Thermal efficiency of the Conservatory Roof System
U-values are basically a measurement of insulation. The lower the value the better the performance.
With Global warming being a real concern now, U-values are important, especially when choosing a conservatory.
At BDG, we have specifically designed our roof system to be as thermally efficient as possible
U-values for the roof rafter system
All of the BDG conservatory range has been designed to retain warmth. The U value of the roof rafter and ridge for example has a U-value of 1.5 whereas the “T-bar” system used by many of our competitors has a poor U value performance of 3 and above.
Figures and assumptions are quoted from BBA and suppliers' own literature.
Please note that the information above is for guidance purposes only. It is given in good faith and is correct to the best of our knowledge at time of writing. Customers should obtain complete copies of standards from the relevant authority.
BDG Rafter vs Competing T bar Non Thermal Rafter
Can you spot the thermal break? The BDG rafter is on the left.
Thermal Image through BDG’s thermally broken rafter.
At zero degrees outside temperature the internal temperature of the rafter is 18.7 degrees. This demonstrates an excellent thermal break and indicates that no condensation will form on the structure.
Roof Structural Strength
The strength of a conservatory is also extremely important and often overlooked. The strength of a conservatory is measured using “Wind and snow-loading” tests. These have been carried out for BDG’s product and the results below speak for themselves. The taller the result bar is the high the rafter strength was found to be.
The aluminium box section system supplied by BDG is nearly twice as strong as some traditional “T-bar” systems in the market.
Think back to the news headlines of freak weather conditions that we are predicted to receive before you make your decision. Also bear in mind that if you opt for a glass roof, there can easily be up to a tonne of weight in the glass units alone.
Figures and assumptions are quoted from BBA and suppliers own literature.
Please note that the information above is given is for guidance purposes only. It is given in good faith and is correct to the best of our knowledge at time of printing. Customers should obtain complete copies of standards from the relevant authorities.
Verification
All of the facts above can be verified by visiting the BBA website at www.bbacerts.co.uk. The BBA approval PDF document and other test information can be accessed on the BDG roof download page.
The BBA are a UKAS approved body of scientists that test all building products to very strict and equal guidelines. This means that you can compare each manufacturers system knowing that there is no bias involved in the results.
