Thurcroft · S66
Sash window glazing in Thurcroft, Rotherham
If your Thurcroft property has two vertically sliding sashes running in a boxed frame, usually with a horn detail on the upper sash, this page is the specification we would quote. The local brief in S66 is usually single-glazed landings and cold bedrooms in colliery stock, and the draught through the weight pockets is sealed and the original sash keeps operating normally. Thurcroft is not a conservation area, so the decision is purely technical rather than a consent question. Many of these calls come shortly after purchase, when the first winter has made the window problem obvious. We cover S66 continuously — Thurcroft sits within reach of the Parkway (A630), which is also the reason a lot of these calls are about noise.
What goes in, and why
| Window type | two vertically sliding sashes running in a boxed frame, usually with a horn detail on the upper sash (Georgian, Victorian and Edwardian, roughly 1750–1910) |
|---|---|
| Underlying problem | the sash box is hollow and the counterweight pockets leak air, so the loss is around the window as much as through it |
| System we fit | vertical sliding secondary units that mirror the original movement |
| Glass specification | 4 mm Low-E for thermal-led jobs, 6.4 mm laminated where noise is the driver |
| Measurement | we measure the reveal at three heights because sash openings are rarely square after a century of settlement |
| Heritage position | nothing is fixed into the sash box itself — the frame is fixed to the reveal lining, so historic joinery is untouched and the work is reversible |
A whole-house residential install is normally completed within a single working day.
Listed-building drawings and specifications are prepared free with the quote where consent is needed.
Thermal figures quoted are whole-window, not centre-pane, which is the honest way to state them.
We survey with a sound level meter where noise is the driver, so the target is a number rather than an impression.
Local detail that changes the job
A sash box is a ventilated void by design; most of the perceived draught comes through the pulley stiles rather than through the glass.
Matching the secondary unit's movement to the original means the window still behaves like a sash from inside the room, which matters in a period interior.
Thurcroft stock is 1920s colliery housing and the prevailing glazing is casements, mostly replaced, which is why sash window glazing comes up here so often.
We measure the reveal at three heights because sash openings are rarely square after a century of settlement.
Thurcroft carries no conservation designation, so the specification is decided on performance alone.
Order of work
- Step 1
Send a photo of the window — with two vertically sliding sashes running in a boxed frame we can usually tell you the likely system before we visit.
- Step 2
Survey in Thurcroft: we measure the reveal at three heights because sash openings are rarely square after a century of settlement.
- Step 3
Manufacture to the templated sizes with your chosen finish.
- Step 4
Room-side install with no external access and no alteration to the original frame.
Recent installs nearby
Moorgate HMO security retrofit
Ground-floor sashes across four HMO units fitted with key-lock hinged units to meet the licensing conditions.
Nether Edge Grade II sash retrofit
Six original box sashes fitted with balanced vertical secondary sliders — full listed-building consent secured in six weeks.
Ecclesall Road bay-window sound retrofit
Three-panel horizontal sliders across a 3.2 m Edwardian bay — Rw measured at 47 dB post-install.
Other window types in Thurcroft
Sash window glazing in nearby areas
Local reference points
- Area
- Thurcroft (S66)
- Town
- Rotherham, South Yorkshire
- Housing era
- 1920s colliery housing
- Typical windows
- casements, mostly replaced
- Landmark
- Thurcroft Miners Welfare
- Conservation area
- No
- Window style
- Sash Windows
- Period
- Georgian, Victorian and Edwardian, roughly 1750–1910
Sash window glazing in Thurcroft — the short version
The sash box is hollow and the counterweight pockets leak air, so the loss is around the window as much as through it. We fit vertical sliding secondary units that mirror the original movement with 4 mm Low-E for thermal-led jobs, 6.4 mm laminated where noise is the driver, templated to your opening. The draught through the weight pockets is sealed and the original sash keeps operating normally.
Common questions
Will secondary glazing stop my sash windows rattling?
Yes, and it does it without touching the sash. The rattle is wind pressure moving a loose sash in its box, and a sealed room-side pane removes the pressure differential driving it.
Can I still open the sash behind it?
Yes. Vertical sliding secondary units move on the same axis, so both sashes stay operable.
Does it damage original joinery?
No. The fixing is into the reveal lining, not the sash box, and the whole system can be removed later without trace.
Which windows should we do first?
Whichever room you sleep or work in that faces the noise or the prevailing weather. We will say so honestly at survey rather than quoting the whole house by default.
Is it worth it if we might replace the windows later?
If replacement is likely within two years, usually not — we will tell you. If the frames are staying, secondary glazing is the cheaper route to the same comfort.
Just moved in?
We will tell you which windows are worth treating first and which can wait — no pressure to do the lot. Send a photo of the sash window glazing — with two vertically sliding sashes running in a boxed frame in a 1920s colliery housing Thurcroft property we can usually spec it before we visit.