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5929 6th St. NE
Calgary AB, T2K 5R5


Pinkwood's Engineered Wood I-joists and finger joined lumber are manufactured in western Canada with Class A & Class B fire ratings


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PinkWood manufactures premium I-joists, under the trade name "PKjoists". They are primarily used as part of the floor systems in residential and commercial housing projects. PKjoists are manufactured to precise tolerances on high-speed equipment with integrated coating technology to yield the best possible physical properties and to maximize strength. Our I-joists will resist warping, crowning and shrinking.

Our residential joists are available in six series ranging in depths of 9.5" up to 24", and are manufactured in long lengths up to 58'. Our PKI Series are manufactured with either 2 x 3 (PKI 10, 20, 23) or 2 x 4 (PKI 35+, 40, 50) flanges with specific proprietary lumber grades.

Our PKjoists are available in three categories:

1. Standard, Uncoated I-Joists

Our Standard joist has a pink protective coating only on the ends. The purpose of the end coating is to protect the joist against moisture penetration.

2. 2012 IRC, Section R501.3 or 2015 IRC, Section R302.13 Compliant

In 2012, the International Residential Code (IRC), Section R501.3 was amended to provide for "Fire Protection of Floors". It was updated in 2015 IRC, Section R302.13. This Code change, which is now being introduced in a number of jurisdictions, stipulates that if wood I-joists are used in residential home construction, the builder must do one of three things:

  1. Sprinkler the home, or
  2. Drywall the basement, or
  3. Protect the joists to achieve fire performance equivalent to a solid sawn 2x10

The test protocol which sets out the testing required to achieve the "equivalency" to a 2 x 10 is stipulated in AC-14. For more information, please take a look at our IRC Solution tab.

PinkWood has developed a proprietary method to meet the requirement. We have successfully tested joists with 2 ft. lengths of OSB panels coated with PKshield, our proprietary intumescent coating, and stapled to the web at 4 ft. on center. These panels (called WEBshields) can be stapled onto the sides of our Standard joists, or onto the sides of our Class A or Class B Fire Rated joists.

Standard I-Joist with WEBshield panels (FRI series)

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3. Value Added Fire Resistance


In addition, PinkWood offers Class A and Class B Fire Rated joists often referred to as "SAFEJoist" because they are so much less susceptible to fire. Our SAFEjoists are protected with intumescent Fire Rated Coating, and have tan coloured coating on the web and a pink protective coating on the ends.

Our Class A Fire Rated I-joists have a web with flame spread rating of 25 or less. These joists take approximately 5 times as long to burn through as bare, unprotected joists. The flame spread rating of the web at our Class B Fire Rated I-joists ranges from 26 to 75. It takes approximately 2.5 times longer for these joists to burn through when compared to unprotected joists.