Vertical Sliding Secondary Glazing
£274.00
Made-to-measure, UK-manufactured aluminium secondary glazing. Panes slide up and down, often a good match for sash windows.
Guide price — confirmed by quote. Enter your sizes (mm) and options for an instant guide price including VAT.
Request a formal quote and we confirm your price and invoice you. Nothing is made until you have approved your quote and paid in full.
Description
About our vertical sliding secondary glazing
Made-to-measure vertical sliding aluminium secondary glazing, fitted on the inside of your existing window. Panes slide up and down, following the lines of a traditional sash window, so the secondary glazing sits neatly behind period sashes and can be opened for ventilation and cleaning.
Because it sits inside the existing window, your original frames stay in place, which makes secondary glazing a practical choice for period and listed properties.
Vertical sliding secondary glazing is the natural partner for traditional sash windows. The meeting rail can be lined up with the meeting rail of the original sash, so the secondary glazing follows the lines of the window and stays discreet from inside and out. That makes it a popular choice for period homes and listed buildings. Read more in our guide to secondary glazing for sash windows.
Sizes
Every unit is made to your measurements in millimetres. Online guide prices are available for widths of 300–1540 mm and heights of 550–3000 mm. For larger or unusual sizes, please request a quote.
Glass options
- 4mm toughened safety glass (standard)
- 4mm Low-E toughened
- 6mm toughened
- 6mm Low-E toughened
- 6.4mm and 6.8mm laminated
- 6.8mm acoustic laminated
- 8.8mm laminated
- 8.8mm acoustic laminated
- 8.8mm Low-E laminated
- 10.8mm laminated
- 10.8mm acoustic laminated
Frame colours
- White RAL 9003 (standard)
- Cream RAL 9001
- Anthracite grey RAL 7016
- Black RAL 9005
- Van Dyke brown
How pricing works
The price shown is a guide price including VAT, based on the sizes and options you enter. When you are ready, click Request a formal quote: your sizes, options and guide price are added to our quote form. We check your details (for supply & fit, we visit, survey and measure every window), confirm your price in a formal quote and invoice you. Payment is taken in full, by the payment method shown on your invoice, before your order goes into manufacture.
Delivery and fitting
Choose supply only (DIY), delivered for you to fit yourself, or supply & fit by a professional fitter. Before requesting your quote, follow our guide on how to measure for secondary glazing.
Delivery and fitting lead times vary by product and location, and are confirmed on your quote.
Delivery is included in your quoted price. Delivery to UK mainland addresses is free on orders of £500 or more (inc VAT). For orders under £500, delivery to UK mainland addresses costs £60 (inc VAT). We also deliver to the Scottish Highlands, islands and offshore locations, at an extra site-specific cost that we quote separately; the free delivery and £60 delivery charge above apply to UK mainland addresses only.
Warranty: 10-year manufacturer’s warranty on the product, plus a 1-year warranty on our installation when you choose supply & fit. This is in addition to your statutory rights.
We supply and fit UK-wide.

