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CLS Timber & Scant

CLS and Scant are specific types of timber that are used for internal work such as building non load-bearing partition walls.

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  • CLS Timber PEFC 50 x 75mm CLS Timber PEFC 50 x 75mm

    CLS Timber PEFC 50 x 75mm

    £4.28 - £8.56 per piece (Ex VAT)
    £5.14 - £10.27 per piece (Inc VAT)
    Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most used in construction. CLS has PAR rounded four corners for ease of handling. It has been kiln dried enabling protection against decay and making the...
  • CLS Timber PEFC 50 x 100mm CLS Timber PEFC 50 x 100mm

    CLS Timber PEFC 50 x 100mm

    £5.84 - £11.68 per piece (Ex VAT)
    £7.01 - £14.02 per piece (Inc VAT)
    Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most used in construction. CLS has PAR rounded four corners for ease of handling. It has been kiln dried enabling protection against decay and making the...
  • Scant Timber S4S PEFC 42 x 69mm Scant Timber S4S PEFC 42 x 69mm

    Scant Timber S4S PEFC 42 x 69mm

    £4.68 - £8.19 per piece (Ex VAT)
    £5.62 - £9.83 per piece (Inc VAT)
    Scant is a structural timber available in a variety of sections and lengths most used in construction, mainly used for internal construction timbers within the building envelope, tiling batten, framing and roof timbers, internal joists, sole pates.
  • CLS Timber FSC 50 x 75mm CLS Timber FSC 50 x 75mm

    CLS Timber FSC 50 x 75mm

    £4.28 - £8.56 per piece (Ex VAT)
    £5.14 - £10.27 per piece (Inc VAT)
    Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most used in construction. CLS has PAR rounded four corners for ease of handling. It has been kiln dried enabling protection against decay and making the...
  • CLS Timber FSC 38 x 89mm CLS Timber FSC 38 x 89mm

    CLS Timber FSC 38 x 89mm

    £5.84 - £11.68 per piece (Ex VAT)
    £7.01 - £14.02 per piece (Inc VAT)
    Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most used in construction. CLS has PAR rounded four corners for ease of handling. It has been kiln dried enabling protection against decay and making the...
  • CLS Timber UC2 Treated PEFC 38 x 89mm CLS Timber UC2 Treated PEFC 38 x 89mm

    CLS Timber UC2 Treated PEFC 38 x 89mm

    CLS stands for "Canadian Lumber Size". It is for internaluse,mainly for timber frames and partitian walls.Itis finished on all sidesgiving ita smaller cross-section than traditional sawn timber. With a long and proud tradition of supplying quality...
  • CLS Timber UC2u Treated PEFC 38 x 63 x 3000mm CLS Timber UC2u Treated PEFC 38 x 63 x 3000mm

    CLS Timber UC2u Treated PEFC 38 x 63 x 3000mm

    Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most commonly used in construction. CLS has PAR rounded four corners for ease of handling. It has been kiln dried enabling protection against decay and...
  • CLS Timber PEFC 38 x 140 x 4800mm CLS Timber PEFC 38 x 140 x 4800mm

    CLS Timber PEFC 38 x 140 x 4800mm

    Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most commonly used in construction. CLS has PAR rounded four corners for ease of handling. It has been kiln dried enabling protection against decay and...
  • CLS Timber 38 x 140 x 2400mm CLS Timber 38 x 140 x 2400mm

    CLS Timber 38 x 140 x 2400mm

    Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most commonly used in construction. CLS has PAR rounded four corners for ease of handling. It has been kiln dried enabling protection against decay and...
  • Scant Timber S4S FSC 42 x 69mm Scant Timber S4S FSC 42 x 69mm

    Scant Timber S4S FSC 42 x 69mm

    £4.68 - £9.36 per piece (Ex VAT)
    £5.62 - £11.23 per piece (Inc VAT)
    Scant is a structural timber available in a variety of sections and lengths most used in construction, mainly used for internal construction timbers within the building envelope, tiling batten, framing and roof timbers, internal joists, sole pates.

CLS Timber & Scant

What is scant timber?

Scant timber is a specific type of timber, which is occasionally used as rafter material known as ‘framing.’

What is CLS timber?

CLS timber is mainly used for timber frame home construction, and for internal and partition walls. It is typically a timber finished on all sides giving a smaller cross-section than traditional sawn timber.

What does Scant Timber mean?

Both Scant and CLS Timber are abbreviated trade references to specific types of timber, which have a specific main use, in the form of building non load-bearing partition walls. They are occasionally used as rafter material which is known as “framing”. Once constructed the frame panels are faced, by the joiner, with plasterboards. They may also be used as Cavity Filler with Knauf Dritherm insulation or Acoustic Insulation, which is readily available from our network of branches.

Howarth Timber & Building Supplies only stock kiln-dried “Scant” and CLS to ensure the timber stays as straight as possible.

Scant is traditionally more widely used in the Manchester and Lancashire regions. All four sides of the section are surfaced, with the finishing size being 42 x 699m. The corners of the section are squared, rather than rounded, with lengths of 2.4, 3.0 and 4.8m being available in most Howarth branches. However, some branches may carry lengths of 3.6m.

The best-quality timbers (normally Whitewood, or Picea Abies) are imported from Sweden, Denmark, and Germany. However, it could also be important from the Baltic regions and Canada. It is most commonly available as C16 grade; when used with non loading-bearing walls – such as stud partition walls – the grading gives you a greater level of consistent quality, rather than being a necessity. We may also carry an ungraded stock which is perfectly fine for use in non load-bearing applications.

What is CLS Timber used for?

CLS Timber (derived from Canadian Lumber Size), though used for the same application as a Scant, has a smaller radius on each of the four corners, making it both thinner and narrower. The finished size of a 50 x 75mm piece of CLS timber is 38 x 63mm. The most commonly available stock lengths of CLS timber are 2.4m and 4.8m with some branches carrying the additional 3.0m length. As with the Scant, the best-quality of CLS timber is important from Sweden, Denmark, and Germany, as well as the Baltic regions and Canada.

Frequently Asked Questions

Can I use CLS timber outside?
CLS timber should only be used outside if it has been treated, to ensure it is suitably resistant to external climate conditions that can cause issues such as rot and decay.

How to guides

A Guide to CLS timber

An article featuring everything you need to know about CLS timber in one place, from its benefits to the projects it can be used for!