Chelmsford sits squarely in our Essex coverage area for opening & vented roof lanterns — which means fast made-to-measure quotes, kerbside delivery for trade and DIY orders, and installation slots with our own teams.
Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed
Around Chelmsford and the wider county, housing stock runs to 1930s semis, new-build estates and barn conversions — large bifold-plus-lantern rear extensions are the dominant project type. We've specified and supplied for exactly these property types across Essex, so recommendations come from real local precedent.
Every lantern is thermally broken aluminium as standard, glazed with 28mm argon-filled units, and available with self-clean and solar-control coatings. Supply-only orders include kerb specifications and fitting documentation; installed projects carry our written workmanship guarantee on top of the 10-year product cover.
Chelmsford, Harlow, Braintree and Clacton-on-Sea and the rest of Essex all sit inside standard coverage: free surveys, free quotes, and a response within 1 working hour.
Your choice: a simple wall switch, a remote, app control, or full automation that opens on temperature and closes on rain. Most kitchens land on switch-plus-rain-sensor.
Not in a quality system — the sash closes onto continuous gaskets and locks down tight. The vent panes carry the same glazing spec and guarantee as the fixed glass around them.
Over kitchens and in south-facing rooms, emphatically yes — venting at the highest point purges heat and steam faster than any window can. In cooler, well-ventilated rooms a fixed lantern plus good doors often suffices.
The rain sensor closes it automatically — it's a standard part of the package, not an optional extra, so an open vent and a surprise shower never meet.
We do. Chelmsford and the surrounding Essex towns are core territory for both our installation teams and our supply-only delivery routes.
For Chelmsford: same-day made-to-measure quotes, standard sizes delivering in around 7–10 working days, and installation slots booked to suit once the survey's done.
Send the form and we’ll come back with honest prices — supply-only or installed — with a response within 1 working hour.
Prefer to talk? Call 0800 088 6248 or WhatsApp · sales@lantern-roof.com