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Sash windows that keep the period, lose the draughts

Vertical sliding sashes with the proportions your house was built with — and modern balances, seals and glazing hidden inside them.

  • Traditional sightlines with sealed double glazed units
  • Brush and compression seals stop the rattle and the draught
  • Tilt-in sashes so upper floors can be cleaned from inside
Get a free quote01342 410079

East Grinstead showroom · covering Sussex, Surrey and Kent

White sliding sash windows with Georgian bars on a colonnaded house in Sussex

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From 149 verified customer reviews

Certass registered

Fully insured and SafeContractor approved

10 year guarantee

On every product we supply and install

Family run since 2007

Our own fitters — never subcontracted out

Why sash

Some houses were designed around them

A tall opening with a meeting rail across the middle is a specific look, and casements can’t fake it.

Georgian, Victorian and Edwardian houses were built with sliding sashes and the rhythm of the elevation depends on them. Swap them for side-hung casements and the whole front of the house shifts, even if you can’t say why.

What has changed is everything you can’t see: compact balances instead of cords and weights, sealed units instead of single panes, brush seals instead of bare timber. You keep the look and lose the cold, the rattle and the repainting.

  • Spiral or spring balances instead of cords and weights
  • Sealed double glazed units, including slim options
  • Georgian bars, run-through horns and traditional detailing
  • Available in timber and in uPVC finished to look the part
Tall traditional multi-pane windows on a rendered period homeBay window and front door of a period home lit from inside at dusk

Benefits

What a modern sash window gives you

  • Right for the building

    Keeps the vertical proportions and meeting rail a period elevation depends on.

  • Controllable ventilation

    Open top and bottom together to draw cool air in and warm air out.

  • No more rattling

    Brush and compression seals hold the sashes snug in the frame.

  • Tilt to clean

    Pivot each sash inwards to reach the outside face from inside the room.

  • Nothing swings out

    Sashes slide within the frame, so nothing projects over a path or a neighbour.

  • Modern security

    Sash locks and restrictors, rather than a single catch on the meeting rail.

Ventilation

The trick most people forget

A sash window has one genuinely useful advantage over a casement, and hardly anyone uses it.

Open the bottom sash a little and the top sash a little at the same time. Cool air is drawn in low, warm stale air escapes high, and the room turns over without a gale blowing through it. On a warm evening it works noticeably better than opening one casement wide.

It’s also the safer way to ventilate a child’s bedroom — you can open the top sash only and fit a restrictor, leaving nothing at floor level for small hands.

Red brick period home with white replacement bay and casement windows

Materials

Timber or uPVC sash windows

Timber for authenticity and conservation work, uPVC where you want the look with minimal upkeep.

White uPVC casement windows fitted to a rendered house

uPVC Windows

The most popular choice: warm, secure and virtually maintenance free, in a wide range of colours and woodgrain finishes.

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Cream framed windows in a traditional cottage looking onto the garden

Wooden Windows

Real timber for period and conservation properties, engineered and factory-finished so it stands up to the weather.

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Run of anthracite grey aluminium windows in a brick barn conversion

Aluminium Windows

Slim, strong frames that carry more glass and less frame — ideal for extensions, large openings and contemporary homes.

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Buying online? Our shop is on its way

Sash windows are made to each opening and to the detailing of your property, so they’re a survey job rather than a basket one. Send us photos and sizes to get started.

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Questions

Sash window questions

Can’t see what you need? Call 01342 410079 and we’ll answer it properly.

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How does a modern sash window work?

The two sashes slide vertically past each other in the frame. Traditional windows used cords, weights and a pulley hidden in the box frame; modern replacements use spiral or spring balances instead, which are compact, quieter and don’t need re-cording every few decades.

Can sash windows be double glazed?

Yes. Sealed double glazed units are standard in replacement sash windows now. Slim units are available where the sightlines need to stay narrow to keep the proportions of a period property.

Do modern sash windows still rattle and let draughts in?

No — that’s the biggest practical improvement. Brush and compression seals run around the sashes so they stay snug in the frame, which stops both the draughts and the rattling that older sashes are known for.

Can the sashes tilt in for cleaning?

On most modern sash windows, yes. A tilt facility lets you pivot each sash inwards to clean the outside face from inside the room — a significant help on first and second floors.

Are sash windows allowed in conservation areas?

Replacing sash windows with sash windows is usually the point — swapping them for casements is what tends to cause problems. Listed buildings and conservation areas each have their own requirements, so check with your local authority. Where the originals must stay, secondary glazing is often the answer.

Where we work

Sash windows in East Grinstead and across Sussex, Surrey and Kent

We’re based on Station Road in East Grinstead, where West Sussex meets Surrey and Kent, and our own team works throughout all three counties.

Check we cover your area

Towns we cover include

  • East Grinstead
  • Crawley
  • Horley
  • Haywards Heath
  • Burgess Hill
  • Horsham
  • Crowborough
  • Tunbridge Wells
  • Tonbridge
  • Sevenoaks
  • Redhill
  • Reigate
  • Caterham

…and the villages in between. If you’re in Sussex, Surrey and Kent, the answer is almost certainly yes.

Free quotations

Get a price for sash windows

Book a free survey and we’ll assess the openings, the detailing and any conservation constraints before quoting.

Request a free quote01342 410079

Mon–Fri 9am–5pm · Sat 10am–1pm