Mastic man in Wandsworth

Sealant jobs we do in Wandsworth

Wandsworth is a borough of terraced streets, converted flats and fast-growing riverside developments, and every one of them has joints that eventually need resealing. Mr Mastic travels up from our Crawley base to cover all of it, from Putney and Roehampton in the west to Battersea and Nine Elms in the east.

Most calls start with a bathroom. Shower trays that have dropped slightly, bath seals gone black at the corners, or a gap behind the kitchen tap where the worktop meets the tiles. We cut out every trace of the old sealant, clean and prepare the surface, then apply anti-fungal sanitary silicone in a colour to match. If your shower seal has started to leak, it’s worth dealing with quickly, especially in a flat with neighbours below.

Victorian terraces, pioneering estates and riverside towers

Large parts of Wandsworth are Victorian and Edwardian terraced streets, and some of it was groundbreaking in its day. In Battersea, the Shaftesbury Park Estate was built between 1873 and 1877, about 1,200 two-storey workers’ houses. In Tooting, the Totterdown Fields estate, built between 1901 and 1911, was the London County Council’s first cottage estate, with 1,244 houses, and has been a conservation area since 1978. In houses of this age, bathrooms are usually later additions, often squeezed into a back room or extension, so the walls and floors beneath them move more than you would expect.

In Roehampton, the Alton Estate was built by the LCC in the 1950s, a mix of low-rise homes and tall slab blocks, five of which are Grade II* listed. Flats like these have concrete walls, metal or replacement window frames and stacked bathrooms, so a single failed joint can affect several homes.

The newest housing is along the river. Nine Elms has been transformed with high-rise apartments, Embassy Gardens is planned to provide up to 1,982 homes, and Battersea Power Station reopened in 2022 with homes, shops and offices. In new flats, developer sealant often cracks as the building settles; see our new build mastic page.

Jobs we take on in Wandsworth

• Bathroom & kitchen resealing: Every joint in the bathroom and kitchen, from the bath edge to the worktop, stripped back and resealed with anti-fungal silicone.
• Window & door mastic: Frame perimeters inside and out resealed with flexible, colour-matched sealant, with backing rod where the gap is deep.
• Commercial & hotel sealant: Sealant programmes for offices, hotels, care settings and schools, with early or late working where it helps.
• Remedial sealant & repairs: Failed, botched or over-sealed joints stripped out, the cause found and the joint resealed properly.
• Fire-rated sealant: Intumescent and fire-rated joints around pipes, cables and frames, installed to the manufacturer’s tested specification.
• External & façade joints: Expansion joints in brick, render and cladding cut out and renewed at the right depth so they can move without splitting.
• New-build mastic & snagging: Failed builder sealant in new homes put right, and plot mastic for developers.
• Floor & skirting joints: Skirting-to-floor gaps, tiled floor movement joints and concrete floor joints sealed with the right product.
• Regrouting: Shower and splashback grout replaced where it has cracked or stained, with silicone in the movement joints.
• Glazing & conservatory sealant: Conservatory, rooflight, glass panel and shower screen joints resealed with glazing silicone.
• Gutter, fascia & soffit sealing: Leaking gutter joints, end caps, fascia and soffit joints resealed with exterior sealant.
• Sand mastic for sash & case windows: Traditional sand mastic for period windows and doors where a modern sealant would look out of place.

Why choose Mr Mastic in Wandsworth

A reseal is a small job, but it’s easy to do badly. We’ve spent over 20 years doing it properly and have 2,847+ projects behind us, with a 4.9-star Google rating from more than 180 five-star reviews. Mr Mastic is fully insured and an ARBOMaster approved applicator, and we use Arbo and Everbuild sealants. You’ll have a clear quote before any work starts, and if anything isn’t right within a year, our one-year guarantee covers it.

Landmarks near Wandsworth

For trains, Wandsworth Town station is closest to the centre. Local landmarks include Southside Wandsworth (less than half a mile west) and Antique Breadboard Museum (1.4 miles north-west). Closer in, we work on homes, rented flats and businesses near St Anne's CofE Primary School, Ashcroft Technology Academy, Emanuel School and St Anne's Church. For open space, Wandle Meadow Nature Park and Henman Hill are close by.