Description
Quick answer: Treated timber decking boards for garden decking, patios, seating areas and outdoor living spaces. These pressure treated softwood boards have a nominal size of 125mm × 32mm and a finished profile of approximately 120mm × 28mm.
What are these decking boards used for?
These treated timber decking boards are used to create outdoor decked areas for gardens, patios, seating areas, sheds, summerhouses and other outdoor living spaces. They can also be used as replacement deck boards where the size and profile are suitable.
The boards are kiln dried and pressure treated for exterior use, making them a practical choice for domestic and trade decking projects where a traditional timber deck finish is wanted.
What size are these decking boards?
These boards are sold as 125mm × 32mm decking boards. After machining, the finished profile is approximately 120mm × 28mm.
Available lengths include 2.4m, 3.0m, 3.6m, 3.9m, 4.2m and 4.8m. Choose the length that gives the best layout with the fewest joins, cuts and wasted offcuts.
Size note: Imperial sizes are provided as a familiar reference only. All timber is sold in metric measurements, so please use the listed metric size when ordering or checking suitability for your project.
Profile note: Decking board profiles may change at short notice depending on supplier availability and machining specification. Images and descriptions are provided as a guide only, and the exact profile supplied may vary slightly.
How many decking boards do I need?
The number of deck boards you need depends on the finished deck size, board direction, board spacing, wastage and whether you are using borders or angled layouts.
If you are planning a complete deck, use our Decking Calculator to work out decking boards, framing timber and screws together.
Is this the right decking board for your project?
Choose these treated softwood decking boards if you want a cost-effective timber decking surface for a garden, patio, seating area or outdoor walkway. They are suitable where you want real timber, easy cutting, straightforward fixing and a traditional outdoor deck appearance.
These boards are for the deck surface only. A complete deck also needs a suitable subframe, correct joist spacing, adequate support, drainage, ventilation and suitable exterior fixings.
Key features
- Pressure treated softwood: Treated for exterior decking and outdoor timber use.
- Kiln dried: Helps reduce movement during installation compared with wetter timber.
- Nominal size: 125mm × 32mm.
- Finished profile: Approximately 120mm × 28mm after machining.
- Multiple decking board lengths: 2.4m, 3.0m, 3.6m, 3.9m, 4.2m and 4.8m.
- Easy to cut and fix: Suitable for standard woodworking tools and exterior-grade decking fixings.
Things to check before ordering
- Deck size: Measure the finished deck area carefully before calculating board quantities.
- Finished board size: These boards finish at approximately 120mm × 28mm after machining.
- Board length: Choose lengths that suit your layout and reduce unnecessary joins where possible.
- Profile: Decking profiles may vary slightly depending on current supplier stock and machining specification.
- Subframe: Make sure your joists, supports and posts are suitable for the deck size, height and loading.
- Joist spacing: Use the Decking Joist Calculator to help plan joist centres and support layout for common domestic decking frames.
- Spacing between boards: Allow appropriate gaps between boards for drainage and normal timber movement.
- Ventilation: Decking should be installed with adequate airflow beneath the boards.
- Fixings: Use suitable decking screws or exterior-grade decking fixings.
- Cut ends: Re-treat freshly cut ends where possible after cutting.
- Maintenance: Timber decking will weather outdoors and should be cleaned and maintained as needed.
Complete the job
For a full deck build, you may also need suitable deck joists, support posts, weed membrane, exterior-grade decking screws and other subframe materials. Use the Decking Calculator to plan decking boards, frame timber and screws together.
