Howarth Timber & Building Supplies

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News & Information (4)

C16 vs C24

There are a multitude of different timbers available, but if two of the most popular grades of timber went head-to-head, it would have to be a straight fight of the heavyweights – C16 vs C24 ti ...

How to Build a Garden Shed

Building your own garden structure is easier than you may think and so rewarding. Deciding where you would like you garden structure to be located is a big decision. To make the most of your structu ...

Treated Timber Use Classes Explained

Not all timber is created equally. When you're working on outdoor projects, choosing the right type of treated wood is vital. Different jobs need different treatments to protect the timber from weath ...

Types of Timber: All you need to know

If you’re in the building trade, a joiner in particular, or work at Howarth Timber & Building Supplies, you’ll know a great deal about the different types of timber. But there is alwa ...

Products (156)

Green Paling Fence Board Treated Rough Sawn Timber UC3u Unseasoned FSC 22 x 150mm (6x1)

WAS: per metre

WAS

£2.75 per metre (Inc VAT)

WAS: per metre

WAS

£2.29 per metre (Ex VAT)

Discover the unparalleled versatility and sustainability of our Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22 x 150mm fencing boards. Crafted from FSC certified timber, with full chain of...

WAS: per metre

WAS

£2.75 per metre (Inc VAT)

WAS: per metre

WAS

£2.29 per metre (Ex VAT)
Tile Roofing Batten Full Graded Rough Sawn Timber Treated UC2 FSC 25 x 50mm (2x1)

WAS: per metre

WAS

£1.37 per metre (Inc VAT)

WAS: per metre

WAS

£1.14 per metre (Ex VAT)

A premium batten, fully graded to meet all aspects of BS5534:2003+A1:2010, eliminating the need for grading on site. Approved for New Builds & Replacement Roof projects. These roof battens or...

WAS: per metre

WAS

£1.37 per metre (Inc VAT)

WAS: per metre

WAS

£1.14 per metre (Ex VAT)
C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 47 x 100mm (4x2)

WAS: per metre

WAS

£4.16 per metre (Inc VAT)

WAS: per metre

WAS

£3.47 per metre (Ex VAT)

Discover the incredible strength and versatility of our C16 Timber Joists. These structural wood pieces are kiln dried and expertly pressure treated, making them resistant to wood-destroying fungi...

WAS: per metre

WAS

£4.16 per metre (Inc VAT)

WAS: per metre

WAS

£3.47 per metre (Ex VAT)
Type-A Tile Roofing Batten Rough Sawn Timber Treated UC2 FSC 25 x 50mm (2x1)

WAS: per metre

WAS

£1.20 per metre (Inc VAT)

WAS: per metre

WAS

£1.00 per metre (Ex VAT)

This treated timber roof batten is a reliable, cost effective solution ideal for repairs, refurbishments, and replacing existing roofs, by creating fixing point for tiles on pitched roofs. Although...

WAS: per metre

WAS

£1.20 per metre (Inc VAT)

WAS: per metre

WAS

£1.00 per metre (Ex VAT)
CLS Timber PEFC 50 x 75 x 2400mm (Finished Size 38x63mm) 3x2

WAS: per piece

WAS

£5.83 per piece (Inc VAT)

WAS: per piece

WAS

£4.86 per piece (Ex VAT)

Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most commonly used in construction. CLS is PAR or Planed All Round, meaning it has gone through a...

WAS: per piece

WAS

£5.83 per piece (Inc VAT)

WAS: per piece

WAS

£4.86 per piece (Ex VAT)
C16 Timber UC3u Treated Kiln Dried Regularised FSC 47 x 75mm (3x2)

WAS: per metre

WAS

£3.12 per metre (Inc VAT)

WAS: per metre

WAS

£2.60 per metre (Ex VAT)

Due to the size of this 3x2 C16 graded timber carcassing, we recommended using it purely for vertical non-load bearing stud positions. C16 Timber Joists, expertly crafted for those who seek...

WAS: per metre

WAS

£3.12 per metre (Inc VAT)

WAS: per metre

WAS

£2.60 per metre (Ex VAT)
Special Offer

Special Offer

C24 Timber Decking Joists UC4 Treated Kiln Dried Regularised Redwood 47 x 100 x 3600mm (4x2)

WAS: each

WAS £18.73

£12.24 each (Inc VAT)

WAS: each

WAS £15.61

£10.20 each (Ex VAT)

Crafted for durability and strength, our C24 Timber Joists UC4 Treated Redwood 47x100x3600mm are the ideal choice for your outdoor decking projects. These joists are UC4 treated, ensuring they are...

