Treated Ply

Pressure Treated/Tanalised Ply

Do we stock Tanalised Ply – yes, we keep large stocks of pressure treated ply at Southern Timber. While we use the phrase “tanalised” it should pribably be “AC-500” because that is the preservative currently being used.  Above all the objective is to improve the durability of  a quality ply when used in humid and damp conditions

Using old terminology our standard ply sheets use WBP (waterproof & boil proof) glues. However, the faces and edges of standard ply are susceptible to water ingress which will ultimately lead to fungal growth and de-lamination of the ply. By pressure treating whole sheets of ply with Tanalith E or AC-500 preservative this reduces the adverse effects of moisture.  Where this ply is cut into smaller sections the edges should be treated with a suitable preservative to prevent this moisture ingress.

Tanalised Ply and AC-500 Ply stocked:

9mm AC-500 Pressure Treated WISA Spruce Structural Ply (EN314-2 Class 3, EN636-2, CE2+) 2440mm x 1220mm

12mm AC-500 Pressure Treated WISA Spruce Structural Ply (EN314-2 Class 3, EN636-2, CE2+) 2440mm x 1220mm

18mm AC-500 Pressure Treated WISA Spruce Structural Ply (EN314-2 Class 3, EN636-2, CE2+) 2440mm x 1220mm

Finnish quality Spruce Ply is graded for strength rather than for appearance. For many construction applications a ply is required that is structurally graded, will deal with variations in moisture and also cuts into smaller sections. At Southern Timber we purchase this quality Spruce Ply which is manufactured in Finland using high-quality Nordic wood as raw material. These spruce plys are bonded with weather resistant glue according to EN 314-2/class 3.