Insulation installers covering all of Scotland 0800 069 9339  ·  info@scottherminsulation.co.uk

Loft insulation across Scotland

Retain up to 45% more heat in your home. Approved installers, Knauf Earthwool and ThermaFleece materials, grants available where you qualify.

Loft insulation between and over the trusses
ScotTherm loft hero
ScotTherm superheroes

Your loft hero

Heat rises, and in most Scottish homes it goes straight out through a loft that was never properly done. Our loft hero measures what you've got, tops it up to the depth your loft needs, and keeps your storage space usable.

Get a free survey Meet the whole team

What is loft insulation?

Loft insulation is a barrier placed in your roof space, either between the joists (the horizontal beams along the loft floor) or between the rafters (the sloping beams supporting the roof). It slows the transfer of heat between your living space and the outside, keeping the house warmer in winter and cooler in summer.

A quarter of the heat in an uninsulated home is lost through the roof. Money spent on new central heating or double glazing is partly wasted if the loft isn't done first. Every customer we've installed for reports a drop in heating bills and a warmer house.

The thicker the insulation, the better it works. We install to the depth your loft needs, which we measure and agree with you at the survey. Modern mineral wool and sheep's wool insulation is durable, lasts at least 25 years, and pays for itself over and over.

Loft topped up and boarded on a raised deck by ScotTherm, East Linton

East Linton: top-up plus raised boarding. See the job.

Already have some insulation? If it's under 100mm, damaged or patchy, a top-up is one of the cheapest, highest-return jobs you can do on a house.

Types of loft insulation

Which one suits your loft depends on access, whether the roof is pitched or the loft is converted, and what's already there. The survey tells us.

Blanket (roll) insulation

See two layers of Earthwool going into a trussed loft in Inverness, including fire covers over the downlights.

The most common and cost-effective option. Rolls of mineral wool such as Knauf Earthwool laid between and across the joists. Easiest to fit and the all-purpose choice for most lofts, but not suitable for insulating the roof slope itself.

Sheet and board insulation

Rigid PIR boards fitted between the rafters. The best solution for insulating the underside of the roof, room-in-roof conversions and sloping ceilings. Can be boarded over and decorated.

Sheep's wool

ThermaFleece British sheep's wool. A natural, breathable, premium option with excellent heat retention and acoustic properties. Popular in older and period properties.

Loose-fill and blown insulation

Loose material such as cellulose or mineral wool blown between the joists. Useful for lofts that are very hard to access, but it can be messy, isn't always secure in a draughty loft, and must be done by a professional. Rarely our first recommendation.

We don't install spray foam in domestic properties. It traps moisture against timbers, is very difficult to remove and can make a house hard to mortgage or sell.

Benefits of loft insulation

Lower energy bills

Properly installed loft insulation is the most effective single measure, with up to a 45% improvement in heat retention.

Better EPC rating

One of the leading measures for improving your home's Energy Performance Certificate.

Fewer condensation problems

Correctly fitted insulation with proper ventilation reduces moisture build-up in the roof space.

Quick, clean install

Usually done in a day with no upheaval to your daily life.

Lower carbon emissions

Less heating means a smaller carbon footprint from your home.

Higher property value

A well-insulated home with a good EPC is a strong selling point.

Quieter house

Not a soundproofing measure as such, but all insulation dampens outside noise.

Grants available

The most commonly funded measure under Scottish and UK schemes. See what you could get.

Loft insulation cost in Scotland

See a typical top-up in Cramond, Edinburgh, before and after, with the rule in it.

Cost depends mostly on the size of the loft and whether it's a top-up or a full install. A small semi-detached is obviously very different from a large detached house, and access, existing boarding and the material you choose all play a part.

Whatever the outlay, loft insulation typically pays for itself within a few years and then it's all savings. According to the Energy Saving Trust it can knock a meaningful amount off annual bills, and if you qualify for a grant the cost may be covered entirely.

We give an accurate written quote after a free survey. No estimates over the phone that change on the day.

Grants for loft insulation

Loft insulation grants in full.

Loft insulation is the measure most often funded by Scottish and UK government schemes. Depending on your circumstances you may qualify through Warmer Homes Scotland, the Home Energy Scotland grant and loan, ECO4 or a council ECO Flex route.

Grant-funded work is installed by TrustMark registered installers, and we'll help you through the application.

Loft insulation grants explained

What customers say

★★★★★ 5.0 on Google · 17 reviews
★★★★★

Scot-Therm did an amazing job of our cavity walls and loft insulation. So helpful, quick, and hardly left a trace. Could not recommend them enough.

Tina R. · Cavity wall & loft insulation · Google review
★★★★★

Guys were on time and friendly. Did job in great time. Tidied up behind themselves. Would recommend.

Ian H. · Loft insulation · Google review

Read all 17 Google reviews

Loft insulation by area

Edinburgh · Glasgow · Fife · Dundee · Aberdeen & Aberdeenshire · Perth & Kinross · Stirling & Clackmannanshire · Falkirk · West Lothian · Ayrshire · Inverness & the Highlands · Lanarkshire · Caithness · Moray · Isle of Skye · Argyll & Bute · Scottish Borders · Dumfries & Galloway · Angus · East Lothian · Midlothian · Renfrewshire & Inverclyde · Dunbartonshire

Loft insulation questions

How thick should loft insulation be?

Every house is different. The right depth depends on joist size, ventilation, how the loft is used and what's already there. Many older homes have 100mm or less, which is well below what's needed and usually qualifies for a top-up. We measure and tell you.

How much heat does loft insulation save?

Around a quarter of a home's heat escapes through an uninsulated roof. Properly installed loft insulation can retain up to 45% more heat, and customers consistently report lower heating bills.

How long does loft insulation last?

Modern mineral wool and sheep's wool insulation lasts a minimum of 25 years and pays for itself many times over.

Can I do it myself?

We don't recommend it. Lofts often have areas that aren't freely accessible, insulation has to be fitted correctly between and over joists, and ventilation and wiring need to be handled properly. A poor DIY job can cause condensation problems.

Can I get a grant for loft insulation in Scotland?

Yes, loft insulation is the most commonly funded measure. Warmer Homes Scotland, Home Energy Scotland and ECO4 all cover it for eligible households. Call us and we'll check what you qualify for.

Get a free loft insulation quote

Fill in the short form and one of the team will call you within 48 hours to arrange a no-obligation survey at your home. If you'd rather talk now, call 0800 069 9339.

The EPC, council tax band and benefits questions are optional – they just let us check grant eligibility before we visit.

We'll only use your details to get back to you about your enquiry (privacy). Prefer to talk? 0800 069 9339

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