Loft Insulation Hampshire
Loft Insulation Services in Hampshire
At Loft Insulation Specialists, we help Hampshire homeowners upgrade their loft insulation to cut energy bills, boost comfort, and increase property value. Whether you’re checking grant eligibility through ECO4, assessing your current setup, or planning installation with Knauf Earthwool or Superfoil, here’s everything you need to make an informed decision about improving your home’s efficiency.
What are the signs my loft needs new insulation, and how do I check?
Your loft needs new insulation if you spot compressed, damp, or sparse material below 100mm depth – far short of our recommended 300mm Knauf Earthwool standard for optimal energy efficiency. At Loft Insulation Specialists, we help you identify these issues safely during a free survey. Here’s our 5-step checklist to assess your loft condition.
Measure Insulation Depth
Climb up safely during daylight and measure between joists using a ruler or tape measure. Anything below 100mm falls short of modern standards. Most homes need topping up to our 300mm depth for maximum heat retention and bill savings.
Check for Compression
Gravity and roof movement flatten insulation over 20–30 years, even if it looks intact. Compressed material loses up to 50% effectiveness, creating cold spots downstairs. Gently press down – if it doesn’t spring back fully, replacement is needed.
Look for Gaps Between Batts
Visible gaps or thin patches between joists let heat escape rapidly. These often appear near walls, around pipes, or at eaves edges. Uneven coverage wastes energy and indicates settling that requires professional attention.
Spot Water Staining or Damage
Brown stains, discolouration, or clumping signal roof leaks or condensation. Rodent droppings or mould growth are red flags too. Damaged insulation never performs properly—we’ll identify and remove contaminated areas during installation.
Review Your Energy Bills
If heating costs spike despite steady usage, thin or ineffective insulation is likely the cause. Compare bills year-over-year – a 10–20% unexplained rise often traces back to loft heat loss. Our survey confirms this correlation with actual measurements.
Does my home qualify for free loft insulation grants?
Your home qualifies for free loft insulation grants if you receive certain benefits or meet income thresholds under the ECO4 scheme running until 2026. We check your Energy Performance Certificate rating – properties rated D, E, F, or G get priority funding. During your free survey, we assess if you have less than 100mm of existing material, which most older homes do, making them eligible for grant-funded upgrades.
You qualify if you claim Pension Credit or Universal Credit, or Child Benefit (subject to income thresholds), or other means-tested benefits. We help both owner-occupiers and private tenants. Landlords just need to provide written permission before we start. The grant covers all materials and labour – you pay nothing for qualifying installations.
How much does loft insulation cost?
Loft insulation with Loft Insulation Specialists costs between £600 – £1500 for a typical three-bedroom semi-detached home. Prices vary based on access difficulty and material type – we use Knauf Earthwool at 100mm-200mm for excellent value and performance. Superfoil insulation is ideal for tighter spaces. We provide free assessments before giving final fixed prices, typically £15-22 per square metre including materials and labour.
Clearing your loft which includes licensed disposal of old insulation adds £650 if needed, but most jobs finish in 2–4 hours with predictable daily rates.
How long does loft insulation installation take, and is it messy?
Loft insulation installation with Loft Insulation Specialists takes 4-6 hours for most average-sized lofts with good access, and we keep it clean and hassle-free using protective measures from start to finish. Complex jobs or removing old spray foam insulation first might extend to 1-3 days, but you can usually stay home comfortably throughout.
- 1
Preparation & Protection
Clear stored items and lay protective sheeting over floors and furniture below.
Vacuum loose debris first to minimise dust generation.
Two-person crew sets up equipment quickly without needing your ladders or tools.
- 2
Insulation Installation
Roll out batts precisely between joists for full coverage with minimal disturbance.
Generates far less dust than blown-in methods – most homes stay liveable.
Noise stays manageable; no heavy machinery or disruptive cutting required.
- 3
Cleanup & Accessibility
Bag all waste insulation and sweep the loft space thoroughly.
Leave your loft immediately usable for storage once we depart.
Same-day completion guarantee for standard jobs with full tidying included.
Will loft insulation increase my home's value or EPC rating?
Loft insulation with Loft Insulation Specialists increases your EPC rating by 1–2 bands on average, pushing a D-rated property into C or B territory. This upgrade can boost resale value by £5,000 – £15,000 in Hampshire markets. Estate agents love highlighting our thermal improvements to eco-conscious buyers. We document the work with photos and certificates before your EPC assessor visits to secure the highest rating.
