How To Insulate a Floor using EcoQuilt Expert or YBS SuperQuilt

How to insulate your suspended or floating timber floors using our high-performing multifoil insulation materials, such as EcoQuilt Expert and YBS SuperQuilt.

This method is guaranteed to save on space, cost, and installation time compared to using Kingspan and Celotex.

If you are looking for an insulation material to lay directly on top of your existing floorboards or laminate, please see our EcoTec FloorFoam.

Ecohome-Insulation are the leading UK & European distributor of Multifoil Insulation products such as EcoQuilt Expert and YBS SuperQuilt. We offer free next working day delivery to the UK Mainland (on orders placed before 2pm over £100 + VAT).

Installing Over Existing Joists

Start by removing the existing floorboards to expose all joists. Run the multifoil perpendicular to the joists, cutting at each end and allowing enough material to recess the quilt into the joists.

Recessing Multifoil

To save on headroom, recess the multifoil into the joists.

We recommend using a 50mm batten as a guide and stapling along the top and sides of each batten. Our Multifoil Saddle Clips can be used instead if preferred.

Taping and Sealing with ThermaSeal Foil Tape

Tape and seal around the perimeter with ThermaSeal Foil Joining Tape. This will prevent draughts from rising through the flooring.

We recommend overlapping each layer of multifoil by 50mm and leaving the overlaps untaped, to allow the timbers to breathe.

Laying Floorboards

Install the floorboards back over the joists and insulation. This creates an air cavity on either side of the insulation.

Disclaimer – Ecohome-Insulation cannot be held responsible for any losses financially or physically from advice provided in this How-To-Guide.

SuperQuilt and EcoQuilt should always be installed as per the manufacturer's recommendations and data sheets.

We always recommend using good building practice when installing our products.