Question 1

1. What is CLS timber?

Accepted Answer

CLS timber stands for Canadian Lumber Standard timber. It‘s a type of softwood timber that’s been specifically prepared for construction purposes, particularly framing in housebuilding. CLS timber is planed and usually kiln-dried, with eased edges. It’s commonly used for stud walls, partitions, and general framing.

Question 2

2. Is CLS timber treated?

Accepted Answer

Some CLS timber is treated to resist moisture and decay, especially if used in damp environments. Always check the product details to confirm if it’s treated or untreated.

CLS timber

CLS Timber FSC 38 x 63 x 2400mm

CLS Timber PEFC 38 x 89 x 2400mm

Bsw Home Grown C16 Cls 50 x 100mm x 3.0m

Bsw Home Grown C16 Cls 50 x 75mm x 3.0m

50x100 Homegrown CLS 2.4m

50x100 Homegrown CLS 4.8m

CLS Timber FSC 38 x 63 x 3000mm

CLS Timber PEFC 38 x 89 x 3000mm

50mm x 100mm x 2.4m CLS C16 Home Grown

50mm x 75mm x 2.4m CLS C16 BSW Home Grown

38mm x 89mm CLS Studwork Timber C16 (4" x 2") 2.4m

38mm x 89mm CLS Studwork Timber C16 (4" x 2") 4.8m

50x75 C16 Kiln Dried CLS 4.8m

Homegrown CLS UC3 Green 100 x 50mm (89 x 38) 4.8m C16 FSC