Door Set Energy Ratings
Door Set Energy Ratings - DSER's
Door Set Energy Ratings (DSER’s) were recently introduced to the entrance door market, to provide a simple yet effective way of assessing the energy efficiency of residential doors such as composite doors (similar to choosing a washing machine).
Rockdoor are the only composite door manufacturer in the industry to have an entire series of doors which are available with an A-Rating as standard. Your Rockdoor will have an energy rating sticker attached to the door.
We achieve A-Ratings using many innovative techniques, ensuring that heat loss through our composite door is the lowest in the industry. The Ultimate Series Rockdoor features high performance low-emissivity soft coated glass which offers excellent thermal insulation when incorporated within a double glazed unit filled with argon gas and warm edge spacer bars.
Featuring a 50mm thick door sash, argon filled double glazed unit, soft coat thermally efficient glass and a carbon fibre reinforced innerframe, Rockdoors Ultimate Series is available with an A-Rating (if chosen with clear backing glass) as standard -a first in the industry across a range - making it the most advanced thermally efficient and secure composite door available.
Featuring a 44mm sash, argon filled double glazed unit and hard coat thermally efficient glass, Rockdoors Elite Series is C-Rated as standard (if chosen with clear backing glass), which exceeds what many other composite door manufacturers can achieve.
Featuring a 44mm sash, double glazed unit and thermally efficient glass, Rockdoors Select Series is E-Rated as standard (if chosen with clear backing glass), which meets the industry standard keeping you warm and cosy in your home.
What could change your Door Set Energy Rating?
When choosing your Rockdoor Composite Door, we recommend choosing a clear backing glass(the piece of glass on the double glazed unit behind the glass design) to ensure optimum thermal performce. This is because we can only use our Soft Coat (Ultimate Series) and Hard Coat (Elite Series) thermally efficient glass on clear glass. When a patterned backing glass is used, this drops your energy rating as this style of obscure glass cannot use this technology.
Even if your Door Set Energy Rating drops down sligthly, you can still feel confident your door will keep more heat in the house than other composite doors on the market.
For exact thermal efficiency ratings please design a door using our composite door configurator.