The Story
Pressure treated rough sawn timber 75mm x 47mm (3x2) is a versatile, cost-effective softwood section for outdoor construction. Tanalised against rot and insect attack, it suits fencing frameworks, garden structures, and general landscaping work where structural grading is not required.
Specifications
| Property | Detail |
|---|---|
| Material | Softwood |
| Treatment | Tanalised pressure treatment (preservative impregnated) |
| Grade | Ungraded (not structurally graded) |
| Finish | Rough sawn |
| Nominal Size | 75mm x 47mm (3 x 2 inch) |
| Lengths Available | 3.6m (12ft), 4.8m (16ft) |
| Profile | Rectangular section |
| Use Class | UC3 (suitable for outdoor above-ground use) |
What it's used for
- Fencing rails and framework, including close-board and panel fence construction
- Decking subframes and joists where a treated, durable section is required
- Shed framing, pergola rafters, and garden structure uprights
- Raised planters, compost bays, and general landscaping timber work
Fitting and handling
Store this timber flat and off the ground on a level surface, with spacers between each course to allow air circulation and prevent warping. When cutting on site, treat all cut ends promptly with an appropriate end grain preservative to maintain the integrity of the Tanalised treatment and protect against moisture ingress. Fix using galvanised or stainless steel fasteners, which resist corrosion and avoid staining the timber over time.
FAQ
Is 75mm x 47mm rough sawn timber the same as 3x2?
Yes. 3x2 is the traditional imperial description for this section. The metric equivalent is 75mm x 47mm nominal, which reflects the size before any planing or finishing. Because it is rough sawn, the actual measured size will be close to the nominal but may vary slightly between pieces.
Can I use this timber for a decking subframe?
Yes, 75mm x 47mm pressure treated timber is a common choice for decking subframes and joist work in domestic garden projects. It is Tanalised for outdoor use, which helps resist rot. For heavier or elevated decking structures, check span tables and consult a structural engineer if load-bearing performance is a concern.
Does pressure treated timber need additional preservative?
The Tanalised treatment provides good protection through the body of the timber, but any cuts made on site expose untreated end grain. You should apply a suitable end grain preservative to all cut faces. No further treatment is required on uncut surfaces for standard above-ground applications.
Browse our fence rails collection for complementary sections and related profiles. Nottage Timber Merchants offer competitive pricing for trade and retail customers, with next-day delivery available to Bridgend and across South Wales on qualifying orders.
Description
Pressure treated rough sawn timber 75mm x 47mm (3x2) is a versatile, cost-effective softwood section for outdoor construction. Tanalised against rot and insect attack, it suits fencing frameworks, garden structures, and general landscaping work where structural grading is not required.
Specifications
| Property | Detail |
|---|---|
| Material | Softwood |
| Treatment | Tanalised pressure treatment (preservative impregnated) |
| Grade | Ungraded (not structurally graded) |
| Finish | Rough sawn |
| Nominal Size | 75mm x 47mm (3 x 2 inch) |
| Lengths Available | 3.6m (12ft), 4.8m (16ft) |
| Profile | Rectangular section |
| Use Class | UC3 (suitable for outdoor above-ground use) |
What it's used for
- Fencing rails and framework, including close-board and panel fence construction
- Decking subframes and joists where a treated, durable section is required
- Shed framing, pergola rafters, and garden structure uprights
- Raised planters, compost bays, and general landscaping timber work
Fitting and handling
Store this timber flat and off the ground on a level surface, with spacers between each course to allow air circulation and prevent warping. When cutting on site, treat all cut ends promptly with an appropriate end grain preservative to maintain the integrity of the Tanalised treatment and protect against moisture ingress. Fix using galvanised or stainless steel fasteners, which resist corrosion and avoid staining the timber over time.
FAQ
Is 75mm x 47mm rough sawn timber the same as 3x2?
Yes. 3x2 is the traditional imperial description for this section. The metric equivalent is 75mm x 47mm nominal, which reflects the size before any planing or finishing. Because it is rough sawn, the actual measured size will be close to the nominal but may vary slightly between pieces.
Can I use this timber for a decking subframe?
Yes, 75mm x 47mm pressure treated timber is a common choice for decking subframes and joist work in domestic garden projects. It is Tanalised for outdoor use, which helps resist rot. For heavier or elevated decking structures, check span tables and consult a structural engineer if load-bearing performance is a concern.
Does pressure treated timber need additional preservative?
The Tanalised treatment provides good protection through the body of the timber, but any cuts made on site expose untreated end grain. You should apply a suitable end grain preservative to all cut faces. No further treatment is required on uncut surfaces for standard above-ground applications.
Browse our fence rails collection for complementary sections and related profiles. Nottage Timber Merchants offer competitive pricing for trade and retail customers, with next-day delivery available to Bridgend and across South Wales on qualifying orders.
