PSE Timber

PSE Timber or Planed Square Edge timber is a type of timber that has been planed on all sides to achieve a smooth finish, ideal for interior projects. The planing creates a sharp, squared edge, which is ideal for projects where a seamless finish with precise measurements is important. 

Due to its properties, PSE timber has a wide range of uses. It is ideal for making door frames, windows and other woodworking, as well as furniture making such as cabinets, shelving  and built-in projects such as wardrobes. For structural projects, our C16 and C24 timber may be a better option.

We stock a wide range of widths and thicknesses of PSE (Planed Square Edge) Timber, from 50mm to 225mm wide and 25mm to 100mm thick. These measurements refer to the “nominal size”, or the size they are initially cut to, but after planing on all sizes to achieve a smooth finish with sharp edges, the actual, finished size of the timber can be smaller by up to a few millimetres on all sides. 

PSE timber represents the highest standard in machined timber, where raw sawn timber undergoes precision planing on all four faces to create perfectly square edges and smooth surfaces. Our redwood PSE timber collection features kiln-dried Scandinavian pine, carefully selected and processed to meet British Standard BS EN 14081-1, ensuring consistent quality across every dimension.

Unlike rough sawn timber, PSE timber eliminates the guesswork. Each piece delivers exact dimensions, smooth finishes, and straight edges that translate directly into professional results. Whether you're creating bespoke joinery or structural framework, our PSE timber provides the reliability that experienced tradespeople and ambitious DIYers demand.

Comprehensive Size Range for Every Application

Our PSE timber collection spans from compact 25x50mm sections ideal for batten work and light framing, through to substantial 100x100mm posts perfect for heavy-duty structural applications. Popular sizes include:

Light Framework: 25mm thickness options from 50mm to 225mm widths provide excellent versatility for internal stud work, ceiling battens, and decorative applications.

Medium Applications: 38mm and 50mm thickness ranges offer increased strength for floor joists, roof construction, and general carpentry where structural integrity matters.

Heavy-Duty Solutions: Our 75x75mm and 100x100mm sections deliver the strength needed for fence posts, structural supports, and demanding construction applications.

Why Choose Redwood PSE Timber?

Redwood pine stands as Britain's preferred choice for PSE timber, offering exceptional value through its natural characteristics. The species provides excellent workability, taking screws and nails cleanly without splitting, while its natural resin content offers inherent resistance to moisture and decay.

Each piece undergoes careful kiln drying to achieve moisture content below 20%, preventing warping and ensuring dimensional stability throughout your project's lifetime. This controlled drying process, combined with precision planing, creates timber that machines beautifully and finishes to professional standards.

Applications That Demand PSE Quality

Professional joiners specify PSE timber where visible quality matters. Kitchen installations, built-in wardrobes, and custom shelving all benefit from PSE timber's smooth surface and exact dimensions. The material's consistent sizing eliminates time-consuming preparation, allowing direct assembly and finishing.

In structural applications, PSE timber's dimensional accuracy ensures proper bearing and connection details. Floor joists achieve consistent levels, while stud walls maintain true vertical alignment—critical factors in professional construction standards.

Expert Support When You Need It Most

At DIY Building Supplies, we understand that timber selection can make or break your project. Our technical team combines decades of industry experience with comprehensive knowledge of timber applications, grades, and specifications. We're here to ensure you select the right PSE timber for your specific requirements.

From calculating structural loads to recommending appropriate moisture barriers, our experts provide the guidance that transforms challenging projects into successful outcomes. When you choose DIY Building Supplies, you're not just buying timber—you're accessing the expertise that ensures your project exceeds expectations.

Ready to experience the PSE timber difference? Browse our complete collection of precision-planed timber, sold by the metre for maximum flexibility and value. Quality timber, expert advice, and reliable delivery, that's the DIY Building Supplies commitment to your project's success.