Mastic man in Southampton

Mastic and sealant work in Southampton

Southampton’s homes range from Victorian terraces and Edwardian villas to post-war council flats and new waterside apartments. Whatever the building, sealant fails the same way: it shrinks, splits, goes mouldy or comes away, and water gets in. We reseal baths, showers and kitchens, replace window and door mastic, and seal external and floor joints across the city.

A search for a mastic man in Southampton usually starts with one problem joint. We look at the whole room, because a split bath seal often sits next to cracked grout or a leaking tray corner. Where the grout has gone too, regrouting at the same visit makes sense, and you’ll get a clear quote for what needs doing and why.

A port city rebuilt after the war

Southampton was heavily bombed in the Second World War, and large parts of the centre and nearby streets were rebuilt in the decades that followed. That gives the city a lot of post-war housing: council estates, low-rise blocks and towers, many now with replacement windows and refitted bathrooms. The mastic around replacement frames in these blocks is often decades old, hard and cracked.

Away from the bomb damage, Victorian and Edwardian streets survive in places like Shirley, Portswood, Bevois Valley and Freemantle. Many have been split into flats or shared houses. Old timber floors flex under a full bath, so we fill the bath before sealing and use flexible sanitary silicone that can move with it. On bay windows and front doors, we cut out failed mastic and reseal with a weatherproof sealant in a matching colour.

Newer apartments around Ocean Village and the city centre bring modern wet rooms, glass shower screens and large glazed areas. Builders’ sealant in these often fails early. We reseal shower screens and glazing joints with the correct silicone, and wet room edges and floor joints with a sealant that copes with movement.

Our services in Southampton

• Bathroom & kitchen resealing: Baths, showers, basins, wet rooms, worktops and sinks: old sealant cut out, mould treated and a new bead of anti-fungal silicone laid.
• Window & door mastic: Cracked or shrunken mastic around window and door frames, sills and patio doors replaced with a weatherproof sealant.
• Commercial & hotel sealant: Hotels, offices, washrooms and welfare areas resealed room by room, with out-of-hours working possible to arrange.
• Remedial sealant & repairs: Failed, botched or over-sealed joints stripped out, the cause found and the joint resealed properly.
• Fire-rated sealant: Fire-rated and intumescent sealant around gaps, frames and service penetrations, to the product’s tested details.
• External & façade joints: Brickwork movement joints, render and cladding joints resealed with backing rod and flexible exterior sealant.
• 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: Cracked, stained or crumbling grout raked out and replaced, with corners resealed in silicone.
• 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 burnt sand mastic renewed around sash and case windows and doors in stone and brick.

Why Mr Mastic in Southampton

Mr Mastic is based in Crawley and works right across Hampshire. We have 20+ years in the trade, full insurance and ARBOMaster approved applicator status, and we use Arbo and Everbuild sealants. Customers have given us a 4.9-star Google rating, with more than 180 five-star reviews. You’ll get a fixed price before we start, and every job is covered by our 12-month guarantee.

Around Southampton

From the centre, the nearest railway station is St Denys station. Well-known places nearby include Marlands Shopping Centre (1 mile south-west), Royal South Hants Hospital (less than half a mile south) and R J Mitchell Museum (0.9 miles south-west). Around the centre, our work takes us to homes, rentals and businesses close to Bevois Town Primary School, St Anne's Catholic School, St Mary's Independent School and Saint Mary's. Green spaces within reach include Netley Common.