WAS: each

WAS £18.73

£12.24 each (Inc VAT)

WAS: each

WAS £15.61

£10.20 each (Ex VAT)
Tile Roofing Batten Full Graded Rough Sawn Timber Treated UC2 PEFC 25 x 50mm (2x1)

WAS: per metre

WAS

£1.37 per metre (Inc VAT)

WAS: per metre

WAS

£1.14 per metre (Ex VAT)

A premium batten, fully graded to meet all aspects of BS5534:2003+A1:2010, eliminating the need for grading on site. Approved for New Builds & Replacement Roof projects. These roof battens or...

WAS: per metre

WAS

£1.37 per metre (Inc VAT)

WAS: per metre

WAS

£1.14 per metre (Ex VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 100mm (4x2)

WAS:

WAS:

WAS

£4.18 - £24.01 per piece (Ex VAT)

WAS

£5.02 - £28.81 per piece (Inc VAT)

C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC timber is your go-to choice for robust structural applications. C16 and C24 are strength grades; the higher the grade, the better the load...

WAS:

WAS:

WAS

£4.18 - £24.01 per piece (Ex VAT)

WAS

£5.02 - £28.81 per piece (Inc VAT)
Green Paling Fence Board Treated Timber UC3u Unseasoned FSC 22 x 75mm (3x1)

WAS: per piece

WAS

£1.39 per piece (Inc VAT)

WAS: per piece

WAS

£1.16 per piece (Ex VAT)

UC3u Treatment Class Crafted from UC3u treated timber, these provide robust protection against rot and decay. Ideally suited for above-ground outdoor applications such as constructing pergolas and...

WAS: per piece

WAS

£1.39 per piece (Inc VAT)

WAS: per piece

WAS

£1.16 per piece (Ex VAT)
C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 47 x 150mm (6x2)

WAS: per piece

WAS

£6.24 per piece (Inc VAT)

WAS: per piece

WAS

£5.20 per piece (Ex VAT)

Transform your outdoor spaces with our Timber Floor Joist, designed specifically for external use, making them perfect for decking joists. These robust timber joists are your go-to solution for...

WAS: per piece

WAS

£6.24 per piece (Inc VAT)

WAS: per piece

WAS

£5.20 per piece (Ex VAT)
Tile Roofing Batten Full Graded Rough Sawn Timber Treated UC2 FSC 25 x 38mm

WAS: per piece

WAS

£1.16 per piece (Inc VAT)

WAS: per piece

WAS

£0.97 per piece (Ex VAT)

A premium batten, fully graded to meet all aspects of BS5534:2003+A1:2010, eliminating the need for grading on site. Approved for New Builds & Replacement Roof projects. These roof battens or...

WAS: per piece

WAS

£1.16 per piece (Inc VAT)

WAS: per piece

WAS

£0.97 per piece (Ex VAT)
Sawn Timber Untreated Kiln Dried Regularised PEFC 47 x 50mm (2x2)

WAS:

WAS:

WAS

£1.97 - £11.31 per piece (Ex VAT)

WAS

£2.36 - £13.57 per piece (Inc VAT)

Ungraded timber means it is neither C16 nor C24 graded, it can only be used for non-load bearing applications. This makes it ideal for general-purpose uses such as shelving, boxing-in, panelling,...

WAS:

WAS:

WAS

£1.97 - £11.31 per piece (Ex VAT)

WAS

£2.36 - £13.57 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 75mm (3x2)

WAS:

WAS:

WAS

£2.90 - £16.68 per piece (Ex VAT)

WAS

£3.48 - £20.02 per piece (Inc VAT)

C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as...

WAS:

WAS:

WAS

£2.90 - £16.68 per piece (Ex VAT)

WAS

£3.48 - £20.02 per piece (Inc VAT)
Special Offer

Special Offer

C16 Timber Decking Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 100mm (4x2)

WAS: per piece

WAS £4.34

£2.70 per piece (Inc VAT)

WAS: per piece

WAS £3.62

£2.25 per piece (Ex VAT)

These UC4 Treated Brown Incised Kiln Dried Regularised joists are the backbone of a durable and sustainable deck, offering exceptional support for your decking planks. Crafted from premium load...

WAS: per piece

WAS £4.34

£2.70 per piece (Inc VAT)

WAS: per piece

WAS £3.62

£2.25 per piece (Ex VAT)
C24 Timber UC2 Treated Kiln Dried Regularised PEFC 47 x 75mm (3x2)

WAS:

WAS:

WAS

£3.13 - £18.01 per piece (Ex VAT)

WAS

£3.76 - £21.61 per piece (Inc VAT)

Main usage is for vertical non-load bearing stud positions. Due to the size of this 3x2 C24 graded timber carcassing, we recommended using it purely for vertical non-load bearing stud positions. C16...

