null

Rough Sawn Timber

Rough Sawn Timber is also referred to as carcassing timber.  It is used to create floor joists and timber framing in structural applications. Usually rough sawn timber comes in 3 different types of grading: C16 timber, C24 Timber and part graded timber.

Filters

Check local branch stock

  • Rough Sawn Timber UC2 Treated FSC 19 x 38mm Rough Sawn Timber UC2 Treated FSC 19 x 38mm

    Rough Sawn Timber UC2 Treated FSC 19 x 38mm

    £0.64 - £3.71 per piece (Ex VAT)
    £0.77 - £4.45 per piece (Inc VAT)
    The sawn treated carcassing has a rough sawn finish, which is pressure treated to prolong timbers lifespan and protect rot or insect attack. This non-structural softwood is ideal for construction projects. It is not suitable for use in direct ground...
  • Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22 x 100mm Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22 x 100mm

    Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22 x 100mm

    £1.75 - £10.06 per piece (Ex VAT)
    £2.10 - £12.07 per piece (Inc VAT)
    Treated timber is suitable to be used externally and is suitable for wet areas, however UC3u treated timber shouldn't be used for in-ground or water contact. Examples of UC3u treated timber uses are outdoor decking, shed bases, posts, sleepers...
  • Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22 x 150mm

    Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22 x 150mm

    £2.62 - £15.09 per piece (Ex VAT)
    £3.14 - £18.11 per piece (Inc VAT)
    Manufactured from FSC certified sawn timber, so you have complete peace of mind that the timber is procured from sustainable sources. These fencing boards are UC3u treated timber, meaning they perfect for outdoor use providing it is above ground...
  • Rough Sawn Timber UC2 Treated Type A FSC 25 x 50mm Rough Sawn Timber UC2 Treated Type A FSC 25 x 50mm

    Rough Sawn Timber UC2 Treated Type A FSC 25 x 50mm

    £1.12 - £6.42 per piece (Ex VAT)
    £1.34 - £7.70 per piece (Inc VAT)
    This UC2 treated carcassing has a rough sawn finish, which is pressure treated to prolong timbers lifespan and protect rot or insect attack. This non- structural softwood is ideal for construction projects. This product has FSC certification and full...
  • Rough Sawn Timber UC2 Treated PEFC 19 x 38mm Rough Sawn Timber UC2 Treated PEFC 19 x 38mm

    Rough Sawn Timber UC2 Treated PEFC 19 x 38mm

    £0.64 - £3.71 per piece (Ex VAT)
    £0.77 - £4.45 per piece (Inc VAT)
    This timber is sourced and produced in the British Isles, reducing the carbon footprint of timber products compared to imported products. The sawn treated carcassing has a rough sawn finish, which is pressure treated to prolong timbers lifespan and...
  • C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 95 x 4800mm C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 95 x 4800mm

    C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 95 x 4800mm

    £3.95 - £22.70 per piece (Ex VAT)
    £4.74 - £27.24 per piece (Inc VAT)
    Our planed & regularised treated sawn timber is perfect for structural timber carcassing as it comes in C24 grade. This timber is ideal for a number of uses in the home and garden. The pressure treatment on this timber protects it against wood...
  • C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 95 x 4800mm C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 95 x 4800mm

    C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 95 x 4800mm

    £3.84 - £22.08 per piece (Ex VAT)
    £4.61 - £26.50 per piece (Inc VAT)
    Treated C24 is a structural timber that's commonly used for stud walls, roof and floor joists, and structural joinery. The use of C24 grade timber, which has a smaller cross section, allows for higher loads, and longer spans. C24 grade has fewer...
  • Rough Sawn Timber UC3u Treated Kiln Dried Regularised FSC 44 x 44mm Rough Sawn Timber UC3u Treated Kiln Dried Regularised FSC 44 x 44mm

    Rough Sawn Timber UC3u Treated Kiln Dried Regularised FSC 44 x 44mm

    £2.00 - £11.48 per piece (Ex VAT)
    £2.40 - £13.78 per piece (Inc VAT)
    Treated timber is suitable to be used externally and is suitable for wet areas or areas where the timber will be coming into contact with the ground. Examples of treated timber uses are outdoor decking, shed bases, posts, sleepers. Carcassing is a...
  • C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 145mm C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 145mm

