Howarth Timber & Building Supplies

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News & Information (5)

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 ...

Project: Summer House

Delve into Tom Wild's summer house project, created using materials from Howarth Timber & Building Supplies. Tom Wild set upon a project to build a summer house in his back garden, with storage a ...

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 ...

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 ...

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 (66)

C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 95 x 4800mm (4x2)

WAS:

WAS:

WAS

£4.28 - £24.63 per piece (Ex VAT)

WAS

£5.14 - £29.56 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...

WAS:

WAS:

WAS

£4.28 - £24.63 per piece (Ex VAT)

WAS

£5.14 - £29.56 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 95 x 4800mm (4x1)

WAS:

WAS:

WAS

£4.69 - £26.95 per piece (Ex VAT)

WAS

£5.63 - £32.34 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...

WAS:

WAS:

WAS

£4.69 - £26.95 per piece (Ex VAT)

WAS

£5.63 - £32.34 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Redwood 47 x 100 x 3600mm (4x2)

WAS: each

WAS £15.84

£10.80 each (Inc VAT)

WAS: each

WAS £13.20

£9.00 each (Ex VAT)

C24 deck joists are perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground...

WAS: each

WAS £15.84

£10.80 each (Inc VAT)

WAS: each

WAS £13.20

£9.00 each (Ex VAT)
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 70mm (3x2)

WAS:

WAS:

WAS

£3.28 - £18.88 per piece (Ex VAT)

WAS

£3.94 - £22.66 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...

WAS:

WAS:

WAS

£3.28 - £18.88 per piece (Ex VAT)

WAS

£3.94 - £22.66 per piece (Inc VAT)
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 95mm (4x1)

WAS:

WAS:

WAS

£4.38 - £25.17 per piece (Ex VAT)

WAS

£5.26 - £30.20 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...

WAS:

WAS:

WAS

£4.38 - £25.17 per piece (Ex VAT)

WAS

£5.26 - £30.20 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 70mm (3x2)

WAS:

WAS:

WAS

£3.52 - £20.21 per piece (Ex VAT)

WAS

£4.22 - £24.25 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...

WAS:

WAS:

WAS

£3.52 - £20.21 per piece (Ex VAT)

WAS

£4.22 - £24.25 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Redwood 47 x 150 x 3600mm (6x2)

WAS: each

WAS £23.65

£16.20 each (Inc VAT)

WAS: each

WAS £19.71

£13.50 each (Ex VAT)

C24 deck joists are perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground...

WAS: each

WAS £23.65

£16.20 each (Inc VAT)

WAS: each

WAS £19.71

£13.50 each (Ex VAT)
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 145mm (6x2)

WAS:

WAS:

WAS

£6.57 - £37.76 per piece (Ex VAT)

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£7.88 - £45.31 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...

WAS:

WAS:

WAS

£6.57 - £37.76 per piece (Ex VAT)

WAS

£7.88 - £45.31 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Redwood 47 x 100 x 4800mm (4x1)

WAS: each

WAS £21.07

£14.40 each (Inc VAT)

WAS: each

WAS £17.56

£12.00 each (Ex VAT)

C24 deck joists are perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground...

WAS: each

WAS £21.07

£14.40 each (Inc VAT)

WAS: each

WAS £17.56

£12.00 each (Ex VAT)
Rough Sawn Timber UC2 Treated Kiln Dried Regularised PEFC 44 x 44mm (2x2)

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WAS

£2.38 - £13.67 per piece (Ex VAT)

WAS

£2.86 - £16.40 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...

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WAS:

WAS

£2.38 - £13.67 per piece (Ex VAT)

WAS

£2.86 - £16.40 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Redwood 47 x 150 x 4800mm (6x2)

WAS: each

WAS £31.54

£21.60 each (Inc VAT)

WAS: each

WAS £26.28

£18.00 each (Ex VAT)

C24 deck joists are perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground...

WAS: each

WAS £31.54

£21.60 each (Inc VAT)

WAS: each

WAS £26.28

£18.00 each (Ex VAT)
C24 Timber Joists UC2 PEFC 44 x 145 x 3600mm (6x2)

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£7.03 - £40.42 per piece (Ex VAT)

WAS

£8.44 - £48.50 per piece (Inc VAT)

C24-treated timber joists are a top choice for structural applications, including stud walls, roof and floor joists, and joinery. With a smaller cross-section than C16, they can support higher loads...

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£7.03 - £40.42 per piece (Ex VAT)

WAS

£8.44 - £48.50 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 44 x 95 x 3600mm (4x1)

WAS:

WAS:

WAS

£4.69 - £26.95 per piece (Ex VAT)

WAS

£5.63 - £32.34 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...

WAS:

WAS:

WAS

£4.69 - £26.95 per piece (Ex VAT)

WAS

£5.63 - £32.34 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 120mm (5x2)

WAS:

WAS:

WAS

£5.86 - £33.69 per piece (Ex VAT)

WAS

£7.03 - £40.43 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...

