⭐ 4.9/5 · 127 Google Reviews · Valley Repair Specialists
Roof Valley Repair Winchester
Roof valley repair across Winchester and Hampshire. Lead valleys, mortar valleys and tile valleys — the most common source of roof leaks on Winchester properties.
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20+
Years Local
127
5★ Reviews
24/7
Emergency
10yr
Guarantee
Need valley repair in Winchester? We provide free surveys, fixed written quotes and a 10-year workmanship guarantee, with no call-out fee. Typical work is scheduled within the week and emergencies attended 24/7. Call 01962 809171 or book a callback within 2 hours.
The valley is where two roof slopes meet and channel water away — a high-failure junction on Winchester’s period terraces. These are the warning signs.
Damp on a ceiling directly below where two roof slopes meet
Visible cracks or splits in a lead or fibreglass valley
Debris and moss packing the valley and forcing water sideways
Rust stains from an old metal valley
When it is not the answer: A valley that is simply blocked with debris needs clearing, not rebuilding — we will clear and inspect before recommending any lead renewal. Read the full guide.
Roof valleys are where two roof slopes meet, channelling a combined water load into a single line. They are the most common source of roof leaks we investigate on Winchester properties — and the most frequently misdiagnosed. When a valley fails, water enters the roof structure at the lowest point and tracks horizontally across the ceiling before appearing internally, often several metres away from the actual failure point. The valley failure is frequently attributed to the wrong roof element as a result.
Lead vs Tile Valleys in Winchester
Winchester properties use two main valley types. Lead-lined valleys — a lead tray fixed along the valley channel — are standard on Victorian, Edwardian and 1930s properties. Lead valleys fail at bay joints, at the tilt fillet detail and at the head of the valley where water load is highest. Mortar valleys — concrete mortar bedded between cut tiles — are found on some post-war properties. Mortar valleys crack as the roof moves and are often the first element to fail on 1960s–70s Winchester housing. Open cut valleys using specialised valley tiles are used on some modern and refurbished roofs.
Free survey and written quote. No call-out fee. No obligation. Call 01962 809171.
Customer Reviews
What Winchester Customers Say
★★★★★
“Lead valley replacement on our 1930s Weeke detached — the valley had been tracked as a bedroom ceiling stain for two years. Full valley run in code 5, properly detailed. Dry in every storm since.”
James R. · Weeke, Winchester
★★★★★
“Mortar valley repair on our 1965 semi in Stanmore. They correctly identified the valley failure rather than the two other elements that had been suggested by others.”
Mary F. · Stanmore, Winchester
★★★★★
“Valley repair on our St Giles Hill Edwardian villa. Complex access, multiple elements. Excellent specification and workmanship.”
Valley Repair in Winchester — Why Homeowners Choose Us
Genuinely Local
We are based in Winchester and cover the surrounding Hampshire area. Not a national company routing your enquiry to a subcontractor — it is our team on every valley repair job.
NFRC Registered
Membership of the National Federation of Roofing Contractors is not automatic. It requires technical assessment, verified insurance and a signed commitment to the NFRC code of practice. You can verify our registration at nfrc.co.uk.
Written Guarantee
10-year written workmanship guarantee. The guarantee document is yours to keep.
Transparent Pricing
The written quote is the price. Scaffolding, waste disposal and VAT are always included. No additions discovered during the job.
Call 01962 809171 to arrange a free valley repair survey across Winchester and Hampshire. Same-week appointments available.
Coverage
Valley Repair Across Winchester and Hampshire
We carry out valley repair work across Winchester city and the surrounding Hampshire area — Eastleigh, Romsey, Chandler's Ford, Bishop's Waltham, New Alresford, Kings Worthy, Twyford, Colden Common, Otterbourne and Compton, plus all surrounding villages within approximately 15 miles of Winchester city centre.
Every valley repair job in this area — regardless of location — gets the same approach: free survey with written report, fixed-price quote, the correct material specification for the specific property, and a written workmanship guarantee on completion.