    C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 145mm

    £5.92 - £34.05 per piece (Ex VAT)
    £7.10 - £40.86 per piece (Inc VAT)
    Treated- Treated timber is suitable to be used externally and is suitable for wet areas or areas where the timber will be coming into contact with the ground. Examples of treated timber uses are outdoor decking, shed bases, posts, sleepers. C16 or C24...
  • Rough Sawn Timber Kiln Dried Regularised PEFC 47 x 50mm Rough Sawn Timber Kiln Dried Regularised PEFC 47 x 50mm

    Rough Sawn Timber Kiln Dried Regularised PEFC 47 x 50mm

    £1.80 - £10.35 per piece (Ex VAT)
    £2.16 - £12.42 per piece (Inc VAT)
    Carcassing is a generic trade term term meaning the timber is used to form floors, walls, ceilings and roofs of properties. All our timber has full chain of custody, meaning our timber is sourced responsibly. This timber is kiln dried to minimise...
  • C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 47 x 75mm C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 47 x 75mm

    C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 47 x 75mm

    £2.96 - £17.03 per piece (Ex VAT)
    £3.55 - £20.44 per piece (Inc VAT)
    Treated timber is suitable to be used externally and is suitable for wet areas or areas where the timber will be coming into contact with the ground. Examples of treated timber uses are outdoor decking, shed bases, posts, sleepers. Regularised timber has...
  • Rough Sawn Timber UC2 Treated Tile Batten PEFC 25 x 50mm Rough Sawn Timber UC2 Treated Tile Batten PEFC 25 x 50mm

    Rough Sawn Timber UC2 Treated Tile Batten PEFC 25 x 50mm

    £1.25 - £7.17 per piece (Ex VAT)
    £1.50 - £8.60 per piece (Inc VAT)
    This UC2 rough sawn timber is sourced and produced in the British Isles, reducing the carbon footprint of timber products compared to imported products. The sawn treated carcassing has a rough sawn finish, which is pressure treated to prolong timbers...
  • C24 Timber Joists Kiln Dried Regularised PEFC 44 x 95mm C24 Timber Joists Kiln Dried Regularised PEFC 44 x 95mm

    C24 Timber Joists Kiln Dried Regularised PEFC 44 x 95mm

    £3.53 - £20.31 per piece (Ex VAT)
    £4.24 - £24.37 per piece (Inc VAT)
    C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,...
  • Rough Sawn Timber UC3u Green Treated Unseasoned FSC 22 x 75mm Rough Sawn Timber UC3u Green Treated Unseasoned FSC 22 x 75mm

    Rough Sawn Timber UC3u Green Treated Unseasoned FSC 22 x 75mm

    £1.31 - £7.54 per piece (Ex VAT)
    £1.57 - £9.05 per piece (Inc VAT)
    Carcassing is a standard term term that means the timber is used to form floors, walls, ceilings and roofs of properties. Unseasoned timber means timber than has not yet dried to a moisture content matched to its intended environment, which means it can...
  • Rough Sawn Timber UC2 Treated Type A FSC 25 x 38mm Rough Sawn Timber UC2 Treated Type A FSC 25 x 38mm

    Rough Sawn Timber UC2 Treated Type A FSC 25 x 38mm

    £0.85 - £4.88 per piece (Ex VAT)
    £1.02 - £5.86 per piece (Inc VAT)
    The sawn treated carcassing has a rough sawn finish, which is pressure treated to prolong timbers lifespan and protect rot or insect attack. This non-structural softwood that is ideal for internal framing or studwork.
  • C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 70mm C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 70mm

    C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 70mm

    £2.88 - £16.56 per piece (Ex VAT)
    £3.46 - £19.87 per piece (Inc VAT)
    Treated C24 is a structural timber that's commonly used for stud walls, roof and floor joists, and structural joinery. The use of C24 grade timber, which has a smaller cross section, allows for higher loads, and longer spans. C24 grade has fewer...
  • C16 Timber Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 100mm

    C16 Timber Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 100mm

    £3.99 - £22.94 per piece (Ex VAT)
    £4.79 - £27.53 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...
  • C24 Timber Joists Kiln Dried Regularised PEFC 44 x 145mm C24 Timber Joists Kiln Dried Regularised PEFC 44 x 145mm

