly added to the wood during treatment close to four gallons or about 32 lbs per cubic foot immediately after. Perry mastrovito design pics getty images. Pressure treated wood is required whenever you attach framing lumber or furring strips directly to concrete or other exterior masonry walls below grade.

Wood for any outdoor project should be pressure treated. You are correct on the treated lumber thing. If so are special plates or coatings required. Wood for indoor projects should be left as is.

Chris yerkes a cedar shingle installer certified by the cedar shake and shingle bureau cssb and owner of cedarworks in brewster mass responds. If you go with battens you will need to go with raw untreated lumber or painted lumber. Whether pressure treated lumber is appropriate for trusses depends on the preservative used in the treatment process. What are the pros and cons to using these shingles vs.