WAS:

WAS:

WAS

£5.86 - £33.69 per piece (Ex VAT)

WAS

£7.03 - £40.43 per piece (Inc VAT)
C16 Timber Joists Untreated Kiln Dried Regularised FSC 44 x 95mm (4x2)

WAS:

WAS:

WAS

£3.93 - £22.61 per piece (Ex VAT)

WAS

£4.72 - £27.13 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

£3.93 - £22.61 per piece (Ex VAT)

WAS

£4.72 - £27.13 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 195mm (8x2)

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£9.37 - £53.90 per piece (Ex VAT)

WAS

£11.24 - £64.68 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...

WAS:

WAS:

WAS

£9.37 - £53.90 per piece (Ex VAT)

WAS

£11.24 - £64.68 per piece (Inc VAT)
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 170mm (7x2)

WAS:

WAS:

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£7.66 - £44.05 per piece (Ex VAT)

WAS

£9.19 - £52.86 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...

WAS:

WAS:

WAS

£7.66 - £44.05 per piece (Ex VAT)

WAS

£9.19 - £52.86 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Green PEFC 45 x 145mm (6x2)

WAS:

WAS:

WAS £6.49

£4.50 - £25.88 per piece (Ex VAT)

WAS £7.79

£5.40 - £31.06 per piece (Inc VAT)

Our C24 timber joists are ideal for supporting your decked area. This timber is treated with UC4 preservative, meaning that not only is it ideal for outdoor use, but it is also suitable for direct...

WAS:

WAS:

WAS £6.49

£4.50 - £25.88 per piece (Ex VAT)

WAS £7.79

£5.40 - £31.06 per piece (Inc VAT)
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 220mm (9x2)

WAS:

WAS:

WAS

£9.85 - £56.64 per piece (Ex VAT)

WAS

£11.82 - £67.97 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...

WAS:

WAS:

WAS

£9.85 - £56.64 per piece (Ex VAT)

WAS

£11.82 - £67.97 per piece (Inc VAT)
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 120mm (5x2)

WAS:

WAS:

WAS

£5.47 - £31.47 per piece (Ex VAT)

WAS

£6.56 - £37.76 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...

WAS:

WAS:

WAS

£5.47 - £31.47 per piece (Ex VAT)

WAS

£6.56 - £37.76 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Green PEFC 45 x 95mm (4x2)

WAS:

WAS:

WAS £4.32

£3.00 - £17.25 per piece (Ex VAT)

WAS £5.18

£3.60 - £20.70 per piece (Inc VAT)

Our C24 timber joists are a perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the...

WAS:

WAS:

WAS £4.32

£3.00 - £17.25 per piece (Ex VAT)

WAS £5.18

£3.60 - £20.70 per piece (Inc VAT)
C16 Timber Joists Untreated Kiln Dried Regularised FSC 47 x 75mm (3x2)

WAS:

WAS:

WAS

£2.95 - £16.96 per piece (Ex VAT)

WAS

£3.54 - £20.35 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

£2.95 - £16.96 per piece (Ex VAT)

WAS

£3.54 - £20.35 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 170mm (7x2)

WAS:

WAS:

WAS

£8.20 - £47.16 per piece (Ex VAT)

WAS

£9.84 - £56.59 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...

WAS:

WAS:

WAS

£8.20 - £47.16 per piece (Ex VAT)

WAS

£9.84 - £56.59 per piece (Inc VAT)
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 190mm (8x2)

WAS:

WAS:

WAS

£8.76 - £50.34 per piece (Ex VAT)

WAS

£10.51 - £60.41 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...

WAS:

WAS:

WAS

£8.76 - £50.34 per piece (Ex VAT)

WAS

£10.51 - £60.41 per piece (Inc 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 2400 x 600 x 18mm

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 2400 x 600 x 22mm

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 Mixed Light Hardwood EN636-2S Class 2 FSC 18 x 1220 x 2440mm

MLH (Mixed Light Hardwoods) is an internal and external plywood. It has a light sanded finish, which can be easily cut or painted and has a variety of uses. These include treated exteriors such as...

Plywood PRC Mixed Light Hardwood EN636-2S Class 2 FSC 12 x 1220 x 2440mm

MLH (Mixed Light Hardwoods) is an internal and external plywood. It has a light sanded finish, which can be easily cut or painted and has a variety of uses. These include treated exteriors such as...

Special Offer

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

Sleepers are a fantastic multipurpose feature for garden and landscaping projects. Popular uses include raised garden beds, pathways, edging or borders, steps, and even fences or walls. These...

OSB3 Board Square Edge FSC 2440 x 1220 x 11mm

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...

OSB Board Square Edge FSC 2440 x 1220 x 18mm

Sterling OSB3 is engineered for both industrial and domestic applications, providing exceptional performance in extreme humidity and dryness. This moisture-resistant board is perfect for a wide range...

CLS Timber PEFC 50 x 75 x 2400mm

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...

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'...

Hanson Multicem Cement Bag 25kg

Multicem is an innovative cement mix, specially designed for easy spreading, excellent water retention, and superior plastic properties in mortar and concrete sub-structures. It ensures enhanced...

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 44 x 95 x 4800mm (4x1)

£4.69 - £26.95 per piece (Ex VAT)

£5.63 - £32.34 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...

£4.69 - £26.95 per piece (Ex VAT)

£5.63 - £32.34 per piece (Inc VAT)

C24 Timber Joists Kiln Dried Regularised PEFC 44 x 95mm (4x1)

£4.38 - £25.17 per piece (Ex VAT)

£5.26 - £30.20 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...