pre-1837
Secondary Glazing for Stone Cottage
Stone Cottage stock across South Yorkshire dates from the pre-1837 — stone-mullioned casements that were never designed for modern noise or thermal targets. Peak-fringe stone cottages have windows that pre-date modern draughtproofing by centuries — the mullions themselves are the weak point.
Why stone cottage owners choose secondary glazing
For exposed Peak-edge locations we spec compression seals and heavier profile weights to resist wind pressure.
Every cottage window is templated because no two mullioned openings share the same dimensions.
Hinged units are almost always the right answer — the deep reveals mean a slider has nowhere to go.
Recommended: Thermal Insulation
cut heat loss through the window by up to 65%
U-values from 1.868 W/m²K
A properly sealed secondary glazing unit with Low-E soft-coat glass reaches U-values as low as 1.868 W/m²K — comfortably meeting current retrofit building-regs requirements.
Recent installs nearby
Cawthorne conservation cottage
Stone-mullioned casements retained with room-side hinged secondary units — listed-building consent achieved without alteration.
Edgerton stone-mullioned villa
Whole-house retrofit of hinged secondary units behind original mullioned casements. U-value 1.94 W/m²K on tested rooms.
Dore Village Grade II cottage
Stone-mullioned casements retained; hinged units templated to the deep reveals in Vision HD satin white.
Local reference points
- Era
- pre-1837
- Typical window
- stone-mullioned casements
- Top problem
- wind-driven rain and heat loss through mullions
- Recommended service
- Thermal Insulation
- Recommended product
- hinged units
- Performance
- U-values from 1.868 W/m²K
Prefer to talk it through?
Give us five minutes on the phone and we'll steer you to the right specification.
Common questions
What U-value can secondary glazing achieve?
As low as 1.868 W/m²K with Low-E soft-coat glass and a 100 mm cavity — comfortably meeting current retrofit building-regs targets.
How is the quote calculated?
We survey and template every opening on site, then quote in writing per opening — no per-square-metre pricing that hides oversize charges.
How long does an install take?
A typical whole-house residential install is a single day; larger commercial jobs are phased so trading isn't interrupted.
Is there a warranty?
Yes — 10 years on the manufacture and installation, and a manufacturer's warranty on the glass units.
What's the impact on natural light?
Minimal — the second pane is optically clear and slim-line frames sit within the original reveal so no daylight is lost.
Next step for stone cottage owners
Send us photos of one or two windows and we'll come back with a written quote and a spec sheet you can compare against replacement double glazing.