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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 Timber Joinery Redwood FSC 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...
  • PSE%2044x44%20Main.jpg.jpeg PSE%2044x44%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 50 x 50mm (Finished Size 44x44mm)

    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%2020x20%20Main.jpg.jpeg PSE%2020x20%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 25 x 25mm (Finished Size 20x20mm)

    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%2033X12%20MAIN.jpg.jpeg PSE%2033X12%20DETAIL%20ANGLE.jpg.jpeg

    PSE Timber Joinery Redwood FSC 16 x 38mm (Finished Size 12x34mm)

    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%2020x69%20Main.jpg.jpeg PSE%2020x69%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 25 x 75mm (Finished Size 20x69mm)

    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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    Western Red Cedar PSE Screen Slats Fencing 25 x 50 x 1830mm (Finished Size 18x44mm)

    Western Red Cedar is a premium timber product that is perfect for multiple applications including screening, slatted fencing, contemporary fencing and cladding external buildings. Western Red Cedar is one of the lightest softwoods.Western cedar at the...
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    PSE Timber Joinery Redwood FSC 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...
  • PSE%2020x44%20Main%20%20GREEN.jpg.jpeg PSE%2020x44%20Top%20Angle%20GREEN.jpg.jpeg

    PSE Timber Joinery UC3u Redwood FSC 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...
  • PSE%208.5x20%20Main.jpg.jpeg PSE%208.5x20%20Top.jpg.jpeg

    PSE Timber Joinery Redwood FSC 13 x 25mm (Finished Size 8.5x20mm)

    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 Redwood FSC 25 x 150mm (Finished Size 20x144mm)

    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 Whitewood FSC 22 x 50mm (Finished Size 18x44mm)

    Planed Square Edge (PSE) Timber is manufactured from Scandinavian Whitewood, offering a strong, straight grained wood with a smooth and even texture. This type of timber can be used for general joinery or carpentry, as well as for use in the building and...
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    PSE Timber Joinery Redwood FSC 19 x 75mm (Finished Size 14x69mm)

    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%2033x44%20Main.jpg.jpeg PSE%2033x44%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 38 x 50mm (Finished Size 33x44mm)

    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%2014x20%20Main.jpg.jpeg PSE%2014x20%20Top.jpg.jpeg

    PSE Timber Joinery Redwood FSC 19 x 25mm (Finished Size 14x20mm)

    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%2020x194%20Main.jpg.jpeg PSE%2020x194%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 25 x 200mm (Finished Size 20x194mm)

    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 Redwood FSC 25 x 125mm (Finished Size 20x119mm)

    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 Redwood FSC 25 x 175mm (Finished Size 20x169mm)

    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 Redwood FSC 25 x 38mm (Finished Size 20x33mm)

    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%2014x94%20Main.jpg.jpeg PSE%2014x94%20End.jpg.jpeg

    PSE Timber Joinery Redwood FSC 19 x 100mm (Finished Size 14x94mm)

    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%2044x69%20Main.jpg.jpeg PSE%2044x69%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 50 x 75mm (Finished Size 44x69mm)

    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%2020x219%20Main.jpg.jpeg PSE%2020x219%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 25 x 225mm (Finished Size 20x219mm)

    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%2012X44%20MAIN.jpg.jpeg PSE%2012X44%20DETAIL%20ANGLE.jpg.jpeg

    PSE Timber Joinery Redwood FSC 16 x 50mm (Finished Size 12x44mm)

    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%2044x94%20Main.jpg.jpeg PSE%2044x94%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 50 x 100mm (Finished Size 44x94mm)

    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%2069x69%20Main.jpg.jpeg PSE%2069x69%20Top%20Angle.jpg.jpeg

    PSE Timber Joinery Redwood FSC 75 x 75mm (Finished Size 69x69mm)

    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.