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Treated Wood
Treated Wood
...preservative-treated wood can have 5 to 10 times the service life of untreated wood. This extension of life saves the equivalent of 12.5% of Canada’s annual log harvest. Preserved wood...
Environmental product declarations (EPDs)
...Canadian Oriented Strand Board View Resource An Industry Average EPD for Canadian Softwood Plywood View Resource A Regionalized Industry Average EPD for Canadian Wood Trusses View Resource Stakeholders within the...
Assessing and Restoration of Decay
...sure why. If wood is badly decayed, this will be quite obvious. The wood will be softer than normal and perhaps even be breakable by hand. Decayed wood often has...
Choosing and Applying Exterior Wood Coatings
...and follow all manufacturer’s instructions. Surface Preparation for Aged Wood Wood coatings need a fresh surface or the coating simply won’t last. The longer wood has been allowed to weather, the poorer...
Factory Finishing
Select heartwood where possible to minimize nutrient content of wood surfaces and prevent nutrients migrating through the coating to support fungal growth on the surface. Round all corners to minimum...
Performance Factors
...use of treated wood apply when coating preservative-treated wood. Effect of bluestain Bluestain is caused by fungi, and bluestained wood is more permeable than unstained wood, therefore it may absorb...
Finishing Quick Tips
For new wood, remember: The wood must be dry. Drying time depends on a few factors. Ideally the wood should be kiln-dried (stamped “S-DRY”, “KD” or “KDAT”, see glossary of...
Glossary
...Soluble chemicals particularly present in the heartwood of some species which provide the wood with resistance to decay and insects. Fungicide A substance which inhibits the growth of fungus.  Often...
Canadian Preservation Industry
Canada has had a wood preservation industry for about 100 years.  Canada is tied with the UK as the world’s second largest producer of treated wood (the USA is first,...
Durability Research and Development
FPInnovations has been field testing the performance of treated wood products for years. Click one of these categories for performance data from our field tests. Borate-treated Wood vs. Termites Round...
Wood’s Durable Heritage
...of how to protect wood from decay and fire, we can expect today’s wood buildings to be around for as long as we wish. While wood does not have the...
Wood Advantages
Wood is resistant to some of the chemicals destructive to steel and concrete. For example, wood is often the material of choice when exposed to: organic compounds, hot or cold...

Flame Spread

Flame spread is primarily a surface burning characteristic of materials, and a flame-spread rating is a way to compare how rapid flame spreads on the surface of one material...

Fire Resistance

In the National Building Code of Canada (NBC) “fire-resistance rating” is defined in part as: “the time in minutes or hours that a material or assembly of materials...

Construction Sites

The vulnerability of any building in a fire situation is higher during the construction phase when compared to the susceptibility of the building after it has been completed...

Structural Design

A structure must be designed to resist all the loads expected to act on the structure during its service life. Under the effects of the expected applied loads, the structure...

Lumber properties

For many years, the design values of Canadian dimension lumber were determined by testing small clear samples. Although this approach had worked well in the past, there were...

Permanent Wood Foundations

A permanent wood foundation (PWF) is an engineered construction system that uses load-bearing exterior light-frame wood walls in a below-grade application. A PWF consists of...

Durability by design

“Durability by design” is the most important aspect of durable solutions.  It starts with using dry wood, storing it appropriately to ensure it stays dry, and then...

Durability by nature

For outdoor applications of wood, we have a strong tradition here in North America of using our naturally durable species: Western red cedar, Eastern white cedar, yellow...

Durability by treatment

Treating Methods There are two basic methods of treating: with and without pressure. Non-pressure methods are the application of preservative by brushing, spraying or dipping...

Finishing Exterior Wood

The appearance of wood can be modified with the application of an architectural coating. Architectural coatings are surface coverings such as paints and stains applied...

Non-Pressure Treated Wood

Non-Pressure Treated Wood For most treated wood, preservatives are applied in special facilities using pressure. However, sometimes this isn’t possible, or the need for...

Pressure Treated Wood

Preservative-treated wood is typically pressure-treated, where the chemicals are driven a short distance into the wood using a special vessel that combines pressure and...

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