Harlow · Essex
Glass Roofs in Harlow
Basements and lower floors in Harlow can borrow daylight from above through walk-on glass floor panels and rooflights set into a terrace or pavement-level roof.
- CM17
- CM18
- CM19
- CM20
- Guide from £1,095 per m²
Structural glass roof in Harlow
Fixed frameless rooflights sit on a flat roof upstand with the glass edge overhanging the kerb, so from inside you see only sky and plaster. The upstand must be level, insulated and weathered into the roof covering, and the roof needs a fall so water drains off the glass.
A new glass roof or walk-on panel is building work that normally needs building regulations approval through building control, covering structure, energy performance and, close to a boundary, fire performance. Planning permission may also be needed depending on the extension and the property, so check with the council.
Overhead glass collects heat in summer. Solar-control coatings, low-E coatings and fritted patterns reduce heat and glare under south and west-facing roofs, while opening rooflights or vents elsewhere help warm air escape. Self-cleaning outer coatings reduce how often the glass needs washing.
In England, Approved Document L sets a limiting U-value of 2.2 W/m²K for rooflights, calculated in the horizontal position. Frameless glass roofs and fixed rooflights are usually specified with low-E double or triple glazed units, and their declared performance should be checked against this before ordering.
What's included
- Lifting, positioning and fixing of every glass unit
- Site survey and structural assessment of supports
- Written guarantee terms and manufacturer documentation
- Coordination with engineers or builders where required
Working in Harlow
- Postcodes covered
- CM17, CM18, CM19, CM20 and the surrounding area, including Hoddesdon, Bishops Stortford and Waltham Abbey
- Coast
- Harlow is well inland, around 38 km from the nearest coast, so salt exposure is not usually a factor.
- Daylight and sun
- In Harlow the midwinter sun reaches about 15° above the horizon at noon, with roughly 7.5 hours of daylight, rising to about 62° and 16.5 hours in midsummer. Overhead glass admits far more daylight than vertical glazing, especially in summer when the sun is high. South-facing glass roofs usually need solar-control coatings or fritting, while north-facing roofs can use clearer low-E glass to maximise winter light.
- Access and setting
- City glass roofs often need cranes or lifting robots, so road or pavement licences, parking suspensions and access over neighbouring property may be needed. Side returns usually sit on a boundary, so fire performance and neighbour matters should be checked early.
- Rules in England
- Approved Document K requires safety glass in critical locations in England: glazing in doors and in side panels within 300 mm of a door, up to 1500 mm above floor level, and any glazing in walls or partitions up to 800 mm above floor level.
Guide prices in Harlow
| Typical job | Guide price inc VAT |
|---|---|
| Frameless glass roof, per m² | £1,095 – £1,795 |
| Walk-on glass panel, per m² | £1,495 – £2,395 |
Get a guide price for your size
In England, replacing a whole window, roof window or glazed external door is building work. It has to be notified to building control, either by an installer registered with a competent person scheme such as FENSA or Certass, or through a building notice to the council. Replacing only the glass in an existing frame is a repair and is not notifiable.
Options to choose between
Sliding access rooflight
A glazed hatch that slides or hinges open for access to a roof terrace, with weather seals and secure locking.
Glass floor panel
Laminated glass floor sections that let light through to a basement or lower floor, supported on a level, engineered frame.
Glass beams and fins
Laminated glass supporting beams instead of steel, keeping the whole roof transparent where spans and loads allow.
Glass Roofs in Harlow: questions
What is the difference between a glass roof and a roof lantern?
A glass roof replaces most or all of a roof with large structural glass units on minimal supports, giving a near frameless view of the sky. A roof lantern is a framed, pitched glazed structure that sits on an upstand within a solid flat roof. Glass roofs suit side returns and link extensions; lanterns suit openings in flat roofs.
Is a glass roof safe if the glass breaks?
A properly specified glass roof is designed so that a broken pane stays in place. The inner pane is laminated, so fragments remain bonded to the interlayer instead of falling into the room. The glass thickness, supports and edge details are designed for the expected loads, including snow, wind and maintenance access.
How much does a glass roof cost?
The cost of a glass roof depends on the area of glass, the size of each unit, the glass make-up and coatings, the support beams or framing, the structural design and the access for lifting. Walk-on and very large panes cost more because of their thickness. See the guide prices for typical ranges; the written quote fixes the price.
Do I need planning permission for a glass roof extension?
It depends on the extension and the property. Some single-storey extensions on houses fall under permitted development, while others need planning permission. Flats, listed buildings and homes in conservation areas or under Article 4 directions have additional controls. Check with your council or an architect early, before the glass is ordered.
Do you cover Harlow for glass roofs?
Yes. We can quote for glass roofs across Harlow and the surrounding Essex area, including postcode districts CM17, CM18, CM19 and CM20, and nearby Hoddesdon, Bishops Stortford and Waltham Abbey. Start with your postcode on the quote form and a glazier will arrange a free survey before giving you a written quote.
Get a written quote in Harlow
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.