The heat that’s lost through standard composite doors (such as those made of wood or glass reinforced plastic) means they can’t compete with a Rockdoor in terms of security and energy efficiency.
Thanks to our unique S-Glaze technology eliminating draughts, and carbon fibre reinforcing meaning our door is timber free, we’re able to offer the largest range of A++ doors available - by some way too.
Like your safety, your energy bills are in good hands.
While strength and security matters when it comes to making sure no-one can force their way into your home, carbon fibre is also the material of choice when it comes to maximising thermal efficiency in composite doors.
Carbon fibre doesn’t permit heat loss like timber or aluminium strengthened doors do.
This is why all Ultimate Rockdoors feature carbon fibre reinforcing as standard - resulting in A++ composite doors.
S-Glaze for Thermal Efficiency
S-Glaze is our unique way of glazing Rockdoors for the ultimate thermal performance. The specially coated double glazed unit in a Rockdoor is filled with a safe gas called Argon, a gas great for insulation.
Our glass is then bonded to the door, vacuumed and locked in for life meaning no cold air can pass through the door like other door manufacturers that use clip on glazing cassettes.