New Roofs Wandsworth

• The Tonsleys (SW18): Tightly built Victorian worker terraces. Re-roofing requires natural Welsh or Spanish slate overhauls, party-wall firewall rebuilds, hand-bossed lead soakers, and central butterfly valley reconstructions.

• Wandsworth Town Conservation Area & East Hill (SW18): Georgian townhouses and early Victorian residences. Re-roofing demands genuine Welsh SVT slate, Code 5 lead dormer cheeks, parapet gutter overhauls, and period-compliant ridge capping to meet Wandsworth heritage controls.

• Wandsworth Common & West Hill (SW18): Grand Victorian and Edwardian villas. Re-roofing focuses on handmade clay plain tiles, natural Welsh slate, heavy-duty rafter reinforcement, Code 5 lead valleys, and period ridge capping.

• Southfields Borders & Earlsfield Fringe (SW18): Inter-war semi-detached houses and converted properties where original bitumastic underlay felt has turned brittle, requiring complete tile stripping, new treated batten runs, and dry-verge capping.

Heritage Compliance in Wandsworth Town Conservation Zones

Properties located within designated conservation zones across Wandsworth Town, East Hill, and Spencer Park are subject to strict heritage guidelines enforced by Wandsworth Council. Replacing an authentic natural slate or clay tile roof with synthetic options can trigger enforcement notices. We source genuine SVT Welsh Slate, Grade-A Spanish slate, and handmade clay plain tiles, pairing them with traditional leadwork and mortar-bedded ridge caps to ensure 100% compliance and a 75+ year operational lifespan.

Butterfly Valley & Party-Wall Firewall Rebuilds in Tonsley Terraces

Victorian "butterfly" roof structures throughout The Tonsleys feature two roof slopes dipping inward toward a central lead valley gutter. Over a century, the timber valley boards beneath the lead rot due to hidden leaks, causing the valley to sag. During a full re-roof, our six-man team strips the slates back, replaces rotted valley decking, rebuilds party-wall firebreaks to modern fire safety standards, and lays continuous Code 5 lead valley liners.

Rafter Sistering & Timber Load Upgrades under Heavy Slate/Tile Loads

The grand sweeping roofs across Wandsworth Common and West Hill were originally clad in heavy slates or plain clay tiles. Over a century of sustained dead weight combined with moisture absorption causes original softwood rafters to bow and sag. When our six-man team strips your roof to bare timbers, we evaluate every structural joist, sistering bowed rafters with treated timber and reinforcing hip beams to guarantee a perfectly flat, structurally sound foundation before laying new tiles.

A complete pitched roof replacement on a standard Wandsworth villa or terrace typically takes 5 to 10 working days, weather permitting:

1. Scaffolding Setup: Full, safe perimeter scaffolding is erected around your property to provide secure working access for our six-man team.

2. Stripping to Bare Timbers: Existing tiles or slates, old battens, and degraded underlay are stripped away down to bare rafters and loaded into skips.

3. Timber Inspection & Structural Repairs: Rafters, wall plates, and valley boards are checked for rot or sagging, with compromised timbers cut out and replaced.

4. Breathable Membrane & Treated Battens: Modern breathable underlayment and counter-battens are secured to current Building Regulations standards (Part L).

5. Tile or Slate Precision Laying: Your chosen natural slates, clay tiles, or concrete tiles are laid to precise weather-tight gauge lines.

6. Leadwork & Ridge Finishing: Hand-bossed Code 4 and Code 5 lead aprons, step flashings, side soakers, and dry-ridge or mortar-bedded caps are installed.

7. Scaffolding Dismantling & Site Clearance: All site waste is removed, scaffolding comes down, and your 25-year CORC insurance-backed guarantee certificate is issued.

Do I need planning permission for a new roof in Wandsworth Town Conservation Area?

Like-for-like roof replacements generally fall under Permitted Development and do not require planning permission. However, because Wandsworth Town is a designated conservation area, material approvals apply. We ensure all slates, clay tiles, and leadwork match local heritage guidelines during our free survey.

How do you handle shared party-wall roof sections with neighbors in The Tonsleys?

We liaise with your neighbor before work begins. We install clean bonding gutters or shared lead valleys along the party line, ensuring a seamless, watertight junction between your new roof covering and the adjoining property.

Do I have to upgrade my loft insulation when getting a new roof in SW18?

Yes. Under UK Building Regulations (Part L), replacing more than 50% of your roof covering requires upgrading loft thermal insulation to current standards (typically 270mm). We incorporate this directly into our itemized written quotes.

What happens if rain falls while my roof is stripped off?

We strip roofs in manageable daily sections. At the end of every working afternoon, exposed timbers are completely covered and sealed with high-grade, waterproof breathable membrane, keeping your home 100% watertight throughout the project.

Are your on-site roof surveys in Wandsworth completely free?

Yes. John Quilligan visits your property in SW18 in person, inspects the roof structure, loft timbers, and chimney leadwork, and provides a clear, itemized written estimate with zero call-out charges.