uPVC Sash Window Technical Information

Technical Information

Frame Specification

uPVC sliding sash windows are manufactured to exact customer requirements. Widths can range from a minimum of 370mm to a maximum of 1600mm.
Heights can range from a minimum of 740mm to a maximum of 3000mm.
Thermally efficient and environmentally-friendly, our windows mimic the aesthetic appeal of a classic timber box sash window while delivering all the benefits of a modern PVC-U system.

Tilt & Easy Clean Function, Low maintenance PVC-U vertical sliding sash windows only require a quick wipe down with a damp cloth to keep them looking as good as new.
The window sashes feature an inward opening tilt facility to allow easy and safe cleaning of the outside frame and glass from inside the building. This is particularly useful for multi-storey windows or windows positioned in hard to reach places.

Hardware Fittings

Sash horns

A Victorian innovation, they helped shed water from the sash and covered the end grain of the wood preventing water penetration. On our uPVC windows they are purely decorative. Available as run through horns (extra cost).

Handles & Locks

White as standard, gold, chrome, satin chrome and black options available (extra).

Trickle vents

Now included as standard, you must specify if you do not require them

Min Window Width – 370mm / Max Window Width 599mm. No of Vents – x1 2500. EQA 2500

Min Window Width – 600mm / Max Window Width 849mm. No of Vents – x2 5000. EQA 2500

Min Window Width – 850mm / Max Window Width 1099mm. No of Vents – x3 7500. EQA 2500

Min Window Width – 1100mm / Max Window Width 1600mm. No of Vents – x4 1000. EQA 2500


Gaskets & Sight Lines

Equal sight line

Fitted as standard, most uPVC windows have unequal sight-lines. This is where the glass in the opening sections appears to be smaller than the glass in the fixed part sections. To duplicate the equal sight lines of the traditional sliding sash we have created a special insert which is fitted to the non opening section to reduce its width to match that of the opening sash. Thus a more aesthetic appearance is obtained.

Low Line gaskets / weather seals

Fitted as standard, gives the window a clean look, as well as improving long term weathering and thermal efficiency.

Face Frame
uPVC Window Features


1. Grade A UPVC Profile

2. 24mm Argon Filled Units, Toughened Glass Both Panes

3. High Quality Locking. White as standard. Chrome, Satin Chrome, Gold & Black (extra)

4. Run Through Horns (extra)

5. External Astragal Bars (extra)

6. Choice of Cills, 152mm as standard (185 & 225mm extra)

Colourfast UPVC Profile – Colourfast UPVC Profile – Our grade ‘A’ upvc profiles have been rigoursly tested for a number of years to ensure minimal maintenance to keep your windows in top condition. All double glazed products are supplied with a 10 year colourfast guarantee.

Value for Money Double Glazing Adding new upvc windows & doors to your home look great and adds value