New Roofs Earlsfield

• Tranmere Road & Strathville Road Terraces (SW18): Victorian worker cottages and purpose-built maisonettes. Re-roofing focuses on natural Welsh or Grade-A Spanish slate overhauls, structural outrigger timber sistering, party-wall firewall rebuilds, and breathable membrane underlayment.

• Magdalen Road & "Toastrack" Fringe (SW18): Substantial Edwardian family residences featuring expansive dual-pitch roofs and decorative timber gables. Re-roofing demands authentic natural slates or plain clay tiles, Code 5 lead valleys, and warm-roof insulation upgrades.

• Garratt Lane & Summerstown Corridor (SW18): High-density Victorian commercial and residential streetscapes requiring natural slate overhauls, party-wall bonding gutters against adjoining properties, and heavy-duty lead back gutters.

• Earlsfield Road & St Ann’s Hill Borders (SW18): Large Victorian villas with complex roof geometries, dormer windows, and multi-flue chimney junctions requiring bespoke Code 5 lead fabrication and ventilation upgrades.

Structural Rafter Sagging on Victorian Rear Outriggers

The rear two-story tenement additions ("back additions") characteristic of Earlsfield terraces carry heavy slate loads over long, unsupported spans. Over 120+ years of dead weight and unseen valley leaks, original 3x2-inch softwood rafters deflect and bow, creating an uneven, sagging roofline. When our six-man team strips your roof to bare timbers, we evaluate every structural joist, sistering bowed rafters with treated C24 timber and reinforcing valley boards to create a completely flat, rigid deck before laying new slates.

"Nail Sickness" & Corroded Fixings on Historic Slate Roofs

Many Victorian properties across Earlsfield still feature original slate roof coverings installed with iron nails. After more than a century, these nails corrode through—a failure known as "nail sickness." Individual slates slip out of line, exposing the degraded bitumen felt underneath to driving rain. During a complete re-roof, our crew strips the covering to bare rafters, replaces failing battens, installs high-performance breathable roofing membranes, and secures every new slate with corrosion-proof copper nails.

Party-Wall Bonding Gutters between Divided Maisonettes

In Earlsfield, many terraced properties are divided into upper and lower maisonettes, often with adjoining neighbors who are not replacing their roof at the same time. Connecting a new natural slate roof to an adjoining weathered slate covering requires expert junction detailing. We construct clean, weatherproof bonding gutters or shared lead valleys along the party wall line, ensuring a seamless, watertight junction without disturbing your neighbor’s roof slates.

Executing a full re-roof on a dense residential street in Earlsfield requires careful structural management and weather protection:

• Phase 1: Safe Access Engineering & Weather Protection: We arrange all necessary access planning and erect secure, independent perimeter scaffolding equipped with protective debris netting. Exposed areas are managed in weather-monitored daily sections to keep your home 100% watertight throughout.

• Phase 2: Outrigger Timber Sistering & Firewall Upgrades: Old slates, battens, and degraded underlay are stripped to bare rafters. We sister deflected rafters with treated C24 timber, replace water-damaged valley boards between rear outriggers, and rebuild crumbling party-wall brick firebreaks to modern UK fire safety standards.

• Phase 3: Part L Thermal Envelope & Breathable Membrane Sealing: We install high-density insulation across ceiling joists to comply with UK Building Regulations (Part L). The roof skeleton is then sealed with a heavy-duty, vapour-permeable breathable membrane and factory-graded 25x50mm BS5534 treated battens.

• Phase 4: Precision Slate Laying, Leadcraft & Handover: Premium natural slates are hand-fixed to exact gauge lines using copper fixings. Code 5 milled lead is bossed on-site for outrigger valleys, chimney flashings, and party-wall junctions. Ridge tiles are bedded, scaffolding is removed, the site is cleared, and your 25-year CORC insurance-backed guarantee certificate is issued.

Do I need planning permission for a new roof in Earlsfield?

Like-for-like roof replacements using matching authentic materials (such as natural slate and clay ridge tiles) generally fall under Permitted Development and do not require formal council planning permission. We advise on Wandsworth Council building guidelines during our free survey.

How do you handle shared party-wall roof sections with neighbors in a maisonette?

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 Earlsfield 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.