Internorm Aluminium Clad Sliding Doors

Internorm’s aluminium clad sliding doors are designed for homeowners who demand performance without compromising on style. With a timber-aluminium composite construction, triple glazing as standard, and exceptional thermal values, these doors are ideal for low-energy and passive homes.

Whether you're framing a countryside view or expanding a modern space, Internorm sliding doors offer smooth lift-and-slide operation, large-format glazing, and fully concealed thresholds for a seamless transition between inside and out.

Internorm is one of the few manufacturers offering Passive House Certified lift-and-slide doors. Their advanced composite construction combines timber, thermal foam insulation, and aluminium to achieve some of the best U-values on the market — as low as 0.64W/m²K.

This makes them ideal for high-performance self-builds and eco-conscious renovations, where comfort, energy savings, and airtightness are critical.

Internorm sliding doors can be configured with panels up to 12 metres wide, making them perfect for wide openings, panoramic views, and contemporary architecture. Despite their size, the lift-and-slide mechanism ensures smooth, effortless movement — even with large, triple-glazed panels.

Thresholds can be flush-fitted into the floor for level internal-external transitions, enhancing accessibility and visual flow.

Internorm doors are fully made to order with a wide choice of finishes and specifications:

At Burgess Windows and Doors, we work closely with Internorm to deliver a premium installation experience from start to finish. Our in-house team is trained in composite lift-and-slide systems and understands the precision required for high-spec, airtight installations.

We are FENSA-registered, fully insured, and work throughout Oxfordshire, Northamptonshire, Buckinghamshire, and the Cotswolds — trusted by homeowners, architects and developers for over 25 years.