Up To 30% Discounts on Windows, doors, conservatories and sunrooms Great deals on replacement conservatories and roofs. Thermotech Upvc Products are installers of the finest quality windows, doors, conservatories, sunrooms and garage conversions throughout South Wales. We carry out all home improvements such as porches, kitchen fitting, single storey extensions. We have a skilled team to cater to your needs...Please call us on 0800 917 1106 for a no-obligation quote.