Swallownest · S26
Sash window glazing in Swallownest, Rotherham
If your Swallownest 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 S26 is usually heavy through-traffic noise on the A57 corridor, and the draught through the weight pockets is sealed and the original sash keeps operating normally. Swallownest is not a conservation area, so the decision is purely technical rather than a consent question. Mixed residential and commercial use around here means out-of-hours fitting is common and we quote for it as standard. Coverage runs across Rotherham and the surrounding S60, S61, S62 districts, with Swallownest (S26) among the areas we survey most often.
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 |
One survey, one fitting team, no subcontracted installers.
Aluminium systems are powder-coated to any RAL colour at no extra lead time.
We survey with a sound level meter where noise is the driver, so the target is a number rather than an impression.
Measured performance figures come from our own post-install testing, not manufacturer maximums.
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.
Swallownest stock is interwar and post-war housing and the prevailing glazing is casements and PVCu, 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.
Swallownest carries no conservation designation, so the specification is decided on performance alone.
What happens next
- 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 Swallownest: 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.
Sash window glazing in nearby areas
Local reference points
- Area
- Swallownest (S26)
- Town
- Rotherham, South Yorkshire
- Housing era
- interwar and post-war housing
- Typical windows
- casements and PVCu
- Landmark
- Swallownest crossroads
- Conservation area
- No
- Window style
- Sash Windows
- Period
- Georgian, Victorian and Edwardian, roughly 1750–1910
Sash window glazing in Swallownest — 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.
Can you work outside trading hours?
Yes. Evening, weekend and phased installs are routine and are priced into the quote rather than added later.
What about fire escape and means of escape windows?
Escape openings get hinged or lift-out units with a compliant catch, specified on a per-opening basis at survey.
Fitted around your trading hours
Evening and weekend installs are standard for us — tell us the access window and we will work to it. Send a photo of the sash window glazing — with two vertically sliding sashes running in a boxed frame in a interwar and post-war housing Swallownest property we can usually spec it before we visit.