PinkWood manufactures premium I-joists, under the trade name "PKjoists". They are primary 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 2x3 (PKI 10, 20, 23) or 2x4 (PKI 35+, 40, 50) flanges with specific proprietary lumber grade.
Our PKjoists are available in four 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.
We refer to our Fire Rated joists as "SAFEJoist" because they are so much less susceptible to fire. Our SAFEjoists are protected with intumescent Fire Rated Coating. These joists have tan coloured coating on the web, and a pink protective coating on the ends. Our Fire Rated series are available in three performance levels: Class A, Class B, 2012/2015 IRC compliant .
2. Class A, Fire Rated I-Joists
The 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.
3. Class B, Fire Rated I-Joists
The Class B Fire Rated I-joists have a web with a flame spread rating from 26 to 75. These joists take approximately 2.5 times as long to burn through as unprotected joists.
4. 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:
- Sprinkler the home, or
- Drywall the basement, or
- 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 2x10 is stipulated in AC-14.
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.