Browse our full range of feather edge boards and external claddings for more options to suit every outdoor project. Nottage Timber Merchants supply trade and DIY customers from our yard in Bridgend, with local delivery available across South Wales.
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Original: $7.23
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$2.53The Story
Treated rebated halflap shiplap cladding in 16mm x 125mm is a pressure-treated Scandinavian redwood board machined with an overlapping rebated profile that sheds water cleanly. Finished at approximately 12mm x 120mm with an effective cover of 110mm, it is ready for outdoor use straight from the yard.
Specifications
| Property | Detail |
|---|---|
| Material | Scandinavian redwood |
| Treatment | Pressure treated for rot and insect resistance |
| Profile | Rebated halflap shiplap |
| Nominal Size | 16mm x 125mm |
| Finished Size | Approx. 12mm x 120mm |
| Effective Cover | 110mm per board |
| Lengths Available | 3.9m, 4.2m, 4.5m, 5.4m |
| Use Class | Suitable for exterior use |
What it's used for
- Cladding the external walls of garden sheds and storage buildings
- Finishing summerhouses and garden offices where a neat, weathertight profile is needed
- Re-cladding or repairing existing outbuildings where boards have weathered or rotted
- General DIY and trade projects requiring an external timber wall covering
Fitting and handling
Allow the boards to acclimatise on site for at least 48 hours before fixing, keeping them stacked flat and covered to prevent warping from sudden moisture changes. Fix through the face or rebated lap using corrosion-resistant ring-shank nails or screws, working from the bottom course upwards so each board overlaps the one below. Although the timber is pressure treated, exposed cut ends should be coated with an end-grain preservative, and a top coat of exterior paint, stain or oil will extend service life and improve appearance.
FAQ
What is the difference between rebated halflap shiplap and standard shiplap cladding?
Standard shiplap uses a simple rebate on one edge so boards overlap face-to-face. Rebated halflap shiplap has a matching rebate cut into both the top and bottom edges of each board, which creates a tighter, more precise fit that reduces gaps and improves weather resistance without relying on a thick overlap.
Does the pressure treatment mean I don't need to apply a finish?
The pressure treatment protects the timber against rot and insect attack, but it does not provide a decorative finish or full UV protection. Applying an exterior paint, stain or preservative oil will protect the surface from weathering and help maintain the appearance of the cladding over time.
How do I calculate how many boards I need for my project?
Divide the total wall area you need to cover by the effective cover width of 110mm (0.11m). For example, a wall 2.4m high and 3m wide gives 7.2 square metres, which at 0.11m cover per board requires approximately 66 linear metres of cladding. Always add 10 per cent for waste and cutting.
Browse our full range of feather edge boards and external claddings for more options to suit every outdoor project. Nottage Timber Merchants supply trade and DIY customers from our yard in Bridgend, with local delivery available across South Wales.
Description
Treated rebated halflap shiplap cladding in 16mm x 125mm is a pressure-treated Scandinavian redwood board machined with an overlapping rebated profile that sheds water cleanly. Finished at approximately 12mm x 120mm with an effective cover of 110mm, it is ready for outdoor use straight from the yard.
Specifications
| Property | Detail |
|---|---|
| Material | Scandinavian redwood |
| Treatment | Pressure treated for rot and insect resistance |
| Profile | Rebated halflap shiplap |
| Nominal Size | 16mm x 125mm |
| Finished Size | Approx. 12mm x 120mm |
| Effective Cover | 110mm per board |
| Lengths Available | 3.9m, 4.2m, 4.5m, 5.4m |
| Use Class | Suitable for exterior use |
What it's used for
- Cladding the external walls of garden sheds and storage buildings
- Finishing summerhouses and garden offices where a neat, weathertight profile is needed
- Re-cladding or repairing existing outbuildings where boards have weathered or rotted
- General DIY and trade projects requiring an external timber wall covering
Fitting and handling
Allow the boards to acclimatise on site for at least 48 hours before fixing, keeping them stacked flat and covered to prevent warping from sudden moisture changes. Fix through the face or rebated lap using corrosion-resistant ring-shank nails or screws, working from the bottom course upwards so each board overlaps the one below. Although the timber is pressure treated, exposed cut ends should be coated with an end-grain preservative, and a top coat of exterior paint, stain or oil will extend service life and improve appearance.
FAQ
What is the difference between rebated halflap shiplap and standard shiplap cladding?
Standard shiplap uses a simple rebate on one edge so boards overlap face-to-face. Rebated halflap shiplap has a matching rebate cut into both the top and bottom edges of each board, which creates a tighter, more precise fit that reduces gaps and improves weather resistance without relying on a thick overlap.
Does the pressure treatment mean I don't need to apply a finish?
The pressure treatment protects the timber against rot and insect attack, but it does not provide a decorative finish or full UV protection. Applying an exterior paint, stain or preservative oil will protect the surface from weathering and help maintain the appearance of the cladding over time.
How do I calculate how many boards I need for my project?
Divide the total wall area you need to cover by the effective cover width of 110mm (0.11m). For example, a wall 2.4m high and 3m wide gives 7.2 square metres, which at 0.11m cover per board requires approximately 66 linear metres of cladding. Always add 10 per cent for waste and cutting.
Browse our full range of feather edge boards and external claddings for more options to suit every outdoor project. Nottage Timber Merchants supply trade and DIY customers from our yard in Bridgend, with local delivery available across South Wales.