Loft Insulation
ExcellentTrustpilot

Loft Insulation

Loft insulation fitted to the recommended depth by our own installers, usually in a single day. We check what's already up there, keep the eaves clear for ventilation, and leave you with a warmer house and less heat escaping through the roof.

Get a free quote

Step 1 of 4

Four quick steps. We reply within one business day.

Where you are

Your enquiry

Loft Insulation

Finance options available using

Ideal FinancePhoenix finance

Sound familiar?

Heating the house, and losing the heat through the roof?

Heat rises. In a home without enough loft insulation, a large share of what you pay to heat goes straight through the ceiling and out through the roof.

It's one of the cheapest and quickest upgrades to fix, and one of the most commonly done badly. Insulation gets compressed under storage boards, stops short at the eaves, or blocks the ventilation the roof space needs.

Check my loft
  • Cold upstairs rooms

    Bedrooms that cool down quickly because the heat escapes straight through the ceiling.

  • Thin old insulation

    A few centimetres laid decades ago, well short of today's recommended depth.

  • Squashed by storage

    Boards laid straight on top, crushing the insulation and most of its effect.

  • Condensation risk

    Insulation pushed into the eaves, blocking the airflow the roof needs.

What's Included

  • Loft insulation installation by our own in-house installers
  • Mineral wool topped up to the depth recommended for UK homes
  • Eaves kept clear and ventilation checked before we finish
  • Raised boarding available so you keep your storage space

Loft Insulation Installation, Done to the Right Depth

Loft insulation is usually the cheapest and quickest upgrade a house can have, and most jobs are finished by our own team in a single visit with no disruption downstairs. The part that decides whether it actually works is the depth. Plenty of older homes still have a thin layer from whenever it was first laid, well short of what's recommended today, and that thin layer is doing far less than the owners think.

As loft insulation installers, we check what's already up there before quoting: whether it can be topped up or needs clearing out, whether the eaves are blocked, and whether anything is being crushed under storage boards. Compressed insulation loses much of its value, so if you use the loft for storage we fit raised boarding on legs above the new layer rather than laying boards straight on top.It's also the first thing we look at before quoting a heat pump or a heating upgrade, because a loft that holds its heat lets a smaller, cheaper-to-run system do the same job. If the walls are losing heat too, external wall insulation is the next step.

  • Existing insulation checked, then topped up or cleared out
  • Depth measured and brought up to the current recommended standard
  • Eaves, vents and downlights kept clear and safe
  • Loft hatch insulated and draught-sealed where needed
0+

Projects Completed

Solar, heat pump and storage installs delivered across residential and commercial properties.

0+

Years Combined Experience

An accredited team with decades of hands-on energy and construction work behind it.

0

Industry Accreditations

Independently audited by MCS, TrustMark, Gas Safe and five other industry bodies.

Client Stories

Trusted By Homeowners And Businesses Alike

See how our renewable energy solutions are helping customers reduce costs, increase efficiency, and gain greater energy independence.

Amjid H.

Amjid H.

Home Owner

I got my insulation done by greentek they were fantastic from the start. On the way we had one two problems from the contractors but greentek took care of it! Kept me informed and solved the issues. They communicated consistently and kept me in the loop.

Review from Google

★★★★★

Luki

Luki

Business Owner

We required an urgent new boiler installation due to the old one breaking down and being unrepairable. Greentek Energy supplied and fitted a new one at very short notice so our tenants could have heating and hot water again. We are very grateful to Greentek Energy and would recommend them highly.

Review from Google

★★★★★

Ian B.

Ian B.

Home Owner

Part of the Ecobility company. the people at Greentek know their stuff. Got a quote in just under 20 minutes where others insisted on coming around the house. They were cheaper too!

Review from Google

★★★★★

Omer M.

Omer M.

Home Owner

Quick and efficient service.

Review from Google

★★★★★

Amjid H.

Amjid H.

Home Owner

I got my insulation done by greentek they were fantastic from the start. On the way we had one two problems from the contractors but greentek took care of it! Kept me informed and solved the issues. They communicated consistently and kept me in the loop.

Review from Google

★★★★★

Luki

Luki

Business Owner

We required an urgent new boiler installation due to the old one breaking down and being unrepairable. Greentek Energy supplied and fitted a new one at very short notice so our tenants could have heating and hot water again. We are very grateful to Greentek Energy and would recommend them highly.

