Check local branch stock
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Special OfferSpecial Offer
C16 Timber Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 100mm (4x2)
£2.36 - £13.59 per piece (Ex VAT)£2.83 - £16.31 per piece (Inc VAT)This C16 deck joists make the perfect companion for your decking area, as they support the decking planks in place. Featuring UC4 treatment, means that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground. C16... -
Special OfferSpecial Offer
C16 Timber Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 150mm (6x2)
£3.13 - £17.97 per piece (Ex VAT)£3.76 - £21.56 per piece (Inc VAT)C16 deck joists are perfect for supporting your decking area, as they sit under your decking planks. This brown timber carcassing is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the... -
Special OfferSpecial Offer
C24 Timber Joists UC4 Treated Green PEFC 45 x 145mm (6x2)
£4.50 - £25.88 per piece (Ex VAT)£5.40 - £31.06 per piece (Inc VAT)Our C24 timber joists are ideal for supporting your decked area. This timber is treated with UC4 preservative, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground. C24 graded timber is produced... -
Special OfferSpecial Offer
C24 Timber Joists UC4 Treated Green PEFC 45 x 95mm (4x2)
£3.00 - £17.25 per piece (Ex VAT)£3.60 - £20.70 per piece (Inc VAT)Our C24 timber joists are a perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground. C24 graded timber is produced from slower... -
Special OfferSpecial Offer
C16 Timber Joists UC4 Treated Green Incised Kiln Dried Regularised FSC 47 x 150mm (6x2)
£3.00 - £17.25 per piece (Ex VAT)£3.60 - £20.70 per piece (Inc VAT)C16 deck joists are perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground. C16 graded timber is home grown conifer timber such as...
Rough Sawn Timber
What is Structural Carcassing Timber?
Often referred to as carcassing timber, this type of wood is most commonly used in structural applications that involve the timber being used in an area that won’t be seen, and typically comes in three gradings:
- C16 Timber
- C24 Timber
- Part Graded Timber
Do I need Treated Structural Timber?
If the timber is going to be placed in an area where attacks from external problems such as moisture or fungal attacks, are likely to cause major problems, then we strongly recommend purchasing treated structural timber.
For all the following applications, we generally recommend using a treated structural timber:
- Roof Rafters
- Timber Framing
- Ceiling Joists
- Floor Joists
- Deck Joists
I need a Sawn Finish Structural Timber
Sawn Carcassing Timber has largely been replaced in UK stockists with “eased edge” stock being introduced in the UK in 2004.
Eased Edged means that the timber is semi-surfaced and finished to a uniform finish that is relatively smooth. Four corners are radiused to reduce the likelihood of splinters.
Most of our branches do hold stock of sawn boards that are either treated or untreated. However, if you require a sawn unsurfaced finish, please contact your nearest branch, who will be able to source this as a special item to meet your requirements. Most sizes can be obtained within 5 to 10 working days.
Confused about C16 and C24 structural timber and which grade you will need? Your nearest branch will be more than happy to help.