uPVC & Aluminium Vertical Sliding Windows

Classic vertical sliding sash windows for the trade in Poole, Devon and Wiltshire with all the benefits of modern technology. Smooth sliding opening for maximum ventilation and the appearance of traditional timber sash windows.

Vertical sliding sash windows for trade glazing installers.

Vertical sliding sash windows are often specified for period property installations. Thanks to advancements in technology, today’s cost-effective PVCu and aluminium vertical sliders match their original timber counterparts in terms of appearance with the superior performance capabilities of modern materials.

At TDK Trade Frames, we supply a selection of thermally efficient double-glazed vertical sliders to glazing installers located close to Poole on the south coast of England. Our vertical sliders provide outstanding levels of thermal and security performance and can be specified in a range of sizes. They feature a selection of period features and accessories to match a wide range of period property styles.

What is a vertical sliding window?

A verticle sliding window is one that you can open by pushing the frame up rather than out like a more common window. The sliding sash window is becoming more popular because it saves space, has a classic heritage window style and is now available in modern materials.

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Resources & technical information:

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Technical Specification

  • Available with a range of traditional features
  • U values as low as 1.4 W/m²K
  • Optional Georgian bars and sash horns
  • 128mm outerframe
  • PAS24 approved
  • A rated for thermal performance


Technical Specification

  • 137mm profile depth
  • U values as low as 1.1 W/m²K
  • 50kg maximum sash weight
  • Fixed or run-through sash horns
  • Deep bottom rail
  • 24mm or 28mm glazing width


Technical Specification

  • C rated for thermal performance
  • U values as low as 1.6 W/m²K
  • Glazing 28mm
  • Features a tilt in operation for easy cleaning
  • Frame depth 126mm
  • Square cut outerframe

Are sliding sash windows safe?

Yes, sliding sash windows are very safe. They can be locked securely and are easy to maintain and operate. The strength that modern PVCu and Aluminium provide when combined with double glazing ensures the sliding sash window is very robust.

Energy-efficient verticle sliding sash windows.

All of our verticle sliding sash windows for the trade are very thermally efficient with low U values. So when homeowners need something in-fitting with their period property but want to keep it cosy these double-glazed verticle sliders will do the job.

High Security verticle sliders.

The frames for all of our verticle sliding windows have a secure window design for our trade customers. Give your window customers peace of mind with these modern windows which feature secure locks and modern robust frames.

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