WAS:

WAS:

WAS

£3.13 - £18.01 per piece (Ex VAT)

WAS

£3.76 - £21.61 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 100mm (4x2)

WAS:

WAS:

WAS

£3.87 - £22.24 per piece (Ex VAT)

WAS

£4.64 - £26.69 per piece (Inc VAT)

C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as...

WAS:

WAS:

WAS

£3.87 - £22.24 per piece (Ex VAT)

WAS

£4.64 - £26.69 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 150mm (6x2)

WAS:

WAS:

WAS

£5.80 - £33.36 per piece (Ex VAT)

WAS

£6.96 - £40.03 per piece (Inc VAT)

C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as...

WAS:

WAS:

WAS

£5.80 - £33.36 per piece (Ex VAT)

WAS

£6.96 - £40.03 per piece (Inc VAT)
CLS Timber PEFC 50 x 75 x 3000mm (Finished Size 38x63mm) 3x2

WAS: per piece

WAS

£7.30 per piece (Inc VAT)

WAS: per piece

WAS

£6.08 per piece (Ex VAT)

Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most commonly used in construction. CLS is PAR or Planed All Round, meaning it has gone through a...

WAS: per piece

WAS

£7.30 per piece (Inc VAT)

WAS: per piece

WAS

£6.08 per piece (Ex VAT)
Type-A Tile Roofing Batten Rough Sawn Timber Treated UC2 FSC 25 x 38mm

WAS: per piece

WAS

£0.91 per piece (Inc VAT)

WAS: per piece

WAS

£0.76 per piece (Ex VAT)

This treated timber roof batten is a reliable, cost effective solution ideal for repairs, refurbishments, and replacing existing roofs, by creating fixing point for tiles on pitched roofs. Although...

WAS: per piece

WAS

£0.91 per piece (Inc VAT)

WAS: per piece

WAS

£0.76 per piece (Ex VAT)
Special Offer

Special Offer

C16 Timber Decking Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 150mm (6x2)

WAS: per piece

WAS £6.52

£4.03 per piece (Inc VAT)

WAS: per piece

WAS £5.43

£3.36 per piece (Ex 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,...

WAS: per piece

WAS £6.52

£4.03 per piece (Inc VAT)

WAS: per piece

WAS £5.43

£3.36 per piece (Ex VAT)
Rough Sawn Timber Untreated Unseasoned FSC 22 x 100mm (4x1)

WAS: per piece

WAS

£1.68 per piece (Inc VAT)

WAS: per piece

WAS

£1.40 per piece (Ex VAT)

Unseasoned Timber This means the timber has not yet dried to a moisture content matched to its intended environment, which means it can still be used for for purpose. However you need to be aware...

WAS: per piece

WAS

£1.68 per piece (Inc VAT)

WAS: per piece

WAS

£1.40 per piece (Ex VAT)
Sawn Timber UC2 Treated Kiln Dried Regularised PEFC 47 x 50mm (2x2)

WAS:

WAS:

WAS

£2.12 - £12.20 per piece (Ex VAT)

WAS

£2.54 - £14.64 per piece (Inc VAT)

Ungraded timber means it is neither C16 nor C24 graded, it can only be used for non-load bearing applications. This makes it ideal for general-purpose uses such as shelving, boxing-in, panelling,...

WAS:

WAS:

WAS

£2.12 - £12.20 per piece (Ex VAT)

WAS

£2.54 - £14.64 per piece (Inc VAT)
Special Offer

Special Offer

ArborDeck Timber Decking UC3u Treated Smooth or Grooved Reversible 32 x 150 x 4200mm (6") (Finished Size 27x145mm)

WAS: per piece

WAS £18.24

£14.87 per piece (Inc VAT)

WAS: per piece

WAS £15.20

£12.39 per piece (Ex VAT)

Transform your outdoor space with ArborDeck Timber Decking, a versatile and high-quality option for both traditional and contemporary gardens. These UC3u treated reversible decking boards, available...

WAS: per piece

WAS £18.24

£14.87 per piece (Inc VAT)

WAS: per piece

WAS £15.20

£12.39 per piece (Ex VAT)

Featured Products

Siniat GTEC Standard Plasterboard Square Edge 2400 x 1200 x 12.5mm

Designed for partitions, linings and ceilings, this standard board is square edged and most suitable for undecorated applications or textured finishes. It is also suitable for gypsum plaster...

Siniat GTEC Cove 120 3000mm

A gypsum plaster moulding manufactured in a larger traditional cove profile, provides an attractive feature at the junction of walls and ceilings.

Unilin Thin-R Pitched Roof Insulation PIR Board 2400 x 1200 x 100mm

Unilin / Xtratherm XT Thermal Liner MF Insulation PIR Board is a composite insulated panel of Unilin / Xtratherm PIR insulation core with a composite foil facing bonded to 12.5mm tapered edge...

