IRG Documents Database and Compendium


Search and Download IRG Documents:



Between and , sort by


Displaying your search results

Your search resulted in 3 documents.


Exterior weathering trials on radiata pine roofing shingles
1985 - IRG/WP 3240
A series of test roofs clad with radiata pine (Pinus radiata D. Don) shingles that had been pressure-treated with various water-borne preservative formulations were installed at a Forest Research Institute test site in Rotorua in 1977. A further series of test roofs installed in 1978 included radiata pine shingles pressure-treated with a commercial light organic solvent preservative (LOSP). Evalua...
D V Plackett, C M Chittenden, A F Preston


Corrosion of zinc-coated nails used with preservative-treated western red cedar shakes in service
1982 - IRG/WP 3197
The corrosion of metal fasteners used with certain wood species and with preservative-treated woods can be a serious problem. The chemical reactivity of western red cedar (Thuja plicata Donn) extractives to iron and copper is well documented and wood preservative treatments containing copper, chromium, and/or ammonium hydroxide can be expected to similarly attack some metals. This problem is compo...
R S Smith, E L Johnson, A J Cserjesi


The potential for reuse of treated wood poles removed from service
1993 - IRG/WP 93-50001-18
Poles removed from service in Ontario and Quebec, Canada were characterized by age, wood species, preservative type, residual preservative, dimensions and condition. Based on this charactarization, the potential for reuse as round poles or posts, sawn posts, timbers and lumber, cedar roof shingles and firewood was assessed. A pilot study was conducted to evaluate the recovery and grade of lumber p...
P A Cooper