🔲 Secondary Glazing in Bridport, Dorset

Looking for professional secondary glazing in Bridport? S&K Group delivers expert secondary glazing services to homes and businesses throughout Bridport and the wider Dorset area.

Professional secondary glazing installation for noise reduction, thermal insulation and draught-proofing. Ideal for listed buildings and conservation areas. We combine decades of expertise with premium materials and competitive pricing — backed by comprehensive guarantees on every installation.

What Is Secondary Glazing?

Secondary glazing is a supplementary window system installed on the room side of your existing windows. It creates an insulating air gap between the original window and the secondary panel, dramatically improving thermal insulation, noise reduction and draught elimination — without altering the external appearance of your property.

Why Choose Secondary Glazing?

Listed buildings: Preserves original windows — typically the only glazing upgrade permitted by conservation officers
Conservation areas: No external changes visible
Noise reduction: Reduces external noise by up to 80% (45dB reduction) — far more effective than standard double glazing
Thermal insulation: Reduces heat loss through windows by up to 65%
Draught elimination: Sealed perimeter gaskets stop cold air infiltration
Condensation reduction: Warmer inner pane reduces condensation
Security: Additional barrier with lockable options
Cost-effective: 50-70% less expensive than full window replacement

Panel Types

Type	Operation	Best For
Horizontal sliding	Panels slide side to side	Most common — easy access to original window
Vertical sliding	Panels slide up and down	Sash windows — maintains original operation style
Hinged casement	Panel swings open on hinges	Casement windows — full access for cleaning
Lift-out	Panel lifts out of frame	Windows rarely opened — maximum simplicity
Fixed	Permanently sealed	Fixed lights where access isn't needed

Glass Options

Standard float glass: 4mm or 6mm — basic thermal improvement
Toughened safety glass: 4mm or 6mm — required at low level (below 800mm)
Laminated acoustic glass: 6.4mm or 8.8mm — maximum noise reduction
Low-E glass: Reflects heat back into the room — best thermal performance
Combination: Laminated acoustic + Low-E — ultimate noise and thermal performance

Secondary Glazing Costs

Window Size	Standard	Acoustic
Small (up to 1m²)	£200 – £350	£300 – £500
Medium (1-2m²)	£300 – £550	£450 – £750
Large (2-3m²)	£450 – £750	£650 – £1,000
Sash window (typical)	£350 – £600	£500 – £850

Prices per window including survey, supply, installation and VAT.

Secondary Glazing vs Double Glazing

Feature	Secondary Glazing	Double Glazing
Noise reduction	Up to 80% (superior)	Up to 60%
Thermal improvement	Good (65% heat loss reduction)	Excellent (75% heat loss reduction)
Listed building suitable	Yes ✓	Usually no ✗
Original windows preserved	Yes ✓	No — replaced ✗
Typical cost per window	£200-£750	£400-£1,200
Installation disruption	Minimal (1-2 hours per window)	Moderate (scaffolding may be needed)
Planning permission	Rarely needed	May be needed in conservation areas

FAQ

Will secondary glazing stop condensation?

Secondary glazing significantly reduces condensation on the original window by keeping the inner pane warmer. The air gap between the two windows should be at least 100mm for best results, with the secondary panel well-sealed to prevent warm moist room air entering the cavity.

Can I still open my original windows?

Yes. Sliding and hinged secondary glazing panels provide easy access to your original windows for ventilation and cleaning. Lift-out panels can be removed entirely when needed.

How effective is secondary glazing for noise?

Secondary glazing is the most effective glazing solution for noise reduction — outperforming standard double glazing. With an optimal air gap (100-200mm) and acoustic laminated glass, reductions of 40-45dB are achievable. This transforms a noisy room into a peaceful one.