Buyers now filter searches by EPC rating – higher ratings attract more viewings and quicker sales. Every band improvement adds 5–10% to your asking price. Older properties with minimal or absent insulation see the biggest gains.
Why Choose Loft Insulation Specialists for Loft Insulation in Hampshire?
Award-Winning Insulation Services
We have been recognised as the 'Best Insulation Installation Firm Hampshire - 2023' by the Southern Enterprise Awards, an independent awarding body.
Guaranteed energy savings
We guarantee up to 35% lower energy bills by slashing heat loss, backed by our free survey, transparent results and full satisfaction pledge - if your home isn't noticeably warmer, we fix it free.
Proven Accredited Reliability
Checkatrade and Google reviews from Hampshire locals verify our punctuality, spotless sites and top-quality services - independent proof we deliver every time.
True Local Hampshire Experts
Fast same-week surveys and quotes, as well as tailored solutions for local projects mean quicker installs and better results than out-of-area firms.
40+ years of experience
With over 40 years of experience in insulation and home improvements, our team quickly diagnoses issues, gives better advice, and delivers installations done right the first time.
No-obligation surveys
Our surveys are always free with zero obligation. No high-pressure sales or jargon: just straightforward facts and options, respecting your decision every time.
Frequently asked questions
Take a look at the Frequently Asked Questions regarding our Loft Insulation service.
What happens if my loft insulation settles or becomes uneven over time?
Loft insulation settles naturally over 10–15 years, losing 30–40% of depth as gravity compresses the fibres and creates cold spots below. Loft Insulation Specialists can top up settled material rather than replacing everything—we add new layers of Knauf Earthwool above the old insulation. We measure depth variations across your loft and identify areas needing extra material to reach 270mm+.
We redistribute loose-fill insulation and level uneven areas before adding fresh batts. We check for moisture damage causing premature compression—wet insulation never fully recovers. Topping-up costs far less than full replacement. Schedule annual checks with us to catch issues early.
Can loft insulation cause condensation or attic moisture problems?
Loft insulation causes condensation only when installed without adequate ventilation or vapour barriers, trapping moisture rising from below. We prevent this by maintaining 50mm air gaps at eaves for escape through soffit vents. Our breathable membranes between Knauf Earthwool/Superfoil and roof timbers stop condensation while permitting airflow—proper installation prevents 95% of moisture issues.
Condensation usually comes from blocked ventilation, not the insulation itself. We find it in poorly ventilated lofts causing black mould on timbers. We retrofit additional ventilation tiles or ridge vents if needed, measuring humidity before and after to confirm levels stay below 60% (mould threshold). Monitor during the first year to catch issues early.
How do I know if my loft has enough ventilation before adding insulation?
Your loft has enough ventilation if you see continuous soffit vents along eaves and ridge vents/tiles at the peak. We recommend 10mm ventilation per metre of loft width. Check for blocked airbricks or felt obstructing eaves airflow. Use smoke pellets to measure cross-ventilation – adequate airflow prevents 90% of condensation, meeting building regulations (25,000mm² free area for 50m² loft).
We recommend upgrading ventilation before insulating. This can be done by cutting additional soffit vents or installing over-fascia systems. Musty smells, condensation on timbers, or summer heat buildup signal poor ventilation – this needs to be addressed first.
Will loft insulation interfere with my solar panels or attic storage?
Loft insulation interferes with solar panels only if too close to wiring, conduits, or inverters – these need heat dissipation. We maintain 100mm clearances around electrical components, routing cables above Knauf Earthwool using conduit clips to prevent overheating. Junction boxes get removable insulation sections for easy maintenance – most solar warranties require this.
For storage, we install raised platforms over insulated joists using 18mm OSB on 100mm timber battens. Lightweight items like decorations or suitcases work fine without compressing insulation. Avoid heavy loads – we’ll advise weight limits based on joist spacing.
What maintenance does loft insulation need after 10+ years?
Loft insulation needs visual inspection every 3–5 years for compression, water damage, or pests. Knauf Earthwool lasts 40+ years with minimal upkeep. Check for roof leak staining, material pulling from eaves, or debris.
We can photograph your loft during surveys for a maintenance timeline. We vacuum debris, replace damaged sections (60–70% cheaper than full replacement), and offer inspection/top-up packages. Annual checks prevent major issues.