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True Timber Thickness
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  1. Products
  2. CLS & Joinery

CLS & Joinery

CLS and joinery timber are planed Softwoods used for framing, stud walls, and interior carpentry. Smooth and easy to work with, they are ideal for construction and finishing projects.

Sort By Sort By: Featured
Featured Newest Arrivals Name (A-Z) Price - Low to High Price - High to Low
[188] 50x75mm 2.4m CLS C16/C24 Graded Untreated KD Softwood 50x75mm CLS C16/C24 Graded Untreated KD Softwood

50x75mm 2.4m CLS C16/C24 Graded Untreated KD Softwood

£ 3.80
[189] 50x75mm 3m CLS C16/C24 Graded Untreated KD Softwood 50x75mm CLS C16/C24 Graded Untreated KD Softwood

50x75mm 3m CLS C16/C24 Graded Untreated KD Softwood

£ 4.75
[190] 50x100mm 2.4m CLS C16/C24 Graded Untreated KD Softwood 50x100mm CLS C16/C24 Graded Untreated KD Softwood Hot!

50x100mm 2.4m CLS C16/C24 Graded Untreated KD Softwood

£ 6.30
[191] 50x100mm 3m CLS C16/C24 Graded Untreated KD Softwood 50x100mm CLS C16/C24 Graded Untreated KD Softwood

50x100mm 3m CLS C16/C24 Graded Untreated KD Softwood

£ 7.87
[192] 32x115mm Whitewood Door Lining Set and Stops for 686/762mm Doors

32x115mm Whitewood Door Lining Set and Stops for 686/762mm Doors

£ 39.95
[193] 32x115mm Whitewood Door Lining Set and Stops for 762/838mm Doors

32x115mm Whitewood Door Lining Set and Stops for 762/838mm Doors

£ 42.95
[194] 32x138mm Whitewood Door Lining Set and Stops for 686/732mm Doors

32x138mm Whitewood Door Lining Set and Stops for 686/732mm Doors

£ 44.95
[195] 32x138mm Whitewood Door Lining Set and Stops for 762/838mm Doors

32x138mm Whitewood Door Lining Set and Stops for 762/838mm Doors

£ 47.95
[196] 16x38mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

16x38mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 1.25
[197] 16x50mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

16x50mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 1.55
[198] 19x38mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

19x38mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 1.45
[199] 19x50mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

19x50mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 1.75
[200] 19x100mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

19x100mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 3.25
[201] 25x38mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

25x38mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 1.85
[202] 25x50mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

25x50mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 2.25
[203] 25x75mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

25x75mm Planed All Round (PAR) Untreated 5th+ Grade KD Softwood (Per linear metre)

£ 3.15
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About CLS & Joinery

CLS and joinery timber is widely used across the construction and home improvement industry due to its strength, versatility, and smooth finish. Commonly manufactured from high-quality softwood, CLS timber is kiln dried and planed with rounded edges, making it ideal for interior framing, partition walls, studwork, and general structural applications. Joinery timber is also frequently used for woodworking projects where a cleaner appearance and precise dimensions are important.

Popular uses for CLS and joinery timber include internal wall frames, boxing in pipework, roofing structures, shelving, furniture construction, and DIY carpentry. Many products are available in treated and untreated options, depending on whether the timber will be used indoors or exposed to external conditions. Strength-graded timber options such as C16 and C24 are commonly chosen for reliable structural performance.

Available in a wide range of lengths and dimensions, CLS and joinery timber offers a cost-effective solution for both professional tradespeople and home DIY projects. Whether you're building stud walls, completing renovation work, or creating custom joinery features, CLS timber provides dependable performance, easy handling, and consistent quality.

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