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Step by Step Underfloor Insulation Installation Instructions

To assist you we’ve developed the easy step guide, follow it and you can’t go wrong.

Don’t forget to pick up your Expol Underfloor Easy Measure Ruler. Use it to measure the underfloor joist sizes, so you can purchase the correct panels for your DIY Insulation project.

Step 1

Step 2

Installation Step 1Place your Easy Measure Ruler or a tape measure against one side of the joist.
The opposite joist will fall within one of our 4 panel sizes. Joist sizes can vary, so be sure to measure more than one. You may need a few different panel sizes to complete the job.
Installation Step 2If the panel is too wide, simply slice down the appropriate concertina edge, leaving the panel approximately 5mm over sized to ensure a firm fit.

Step 3

Step 4

Installation Step 3Slide the panel between the joists, the concertina designed cuts will ensure a tight fit. The panel should be pushed up hard against the bottom of your floor leaving no air gap. Installation Step 4Fixings:
Once panel is installed tack
2 Expol Fixings in opposite corners to ensure Expol Underfloor will stay in place for the lifetime of your home.

Step 5

Step 6

Installation Step 5Electrical:
For cables that come into DIRECT contact with Expol Underfloor, place Expol Wireguard around the wires before installation.
Installation Step 6Pipes & Plumbing:
For obstacles such as pipes and plumbing use your sharp knife to cut the panel and notch around the difficult areas.For future maintenance, leave 100mm clearance around pipes and plumbing.

DIY VIDEO & GUIDE

See how easy it is to install Expol Underfloor Insulation -
Click play to watch this DIY installation guide

Product ResourcesAdobe PDF

Recyclable 6 EECA Compliant
Step by Step GuideR Value 1.4


RIGID POLYSTYRENE SIZES:

Expol Insulation Panel Sizes