Instant
01 · Ask
Replace, ventilate or bird-proof?
Soffits in good shape but no vents? Damp loft? Birds nesting? Describe and the AI tells you the right intervention.
Ventilate your soffits.
Soffit vents to enable proper roof airflow — required by Part F for loft ventilation.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
20,000+UK homeowners
50,000Quotes sent
Keep going
Hire a soffit specialist. Vented, matched, sealed.
Read the brief on ventilation, edge trays and matching colour — then let Three local specialists quote.
Free
02 · Read the brief
Walk in informed
Continuous vs circular vents, eaves felt trays, bird-block requirements, condensation rules. Know what to ask.
60 seconds
03 · Compare
Compare 3 specialist quotes
Three local specialists quote on the same spec — material, ventilation, eaves tray — so the loft stays dry for 20+ years.
✦
Get soffit quotes Ready when you are
Enter your postcode and get free quotes from local pros.
Top tips
Hiring a soffits, without the regret.
Four moves that separate a smooth job from a nightmare.
Vented or solid — never one of each.
Mixing vented and solid soffits around the same loft creates an air-pressure dead spot. Specify the same type all round.
Replace the felt edge tray too.
Behind the fascia is a felt edge tray (eaves support). Often rotten. Insist this is replaced when soffit work is done — it's the difference between 5 and 20 years.
Match the colour to the property.
Pure white soffits look stark on red-brick houses; rosewood or anthracite read better. Soffit colour is a decade-long decision — get a sample on-site.
Check the loft vents are clear.
After soffit replacement, look in the loft — you should feel airflow at the eaves. Blocked vents = condensation + rotting timbers.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
uPVC soffit (per linear m)
£30–£60
Wooden soffit replacementPer linear m
£50–£110
Soffit-only whole houseSemi-detached
£1.2k–£3k
Vent strip retrofit (per m)
£18–£40
Bird-blocking retrofit
£250–£600
Scaffold hire (3 days)
£400–£1.2k
!
Quote spread is typically ± 18% — always get 3 quotes.
At a glance
Infographic · VideoThe Soffits briefing.
Infographic
Soffits quick-view
Video guide
Soffits explained
Soffit ventilation prevents roof condensation and timber rot. Building Regs essential for new and many retrofit. Expect to pay £100–£800 for UK soffit ventilation upgrade.
What Does the Work Involve?
Roofer or fascia specialist surveys airflow. Vented soffit strips installed (10mm continuous). Or retrofit circular vents drilled into existing. Roof tile vents at ridge for cross-flow. Cold roof airflow path created.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Vented soffit strip per metre | 15 | 40 | Continuous |
| Retrofit circular vents | 5 | 20 | Per vent |
| Small house upgrade | 100 | 400 | Quick fix |
| Full house vented soffit | 400 | 800 | Replacement included |
| Lap vents over fascia | 3 | 15 | Per vent |
| Ridge vent install | 200 | 600 | Cross-flow |
| Combined survey + install | 300 | 1,000 | Comprehensive |
UK Regulations
Building Regs Part F (ventilation) and Part L (thermal). 10mm continuous ventilation typical. BS 5250 condensation control standard.
Frequently Asked Questions
Why ventilate soffit?
Prevents condensation under tiles, rot in timbers, mould in loft.
Continuous strip or circular vents?
Continuous: better airflow, standard for new build. Circular: retrofit easier.
How to tell needs ventilation?
Condensation in loft, mould on timber, damp insulation. Survey advises.
Spray foam blocks ventilation?
Closed-cell can — controversial. Survey before applying.
How long does vent system last?
uPVC vented soffit: 25-30 years. Permanent.
Cost-effective upgrade?
Yes — £100-£400 prevents thousands in roof damage.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
NEWAI Trade Assistant
Got more questions
about soffits?
Ask follow-ups in plain English. The AI explains options, sequencing and what to ask the soffits — so you walk in informed.
I'm planning a job. Should I be looking for a soffits?
Sounds like a job for soffits. Tell me what you're trying to do — I'll walk you through costs, timeline and what to ask before they start.
FREE QUOTES60 SECONDS
Keep reading
VIEW ALL SOFFITS GUIDES →More soffits guides.
Guide
Soffit Replacement — UK Cost & Material Guide
Soffit replacement. UK costs by material.
READ GUIDE →GuideFascia Replacement — UK Cost & Material Guide
Fascia board replacement. UK costs.
READ GUIDE →GuideBargeboard Replacement — UK Cost & Material Guide
Bargeboard replacement. UK costs.
READ GUIDE →GuideCladding & Roofline Coordination — UK Cost Guide
Coordinated cladding and roofline. UK costs.
READ GUIDE →GuideWooden Soffit Repair & Painting — UK Cost Guide
Repair and repaint wooden soffits. UK costs.
READ GUIDE →GuidePest-Proofing Soffits — UK Cost & Wildlife Guide
Pest exclusion from soffits. UK costs.
READ GUIDE →