38mm x 90mm Dense select structural Grade Southern yellow pine

£18.95 excluding VAT


38mm x 90mm Dense select structural (DSS) Grade Southern yellow pine C24 grade Southern yellow pine is a strong structurally capable material with a high aesthetic.

DSS grading rules allow some knots and wane, but these are limited.

Treated to UC4 ground contact ,and Kiln dried after treatment, this section provides a strong stable material for deck framing, screen building and crafting outdoor timber structures .

Sold extensively to conventional and composite deck construction.

At a glance

  • DSS structural grade stres rated C24
  • UC4 treated for ground contact
  • Some knots and wane may occur but generally of good appearance
  • Grown in the Southern states of the USA
  • Highest export grade Southern pine framing timber.
  • Available in 4890mm lengths only
  • Recommended Fixings – Stainless steel 5x75mm or 6.5x100mm landscape screws.
  • Colour will darken naturally to a nut brown with UV exposure or can be coloured with a tinted deck oil to suit any taste.




38mm x 90mm Dense select structural Grade Southern yellow pineĀ is produced from very low knot count tight grain dense timber produced at one specialty mill in Mississippi.

We carry a range of structural timbers of differing dimensions in this range all suited to differing uses from deck frames to pergola’s and pagoda’s , fence capping’s building a wide range of outdoor storage units , benches , gates and more, It’s a really versatile long lasting strong section of timber that gets put to a myriad of different uses.

This material is treated UC4 (ground contact) and with its super high 95% treatment uptake rate , kiln dried stability C24 stress rating and a US 30 year rot & decay warranty it is an excellent choice

for framing and building on any exterior project where durability and strength are required.

38mm x 90mm Dense select structural Grade Southern yellow pine is a big seller to the composite deck sector.

Also available in a Clear grade on request.

For some excellent reasons to use 38x90mm DSS Southern yellow pine timber to construct a timber or composite deck frame look no further than the link here to Wood It’s real where you will find plenty of good advice.

For further advice on all aspects of deck building and care please follow the link to our blog page where there is lots of helpful tips and advice .

It’s important to remember that although you may pay a little more for Treated SYP in the short term with its incredible durability and strength it not only lasts a lot longer making it a wise investment for use in landscape projects but with its C24 stress rating you also need less of it as wider joist spans are required often. Also because the treatment goes all the way through the timber penetrating deep into the heart of the wood you don’t need to worry about end grain treatment this saving time and money.

Additional information

board length



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