⚡ Emergency roof repairs 24/7 — Call now: 0160 428 1189
⭐ 4.9/5 · 143 Reviews · Semilong, Northampton

Roofers inSemilong, Northampton

Local roofing specialists covering Semilong and all NN2 postcodes. Clay tile slippage as lime mortar beds dry and crack, lead flashing failure on chimney stacks, and felt underlay failure on roofs now approaching 100 years without a full overhaul. Repairs, replacements, flat roofing and emergency call-outs — free no-obligation quotes.

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20+
Years Local
143
5★ Reviews
24/7
Emergency
10yr
Guarantee
NFRC Registered
Fully Insured
10 Year Guarantee
Free Quotes
No Call-Out Fee
Local Expertise

Roofers Who Know Semilong

Semilong is one of Northampton's most densely built Victorian neighbourhoods — continuous terrace streets of two-storey and two-and-a-half-storey properties built to house the workers of the town's shoe manufacturing industry. The roofing stock is almost entirely original clay plain tile on lime mortar, with original bitumen felt undersays where they were ever installed. Many properties retain original lath and board sarking rather than felt at all. The chimneys — present on virtually every property — are a major source of repair calls, with both mortar joint failure and lead flashing failure extremely common.

Common Roofing Issues in Semilong

Semilong's housing requires specialist knowledge to maintain correctly. Lime mortar beds on 100-year-old clay tiles need matching correctly when re-bedding — hard cement on Victorian brickwork and tile causes spalling. Lead flashings on these chimneys follow the East Midlands thermal cycle every year and need correctly dressed step-and-cover details, not sealant. Properties that have had repeated low-quality patch repairs over the decades often present us with layers of wrong materials that need undoing before a proper repair can be made.

Free Surveys Across Semilong and NN2

We offer free no-obligation roof surveys across all of Semilong and the surrounding NN2 postcodes. The survey includes a loft inspection, external assessment and a written condition report with a clear recommendation. Call 0160 428 1189 to arrange.

Free Quote — Semilong, Northampton No call-out fee · No obligation · 10-year guarantee
0160 428 1189
All Services

Roofing Services in Semilong

Emergency RooferRoof RepairsRoof ReplacementFlat RoofingGutteringChimney RepairsMoss RemovalLead WorkFascias & SoffitsVelux & RooflightsFlat Roof Repair
Customer Reviews

What Semilong Homeowners Say

★★★★★

"120-year-old terrace with original clay tiles and failed felt. Full re-roof — salvaged 80% of the original tiles, new breathable felt and battens, matching clay for the rest. Exactly as it should look. Took four days."

Anne T. · Euston Road, Semilong — full Victorian re-roof
★★★★★

"Chimney had been leaking for two years — two previous roofers had patched it with sealant and it kept coming back. Northampton Roofing stripped the sealant, re-dressed the lead properly and repointed with lime. Bone dry since."

Paul R. · Clare Street, Semilong — chimney lead flashing and repoint
★★★★★

"Section of slipped clay tiles on the rear slope, ridge mortar crumbling at the front. Both repaired with correct materials. They clearly know what these houses need. Very professional."

Diana K. · Bailiff Street, Northampton — clay tile re-bed and ridge repair
FAQ

Frequently Asked Questions

The vast majority of Semilong properties use clay plain tiles — handmade or early machine-pressed, typically in a red or orange-buff colour with a slight camber. Some properties have Welsh slate on rear slopes or lower outrigger roofs. Both materials require sympathetic repair with matching stock — standard concrete tile is not appropriate.

Lead flashing repair typically costs £200 to £500. Chimney repointing runs £300 to £700. Pot replacement including re-bedding is £150 to £400 per pot. Full chimney surveys are included free with any repair quote. Call 0160 428 1189.

Yes. Where the original specification is lime-based — which is the case on virtually all pre-1920 properties in Semilong — we repoint and re-bed using an appropriate NHL lime mix. Hard cement on Victorian brickwork causes the brick face to spall as thermal movement works against the rigid joint.

In most cases 70 to 80 percent of original clay tiles are salvageable. We sort and grade during the strip and re-use sound tiles. New matching clay tile is sourced to replace broken tiles. The result maintains the original character of the property.

A full re-roof on a standard Semilong terrace costs £6,500 to £11,000 depending on size, roof complexity and chimney configuration. This includes scaffold, strip, new breathable felt, new battens, re-tiling with salvaged and matched clay, ridge and hip re-bed, and chimney lead re-dress. Free no-obligation surveys available.

Yes — same-day and 24/7 emergency cover across Semilong and all NN2 postcodes. Call 0160 428 1189 at any time.

Parts of Semilong fall within or adjacent to conservation-sensitive areas. We advise on any material or planning considerations before specifying work on sensitive properties. For most Semilong terraces, like-for-like clay tile repair and replacement proceeds without planning consent.

Also Covering

Areas Near Semilong

We cover Semilong and all surrounding Northampton suburbs and postcodes.

Roofers St JamesRoofers Far CottonRoofers Northampton town centreRoofers Kingsthorpe
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Free Quote — Semilong, Northampton

No call-out fee. No obligation. Local roofers covering Semilong and all NN2 postcodes.

0160 428 1189 ✉ Email Us Instead

Covering Semilong (NN2) and the surrounding Northampton postcodes.

Roofing in Semilong: Local Knowledge

Semilong (NN2) is characterised by densely-packed Victorian brick terraces with Welsh slate. On Victorian stock like this, the typical roofing calls are predictable, which is exactly why local knowledge helps us diagnose quickly and quote accurately. We know what to look for on a Semilong roof before we set foot on the ladder.

Common Semilong Roofing Issues

On the older terraced stock here, the usual culprits are failed chimney flashing, worn lead in shared and internal valleys, slipped slates, and porous mortar at the ridge — the classic entry points for water on Victorian roofs. The slate itself is often sound and reusable; it is the fixings and details that fail first.

How We Work in Semilong

Every Semilong job starts with a free survey, inside the loft as well as outside, and a written itemised quote — scaffold, materials, labour and VAT all separated. There is no call-out fee, no deposit on repairs under £500, and a written 10-year workmanship guarantee at the end. Most repairs run from a tower or roof ladder; where scaffold or a skip permit is needed on the tighter streets we arrange it through West Northamptonshire Council in advance. As a local firm we turn up when we say and stand behind every job — because our next Semilong customer is usually a recommendation from this one.

Last updated: August 2026

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