Vertical Sliding Secondary Glazing
Counterbalanced vertical sashes designed to mirror the movement of your original window — the heritage-appropriate choice for period property.
Weighted, effortless movement
Concealed spring balances take the weight of the glass so the sashes lift with one finger and stay exactly where you leave them. No cords, no chains, no visible mechanism.
- Concealed spring balances
- Both sashes fully operable
- Sashes tilt in for cleaning
- Suits openings up to 2.4m high
Heritage aesthetics
Slim aluminium sight-lines that sit discreetly behind the original sash — completely reversible and approved for use in listed buildings and conservation areas across South Yorkshire.
Acoustic and thermal performance
Upgrade to 6.4mm acoustic laminated glass for up to 80% noise reduction — ideal for townhouses on busy roads. Low-E glass keeps rooms warmer in winter and cooler in summer.
- Approved for listed buildings
- Acoustic upgrade available
- Low-E thermal glass
- White, black, or 200+ RAL colours
Ready for a free, no-obligation quote?
South Yorkshire's specialists in secondary glazing — survey, measure, manufacture and install.