Timber & Sheets
Treated Carcassing Timber for sites in County Londonderry
Carcassing timber is strength-graded, sawn softwood used for the structural frame of a building, such as floor joists, rafters, ceiling joists and stud walls.
Across County Londonderry, from Derry/Londonderry to Magherafelt, we supply carcassing timber delivered to site with the price and date confirmed in writing.

County Londonderry at a glance
- Covering
- 4 towns across County Londonderry
- Postcode areas
- BT
- Delivery
- Quoted individually (Northern Ireland)
- How it arrives
- Banded packs, long-length access
- Neighbouring areas
- County Tyrone, County Antrim, County Armagh
Treated Carcassing Timber we supply in County Londonderry
- Fencing and sleeper timberTreated posts, rails and sleepers on request.
- C24 graded carcassingStronger grade for longer spans or smaller sections.
- C16 graded carcassingThe everyday structural grade for joists, rafters and studs.
- Longer lengthsLengths beyond the common range to order.
- Wall plate and nogginsSmaller sections for plates, noggins and bracing.
Treated Carcassing Timber delivered in County Londonderry towns
- Treated Carcassing Timber in Derry/Londonderry
- Treated Carcassing Timber in Coleraine
- Treated Carcassing Timber in Limavady
- Treated Carcassing Timber in Magherafelt
Working out quantities for your County Londonderry job
A floor 3.6 m wide with joists spanning 3.6 m at 400 mm centres needs 10 joists, plus trimmers and noggins. The section and grade, such as 47 × 200 mm C24, come from span tables or your engineer; send us the timber schedule and we will price it.
How delivery works in County Londonderry
Timber is delivered in packs or bundles on a flatbed; long lengths need clear access along the drop point. Deliveries to Northern Ireland include a sea crossing, so we quote each order individually.
- Keep cement, plaster and boards dry: have a tarpaulin or a garage space ready before they arrive.
- On busy streets in County Londonderry, a parking suspension or a quiet time slot can make offloading safer, so tell us about local restrictions you know of.
- For a phased build we can split the order so materials arrive as each stage starts, which keeps the site clear.
Treated Carcassing Timber: choosing well
Which treatment?
Treatment is specified by use class. Timber inside a building is usually use class 1 or 2; external timber out of ground contact is use class 3; timber in ground contact needs use class 4.
C16 or C24?
C24 is stronger and stiffer, so it can span further or use a smaller section. Span tables and your structural drawings decide which grade and size you need.
In Northern Ireland building work follows the Building Regulations (Northern Ireland), with guidance in the Technical Booklets, and applications go to the council's building control team.
Treated Carcassing Timber questions
Is your carcassing timber treated?
We supply treated carcassing as standard for structural work. Tell us if the timber is for external or ground-contact use so we supply the right treatment level.
Is there a minimum order for delivery to County Londonderry?
There is no fixed minimum. For very small orders we will tell you honestly if the delivery cost outweighs the materials, so you can decide.
Can you cut timber to length?
Ask when you request a price; we will tell you what cutting is possible for your order.
Can you deliver carcassing timber to a site with restricted access in County Londonderry?
Usually, yes. Tell us about the access when you ask for a price and we will plan the vehicle and offload, or say if a smaller vehicle is needed.
Treated Carcassing Timber in neighbouring areas
- Treated Carcassing Timber in County Tyrone
- Treated Carcassing Timber in County Antrim
- Treated Carcassing Timber in County Armagh
- Treated Carcassing Timber in County Fermanagh
- Treated Carcassing Timber in County Down
More materials delivered across County Londonderry
- Adhesives, Sealants & Foam in County Londonderry
- Metal Stud & Ceiling Systems in County Londonderry
- Screws & Nails in County Londonderry
- Building & Sharp Sand in County Londonderry
- Underground Drainage in County Londonderry
- Roofing Materials in County Londonderry
- PIR Insulation Boards in County Londonderry
- Steel & Concrete Lintels in County Londonderry
Send your list, get a delivered price
Tell us what you need and where it is going. We check the quantities and come back with a delivered price before you commit.
