The Crosslines
Doors03 / 08

Built for the weight they carry.

A door is heavy, moves many times a day and carries a lock. We specify the frame, hardware and glass around those three facts.

A wide black uPVC sliding door opening onto a landscaped courtyard

Door types

The right movement for the span. Three ways a door can open, each trading swing space, seal and sash weight differently. The width of the opening usually decides which one is sensible.

A black double-leaf uPVC casement door with one hinged leaf opened inward
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Hinged movement

Casement doors

Single or double-leaf hinged doors with the tightest compression seal we offer.

Consider: They require swing space, and wind can catch an open leaf.

A two-panel black uPVC sliding patio door with one panel moved halfway open
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Two or three tracks

Sliding doors

Two- and three-track systems for patios and terraces, with no floor space lost.

Consider: The seal is lighter than a casement and wide sashes become heavier to move.

A wide black uPVC lift-and-slide door opening a living room to a landscaped lawn
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Lift, roll, then seal

Lift & slide

A large sash lifts clear of its seals before rolling, then drops back to compress them when closed.

Consider: Its deeper frame, hardware and structural needs should be planned before the opening is built.

Large lift-and-slide uPVC doors in a living room

Lift & slide

Wide glass. A proper seal.

Turn the handle and the sash lifts clear of its seal, rolling almost weightlessly. Turn it back and the sash drops to compress the seal like a hinged door.

Usually the right answer for a large living space opening onto a lawn or terrace. It is worth discussing before the walls go up.

Discuss the opening

Hardware matters

Doors wear at the parts that move. Hinges drop, rollers flatten, handles work loose and multipoint locks stop lining up. That is why hardware must be specified to the weight of the leaf.

Handles
Hinges
Rollers
Multipoint locks

Hardware is covered for twelve months. After that, we still source and fit replacement parts for anything we installed.

Glass for doors

The largest pane in the room deserves more thought.

Double glazing is our main recommendation across every door type: two 6mm panes separated by a sealed 10mm air gap. Single and triple glazing remain available, with 8mm or 12mm spacers where the opening calls for a different build.

The sealed cavity improves thermal insulation by slowing heat transfer and helps reduce outside noise. On large glazed doors, the frame, seals and hardware are specified together so the complete unit performs as intended.

Profiles we offer

Five manufacturers across three carefully selected series.

Aluplast logoASAŞ / Asaspen logoWintech logoWiner logoSkypen logo
Compare profiles

Bring us the span before the walls go up.

For wide sliding and lift-and-slide openings, an early conversation makes the finished door better—and prevents expensive corrections later.