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Loft Project Buying Guide

Loft Project Buying Guide

Keep your home warm and energy-efficient all year round with our loft insulation, then maximise the storage space in your loft with a ladder, lighting and storage boxes.

Specifically designed for use at ceiling level in between the joists, Knauf Insulation Earthwool loft roll is the perfect way to insulate your loft.

Made with Knauf Insulation’s ECOSE® technology, our loft roll is easy to handle, environmentally friendly and will produce low levels of dust, making it the ideal choice for your loft project. It is also made with up to 80% recycled material.

The benefits of insulating your loft

Reduce heat loss and improve energy efficiency

Reduce your heating or cooling bills

Reduce the transmission of external noise

Quick to install and maintenance free

Produce less carbon and save the environment

How many loft rolls do I need for my space?

Knauf Insulation Earthwool loft roll is available in 3 different thicknesses - 100mm, 170mm and 200mm. UK building regulations require 270mm of mineral wool insulation at ceiling level in a loft so the most common way of achieving this is through 100mm in between the joists and 170mm cross laid on top.

To achieve maximum performance, choose our 200mm loft roll, which will give a higher thermal performance when used in conjunction with 100mm layer between joists.


Knauf 100mm Bottom Layer Loft Roll Insulation - 8.3m²

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Knauf 170mm Standard Top Up Loft Roll Insulation - 6.47m²

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Knauf 200mm Super Top Up Loft Roll Insulation - 5.61m²

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What you'll need to board your loft

Learn how to insulate your loft


How to insulate a loft

Loft insulation is an effective way to reduce heat loss and save on your fuel bills. We’ll show you how to fit loft insulation rolls, plus how to insulate pipes and cold-water tanks.

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How to prepare your loft for storage

Your loft is the perfect out-of-sight storage space for your suitcases, Christmas decorations and those other bits and pieces that have no other home.

Learn more