Greater London · England
Mastic man in Sutton
Bath, shower and window resealing across Sutton, from Carshalton’s village streets and St Helier’s cottage estate to Worcester Park semis and new flats.
- Anti-fungal silicone as standard
- 20+ years in the trade
- Guaranteed for a year
Mastic and sealant work in Sutton
Sutton is a borough of family houses and gardens, with a busy town centre and a growing number of flats near the stations. If the sealant around your bath has turned black, the shower tray has started to weep or the mastic around a window has cracked, we can help. Mr Mastic is based in Crawley and covers the whole of the London Borough of Sutton, a short run up the A217 and A23.
The method never changes. We cut out every trace of the old sealant, clean the joint, let it dry and lay one neat bead of the right product. Silicone laid over silicone peels away within weeks, so we never take that shortcut. If black spots keep coming back on your seals, our guide to why sealant goes mouldy explains what is really going on.
Villas, cottage estates and interwar semis
Sutton’s housing was built in waves. Wallington still has imposing Victorian and Edwardian villas along roads such as Clifton Road, Belmont Road and Park Road, and the borough protects older streets in conservation areas including Carshalton Village, Cheam Village, Wallington Green and Sutton Garden Suburb. In these older houses, bathrooms have usually been refitted several times, and we often find baths that have dropped slightly on old floors, leaving a gap that a thin bead can’t bridge. A deeper joint, backed where needed, is the fix.
Between 1928 and 1936 the London County Council built the St Helier estate, which is split between Sutton and Merton. Worcester Park was largely built up in the 1920s and 1930s too. Houses from this period often have replacement uPVC windows fitted decades ago, and the mastic around the frames has gone hard and pulled away from the brick. We cut it out and apply a flexible, weatherproof sealant in a colour to suit the frame.
Newer homes bring a different set of jobs. BedZED in Hackbridge was built in 2000 to 2002, and The Hamptons in Worcester Park was completed in 2021. Builders’ sealant in new homes often splits in the first couple of years as the structure settles, which our new build mastic page covers in more detail.
Semis, flats over shops and access in Sutton
Most Sutton jobs are in houses, which keeps things simple: we can usually park close by and work on a bathroom or kitchen in a few hours. Flats are a growing share of our work here, though, especially around Sutton town centre and the High Street, where many homes sit above shops. A failed shower seal in a flat over a shop can stain a ceiling below before anyone notices, so we check the corners of the tray, the screen edges and the bath-to-wall joint carefully.
In conservation areas such as Carshalton Village, timber windows are common. Painted timber moves more than uPVC, so we choose a sealant that stays flexible and can be painted where the frame needs it. For external joints above ground floor we always talk through safe access before quoting.
Hospitals, care homes and Sutton landlords
Sutton is home to St Helier Hospital and the Royal Marsden’s Sutton site in Belmont, and the care homes, clinics and rented rooms around large hospitals all need sanitary sealant kept in good order. Healthcare settings need anti-bacterial products and a tidy, well-planned visit; our healthcare sealant page explains how we work in them.
We also reseal for landlords and letting agents with homes across Sutton, Cheam and Carshalton, often between tenancies when black or peeling sealant is the first thing a new tenant sees. Shops and offices in Sutton town centre can be booked early or out of hours by arrangement.
From first call to finished joint
- Call or email. Tell us what needs doing, where it is and anything about access. Photos by email help.
- Quote and booking. We quote clearly before anything starts and fix a day that works for you.
- Cut out and prepare. All the old sealant comes out, and the joints are cleaned, treated and dried.
- Seal and finish. The right sealant for each joint is applied and tooled to a neat, even finish.
- Guaranteed work. You’ll know the cure time before we leave, and every job comes with a one-year guarantee.
Sealant services across Sutton
- 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: Hardened, gappy mastic around frames, sills and French or patio doors cut out and renewed to keep draughts and rain out.
- Commercial & hotel sealant: Commercial washrooms, kitchens and wet areas resealed floor by floor, so only a few rooms are out of use at once.
- Remedial sealant & repairs: Messy, layered or wrong-product sealant cut out and replaced with the right sealant, laid the right way.
- Fire-rated sealant: Gaps in fire-separating walls and floors sealed with fire-rated products, following the tested details for each one.
- 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: New-build bathrooms, kitchens and frames resealed where the original sealant has cracked as the house settles.
- Floor & skirting joints: Floor and skirting joints in homes, shops and warehouses sealed neatly and to the right depth.
- Regrouting: Cracked, stained or crumbling grout raked out and replaced, with corners resealed in silicone.
- Glazing & conservatory sealant: Glazing joints on conservatories, roof lanterns and screens renewed with a sealant suited to glass and frames.
- 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 Mr Mastic in Sutton
We have been resealing bathrooms, kitchens and windows for more than 20 years, and Sutton sits comfortably within our patch. Mr Mastic is fully insured and an ARBOMaster approved applicator, and we use Arbo and Everbuild sealants chosen for each joint. Over 2,847 projects and a 4.9-star Google rating from more than 180 five-star reviews say the work holds up. You will know the cost from a clear quote before we begin, and the finished job carries a one-year guarantee.
Places we pass in Sutton
From the centre, the nearest railway station is Sutton (London) station. Local landmarks include The Ashley Centre (4 miles south-west), Honeywood Museum (1.3 miles east) and Chessington Castle Hill (4.2 miles west). Around the centre, our work takes us to homes, rentals and businesses close to Robin Hood Junior School, Sutton Grammar School, Sutton College of Learning for Adults and St Nicholas Church. For open space, Devonshire Avenue Nature Area and Duppas 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.”
“Harper Drive in Maidenbower — kitchen worktop had been leaking behind for a while. Came out the next day, sorted it properly. Really tidy job.”
“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.”
Areas of Sutton we cover
Pick your area for local details, or call 07833 053749 or email us with your postcode.
- Belmont
- Benhilton
- Carshalton
- Cheam
- Lower Morden
- Morden
- North Cheam
- Rosehill
- Shanklin Village
- St Helier
- Sutton Common
- The Wrythe
- Wallington
Nearby towns we cover
Sutton: common questions
Do you cover all of Sutton?
Yes. We work across the borough, including Sutton town centre, Cheam, Carshalton, Wallington, Worcester Park, Belmont, Hackbridge and St Helier.
My 1930s semi has old uPVC windows. Can you redo the mastic?
Yes. We cut out the hardened mastic, clean the joint and apply a flexible, weatherproof sealant in a colour to match the frames.
We live in the Carshalton Village conservation area. Can you seal timber windows?
Yes. We use flexible sealants that suit painted timber and can be painted over where needed, so the window keeps its look.
The sealant in our Worcester Park new build has already cracked. Is that common?
It is. New homes settle and showers get daily use, so builders’ sealant often fails early. We remove it, prime where needed and reseal.
Do you work in care homes near the Sutton hospitals?
Yes. We use anti-bacterial sanitary sealant and plan the visit around residents and staff.
I let a flat above a shop on Sutton High Street. Can you reseal between tenants?
Yes. Tell us the dates the flat is empty and we’ll fit the job in, with a clear quote first.
How long until I can use the bath again?
Usually around 24 hours, depending on the product. We’ll tell you the cure time before we leave.