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Install glass internal doors.
Frameless, framed or pivot glass doors — for open-plan living rooms and feature spaces.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
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Four moves that separate a smooth job from a nightmare.
Wrong glass spec
Untrained fitters install toughened glass where laminated is required — this is a Building Regs breach and an insurance risk.
Hinge stress fractures
Heavy glass on standard butt hinges develops micro-cracks at the bolt holes within 1–2 years. Use pivot or quality flush hinges.
Edge damage
Chipped glass edges spread into stress fractures. Inspect all edges before signing off the install.
Condensation
Glass doors between heated and unheated rooms (e.g. kitchen to porch) sweat on the cold face. Specify double-glazed glass for that scenario.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Frosted glass slab (single)P1A safety glass, stock sizes
£200–£500
Clear glass slab with timber frameOak or walnut
£250–£700
Crittall-style single paneBlack steel, industrial look
£400–£900
Crittall-style French pairHighly popular kitchen divider
£900–£2.2k
Frameless pivot systemFloor and ceiling pivot bearings
£800–£1.8k
Carpenter/glazier labourDay rate, two-person lift
£250–£500/day
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Quote spread is typically ± 18% — always get 3 quotes.
At a glance
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Glass internal doors maximise light flow between rooms — perfect for studies, kitchen-diners and dressing rooms. Options range from frosted single panes to crittall-style steel-framed pairs. Expect to pay £350–£2,400 fitted in the UK depending on style and frame.
What Does the Work Involve?
Glass doors are heavier than timber (15–35 kg per leaf for single, 40–60 kg for crittall-style pairs). The lining must be reinforced — flush-fit hardware and pivot hinges spread the load better than standard butt hinges. Glass panels are P1A laminated safety glass (BS 6206) — they don't shatter into pebbles. The frame is either steel (crittall-style) or hardwood; frameless glass uses pivot hardware top and bottom mortised into the floor and ceiling.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Frosted glass slab (single) | 200 | 500 | P1A safety glass, stock sizes |
| Clear glass slab with timber frame | 250 | 700 | Oak or walnut |
| Crittall-style single pane | 400 | 900 | Black steel, industrial look |
| Crittall-style French pair | 900 | 2,200 | Highly popular kitchen divider |
| Frameless pivot system | 800 | 1,800 | Floor and ceiling pivot bearings |
| Carpenter/glazier labour | 250 | 500 | Day rate, two-person lift |
How Long Does It Take?
Standard glass slab in existing lining: 4–6 hours. Crittall-style pair with new structural opening: 1–2 days. Frameless pivot system with mortised hardware: 1 day plus prep.
DIY or Professional?
Professional. Heavy glass slabs require two fitters and a glass-suction lifter for safety. Pivot mortices must be cut dead plumb — a 3mm error and the door binds permanently. Crittall-style frames need shimming to within 1mm.
Choosing the Right Tradesperson
For crittall-style, use a fitter who has installed steel-framed glass doors before — they have specific tolerances. For frameless, use a glazier with architectural-glass experience. Always insist on P1A laminated safety glass; cheap toughened glass is illegal in any door panel under BS 6206.
UK Regulations
Glazing in doors and side panels within 1500mm of finished floor level must be safety glass — P1A laminated to BS 6206 (Approved Document Part K). Toughened glass alone (Class A) is not sufficient where laminated is specified. Fire-rated glass doors (FD30) exist but require specific Pyrostop or Pyranova glass at 4–5x the cost.
Common Problems
- Wrong glass spec: Untrained fitters install toughened glass where laminated is required — this is a Building Regs breach and an insurance risk.
- Hinge stress fractures: Heavy glass on standard butt hinges develops micro-cracks at the bolt holes within 1–2 years. Use pivot or quality flush hinges.
- Edge damage: Chipped glass edges spread into stress fractures. Inspect all edges before signing off the install.
- Condensation: Glass doors between heated and unheated rooms (e.g. kitchen to porch) sweat on the cold face. Specify double-glazed glass for that scenario.
Frequently Asked Questions
Is crittall-style real steel?
Genuine Crittall is hot-rolled steel and very expensive. Most "crittall-style" UK doors are mild steel or aluminium painted matte black — they look identical at a fraction of the cost.
Do glass doors give privacy?
Frosted, reeded or stippled glass gives visual privacy while still letting light through. Switchable smart glass (electric privacy) exists but adds £800–£2,000 per leaf.
Are glass doors safe with children?
P1A laminated safety glass is required by Building Regs and will not shatter into shards even under impact. It's actually safer than a standard timber door in many ways — no splinters.
Are glass doors acoustic?
Single-pane glass doors leak sound. For acoustic isolation specify double-glazed glass doors (15–25mm overall thickness, two panes with an air gap) — acoustic rating 32 dB+.
Can a glass door be fire-rated?
Yes — FD30 glass doors using Pyrostop or Pyranova glass. Cost is 3–5x a standard glass door. Required only between a habitable room and integral garage, or some stair scenarios.
How heavy are glass doors?
A single 838 × 1981mm 8mm laminated glass slab is roughly 30–35 kg. A double-glazed unit is closer to 50–60 kg. Always plan for a two-person lift.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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