Architectural Systems
PVC Window and Door Systems
PVC systems insulate through chamber geometry rather than through an inserted break, which makes them efficient in cold climates and cost-sensitive residential programmes.
What it is
A PVC system uses multi-chamber extruded profiles, steel or composite reinforcement and compression sealing to form the window or door frame.
Reliance sources reinforced PVC systems where thermal performance and cost efficiency matter more than the long spans aluminium allows.
Where it is used
- —Cold-climate residential envelopes
- —Multi-family and volume residential programmes
- —Retrofit and replacement work
- —Projects with demanding thermal targets and moderate opening sizes
What it resolves
Chambered PVC profiles interrupt heat flow through the frame without an inserted thermal break, which supports low-energy envelope targets.
Reinforcement and hardware selection determine how the system behaves at larger sizes and over long service life.
Configurations
Tilt-turn windows
Dual-action operation with multi-point locking and compression sealing.
Casement and fixed units
Standard and specialty geometry within the profile system's size limits.
Sliding and lift-and-slide doors
PVC door assemblies for terrace and balcony openings.
Specification considerations
- —Chamber count and profile depth relative to the thermal target
- —Reinforcement specification for the sash size and wind load
- —Colour, lamination and UV exposure
- —Size limits before aluminium becomes the correct choice
- —Hardware duty class relative to sash weight
Standards and documentation
Thermal and structural performance is system-specific and documented by the manufacturer. Reliance requests documentation for the exact profile system and configuration rather than quoting generic values.
How Reliance supports supply
- —Profile system selection against thermal and size requirements
- —Manufacturer evaluation and documentation review
- —Inspection coordination before shipment
- —Packing, consolidation and delivery coordination