What is K-33®?

K-33 is a chromated copper arsenate (CCA) wood preservative, used in the pressure treatment of wood to help protect it against fungal decay and termite attack.


Typical Applications for
CCA treated wood products:

• Utility Poles

• Foundation Piling

• Highway Uses

• Salt Water Marine Uses

• Permanent Wood Foundations

• Agricultural timbers, posts and poles

K-33® - Timber Specialties Limited.
K-33® - Timber Specialties Limited.


For a listing of permitted uses of CCA in Canada, click here to download

Pest Management Regulatory Agency
Re-evaluation Note REV 2006-07 “ Label Guidance for Use of Chromated Copper Arsenate (CCA)