Review from Google

★★★★★

Ian B.

Ian B.

Home Owner

Part of the Ecobility company. the people at Greentek know their stuff. Got a quote in just under 20 minutes where others insisted on coming around the house. They were cheaper too!

Review from Google

★★★★★

Omer M.

Omer M.

Home Owner

Quick and efficient service.

Review from Google

★★★★★

Our Process

Four Steps.
Zero Surprises.

From the first call to the final handover, a clear, transparent process designed to deliver solar, home improvement, and renovation work with zero hassle.

STEP 1

Free Survey

Book online or call. A Greentek specialist visits your property to assess your solar, heating, insulation, or renovation needs.

STEP 2

Custom Quote

Get a clear, fixed-price quote with material and brand options, and an honest timeline, no hidden fees.

STEP 3

Expert Installation

Our in-house accredited team carries out the work, solar, heat pump, insulation, or renovation, no subcontractors passing the job around.

STEP 4

Handover & Warranty

We walk you through everything on completion, clean up after ourselves, and hand over your written warranty.

Fully Accredited & Certified.

  • MCS Certified
  • TrustMark Government Endorsed Quality
  • Gas Safe Register
  • HIES accredited
  • Amtivo certified
  • SWIGA member
  • Qualitymark Protection accredited
  • British Assessment Bureau certified

What it costs

What loft insulation costs

Loft insulation is one of the cheapest upgrades a home can have, and one of the quickest. Four things change the price.

  • Loft size

    The floor area to be covered, measured at the survey.

  • What's up there now

    Whether we top up the existing insulation or clear it out first.

  • Access

    Hatch size, and how easy the loft is to work in safely.

  • Boarding

    Whether you want raised boarding for storage above the new insulation.

Every quote includes

  • A free site survey, with no obligation to go ahead
  • A fixed price agreed in writing before any work starts
  • Materials, labour and making good, in one price
  • Our own team throughout — no subcontractors marking the job up
  • A written workmanship warranty on completion

We don't quote over the phone from a postcode — the survey is what makes the price fixed rather than an estimate that moves. Finance is available through Ideal4Finance, subject to status.

Get a fixed-price quote

Frequently asked questions

How much does loft insulation cost?+
The cost of loft insulation depends on four things: the floor area of the loft, what insulation is already up there, how easy the loft is to access, and whether you want raised boarding for storage. We inspect the loft, then give a fixed-price quote in writing before any work starts.
How thick should loft insulation be?+
Loft insulation should be brought up to the depth recommended for UK homes today, which is considerably more than the thin layer laid in most older houses. We measure what's already there at the survey and tell you how much needs adding to bring it up to standard.
Are there loft insulation installers near me?+
Greentek Energy Ltd is based in Solihull and our own installers cover Birmingham, Wolverhampton, Coventry, Dudley, Cardiff, Swansea and the towns around them. Enter your postcode in the quote form and we'll confirm within one business day.
Is loft insulation worth it?+
For most homes with thin or no insulation, yes. It's the cheapest and fastest measure we install, it's usually finished in a day, and it cuts the heat escaping through the ceiling straight away. If your loft already has a good depth of insulation in good condition, we'll tell you and point you at the next measure instead.
How long does loft insulation installation take?+
Most lofts are insulated in a single day. Larger properties, awkward access or clearing out old material can add time, and you'll get a clear timescale with your quote. There's no disruption to the rest of the house while we work.
Do you need to remove old loft insulation before adding more?+
Not usually. If the existing layer is dry, clean and evenly laid, the new insulation goes straight over the top. It gets cleared out when it's damp, contaminated or badly laid, and we tell you which applies after looking in the loft rather than assuming.
Can I spread the cost of loft insulation?+
Yes. Insulation finance is available through Ideal4Finance, subject to status. It's more commonly used when loft insulation is fitted alongside bigger work, such as external wall insulation, a new heating system or a heat pump, and we'll set the options out with your quote.

Free Quote

Get a Free Loft Insulation Quote

Tell us about your loft insulation project and we'll come back within one business day with a straight answer, a plan and a real quote.

Property type
Are you the property owner?