The Benefit Of Using Our Timber Decking Joists
Building the base you need under your timber decking boards wouldn’t be possible without using our FSC® Certified timber joists. Used in conjunction with our timber posts, you will be able to create a structurally stable base that lasts. Graded C24 in strength class, our timber decking joists are sawn and green treated with Tanalith ‘E’ preservative to ensure long-lasting protection from the elements.
The C24 in Cladco timber joists refers to the type of timber used. C24 timber is 50% stronger than C16 timber and has significantly less knots in the wood. This allows the timber to bear more weight than a C16 timber joist so can be used for longer spans or increased loads. The dense fibres within the wood increase strength and durability as well as being green treated (tanalised) and FSC® Certified.
Joist specifications
Length: 4.2m and 4.8m
Width: 100mm
Depth: 47mm
Weight (4.2m): 9.96kg approx.
Weight (4.8m): 11.38kg approx.
Our timber joists are responsibly sourced and are great for creating a supporting frame on top of a concrete base. Our 47mm x 100mm timber joists are available in both 4.2m and 4.8m in length and can be sawn, planed or drilled however you want to fit your decking project.
When used efficiently, timber decking joists completely support the base of your decking boards. We highly recommend using on top of a concrete base as this will ensure the flattest possible surface to work with. Used alongside our timber posts will ensure as solid a structure to start from, meaning many years of usage without issue.
Using our installation guides will help to show the best practices we recommend. We also have a number of trims and fixings we recommend for use when putting together your timber decking.
Looking for an alternative timber joist?
See our C24 sawn green treated timber decking joist 47mm x 150mm
Looking for a timber decking board?
See our 4.8m timber decking board
Or browse our timber decking department for decking boards and more…
