Using your loft after ECO4 loft insulation: a storage and boarding checklist for UK households (2026)

Guide by ApplyFreeBoiler.uk (Reliant Energy Solutions Ltd), a heating and insulation installer in Bury, Greater Manchester. We are not the government, Ofgem or an energy supplier.

Loft insulation is one of the most common measures fitted under ECO4. Many households then ask whether they can still use the loft for storage. You usually can, but how you do it matters, because squashed insulation keeps less heat in and poor airflow can lead to condensation. This checklist is general information from ApplyFreeBoiler.uk, a heating and insulation installer in Bury, and does not guarantee funding.

1. Ask what was installed and how deep it is

Before the installer leaves, ask what depth of insulation went in and whether any area was left clear for access or storage. Keep the paperwork, as it helps if you later want boarding added or sell the home.

2. Do not lay boards straight onto the insulation

Putting boards or heavy boxes directly on top of loft insulation compresses it and reduces how well it works. If you want a boarded area, ask about raised loft legs or a raised platform that sits above the insulation with an air gap underneath.

3. Keep the eaves and vents clear

Lofts need airflow to stay dry. Make sure insulation and stored items are not blocking the vents or gaps at the eaves, where the roof meets the walls. Blocked ventilation can lead to condensation and damp on the roof timbers.

4. Insulate the hatch too

An uninsulated loft hatch lets warm air escape into the loft. Ask whether the hatch can be insulated and draught-stripped so it closes snugly.

5. Take care with pipes, tanks and wiring

Insulation should go over most of the loft floor, but pipes and water tanks in the loft need their own lagging so they do not freeze, and electrical wiring and downlights need to be treated with care. Ask the installer how they dealt with these.

6. Walk on the joists, not the insulation

If you need to go into the loft, step only on joists or boards and use a light. Loft insulation material can irritate skin, so wear gloves and long sleeves if you are moving it.

7. Check funding and local figures

See ECO measures by council on ApplyFreeBoiler.uk, built from DESNZ Household Energy Efficiency statistics, to see how many ECO measures have been installed in your local authority area. Use the ApplyFreeBoiler.uk eligibility check to see whether an ECO4 heating or insulation pathway may be available for your home in England, Scotland or Wales. ECO4 is due to close on 31 December 2026.