More stringent regulations on volatile organic compounds in exterior wood coatings in Canada have prompted many companies to reformulate their products so there is little impartial data available on their medium to long term field performance. Selected commercial semi-transparent penetrating stains were evaluated in a field test after six months of exposure in Maple Ridge, British Columbia. All coatings exhibited some colour change and degradation; however, additional exposure time is needed to differentiate product performance.
Treatment options are needed to enhance the fire performance of thin structural members without generating additional char. This review explores potential opportunities for low-char fire retardant treatments and fire protective coatings for wood products, and briefly discusses the technical and code-based barriers to their adoption.