Synseal has published a report that demonstrates how much – in cash terms – a modern conservatory can save a homeowner when compared to an older conservatory.
The headline figures are striking. If a conservatory is separated from the main house with thermally efficient doors, a householder can expect to save about £30 a year. If the conservatory is open to the house, the savings are far greater – more than £140 a year.
Furthermore, the Synseal Thermal Calculations Report has received the explicit approval from Assent Building Control, a provider of approved inspector services, who said: “It shows satisfactory regulatory compliance.”
Greg Tabberer, Synseal Extrusions’ R&D Engineer (and WER Simulator) said, “Synseal is passionate about improving the quality of our products and supporting our customers when they promote those products in the market. We cannot do that effectively if we are simply guessing what impact our products have on the day-to-day use of, say, a conservatory.”
To test the theory that modern conservatories are more efficient than their older counterparts an “old” conservatory was made using double-glazed 3-chamber PVC-U windows, with units made from float glass and aluminium spacer bar, and a PVC-U and aluminium conservatory roof glazed with 16mm polycarbonate.
The conservatory was then upgraded to new Legend triple-glazed multi-chambered PVC-U windows, with argon-filled units made with two low-e panes of glass and one float and Superspacer, and a Global PVC-U and aluminium conservatory roof glazed with Celsius Elite high performance double glass with a U value of 0.9W/m2K.
Everything else about the conservatory remained the same.
The calculations were performed in accordance with procedures set out in Approved Document L1B of the Building Regulations, and they show that by upgrading the glazing element of a conservatory that is fully opened up, the adjoining house can have a cost benefit of £142.71 per year (based upon gas central heating), or £124.86 per year (based upon electric under floor heating).
For a conservatory with thermal separating doors between the conservatory and the adjoining house (heated only when in use), the savings amount to £29.12 per year (based upon gas central heating), or £25.48 per year (based upon electric under floor heating).
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