Loft Insulation
Knauf Earthwool is a glass mineral wool loft roll: non-combustible (Euroclass A1) and laid between and across the ceiling joists. It is the usual choice for a standard pitched loft.
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Loft insulation specialists in Sussex
Loft Insulation in Sussex
Arrange a free loft assessment for insulation, top-ups, raised boarding, loft ladders, mould treatment and rodent proofing across Sussex, with a written quotation before anything begins.
What we do
Our services
Everything we do happens in the loft: insulation, storage, access, and the problems people find when they finally look up there.
Raised Loft Boarding
Raised boarding turns loft space into usable storage without compressing the insulation underneath, so you keep both the storage and the warmth.
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SuperFOIL Insulation
SuperFOIL is a thin multifoil insulation fitted to the rafters. It suits lofts you want to use, low-pitched roofs and spaces where a deep layer of wool on the floor will not work.
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Mould & Condensation
We look for the cause of loft mould, treat the affected timbers and roof lining, and set out the ventilation and moisture fixes that deal with the condensation behind it.
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Rodent Proofing
Mice and rats in the loft spoil insulation and can chew cables. We find how they are getting in, seal the entry points and replace insulation they have damaged.
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Loft Ladders
A proper loft ladder makes the loft part of the house: measured to your ceiling height and hatch, with the hatch insulated and draught-proofed.
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Spray Foam Removal
Careful removal of sprayed polyurethane foam from the underside of your roof, a clear look at the timbers underneath, and a properly insulated loft afterwards.
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Why us
How we work
Simple to arrange and honestly explained, without pressure or permanent “offers”.
Free assessment
We look at your property and loft first, with a survey where one is needed. No obligation.
Written quotation first
A clear written recommendation and quotation, setting out the scope, materials and price, before anything is agreed.
Honest recommendations
If a top-up is all you need, that is what we quote. If ventilation, damp or rodents need sorting first, we explain why.
Done properly
Insulation to the recommended 270mm, eaves kept clear, hatches insulated, and boards raised so they do not squash the insulation.
Guarantee up to 5 years
Eligible installations may include a written guarantee of up to five years. The terms are set out in your quotation.
Clear about who does the work
Depending on the service and location, work may be completed by The Insulation Company or an approved installation partner.
Coverage
Areas we cover
Loft insulation in towns across Sussex, from Brighton, Hove and Worthing to Crawley, Horsham, Chichester, Eastbourne and Hastings.
West Sussex
Not sure if we cover your area? Give us a call or see all locations.
Our work
Recent jobs
Real jobs from The Insulation Company’s project library, with the town each was done in.
Loft insulation installation Compact 1950s semi-detached house
Loft Insulation Case Study — Compact Loft Insulation Upgrade Around a Hatch, Southampton
A compact 31m² loft with limited headroom, bare joists across almost the full floor and no insulation around the hatch trimmers. It was given a full 300mm Knauf glass mineral wool layer, fitted carefully around the hatch and low edge bays.
Southampton
Mould & condensation treatment 1960s detached bungalow
Loft Mould Treatment in Southampton
Mould treatment and ventilation checks in a low-pitched bungalow loft
Southampton
Loft insulation installation Long mid-terrace house
Loft Insulation Case Study — Long Loft Insulation Upgrade With Side Wall Detailing, Portsmouth
A long mid-terrace loft running the full length of the property, with no consistent insulation across the floor. The full 47m² length was insulated to 300mm, with careful detailing along the low brick side walls.
Portsmouth
Loft insulation installation Older terraced house
Loft Insulation Case Study — SuperFOIL Installation Around Complex Cross Bracing, Portsmouth
Large cross braces had stopped earlier roof upgrades in this loft, leaving most of the pitched roof untreated. The floor was topped to 300mm and SF19 SuperFOIL fitted continuously around the bracing across the 47m² pitch.
Portsmouth
Expert advice
From our advice centre
Honest guides for Sussex homeowners.
Is Loft Insulation Worth It? A Sussex Homeowner's Honest Guide
For most Sussex homeowners the honest answer is yes, but how much it helps depends on your home type, your current insulation and how you heat the house.
Read the guide
SuperFOIL vs Mineral Wool: Which Is Right for Your Loft?
Mineral wool on the loft floor is the best value for most homes. SuperFOIL earns its place where you need the loft space, have a low pitch or awkward roof. Here is how to choose.
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Loft Condensation and Mould: Why It Happens and How to Fix It
Wet felt, dripping nails and black spots on the rafters are usually condensation, not a leak. Here's what causes it in lofts across Sussex and how to put it right.
Read the guide
Get started
Get your free quote
Tell us about your loft and we will come back to you to arrange the next step. There is no obligation.
- Free loft assessment
- No obligation, no pressure
- Honest, practical advice
- Written quotation before any work
Our story
About Sussex Insulation Company
Sussex Insulation Company helps homeowners across Sussex with their lofts: insulation and top-ups, raised boarding, loft ladders, and the problems people find up there, from mould and condensation to mice and spray foam.
We are part of The Insulation Company. We do not publish ratings, customer counts or claims we cannot back up; what we offer is a straightforward process and a written quotation before any work begins.
Looking for a team closer to you?
Part of The Insulation Company
Sussex Insulation Company is part of The Insulation Company, which helps homeowners across the UK. Our sister sites cover Essex, Bristol and the West of England, and Cardiff and South Wales.
Free, no obligation
Ready to arrange a free loft assessment?
Tell us about your property and we will review your loft requirements, then provide a written recommendation and quotation before any work begins.