Sheerline have released the latest addition to their aluminium window and door range, the Prestige Composite Door Frame.

Designed to allow installers and fabricators to offer ‘whole-house’ aluminium solutions, where all frames are perfectly matched across a project. With consistent styling, colours, performance and guarantees across the house, right down to the frames around the composite doors.

A choice of two aluminium outer frames that fit both 44 and 48/49mm door blanks are all ready to help doorsets meet the new requirements of Part L coming into force on June 15th this year, with Sheerline’s unique Thermlock® thermal breaks delivering outstanding thermal efficiency as always.

With an outer frame that is 16x more rigid than reinforced PVC-u, installers can now offer a truly premium feeling door ‘experience’ that matches homeowners’ expectations of aluminium. The ultra-sturdy frame combines strength and durability and virtually eliminates door ‘bounce’. Choosing Sheerline ensures every window, bi-fold and entrance door across a project is supplied to the same high-quality standards, ready to wow discerning homeowners.

Created with installers in mind, features such as threshold cover strips that conceal fixings and universal sealable end caps, mean that delivering quality installations using the Prestige Composite Door Frame couldn’t be easier, perfect for busy installation teams.

The systems two low threshold options, tested to the requirements of Part M, can be run continuously under sidelights if required for improved aesthetics. With both thresholds able to accommodate a mechanically jointed ‘T’ transom/mullion, providing slimmer sightlines when doors are configured with sidelights. All designed to match seamlessly with the rest of Sheerline’s Prestige and Classic range.

Sheerline believes that homeowners should not have to compromise between style, function or keeping heating bills under control on any fenestration product. From ultra-slim 59mm sightline windows to bi-folds and roof lanterns everything is cohesive, sharing many common components to not only deliver perfectly matched looks, but also to help streamline the manufacturing process. Delivered on the same agile lead-times and available in bespoke and dual colour options, Sheerline’s newest addition to their Prestige range, underlines their commitment to offering installers and fabricators the very best ‘whole house’ aluminium solution.

To learn more about the Sheerline Composite Door Frame visit or You can also call 01332 978000 or email Follow @SheerlineSystem and @GarnalexSystems for the latest news and updates.