Loft Insulation Perth

Draughty ceilings, cold rooms below the loft, and heating bills that feel higher than they should be usually point to one thing: not enough insulation up there. Up to a quarter of a home’s heat can escape through an uninsulated roof. We fit professional loft insulation for accessible, unused loft spaces, laid to current standards.

An HES grant is available to cover a significant portion of the cost, subject to an eligibility check. It’s also one of the quickest insulation upgrades, often completed in a day.

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Is loft insulation right for your home?

This suits any home with an accessible, unused loft space that’s currently uninsulated or under-insulated. The recommended depth today is 270mm, and plenty of older Perth homes still have 100mm or less, sometimes nothing at all. Topping it up reduces heat loss through the ceiling, keeping warmth in during winter and excess heat out in summer.

It’s worth being clear on the distinction here. Loft insulation is for an empty loft you use for storage or don’t use at all. If your loft has been converted into a bedroom, office or living space, the insulation goes between the rafters instead, and that’s room in roof insulation, a different job entirely.

We’re a professional installer, one of our four insulation types, and that route means the work is done to standard, qualifies for the HES grant, and carries our guarantee.

Underfloor heating and insulation installation, Perth home

What’s involved in the installation

We start with a survey. We check access, joist depth, existing insulation and any obstructions like pipes, wiring or tanks that need working around, along with damp and ventilation. It also confirms the loft is genuinely unused. If it turns out to be habitable, room in roof insulation is the right fit instead.

Mineral wool rolls are laid between the joists first, then a second layer across the top at right angles, bringing the total up to 270mm. We work carefully around pipes, tanks and hatches. It’s quick, clean work, typically a day or less for a standard-sized loft, making it one of the fastest insulation measures we offer.

Grant support may be available. HES offers a grant of up to £1,500 plus a £500 interest-free loan (verified 4 August 2026), subject to an eligibility check, with energy-efficiency grants covering up to 75% of combined cost, capped at £7,500. There’s a further £1,500 rural uplift where applicable. An EPC is required, and funding is based on your property rather than your income. You manage the HES application yourself; we’ll help you through it. If we’re removing old, degraded insulation, we hold a Waste Carriers Licence to dispose of it responsibly.

Underfloor insulation, loft insulation perth

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Why choose us for your loft insulation

We’re TrustMark registered, required for HES-funded insulation work, and PAS2030 accredited (since 2021), the standard for government-funded energy efficiency work.

This work is fully backed by our Qualitymark guarantee: a 25-year system guarantee and a 2-year workmanship guarantee, both insurance-backed. Even for a simpler measure like loft insulation, that’s genuine peace of mind that a DIY job simply doesn’t come with, along with grant eligibility and a job done to PAS2030 standard. Our team carries over 80 years of combined trade experience, and we hold public liability, employers’ liability and professional indemnity insurance.

We’re based in Perth and cover the full Perth and Perthshire area.

What we provide for our customers:

PAS2030 Certified for Government Funded Work

Trustmark Registered and Independently Audited

Internal Wall, Room in Roof, Loft and Underfloor

25 Year System Guarantee Backed by Quality Mark

SWIP and Wetherby Accredited Installers

Trustmark Registered, as Grant Funded Work Requires

Perth-based, Not a National Call Centre

Waste Removed and Disposed Of Properly

FAQs

How much does loft insulation cost?

It depends on your loft size and how much insulation is already there. The HES grant covers up to £1,500, so for many eligible properties the out-of-pocket cost is minimal, subject to an eligibility check. We provide a free survey and quote so you know exactly where you stand.

Can I get a grant for loft insulation?

Yes. HES offers a grant of up to £1,500 plus a £500 interest-free loan (verified 4 August 2026), subject to an eligibility check. It’s based on your property rather than your income, and you’ll need an EPC. You manage the application yourself and we’ll support you through it. See our Home Energy Grants page for the full detail.

How thick should loft insulation be?

The current recommended depth is 270mm. Many older homes have 100mm or less. If your existing insulation is below that, topping it up is a straightforward upgrade, and we’ll check the depth as part of the free survey.

How long does loft insulation take?

Typically a day or less for a standard-sized loft. It’s one of the quickest energy efficiency measures around, and we’ll give you a clear timeline with your quote.

What's the difference between loft insulation and room in roof insulation?

Loft insulation goes on the floor of an empty, unused loft, mineral wool laid between the joists. Room in roof insulation goes between the rafters of a loft that’s been converted into a living space instead. The method, the materials and the grant level all differ, so if your loft is habitable, that’s the one to look at.

Can I still use my loft for storage after insulation?

Yes, but with a little care. Standard mineral wool shouldn’t be compressed by heavy storage or boarding laid directly on top of it. Raised storage platforms, with legs sitting above the insulation, keep the loft usable without squashing it. We can talk through storage-compatible options during the survey.

Do you insulate homes in my area?

Yes, across the full Perth and Perthshire area. Loft insulation is relevant to almost every property, so it isn’t limited to particular neighbourhoods the way some of our other insulation work is. If you’re not sure your area’s covered, just ask.

No Obligation | Safe & Private | Takes 1 Min

Save up to £420* on your energy bill annually by upgrading to a modern, efficient boiler.

*Figure from the Energy Saving Trust, based on replacing a G-rated boiler with no heating controls with a new A-rated condensing boiler fitted with a programmer, room thermostat and thermostatic radiator valves (TRVs), in a gas-heated home in Great Britain. Savings will vary depending on the size and thermal performance of your home.

Figures reflect the Energy Saving Trust's estimates as published May 2026.