Thurrock · England
Mastic man in Chadwell St Mary
Resealing for Chadwell St Mary’s family homes, tower block flats and new council homes, on the ridge above Tilbury in Thurrock.
- 20+ years’ experience
- ARBOMaster approved applicator
- One-year guarantee
Sealant jobs we do in Chadwell St Mary
Chadwell St Mary sits on a ridge about 100 feet above the old marshes, a mile north of Tilbury and a couple of miles east of Grays. Around 10,700 people live in the built-up area, mostly in houses, bungalows and flats built from the post-war years onwards. Mr Mastic covers Chadwell St Mary from our base in Crawley, renewing sealant in bathrooms and kitchens and around windows and doors.
The jobs we see in homes like these are practical ones. A bath seal that has lifted. A shower screen with a gap at the base. Kitchen sealant behind the sink that has gone grey and soft. Each is handled the same way: the old sealant is fully removed, the joint is cleaned, treated and dried, and a new bead goes on with a product chosen for that joint, whether that is a mould-resistant silicone in a shower or a flexible, weatherproof mastic around a front door. Our guide on why sealant goes mouldy explains why we never seal over the top.
Post-war homes, towers and new council building
The oldest building in Chadwell is St Mary’s Church, Grade I listed and probably dating from the 12th century, standing at the crossroads overlooking the marshes. A handful of older listed houses survive, including Biggin Farmhouse and Chadwell Place, but most of the village was built in the 20th century. Prefabricated houses went up north of the church straight after the Second World War, and housing spread across the ridge in the decades that followed.
There are also three council tower blocks in Chadwell, holding 273 flats, which Thurrock Council has planned to connect to a shared ground source heat pump system. More recently, the council’s Claudian Way scheme, built by United Living and finished in 2021, added 53 homes: 22 flats, 10 houses and 21 bungalows, 16 of them with wet rooms. Seven more council homes are being built on a former garage site at Vigerons Way, with completion expected in 2027.
Older family homes here usually have refitted bathrooms and replacement windows, and the sealant on both is often at the end of its life. In the newer homes, the first sealant tends to fail early as the building settles.

High-rise flats, wet rooms and exposed gables
In tower block flats, a failed bath or shower seal can soak through to the flat below and cause problems for neighbours long before the source is found. We can book through the council or a managing agent, bring tools up in the lift and work quietly in occupied homes. Wet rooms, such as those in the Claudian Way bungalows, need a different approach to a standard shower, and our page on wet room sealing explains how we seal floor-to-wall joints.
Being on a ridge, Chadwell catches the wind, and mastic around windows and doors on exposed sides wears out sooner. We cut it out fully and replace it with a flexible, weatherproof sealant.
Schools, shops and rented homes
Chadwell has a run of local shops and services, along with schools including Chadwell St Mary Primary, Herringham Primary and The Gateway Academy, which it shares with Tilbury. Buildings like these have toilets, kitchens and changing areas that need hygienic sealant renewed during holidays or out of hours.
Private landlords and letting agents use us to reseal bathrooms and kitchens between tenants, and our landlord sealant service explains how we work around check-outs.
How it works
- Tell us about the job. A quick call or email with what needs sealing and where. Photos help us quote accurately.
- Agree the price. You get a clear quote up front, and we book a date that suits you.
- Cut out and prepare. All the old sealant comes out, and the joints are cleaned, treated and dried.
- Neat new sealant. Each joint gets the sealant that suits it, laid and smoothed to a tidy finish.
- Leave it to cure. We tell you how long to leave it before use, and the work carries our one-year guarantee.
Sealant services across Chadwell St Mary
- Bathroom & kitchen resealing: Mouldy or split sealant around baths, shower trays, basins and sinks removed completely and replaced with a neat, hygienic bead.
- Window & door mastic: Cracked or shrunken mastic around window and door frames, sills and patio doors replaced with a weatherproof sealant.
- 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: Second opinions on sealant that keeps failing: we strip it out, check for movement or leaks and reseal it properly.
- 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: Early-failing sealant in new homes fixed properly, plus mastic packages and snagging for developers.
- Floor & skirting joints: Floor and skirting joints in homes, shops and warehouses sealed neatly and to the right depth.
- Regrouting: Shower and splashback grout replaced where it has cracked or stained, with silicone in the movement joints.
- Glazing & conservatory sealant: Glass-to-frame joints on conservatories, rooflights and shower screens cut out and resealed.
- Gutter, fascia & soffit sealing: Exterior joints at gutters, fascias and soffits resealed to stop drips and staining down the wall.
- Sand mastic for sash & case windows: Traditional sand mastic for period windows and doors where a modern sealant would look out of place.
Why Mr Mastic in Chadwell St Mary
Whether it is a tower block flat or a family semi, we do the job properly and tidy up after ourselves. Mr Mastic has been sealing homes for 20+ years, is fully insured and is an ARBOMaster approved applicator using Arbo and Everbuild products. More than 2,847 projects and a 4.9-star Google rating from 180+ five-star reviews back that up. We give a clear quote up front, and each job comes with a one-year guarantee.
Getting around Chadwell St Mary
For trains, East Tilbury station is closest to the centre. Local landmarks include Ealing Broadway Centre (3.5 miles north-west) and Walton Hall Museum (1.8 miles east). Closer in, we work on homes, rented flats and businesses near Herringham Primary Academy, Palmer's College, Thurrock and Basildon College and Emmanuel Church. For open space, Thurrock Thameside Nature Park and Sawyers Lake are close by.
What customers say
Rated 4.9 on Google from 180+ five-star reviews. Read the reviews on Google.
“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.”
“We had old mastic that needed replacing throughout our kitchen and bathrooms. The mastic man professional was knowledgeable, quoted fairly, and delivered excellent quality work. Highly recommend!”
“Professional mastic man service from start to finish. They assessed the work properly, gave a clear quote, and executed the job perfectly. Very satisfied with the results.”
Areas of Chadwell St Mary we cover
Pick your area for local details, or call 07833 053749 or email us with your postcode.
Also near Chadwell St Mary
Questions we’re asked in Chadwell St Mary
Do you cover all of Chadwell St Mary?
Yes. We cover the whole village and nearby Tilbury, West Tilbury, East Tilbury, Orsett and Grays.
I live in a tower block flat. Can you get access?
Yes. We use the lift where there is one and can arrange access through the council or your managing agent.
Water from my shower has stained the ceiling below. Is it the sealant?
Failed sealant is a common cause. We’ll check the seal, replace it and tell you if anything else, such as a cracked tray, needs another trade.
Can you reseal a wet room in a bungalow?
Yes. We seal floor and wall joints with a mould-resistant silicone suited to wet rooms.
Do you replace window mastic on exposed sides of a house?
Yes. We cut out cracked mastic and replace it with a flexible, weatherproof sealant.
Can you reseal a school or shop washroom out of hours?
Yes. We can work evenings, weekends or holidays to avoid disruption.
My new council home’s sealant is already cracking. Is that normal?
It’s common as a new building settles. If you rent from the council, report it to them first; if you own the home, we can strip and reseal it.
Will you give me a price before starting?
Yes. We look at the job and give you a clear quote before any sealant is removed.
