Uninsulated buildings may lose up to a quarter of their heat through attic and roof spaces1. ROCKWOOL loft insulation helps to reduce this, saving costs and improving energy efficiency.

Loft insulation or attic insulation is a layer of thermally efficient material that is usually installed between the rafters, and forms a barrier between the loft interior and the roof to prevent heat escaping. Usually available in the form of loft insulation rolls or boards, there are a range of material options which offer varying thermal performance and other benefits. Installation can either separate the attic from the living space to form a cool loft, or include the attic to create a warm loft which serves as additional living space.

ROCKWOOL loft insulation is made from stone wool, providing a cost-effective, energy-efficient and non-combustible solution for maintaining consistent temperatures.

On this page you’ll find installation guidance, information for costs involved in attic insulation, advice on which products are right for your new-build or renovation project, and more.

Loft Insulation Products

Why do we need loft insulation?

As heat normally rises, uninsulated lofts and attics are prime places where it can escape from a building. Cold air can also easily enter and compromise indoor comfort.

The short-term solution? Turn up the heat in the winter – and open the windows in the summer.

However, this wastes a lot of energy and leads to bigger heating and electric bills – as well as having a negative impact on the environment.

Installing loft insulation in the loft space, both between and over the joists, can combat this – helping to keep the heat in and the cold out while saving costs and improving energy efficiency.

Through the relative high density and volume in combination with the closed layer, ROCKWOOL loft insulation also improves the acoustic performance of the floor – reducing external sounds coming into your sleeping room and providing peace of mind.
The intrinsic good fire performance and high fire resistance will further set your mind at ease.

Roger Peeters

Global Product Manager, ROCKWOOL Group
The effect of the installation can be felt immediately. No more cold draughts through cracks in the ceiling, or the uncomfortable feeling of a cold surface.

Roger Peeters

Global Product Manager, ROCKWOOL Group

Financial support

You may be able to access financial support for your loft insulation project in the form of grants or subsidies. Eligibility may vary depending on your location, home and status, but here are a few opportunities you should be aware of:

  • Energy Company Obligation (ECO) – the ECO obliges major energy providers to supply energy efficiency improvements to those who need them most. The scheme is applicable in England, Scotland and Wales, and loft insulation is one of the qualifying measures.
  • Advice for Scottish residents – if you’re based in Scotland, you can visit Home Energy Scotland or call 0808 808 2282 for free and impartial advice, including information on grants and loans.
  • Nest scheme – the Nest scheme is a Welsh initiative which aims to make homes in Wales warmer and more energy efficient. Nest offers free advice through its website or over the phone (0808 808 2244), which may extend to eligibility for free home improvements.
  • Northern Ireland Sustainable Energy Programme (NISEP) – NISEP provides grants for Northern Irish residents which can include support for home improvements such as loft and attic insulation.

For more information about loft insulation grants and free loft insulation, check the Energy Savings Trust website.

Roll Insulation, Loft, Attic


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