Teak Conversion and PVC Upgrades

with A-rated double glazing

Glassworx can upgrade most Teak and PVC windows with Vistamtherm Elite A Rated Double glazed units, drastically reducing heat loss and condensation.VistaTherm Elite


Teak Conversions WindowThe benefits include:

  • Drastically reduced heating bills
  • 8 times more insulation than single glazing
  • No more condensation on your glass
  • Keep the natural beauty of hardwood frames
  • No internal work (no plastering or redecorating)
  • Reduction in external noise


The conversion system has been used successfully in Germany for more than 25 years and is covered by our 5 year guarantee. Our product is now even better due to the improvements in glass technology such as ‘low-e’ glass and Argon gas filling. Our units can now achieve a U-value of 1.1 or better.


We remove the old glass and putty/ beading. We router deeper if needed to accommodate the 24/20 units. We seal with silicone both inside and out adding to your security, while giving you a proven long life seal. Outside, your teak frames receive an undercoat of the relevant paint/ stain.


As part of our contract we can also seal draughty windows, fix broken hinges and make front and back doors airtight. Arch windows are also possible to convert. PVC and Aluminium windows can also be easily upgraded with Vistherm Elite A rated Units. These units are gas-filled and have a U value of 1.0 making them 70% more efficient than the glass that you have. If your windows are 12-years-old or more, then you won’t have gas-filled units, and even younger frames might not have A Rated glass.


Gaskets and Hinges can also be a problem for older windows but can easily be replaced and renewed as our tradesmen are on site.


Our installation teams have already converted hundreds of homes in the mid-west region, with very happy and satisfied customers. They have us to thank for their greatly reduced heating costs but more importantly, a comfortable home.



MGWX - Our Process
Our Process
Bespoke Design
& Manufacture
MGWX is a glass and glazing company who want to excel in customer service and satisfaction. From the first point of contact we look after YOUR needs, ensuring you are given the best advice to help you make the best, correct and most economical decisions for your mirror, glass and maintenance requirements.