4Edge Pro is Standard Patent Glazing Company's most advanced and thermally-efficient structural timber roof glazing system. Made from thermally-broken aluminium, it is designed for high weather resistance and energy efficiency. Secures glass on all four sides with dry-sealed transom mullions, supporting single, double or triple glazing from 6 to 50mm. Compatible with multiple glazing bar systems and suitable for pitches from 5° to vertical.

  • Structural roof glazing system for timber applications with advanced thermal performance

  • Secures infill materials on all four sides using dry-sealed mullions

  • Eliminates need for weathering tapes or silicone sealants

  • Supports glass thicknesses from 6 to 50mm

  • Compatible with Skyline Box, Skyline, Rafterline and Traditional glazing bars

  • Concealed fixings for a clean appearance

  • Meets Building Regulation Document L for energy efficiency

  • Suitable for large spans without rafter limitations

Applications

  • Modern and traditional roof glazing projects

  • Timber-framed rooflights and skylights

  • Sloped and vertical glazing installations

  • Commercial and residential buildings

  • Architectural features requiring seamless glass integration

Performance

Overall U Value of 1.35 W/m²K with high-performance double glazing

Supports pitches from 5° to vertical

Accommodates glass thicknesses from 6 to 50mm

Materials

Thermally-broken extruded aluminium

Options and variations

Single, double or triple glazing configurations

Plain or ornate snap-on cappings

Installation

Requires supporting structure free from twist and accurately aligned

Not suitable for shallow rebates in refurbishment projects

Not compatible with proprietary skylight systems

Accreditations

Compliant with Building Regulation Document L