Thermal Performance
Every Rockdoor is built to last, but it’s also designed to lock in warmth and keep the cold out. With a high-density inner core and innovative S-Glaze technology, our doors help your home stay cosy, comfortable, and energy-efficient, whatever the weather outside.
What makes a Rockdoor thermally efficient?
Thermally efficient PVC-U skins, a 50mm thick sash, an lon gasket, an aluminium reinforced inner frame encapsulated in PVC-U and high-density polyurethane foam work together to enable Rockdoor to achieve industry-leading thermal performance ratings.
It’s not just about the materials we use, though; it’s how we use them.
Rockdoor composite doors use various thermally efficient materials during their construction to reduce heat loss, which eliminates draughts through the glazing aperture of the door.
An example of this is our very own S-Glaze technology. Whilst it was designed to keep homeowners secure, it has also provided a huge advantage over our competitors when it comes to thermal performance.
Why is S-Glaze so effective against drafts?
The reason S-Glaze is so effective, is because it locks the glass into the door for life, meaning no draughts can get through the glazing aperture. To put it simply – there is nowhere for the air to go, therefore it cannot escape.
Clear Backing Glass is another great way to improve the thermal performance of your Rockdoor. A special coating can be applied to clear glass, making it even more thermally efficient. This cannot be applied to textured glass designs, so if you’re really looking to lower your energy bills – choose clear glass!
A low PVC-U Threshold is another option that you can choose to help reduce energy bills and achieve that all-important A energy rating!
Design your dream door with the Rockdoor 3D Door Designer.
Choose unique styles, colours, and glass, then visualise on your home.
Different door styles bring out different qualities in a glazing design, giving you a clearer idea of what suits your home best.
Case Studies to Inspire
To help you make a confident choice, we’ve brought together a collection of case studies showcasing how homeowners have chosen Rockdoor as their premium door of choice, and how it has elevated both the look and feel of their homes.
We are different.
We are Rockdoor.
Rockdoor stands in a league of its own because it’s engineered as a complete security and performance system. Every Rockdoor is built to order—crafted to look exceptional and last a lifetime. The result is a Rockdoor offering outstanding strength, efficiency, and long-lasting reliability, paired with style to suit any home.
