Mastic man in Chelmsford

Mastic and sealant work in Chelmsford

Chelmsford became a city in 2012, as part of the Queen’s Diamond Jubilee celebrations, and new homes have kept going up around it. We cover the whole city and the rest of Essex, resealing baths, showers and kitchens, replacing window and door mastic and sealing joints in homes and businesses. Typical jobs include a mouldy bath seal, a leaking en-suite tray, a kitchen worktop where water has crept behind the upstand, or uPVC windows whose mastic has cracked and gone grey.

Our approach is straightforward. We cut out the old sealant, clean and dry the joint, treat any mould and lay a new bead of the right product. If the grout is failing too, we’ll say so, because a new seal next to cracked grout won’t stop water getting in.

Commuter homes, old and new

Chelmsford is a commuter city, with trains to London Liverpool Street, and its housing reflects decades of growth. Near the centre there are Victorian and Edwardian terraces and villas. Around them sit large areas of 1930s, post-war and later housing, much of it now with replacement windows, refitted bathrooms and ageing sealant.

On the edges of the city, large new-build estates have added thousands of homes. New houses settle, timber dries out and showers get daily use, so builder sealant often fails within a year or two. We cut out the original sealant, prime where needed and reseal. For new-home owners, our guide to new-build sealant snags lists what to check.

Family bathrooms and en-suites need the most attention. Shower trays in en-suites are a common leak point, because a small gap at the tray edge lets water reach the floor and the ceiling below. We check the tray, enclosure and wall joints, not just the obvious bead. Around kitchen worktops and sinks, we use a sealant suited to kitchens, colour-matched where it shows and food-safe beside the sink where it’s needed.

Our services in Chelmsford

• 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 Chelmsford

Mr Mastic is based in Crawley, and Essex is part of our regular area. We have 20+ years of experience, full insurance and ARBOMaster approved applicator status, and we use Arbo and Everbuild products. With 2,847+ projects completed and a 4.9-star rating on Google, you’re in good hands, and every job carries a one-year guarantee. You’ll have a clear quote before any work starts.

Around Chelmsford

From the centre, the nearest railway station is Chelmsford station. Well-known places nearby include Bond Street Chelmsford (0.5 miles south-west), Priory Hospital (less than half a mile north) and Peter Edwards Museum And Library (0.8 miles south-west). Around the centre, our work takes us to homes, rentals and businesses close to Trinity Road Primary School, The Boswells School, Chelmsford College and Church of the Holy Trinity. Green spaces within reach include Newland Grove.