IKO SINGLE-PLY & EPDM FLAT ROOFS IN ST JOHN’S WOOD NW8
Detached Regency and Victorian villas along Avenue Road, Hamilton Terrace, and Acacia Road, alongside expansive mansion blocks bordering Prince Albert Road and Circus Road, rely on large crown decks, rear ground-floor extensions, and garage roofs that demand faultless waterproofing. On our St John’s Wood residential refurbishment shown here, London Roofing Specialist acted as the principal flat roofer, stripping the perished covering to install an IKO polymeric single-ply membrane and vulcanised EPDM rubber over a high-density Part L warm roof assembly.
Call our local office today for a free, no-obligation St John’s Wood flat roof survey: 020 7205 4557
150mm Warm Roof Insulation, Tapered Firrings & Skylight Kerbs
Before laying any waterproof membrane in NW8, our roof carpenters inspect the exposed C24 joists for wet rot, fit graduated timber firring strips to create a positive 1:40 drainage fall, and screw down 18mm WBP marine plywood decking. Over a continuous foil-faced vapour control layer, we bond 150mm rigid PIR thermal insulation boards and construct insulated timber upstand kerbs for architectural glass skylights—flooding the rooms below with natural daylight while cutting winter heat loss.
ROOFTOP PLANT HOUSING, WARM DECKS & 10-YEAR GUARANTEES
High-end NW8 residences frequently carry rooftop cold water storage tanks, air-conditioning condensers, and multiple skylight penetrations that leak when detailed with inferior torch-on felt. We engineer custom flat roof build-ups using flame-free, manufacturer-approved membranes.
IKO Armourplan & Sika Sarnafil Single-Ply
Hot-air welded polymeric membranes offering crisp architectural detailing, high UV reflectance, and complete immunity to standing rainwater.
Custom Water Tank Housing & Plant Upstands
Weatherproof timber housing and welded membrane upstand collars encapsulating rooftop cold water tanks, extractors, and service conduits.
One-Piece & Fleece-Backed EPDM Rubber
Cold-applied synthetic rubber membranes laid without naked gas flames across NW8 rear extensions, garages, and box dormers.
Part L Warm Roof Thermal Upgrades
High-compressive rigid PIR insulation boards that eliminate cold bridging, interstitial condensation, and summer solar overheating.
Stepped Code 5 Lead Parapet Flashings
Hand-bossed lead counter-flashings wedged and pointed into brickwork parapet walls and chimney abutments.
Frequently Asked Questions: Flat Roofer St John’s Wood NW8
Can you weatherproof rooftop water tank housing when replacing a flat roof in St John’s Wood?
Yes. On our St John’s Wood project, we built and weatherproofed a custom insulated housing enclosure for the property’s rooftop water tank as part of the main IKO polymeric flat roof installation. Sealing the tank housing, pipe penetrations, and main deck with one continuous hot-air welded membrane eliminates the weak joints that cause leaks on large NW8 homes.
Do you use naked gas flames on St John’s Wood conservation properties?
Never. We ban naked bitumen gas torches near dry period roof timbers. Every IKO single-ply, Sika Sarnafil, EPDM rubber, and liquid polyurethane system we install in NW8 is either hot-air welded or cold-applied, backed by a 10-year insurance-backed workmanship guarantee and full public liability insurance. View our wider portfolio at https://londonroofingspecialist.co.uk/projects/all/.