Not sure if we cover your area?
Call 01962 809171 and we will confirm immediately. If we cover your location, we will arrange a free survey same-week.
Full Guide
Valley Repair in Winchester — Complete Guide
The Correct Approach to Valley Repair
We carry out all valley repair work in Winchester to the same standard: free survey with written report, fixed-price written quote, correct material specification for the specific Winchester property, and a written workmanship guarantee on completion. NFRC registered, fully insured to £5m public liability. Free survey — call 01962 809171.
Technical Guide
Valley Repair on Winchester Properties — Technical Specification
The most important single specification decision in lead valley replacement is the lead code. BS 6915 (the British Standard for lead sheet in building) specifies code 5 (2.24mm, 25kg/m²) as the minimum for valley linings. Code 3 or 4 lead in a valley position is below specification and fails 20–40 years earlier than correctly specified code 5. The cost difference between code 4 and code 5 lead on a typical Winchester valley replacement is approximately £60–£120 — a marginal cost in the context of a £450–£900 valley replacement, but a difference of potentially 30 years in service life.
Thermal Movement Allowance in Winchester Valleys
Lead expands significantly with temperature — approximately 0.03mm per metre per degree Celsius. A 4-metre valley lead section will expand by approximately 3–4mm between a cold winter morning and a summer afternoon. Lead that is fixed rigidly without allowance for this movement will buckle and split at its fixing points. Correct valley installation uses lead clips at 450mm maximum centres, allowing the lead to move freely between clip positions. We never nail-fix lead valley lining directly through the face of the lead — this creates a stress point that fails within 5–10 years regardless of lead code.
Open Valley vs Lead Valley for Winchester Properties
Open valley tiles (proprietary half-round valley sections in a matching tile profile) are an alternative to lead on modern Winchester re-roofs. They require no lead and no maintenance beyond clearing debris from the channel. The practical limitation: open valley profiles are only available for current concrete tile profiles, not for clay plain tiles or natural slate. For Winchester period properties with clay tiles or slate, lead valley is the only appropriate solution. For post-war concrete tile properties, open valley tiles are a viable and maintenance-free alternative — we include both options in the re-roof quote where applicable.
Case Studies
Valley Repair Case Studies — Winchester
Hyde Victorian Terrace — Back Gutter Failure
Homeowner reported ceiling damp below the chimney breast, appearing 1.5 metres from the stack face. Two previous contractors had repointed the chimney and replaced the front apron. Our survey identified the failure at the back gutter — a lead section that had lifted at the top chase and was directing water horizontally across the ceiling joist before it appeared at the visible stain location. Full four-element lead replacement resolved the damp within two weeks.
Eastleigh 1960s Semi — Mortar Valley Failure
This Boyatt Wood property had a single mortar valley cracked in three places after progressive thermal cycling over 60 years. We identified the valley type at survey, quoted both rebed (£350) and conversion to lead valley (£620), and explained the 25-year advantage of lead over mortar. The homeowner chose lead. The valley has been sound through three winters since.
Chandler's Ford 1930s Detached — Two Valley Re-Leads
A hipped property with two lead valleys — both original from the 1930s build and now approaching 90 years old. We rebedded both valleys in code 5 lead in the same scaffold erection. Combining both valleys saved approximately £500 in scaffold costs compared to addressing them separately. Expected service life: 60–80 years.
Free valley survey across Winchester — call 01962 809171.
The process
From First Call to Sign-Off
1. Free survey
We inspect the valley lining, the tiles either side and the loft below for the water path.
2. Written quote
Fixed price naming lead code or GRP spec, within 48 hours.
3. Scheduling & access
Valley work needs safe standing, so a tower or scaffold is arranged.
4. The work
Old lining stripped, new code-4/5 lead or GRP laid with correct laps and upstands, tiles redressed.
5. Cleanup & guarantee
Debris cleared, 10-year workmanship guarantee.