Kronospan P5 Chipboard Flooring TG4 FSC 18 x 2400 x 600mm

The Kronospan P5 is the perfect chipboard flooring for adding practical space to your loft area. It is rated Particleboard P5 and therefore designed to be a load-bearing panel for use in dry and...

Kronospan P5 Chipboard Flooring TG4 FSC 22 x 2400 x 600mm

The Kronospan P5 is the perfect chipboard flooring for adding practical space to your loft area. It is rated Particleboard P5 and therefore designed to be a load-bearing panel for use in dry and...

Plywood PRC HWTO Hardwood EN636-2 Class 2 FSC 18 x 1220 x 2440mm (8x4)

HWTO (Hardwoods Throughout) is an internal plywood. It has a light sanded finish, which can be easily cut or painted and has a variety of uses. Plywood is several panels comprising of at least 3...

Plywood PRC HWTO Hardwood EN636-2 Class 2 FSC 12 x 1220 x 2440mm (8x4)

HWTO (Hardwoods Throughout) is an internal plywood. It has a light sanded finish, which can be easily cut or painted and has a variety of uses. Plywood is several panels comprising of at least 3...

Special Offer

Green Incised Softwood UC4 Treated Garden Sleeper 95 x 195 x 2400mm

Transform your outdoor space with the versatile Green Incised Softwood UC4 Treated Garden Sleeper. Perfect for multiple landscaping applications, these sleepers can be used to craft raised garden...

OSB3 Board Square Edge FSC 11 x 2440 x 1220mm

The OSB is suitable for load bearing applications in construction and all different environmental conditions such as extreme humidity and dryness. The moisture resistant board is engineered for...

15I0005935_HOWARTH_2025-12-15T13_57_06.277Z_benefit_design_out.jpg.jpeg

OSB3 Board Square Edge FSC 18 x 2440 x 1220mm

Sterling OSB3 Board is the perfect solution for both construction professionals and DIY enthusiasts seeking durability and versatility in their projects. Engineered to withstand extreme humidity and...

CLS Timber PEFC 50 x 75 x 2400mm (Finished Size 38x63mm) 3x2

Canadian Lumber Standard (CLS) is a structural timber available in a variety of sections and lengths most commonly used in construction. CLS is PAR or Planed All Round, meaning it has gone through a...

Timloc%20Building%20Products%20-%20RTV-SPGR%20Single%20Pantile%20Roof%20Tile%20Vent%20-%20Grey.png

Timloc Single Pantile Tile Vent Grey (RTV-SPGR )

Profiled roof tile vent to enable ventilation directly into a roof space or connect to a ducted ventilation system. Timloc Building Products has been serving the building industry for over 50 years...

Gutter Trim Internal Corner Black (910017.CB)

These components make the detailing of roof perimeters fast and easy without having to make any compromise.

Timloc%20Building%20Products%20-%20AP200%20Plastic%20Access%20Panel.png

Timloc Clip Fit Plastic Access Panel White 205 x 205mm (AP200)

This access panel allows easy access to connectors and concealed services which are hidden in ceilings, ducting and behind dry lined walls. This access panel features a clip fit door panel.

Everbuild 503 SBR Bond 5 Litre (SBR5L)

SBR Bond is a latex based, water resistant bonding agent and admixture for use in areas subject to humidity, dampness and continuous water contact. It improves water resistance of cement mixtures by...

Brett Martin 110mm 0'-30' Adjustable Double Socket Bend Terracotta 110 x 250 x 110mm

Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 110mm 0'-30'...

BEX0032097_HOWARTH_2025-12-01T13_32_20.068Z_benefit_design_out.jpg.jpeg

Hanson Multicem Cement Plastic Bag (25kg)

Introducing Hanson Multicem Cement, your go-to solution for reliable and high-quality construction projects. This innovative cement mix is specially formulated for easy spreading, superior water...

Opti-Mix%20Mortar%20Plasticiser%201%20Litre.jpg.jpeg

Everbuild Opti-Mix Mortar Plasticiser 1 Litre

The world's first 1:25 plasticiser, Opti-Mix Mortar Plasticiser is essentially Pure Admix that smells and operates like the best traditional Admix. Superior plasticising effect, controlled dosage,...

C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 100mm (4x2)

£4.18 - £24.01 per piece (Ex VAT)

£5.02 - £28.81 per piece (Inc VAT)

C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC timber is your go-to choice for robust structural applications. C16 and C24 are strength grades; the higher the grade, the better the load...

£4.18 - £24.01 per piece (Ex VAT)

£5.02 - £28.81 per piece (Inc VAT)

C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 100mm (4x2)

£3.87 - £22.24 per piece (Ex VAT)

£4.64 - £26.69 per piece (Inc VAT)

C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as...