uPVC Sash windows

Sash window

Window Energy Ratings


Our EcoSlide Window has been subjected to Window Energy Rating (WER) simulation calculations by an approved British Fenestration Ratings Council (BFRC) simulator. The window has achieved A+6, A+1 or B-9 rating (depending on glass configuration). Independently tested at a UKAS test house our EcoSlide Window has been tested in accordance with BS. 6375 (Air Infiltration and Water Permeability) and has achieved outstanding results. The figures achieved indicate that the Weather Performance Rating for the EcoSlide Vertical Slider is rated as severe.

Test …..Results
Air Permeability … |….600Pa / Class 2
Watertightness . .. |….200Pa / Class 5A
Wind Resistance .. |….1600Pa / Class 4

A Rating glass is supplied as standard with all our windows.

Sealed Unit Specifications

B Rated (-9) 4/16/4 Energikare comprising of 4mm Optiwhite and 4mm K on Optiwhite with argon gas filling, black spacer bar as standard. Spacer bar also available in a selection of colours at no extra cost – white, black, chrome, gold, brown.

A Rated (+1) 4/16/4 Energikare comprising of 4mm Optiwhite and 4mm K on Optiwhite with argon gas filling, black swiss spacer V as standard. Spacer bar is also available in grey.
A Rated (+6)  4/16/4 Planitherm comprising of 4mm Diamante and 4mm Planitherm Total with argon gas filling, black swiss spacer V as standard. Spacer bar is also available in grey.

Click on the image below to view the certificate on the BFRC website.