East Sussex · England

Mastic man in Hastings

Sealant work for Hastings and St Leonards: steep Old Town cottages, Regency crescents, seafront flats and rented homes, resealed properly from the joint up.

  • Fully insured
  • Arbo and Everbuild sealants
  • Clear quote before we start

Sealant work in Hastings: call for a quick quote

Your local mastic man for Hastings

Hastings is a town of hills, old timber and sea wind, and its sealant works hard. If you need a mastic man in Hastings or St Leonards-on-Sea, Mr Mastic covers the whole area from our base in Crawley. We reseal baths, showers, sinks and kitchen worktops, renew mastic around windows and doors, and seal joints on walls, sills and frames where rain has started to find a way in.

On every visit, the failed sealant is removed in full and the joint is cleaned, treated for mould and dried. Only then do we lay the new bead. Covering old silicone with new is a common shortcut, and it never holds, so it is something we simply do not do. You will know the price before we start and what to expect afterwards.

From the Old Town to Burton’s St Leonards

The Old Town sits in a narrow valley between the East Hill and West Hill, below the castle ruins. Its older houses and cottages lean, settle and move, and bathrooms squeezed into them are often on timber floors that flex underfoot. A stiff bead of sealant soon tears in those conditions, so we use a flexible sanitary silicone and fill the bath before sealing so the bead is laid with the bath at its heaviest. Down on the Stade, the tall black timber net shops are a reminder of how much weather this end of town takes.

To the west, St Leonards-on-Sea was laid out in the early nineteenth century by the builder James Burton and his son Decimus Burton as a new town for well-off visitors, and Pelham Crescent was built below the castle cliffs after the Napoleonic Wars. Many of these stuccoed terraces and villas are now flats, with sash and bay windows that rely on mastic between frame and render. Our window mastic guide explains why that joint fails and how we renew it.

The town also has twentieth-century landmarks such as Marine Court, the 1938 Art Deco block on the St Leonards seafront, and suburbs like Ore, Hollington and Silverhill that were once separate villages. Their later housing brings the usual mix of ageing uPVC frames, refitted bathrooms and kitchens with tired sealant round the sink.

Mr Mastic applicator kneeling beside a white bath, sealing the joint where the bath meets beige wall tiles
Mr Mastic applicator kneeling beside a white bath, sealing the joint where the bath meets beige wall tiles
Map of Hastings © OpenStreetMap contributors

Channel weather on an exposed, hilly coast

Hastings has a mild maritime climate and sits on the eastern edge of the sunniest stretch of the English coast. Homes perched on the hills and cliffs above the sea catch the full force of the wind, and rain driven sideways tests every window and door joint. Salt in the air and strong sun on south-facing elevations dry external sealant out until it cracks. We use weatherproof, flexible sealants outside and set the joint depth correctly so it can move without splitting.

Landlords, healthcare and guest accommodation

Hastings has a large private rented sector, with many of its period houses split into flats. Landlords and letting agents call us between tenancies, or when a tenant reports black mould or water coming through a ceiling. Our landlord sealant page explains how we handle several properties at once.

The Conquest Hospital is the main hospital for the area, and the care homes, clinics and supported housing around the town all have washrooms and wet rooms where hygienic sealant matters. We also work for guest houses, holiday lets and schools, and our healthcare sealant page sets out our approach for clinical settings.

What happens when you book

  1. Tell us about the job. A quick call or email with what needs sealing and where. Photos help us quote accurately.
  2. Agree the price. You get a clear quote up front, and we book a date that suits you.
  3. Cut out and prepare. All the old sealant comes out, and the joints are cleaned, treated and dried.
  4. Seal and finish. The right sealant for each joint is applied and tooled to a neat, even finish.
  5. Cure and guarantee. We tell you when it can be used, and every job has our one-year guarantee.

Sealant services across Hastings

  • 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: Frame perimeters inside and out resealed with flexible, colour-matched sealant, with backing rod where the gap is deep.
  • Commercial & hotel sealant: Guest bathrooms, staff washrooms and kitchens in commercial buildings resealed in a planned order that keeps the site running.
  • Remedial sealant & repairs: Leaks and lifting beads from earlier sealant jobs put right, starting with finding out why they failed.
  • Fire-rated sealant: Fire-rated sealant for service penetrations and frame gaps where it has been specified, applied to the tested details.
  • 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: Snagging sealant for new homes and plot-by-plot mastic for builders and developers.
  • Floor & skirting joints: Gaps under skirting boards, tile movement joints and concrete floor joints sealed with a product that suits the traffic.
  • 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: Dripping gutter joints and end caps, and gaps at fascias and soffits, sealed with weatherproof exterior sealant.
  • Sand mastic for sash & case windows: Old sand mastic around sash windows and doors raked out and renewed with traditional burnt sand mastic.

Why choose Mr Mastic in Hastings

Older, weather-exposed buildings punish poor workmanship, which is why we take our time on preparation. Behind every Hastings job is a firm with over two decades of experience, full insurance and ARBOMaster approved applicator status. We seal with Arbo and Everbuild products, have completed more than 2,847 projects and hold a 4.9-star rating on Google from over 180 five-star reviews. You get a clear quote up front, and a one-year guarantee covers the finished work.

Around Hastings

From the centre, the nearest railway station is St Leonards Warrior Square station. Local landmarks include Priory Meadow Shopping Centre (1.1 miles south-east), The True Crime Museum (1.1 miles south-east) and Hastings Castle (1.3 miles south-east). Closer in, we work on homes, rented flats and businesses near St Paul's Church of England Academy, William Parker Sports College, University School and St Luke's Church. For open space, Church Wood and Robsack Wood and Senlac Hill are close by.

What customers say

Rated 4.9 on Google from 180+ five-star reviews. Read the reviews on Google.

★★★★★
“New build in Forge Wood — shower seal had failed after 16 months. Mr Mastic came out quickly, removed everything and did it properly. Perfect finish and no more leaks.”
Anna P., Forge Wood, Crawley
★★★★★
“Harper Drive in Maidenbower — kitchen worktop had been leaking behind for a while. Came out the next day, sorted it properly. Really tidy job.”
Sarah K., Harper Drive, Maidenbower
★★★★★
“Called for a bathroom reseal and the mastic man showed up on time with all the right equipment. Brilliant attention to detail. The sealant looks perfect and they kept everything tidy.”
Sarah Elizabeth, Essex
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job

Questions from Hastings

Do you cover St Leonards-on-Sea as well as Hastings?

Yes. We cover Hastings, St Leonards, Ore, Hollington, Silverhill and the surrounding area.

My Old Town cottage floor moves and the bath seal keeps tearing. Can you fix it?

Yes. We use a flexible sanitary silicone and seal with the bath filled, so the bead copes with the movement much better.

Can you reseal around sash windows in a Regency terrace?

Yes, where the frames can be reached safely. We cut out the old mastic and choose a sealant to suit both the timber and the stucco.

Do you work for Hastings landlords and letting agents?

Yes. We reseal between tenancies and after mould or leak reports, and can quote for several flats together.

Why does my hilltop house get water round the windows in storms?

Exposed homes face wind-driven rain, and once old mastic shrinks or cracks the water gets behind the frame. New flexible sealant closes that gap.

Do you reseal in care homes and clinics?

Yes. We use anti-bacterial and anti-fungal products and plan the work around residents, patients and staff.

Is the work guaranteed?

Yes. Every job comes with our one-year guarantee.

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