Timber Casement Windows London

Casement Windows

Our casement windows are designed with a flush-line appearance, combining traditional proportions with high-performance construction. Suitable for both period properties and contemporary projects, each window is made to order and tailored to specific project requirements.

Casement Period Casement Classic

Our casement windows are designed with a flush-line appearance, combining traditional proportions with high-performance construction. Suitable for both period properties and contemporary projects, each window is made to order and tailored to specific project requirements.

A range of custom sizes and configurations, including arched and bay forms, ensures a precise fit for each application. Frame profiles, glazing bar configurations and glazing specifications can be varied to suit aesthetic, thermal and acoustic requirements, resulting in a versatile window system that balances refined detailing with modern performance.

The collection

Casement Windows

A versatile casement window system offering custom sizes, glazing options and hardware configurations, designed to combine modern performance with refined architectural detailing.

Casement

Classic

This range is ideal for renovations,contemporary and new build projects.

Key features

69mm (14mm - 36mm Double glazed units)
78mm (36mm - 46mm Triple glazed units)

Hardware arrangement

Integrated ironmongery system with hidden hardware and multipoint locking.

Performance

PAS24 tested

Glazing options

Compatible with a range of double and triple-glazed unit specifications.
Further customisation is available.

Storm proof

Improved weather tightness with two seals.
Material specification options available.

Casement

Period

This range is ideal for listed buildings or properties in conservation areas.

Key features

Slim sash section: 56/57mm (4mm-26mm glazing units)

Hardware arrangement

Traditional: Expressed hardware; Hybrid: concealed + traditional appearance

Glazing options

Compatible with single, double, slimline and vacuum glazing specifications.
Triple glazing is only available within the Casement: Classic range.

Glazing Bars

Face applied.
True solid glazing bars with external putty beads. Material specification options available.

Sliding sash

Spring Balance Sash

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Spring Balance Sash

Classic

Suitable for properties free of conservation constraints

Key features

Spring loaded mechanism

Details

Face applied glazing bars

Performance

PAS24 tested

Glazing options

4-6-4 (14mm DGU)
4-12-4 (20mm DGU)
4-16-4 (24mm DGU)
7.7mm - 10.3mm vacuum glass
4-14-4-14-4 (40mm triple glazed)

Specification options

Material specification options
Glazing specification options

Spring Balance Sash

Conservation

Key features

Spring loaded mechanism

Details

True solid glazing bars with external putty beads.

Performance

PAS24 not applicable to this range

Slimline glazing

4-4-4 12mm DGU
4-6-4 14mm DGU
11.3mm Heritage vacuum glass

Specification options

Material specification options
Glazing specification options

Sliding sash range

Summary

Overview of key features within the Sliding Sash collection. Alternative glazing options and configurations are available.

Box Sash Spring Balance

Range

Sash
Depth

PAS 24
Part Q

Glazing

Glazing Bars

Operation

Box SashClassic

56mm

Yes

4-16-4 · 24mm DGU

Face-applied glazing bars, internally beaded

Cords & weights

Box SashClassic

50mm

Yes

4-6-4 · 14mm DGU
4-12-4 · 20mm DGU
Vacuum glass

Face-applied glazing bars, internally beaded

Cords & weights

Box SashClassic

73mm

Yes

4-14-4-14 · 40mm triple glazed

Face-applied glazing bars, internally beaded

Cords & weights

Box SashConservation

50mm

No

Slimline double glazing4-4-4 · 12mm DGU
4-6-4 · 14mm DGU
Heritage vacuum glass

True solid glazing bars, externally glazed with hand-applied putty

Cords & weights

Box SashPeriod

44mm

No

4mm single glazed
Heritage vacuum glass

True solid glazing bars, externally glazed with hand-applied putty

Cords & weights

Spring BalanceClassic

56mm

Yes

4-16-4 · 24mm DGU

Face-applied glazing bars, internally beaded

Spring balance mechanism

Spring BalanceClassic

50mm

Yes

4-6-4 · 14mm DGU
4-12-4 · 20mm DGU
Vacuum glass

Face-applied glazing bars, internally beaded

Spring balance mechanism

Spring BalanceClassic

73mm

Yes

4-14-4-14 · 40mm triple glazed

Face-applied glazing bars, internally beaded

Spring balance mechanism

Spring BalanceConservation

50mm

No

Slimline double glazing4-4-4 · 12mm DGU
4-6-4 · 14mm DGU
Heritage vacuum glass

True solid glazing bars, externally glazed with hand-applied putty

Spring balance mechanism

ARCHITECTURAL WINDOWS, DOORS & STAIRCASES

+44 (0) 7479 203696

hello@lancetworks.co.uk