Case Study: Conservation Compliant Sash Windows
Using conservation compliant UPVC sash windows to replace timber - and why it is the way forward.

This week we completed a superb project of replacing a complete house of timber – bar the orangery – with Premium Masterframe sash windows. The house originally had single glazed timber sash windows and timber doors which as one can imagine were draughty, had no insulation factor and were a headache when it came to upkeep. Above as pictured is the specification of window we used: the Masterframe Vintage profile which is conservation compliant.
Above is how the front of the house was finished along with a Solidor timber core composite door for the authentic feel of a timber door with bespoke astragal bar side windows. The importance here of using conservation compliant UPVC to replace timber windows is the authentic look. Masterframe are competent using the patented Timberweld when joining their sashes which is how a timber window would be put together. The authentic run through sash horn is also routered into the profile using a state-of-the-art CNC machine only available to Masterframe rather than stuck on as additional piece of profile – exactly how a timber window would be made. Even the astragal Georgian glass decoration is implemented onto the window so sophisticatedly, that these are given a 10-year guarantee themselves. The quality of this system is unrivalled.
Moving onto the rear of the house, using the same system along with a Solidor timber core composite back door. The use of the authentic deep bottom rail to allow for hook lifts at the bottom of the windows makes for easy use and the 2/3 split windows upstairs are Egress compliant. All tilt inwards for easy cleaning from the inside making the maintenance of these windows so much easier for the customer – and of course NO PAINTING! The satin white woodgrain finish - which is standard - is in keeping with the traditional timber finish. Masterframe finishes all of their windows themselves and are able to achieve any colour including luxury paints such as Farrow&Ball or Little Greene.
Furthermore, it is clear why Masterframe sash windows are the best choice when replacing timber or even old UPVC windows. An excellent example of why this specification of window are approved for timber replacement in conservation areas. Ourselves and Masterframe work closely to ensure only quality products are installed and all specification requirements are met.


