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Flat Roof Lanterns in St Albans

We've made flat roof lanterns straightforward for St Albans: order supply-only with delivery to your door, or book our fitting teams and have the whole project — survey to seal — handled for you.

Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed

Aluminium roof lantern flooding a kitchen extension with daylight
10-Year GuaranteeFree Survey & QuotesSupply-Only Prices OnlineUK-Wide Delivery & FittingMade to Measure
St Albans · Hertfordshire

Built for St Albans homes

The Hertfordshire market is defined by garden-city housing, 1930s semis and a fast-moving extension market across the commuter towns — and our St Albans installs reflect that, with specifications matched to the property rather than pulled off a shelf.

Specification doesn't change with postcode: thermally broken frames, 28mm argon-filled glazing, marine-grade powder coating and a 10-year guarantee, whether you buy supply-only for your own builder or book our installation teams.

Our teams cover St Albans alongside Letchworth, Hertford and Bishop's Stortford and the rest of Hertfordshire — surveys are free, quotes carry no obligation, and we aim for a response within 1 working hour.

At a glance

  • Exact kerb specs issued at order
  • 150mm minimum upstand detailing
  • EPDM, GRP & felt junction guidance
  • Continuous-seal lantern bedding
  • Internal plaster reveal details
  • Works on new & existing flat roofs
  • Supply-only with junction drawings
  • Installed with junction included
It costs nothing to price the job: free survey, free quote, response within 1 working hour.
Buy online — supply only

Supply-only roof lanterns, delivered UK-wide

Standard sizes below — made to measure quoted same day. Installation available nationwide if you’d rather we fit it.

1000 × 1500mm

Thermally broken aluminium · self-clean & solar glass options · 7–10 working days

Supply-only price list being finalised — request today’s price or call 0800 088 6248 for an instant figure.
Full specification →
1000 × 2000mm

Thermally broken aluminium · self-clean & solar glass options · 7–10 working days

Supply-only price list being finalised — request today’s price or call 0800 088 6248 for an instant figure.
Full specification →
1200 × 1200mm

Thermally broken aluminium · self-clean & solar glass options · 7–10 working days

Supply-only price list being finalised — request today’s price or call 0800 088 6248 for an instant figure.
Full specification →

See all supply-only sizes & prices

Flat Roof Lanterns in St Albans — common questions

EPDM, GRP or felt — does the lantern care?

The lantern doesn't, but the junction detail differs: EPDM wraps the kerb, GRP laminates onto it, felt is torch-dressed. We supply the right drawing for each.

Why do flat-roof lanterns sometimes leak?

Almost always the junction, not the lantern — short upstands, membrane finished under rather than over the kerb, or missing seals. Build the kerb right and dress the membrane right, and the assembly is dependable for decades.

What upstand does a flat-roof lantern sit on?

A timber kerb at least 150mm above the finished roof surface, built to the lantern's external footprint. We issue exact dimensions at order so it's ready before the lantern arrives.

Who waterproofs the junction — you or my roofer?

On installed projects, we coordinate it: the roofer dresses the membrane over the kerb, we bed and seal the lantern onto it. Supply-only orders include junction drawings for EPDM, GRP and felt so your roofer details it correctly.

Do you cover St Albans for installation?

Yes — St Albans is inside our standard Hertfordshire coverage. Our fitting teams survey and install throughout the area, and supply-only deliveries run to St Albans on dedicated glass transport.

What's the lead time for St Albans?

Stocked standard sizes typically deliver to St Albans within 7–10 working days; made-to-measure fabrication adds to that, and we confirm the slot when you order so it lands with your build programme.

Free quote

Tell us about your project

Send the form and we’ll come back with honest prices — supply-only or installed — with a response within 1 working hour.

  1. Send your enquiry — thirty seconds, no obligation.
  2. We call you back — response within 1 working hour to talk sizes and options.
  3. Fixed quote — supply-only price or installed price after a free survey.
  4. You decide — no pressure, no follow-up hounding.

Prefer to talk? Call 0800 088 6248 or WhatsApp · sales@lantern-roof.com

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