If you want to use your loft for storage you’ll need to ensure the joists are higher that 270mm in height.
This will allow the spaces between the joists to be filled with insulation and then be boarded over the top, whilst achieving the recommended depth of insulation.
It is strongly advised not to fit 270mm of mineral wool and squash it down with boarding or any other items, as this will reduce efficiency and be ineffective at insulating your home.
Instead, place mineral wool between the joists and then fit rigid insulation boards across the joists, with floorboards on top.
It is important to leave a small air gap between boards and the mineral wool in order to stop damp forming.
Remember that insulating between the joists will create a cold roof space as the heat is kept underneath the insulation like a blanket. Therefore, if you require a warm space for your storage it’s better to insulate between the rafters in the roof rather than the joists.
Funding for loft insulation
YES Energy Solutions can provide access to funding for loft insulation as well as industry accredited installers to complete installations.
Our friendly advisors can take you through the eligibility criteria to determine whether you can receive funds from the Government's Energy Company Obligation (ECO) scheme.