    C24 Timber Joists Kiln Dried Regularised PEFC 44 x 145mm

    £5.30 - £30.46 per piece (Ex VAT)
    £6.36 - £36.55 per piece (Inc VAT)
    C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,...
  • Rough Sawn Timber UC2 Treated Kiln Dried Regularised PEFC 44 x 44mm Rough Sawn Timber UC2 Treated Kiln Dried Regularised PEFC 44 x 44mm

    Rough Sawn Timber UC2 Treated Kiln Dried Regularised PEFC 44 x 44mm

    £1.95 - £11.23 per piece (Ex VAT)
    £2.34 - £13.48 per piece (Inc VAT)
    Treated graded carcassing is a structural timber that's commonly used for stud walls, roof and floor joists, and structural joinery. It is machined to have rounded edges, smooth faces and sides, for a more uniformed piece of timber. It is kiln dried to...
  • C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 44 x 95 x 3600mm C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 44 x 95 x 3600mm

    C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 44 x 95 x 3600mm

    £3.84 - £22.08 per piece (Ex VAT)
    £4.61 - £26.50 per piece (Inc VAT)
    Treated C24 is a structural timber that's commonly used for stud walls, roof and floor joists, and structural joinery. The use of C24 grade timber, which has a smaller cross section, allows for higher loads, and longer spans. C24 grade has fewer...
  • Rough Sawn Timber Unseasoned FSC 22 x 100mm Rough Sawn Timber Unseasoned FSC 22 x 100mm

    Rough Sawn Timber Unseasoned FSC 22 x 100mm

    £1.42 - £8.16 per piece (Ex VAT)
    £1.70 - £9.79 per piece (Inc VAT)
    Carcassing is a generic trade term term meaning the timber is used to form floors, walls, ceilings and roofs of properties. All our timber has full chain of custody, meaning our timber is sourced responsibly. This timber is kiln dried to minimise...
  • C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 120mm C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 120mm

    C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 120mm

    £4.80 - £27.60 per piece (Ex VAT)
    £5.76 - £33.12 per piece (Inc VAT)
    Treated C24 is a structural timber that's commonly used for stud walls, roof and floor joists, and structural joinery. The use of C24 grade timber, which has a smaller cross section, allows for higher loads, and longer spans. C24 grade has fewer...
  • C24 Timber Joists Kiln Dried Regularised PEFC 44 x 70mm C24 Timber Joists Kiln Dried Regularised PEFC 44 x 70mm

    C24 Timber Joists Kiln Dried Regularised PEFC 44 x 70mm

    £2.65 - £15.23 per piece (Ex VAT)
    £3.18 - £18.28 per piece (Inc VAT)
    C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,...
  • Rough Sawn Timber Unseasoned FSC 22 x 150mm Rough Sawn Timber Unseasoned FSC 22 x 150mm

    Rough Sawn Timber Unseasoned FSC 22 x 150mm

    £2.13 - £12.24 per piece (Ex VAT)
    £2.56 - £14.69 per piece (Inc VAT)
    Carcassing is a standard term term that means the timber is used to form floors, walls, ceilings and roofs of properties. Unseasoned timber means timber than has not yet dried to a moisture content matched to its intended environment, which means it can...

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.

Frequently Asked Questions

What is the difference between each type ie C16, C24 and part graded timber?
All graded timbers are slow-grown and kiln-dried so that there is no more than 20% of moisture in the wood. This is in keeping with relevant building regulations, as the kiln-drying process creates a timber that is incredibly strong, guaranteeing stability.
What is C16 Timber?
C16 graded structural timber is the most cost-effective option and meets performance requirements. Kiln dried C16 is generally recommended for most applications if the correct spans are used and is mainly used internally for floor and roof joists. Lengths commonly available are 3.0, 3.6, 4.2 and 4.8 meter.
What is C24 Timber?
C24 graded premium structural timber offers greater strength than C16 timber, making it a more demanding grade that can handle higher loads and wider spans. It is the better-quality structural option because it can take up to 50% longer for these timbers to grow, meaning that they have more growth rings. The more growth rings a piece of wood has, the higher its overall density, which in turn means that it has greater natural durability and improved stability. The tighter the growth rings of the wood, the better-quality piece of wood that you are dealing with.