Loft hatch replacement: insulated, larger and better placed

The loft hatch is easy to overlook, but it affects how warm your home is and how usable the loft is. This guide covers why you might replace a hatch, the options, and what is involved when a hatch is enlarged or moved.

Why replace a loft hatch?

• Heat and draughts: an uninsulated hatch that does not seal can let warm, moist air into the loft.
• Size: a small hatch makes it hard to get boxes, cases and a ladder through.
• Position: a hatch over a stairwell or in a cramped spot can be awkward and less safe to use.
• Fitting a ladder: many loft ladders come with their own hatch and frame.

Insulated and draught-sealed hatches

Modern hatches are available with insulation built into the door and seals around the frame. The Centre for Sustainable Energy suggests draught-proofing strips around the edge of the hatch when insulating a loft. Some hatches are push-up doors; others drop down and carry a folding ladder.

Enlarging a hatch

To enlarge a hatch, part of a ceiling joist usually has to be cut away. Ceiling joists support the ceiling below and, in many roofs, help stop the roof spreading, so the cut joist must be carried by trimmers fixed to the joists either side. The ceiling around the new opening is then made good. Trussed rafters, common in newer homes, must not be cut or altered without a structural engineer's advice.

Moving a hatch

Moving a hatch involves the same work as enlarging one, plus closing up the old opening and making good the ceiling. It is worth considering if the current hatch is in an awkward place, such as directly above the stairs.

Fire safety in flats

In some buildings, such as flats, the hatch may need to meet fire safety requirements. If you live in a flat, check with your freeholder or managing agent before changing a hatch.

What we do

We fit insulated, draught-sealed hatches, and enlarge or move hatches where the roof structure allows. We check joists, trusses and the space for any ladder at the survey. See loft hatches and insulation and loft ladder fitting.

Common questions

Can any loft hatch be enlarged?

Many can, but it depends on the roof structure. Trussed rafters must not be cut without a structural engineer's advice. We check at survey.

Is a new hatch worth it without a ladder?

An insulated, draught-sealed hatch can help reduce heat and moisture loss into the loft, with or without a ladder.

How long does it take to fit a new hatch?

It depends on whether the opening changes size. We confirm timings at the survey.

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Areas we cover

Bromley | Orpington | Beckenham | Chislehurst | West Wickham | Hayes, Bromley | Petts Wood | Biggin Hill