Timescales
How Long Does It Take?
Job
Typical duration
Clear & re-seat valley
Half a day
Rebuild lead valley
2–3 days
GRP valley conversion
1–2 days
Lead and GRP both need dry conditions; work pauses in rain with temporary cover in place.
Access
Getting Safely onto Winchester Roofs
Valleys sit mid-slope, so a tower or scaffold is required for safe access. Scaffold is specified for: most valley rebuilds — the mid-slope position needs secure standing - always itemised in your written quote, never a hidden extra, and we arrange it.
The tight lanes of the historic core — around Kingsgate and the Cathedral Close — mean scaffold often oversails the public footway and needs a licence, while post-war estates like Stanmore and Harestock have easy driveway access. Pavement scaffold and skip permits go through Winchester City Council; allow a few working days on streets like Great Minster Street, Kingsgate Street, Canon Street where space is tight.
Pricing
Winchester Valley Repair: Cost Guide
Job
Typical range
Notes
Clear & re-seat valley
£150–£350
Debris clear
Rebuild lead valley
£450–£900
Code-4/5
GRP valley conversion
£400–£800
Fibreglass
Valley + adjacent tiles
£500–£1,000
Combined
What moves the price
Lead vs GRP specification
Access at mid-slope
Extent of adjacent tile disturbance
Tree-cover debris load
Worked example: Rebuilding a failed lead valley on a Hyde Victorian terrace, with a tower: around £720.
No deposit under £500. VAT included.
Covering SO22, SO23, SO21 and surrounding postcodes.
Guarantee
The Guarantee in Plain Terms
Valley workmanship guaranteed 10 years; correctly laid lead lasts decades.
Covered: workmanship for 10 years, in writing, transferable if you sell.
On top: manufacturer warranties on materials (terms vary by product).
Not covered: storm or impact damage - that is an insurance matter, and we will document it for your claim.
If a fault appears in covered work, we come back and put it right. No quibbling, no re-charge.
Good to know
What It Is Like While We Work
Access equipment for a few days and roofing debris cleared as we go — no internal disruption. You do not need to stay home for external work - we just need power and access agreed in advance.
Winchester valleys under tree cover fill fast in autumn; we time rebuilds for settled, dry spells. Winchester’s Itchen valley position raises humidity on the valley floor, so moss and slow drying affect Winnall and Bar End more than the exposed chalk uplands.
FAQ
Roof Valley Repair Winchester — Questions
Lead valley re-dressing (minor): £150–£350. Full lead valley replacement: £450–£900 depending on length. Mortar valley repair: £200–£450. Free survey and written quote.
Internal water stains or damp patches that track diagonally — consistent with a roof pitch — indicate valley failure. The internal appearance often understates the extent of the problem at roof level.
Victorian, Edwardian and 1930s properties typically have lead valleys. Post-war properties often have mortar valleys. Modern properties may have open valley tiles. We identify the type and specify the correct repair at survey.
Yes — where the lead is sound but has lifted at a joint, re-dressing and burn-welding can restore it. Where the lead has failed through the full section, replacement is the correct answer.
Code 5 lead (2.24mm, 25kg/m²) — the correct BS 6915 minimum for valley linings. Code 3 or 4 lead in valleys is below specification and will fail earlier.
Yes — 24/7 emergency response for active valley leaks. Call 01962 809171 any time.
A standard valley run on a 3-bed semi takes 3–6 hours depending on access and length. We scaffold where required for safe working.
Yes — free surveys with written condition reports across Winchester and all surrounding Hampshire areas. Same-week appointments available. Call 01962 809171.
Timelines vary by job scope and are confirmed in the written quote. Most valley repair jobs on Winchester residential properties are completed within 1–3 days. We give a day-specific timeline at quote stage.
Yes — £5m public liability insurance and employers' liability. NFRC registered. We provide insurance documentation on request before any Winchester job starts.
