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PSE

Planed Square Edge timber (PSE) is perfect for internal and decorative projects where a smooth, clean finish matters.

Also called planed timber, PSE timber is machine-planed on all four sides to create square edges and a sleek look, ideal for visible joinery, furniture making, shelving, and interior framing.

We offer a wide range of PSE timber sizes to suit everything from small DIY projects to large-scale construction or carpentry work.

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  •

    PSE Douglas Fir 120 x 120 x 2200mm

    High-quality Douglas Fir timber that has been planed square edged (PSE) for a smooth, uniform finish. Known for its strength, stability, and attractive reddish-brown grain, Douglas Fir is ideal for both structural and decorative joinery applications. It...

  • PSE Kiln Dried American Oak White 16 x 38mm

    £11.25 - £30.00 per piece (Ex VAT)
    £13.50 - £36.00 per piece (Inc VAT)
    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Redwood producing a high-quality expectational stable piece of timber. The timber is produced from slow-grown trees for over 60 years, which reduces the likelihood of splitting or twisting...
    £11.25 - £30.00 per piece (Ex VAT)
    £13.50 - £36.00 per piece (Inc VAT)

  • PSE Sepele 15 x 70 x 1000mm

    The PSE Sapele Timber offers a high-quality, smooth, and stable hardwood solution ideal for interior joinery and fine woodworking. Precision-machined with planed square edges (PSE), it delivers a clean, consistent finish that's ready for staining,...
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    PSE Timber Joinery Hardwood 50 x 100mm

    Discover the beauty and functionality of our Premium Planed Square Edge (PSE) Hardwood Timber, crafted to provide exceptional stability and durability. Perfect for a variety of projects, this natural timber product is available in different lengths,...
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    PSE Timber Joinery Hardwood 50 x 75mm

    Discover the beauty and functionality of our Premium Planed Square Edge (PSE) Hardwood Timber, crafted to provide exceptional stability and durability. Perfect for a variety of projects, this natural timber product is available in different lengths,...
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    PSE Timber Joinery Redwood FSC 19 x 125mm (Finished Size 14x120mm)

    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Redwood producing a high-quality expectational stable piece of timber. The timber is produced from slow-grown trees for over 60 years, which reduces the likelihood of splitting or twisting...
  • PSE%2094x94%20Top.jpg.jpeg PSE%2094x94%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 32 x 150mm (Finished Size 27x144mm)

    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Redwood producing a high-quality expectational stable piece of timber. The timber is produced from slow-grown trees for over 60 years, which reduces the likelihood of splitting or twisting...
  • PSE%2094x94%20Top.jpg.jpeg PSE%2094x94%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 32 x 225mm (Finished Size 27x216mm)

    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Redwood producing a high-quality expectational stable piece of timber. The timber is produced from slow-grown trees for over 60 years, which reduces the likelihood of splitting or twisting...
  • PSE%2094x94%20Top.jpg.jpeg PSE%2094x94%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 32 x 38mm (Finished Size 27x33mm)

    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Redwood producing a high-quality expectational stable piece of timber. The timber is produced from slow-grown trees for over 60 years, which reduces the likelihood of splitting or twisting...

  • PSE Timber Joinery Redwood PEFC 33 x 219mm (Nominal 38x225)

    £10.74 - £61.75 per piece (Ex VAT)
    £12.89 - £74.10 per piece (Inc VAT)
    This PSE (planed square edge) joinery redwood is manufactured to a smooth, consistent finish, making it well-suited for a variety of interior and exterior joinery applications. The timber offers dependable stability, clean machining and a neat appearance...
    £10.74 - £61.75 per piece (Ex VAT)
    £12.89 - £74.10 per piece (Inc VAT)
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    PSE Timber Joinery UC3u Redwood PEFC 25 x 100mm (Finished Size 20x94mm)

    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Redwood producing a high-quality expectational stable piece of timber. The timber is produced from slow-grown trees for over 60 years, which reduces the likelihood of splitting or twisting...
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    PSE Timber Joinery UC3u Redwood PEFC 25 x 50mm (Finished Size 20x44mm)

    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Redwood producing a high-quality expectational stable piece of timber. The timber is produced from slow-grown trees for over 60 years, which reduces the likelihood of splitting or twisting...

Planed Square Edge Timber

What is PSE timber?

PSE Timber, short for Planed Square Edge timber, is a type of softwood that has been machine-planed on all four sides to create a smooth surface and precise, square edges.

Unlike rough sawn timber, which has a more rustic, unfinished look, PSE timber offers a clean, uniform appearance that makes it ideal for visible applications such as interior joinery, furniture, shelving, and decorative features.

The planing process not only enhances the timber’s visual appeal but also makes it easier and safer to handle, reducing the risk of splinters and improving its suitability for painting, staining, or varnishing.

Common Uses for PSE Timber:

  • Interior joinery
  • Furniture making
  • Shelving and storage
  • Window boards and skirting
  • Boxing in pipework
  • Decorative trim and finishing

Benefits of Using PSE Timber:

  • Smooth finish ideal for painting or staining
  • Easy to handle and work with
  • Reduced need for sanding or further preparation
  • Clean, uniform sizing for a professional finish
  • Suitable for a wide range of interior applications

Explore our full range online, or visit your local Howarth branch to speak with one of our timber experts. Many branches also offer a convenient timber cutting service to get the exact size you need. Find your nearest branch here.

Frequently Asked Questions

Whitewood or Redwood?
Whitewood and Redwood are not technical terms but instead relate to the type of tree that the wood has been sourced from. As such, choosing which one to use for your PSE timber is generally done to personal preference. Whitewood is a fast-growing spruce that is native to wetter parts of the world. Due to the speed that it grows, whitewood has a wide grain and is light. Redwood, on the other hand, is most commonly derived from pine which is native to cooler parts of the world. Compared to Whitewood, Redwood looks neater.
Why do PSE products have two sizes?
Due to the nature of PSE, all PSE timbers come with two sizes: The first size listed is the nominal size, whilst the second is the finished size; this second one is the size that you will receive. Nominal relates to the rough sawn and unprocessed dimensions of timber as it is cut, graded and kiln dried in a mill. The finished size relates to the timber that has been machined (this involves a series of sharp cutters revolving at high speeds over the timber), shaving it down to a smooth and more uniform dimension, that is more attractive.