Thurrock · England
Mastic man in Grays
Bathroom resealing, window mastic and sealant repairs for Grays homes, from Victorian terraces near the town centre to Stifford Clays and Chafford Hundred.
- Old sealant cut out, never covered
- ARBOMaster approved
- One-year guarantee on every job
Your local mastic man for Grays
Grays is Thurrock’s main town, and its homes cover more than a century of building: Victorian terraces, interwar council houses, 1960s and 1970s town-centre blocks and the large estates of Chafford Hundred. Mr Mastic covers Grays from our Crawley base, resealing baths, showers and kitchens and replacing worn mastic around windows and doors, inside and out.
We often find a bath that has dropped slightly and opened up the seal along the wall, or a kitchen worktop joint that has blackened with mould. Either way the job is the same: take out all of the old sealant, clean and dry the joint, and lay a new bead in the right product. Our bath resealing page shows how we fill the bath first so the seal doesn’t tear when it’s used.
Terraces, council estates and a new town on a quarry
Grays grew quickly once the railway arrived in 1854, and with the chalk pits, brickworks and nearby Tilbury Docks needing workers. Most of the houses built between 1876 and 1914 were terraced artisans’ cottages, of which Clarence Road is a typical example. After the First World War the council built more than 500 houses on the Grays Hall estate north of Orsett Road, while private builders added the Lodge estate. From 1952 the council developed Stifford Clays into a large estate, and the town centre was largely rebuilt between 1965 and the early 1970s with towers, blocks and pink-brick terraces.
Chafford Hundred came next. Building began in 1988 on land that was mostly old chalk quarry, and around 5,600 houses and flats now stand there, from family homes to housing association and retirement properties.
In the older terraces, bathrooms are often small rear extensions with several refits behind them, so we regularly find old sealant layered over older sealant. In homes from the 1990s and later, the first set of builder’s sealant is usually due for replacement, especially in busy family showers. Our post on new-build sealant snagging explains what tends to go wrong.

Town-centre blocks, riverside streets and shared walls
The flats and maisonettes in and around the town centre bring the usual block issues: lifts and stairwells to plan around, limited parking, and a flat below that suffers first if a shower seal fails. We work tidily, protect shared areas and take the time to cut out every trace of old silicone so the new seal bonds properly. Where we’re working through a managing agent or housing provider, we’re glad to fit in with their access rules.
Down towards the riverside, terraces and newer flats face the Thames, and frames on that side take driving rain and wind. In blocks, the joints where pipes and services pass through walls and floors sometimes need fire-rated sealant rather than ordinary silicone; our fire-rated sealant page explains the difference.
Offices, the college and businesses near Lakeside
Grays is home to Thurrock Council’s Town Hall and Civic Offices on New Road, and to the Thurrock Campus of South Essex College, which moved to the town centre in 2014. Lakeside Shopping Centre sits just west at West Thurrock, and the riverside and port industries along the Thames support warehouses and distribution sites with their own staff washrooms and kitchens.
For offices, shops, schools and care homes in the area, we reseal toilets, kitchens and shower rooms and can work early or late to avoid busy hours. Landlords and letting agents with flats and terraces in Grays also use us between tenancies and when tenants report mould. We can collect keys from an agent, reseal while the property is empty and leave it ready for the check-in inspection.
What happens when you book
- Get in touch. Call or email with the job, your postcode and a few photos if you have them.
- Quote and booking. We quote clearly before anything starts and fix a day that works for you.
- Preparation first. Old sealant out completely, surfaces cleaned, mould treated and the joint left dry.
- Lay the new bead. We apply the right product for each joint and tool it to a clean, even line.
- Cure and guarantee. We tell you when it can be used, and every job has our one-year guarantee.
What we do in Grays
- 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: Frame perimeters inside and out resealed with flexible, colour-matched sealant, with backing rod where the gap is deep.
- 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: 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: Early-failing sealant in new homes fixed properly, plus mastic packages and snagging for developers.
- Floor & skirting joints: Skirting-to-floor gaps, tiled floor movement joints and concrete floor joints sealed with the right product.
- Regrouting: Tired or mouldy grout raked out and renewed, and the internal corners finished in flexible silicone.
- Glazing & conservatory sealant: Conservatory, rooflight, glass panel and shower screen joints resealed with glazing silicone.
- Gutter, fascia & soffit sealing: Gutter unions, outlets and fascia joints that leak in heavy rain cleaned and resealed.
- 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 Grays
Whether it’s a terrace off Orsett Road or a Chafford Hundred townhouse, you want the job done once and done right. Mr Mastic is an ARBOMaster approved applicator with 20+ years in the trade and full insurance, and we use Arbo and Everbuild sealants. Our 2,847+ completed projects and 4.9-star Google rating from more than 180 five-star reviews speak for the work. We agree a clear quote with you first and guarantee every job for one year.
Around Grays
The nearest station to the town centre is Grays station. Places most people will know nearby are Lakeside Shopping Centre (2.1 miles west), Thameside Centre (less than half a mile south-west) and Stone Castle (3.6 miles south-west). Closer in, we work on homes, rented flats and businesses near Quarry Hill Academy, Grays Convent High School, Thurrock and Basildon College and St John the Evangelist. Nearby green spaces include Chafford Gorges Nature Park and Sawyers Lake.
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 Grays we cover
Select your area for more local detail, or call 07833 053749 or email us with your postcode.
Towns near Grays
Questions we’re asked in Grays
Do you cover all of Grays?
Yes. We cover Grays town centre, Little Thurrock, Stifford Clays, Chadwell St Mary, North and South Stifford and Chafford Hundred, plus nearby Tilbury and West Thurrock.
My Chafford Hundred home’s shower sealant has gone black. Can it be cleaned?
Mould usually grows into the silicone itself, so cleaning rarely works for long. We cut it out and reseal with anti-fungal silicone.
Can you work in a town-centre flat without disturbing the neighbours?
Yes. Resealing is quiet work, and we protect shared areas and keep mess to a minimum.
Do you reseal for housing associations and managing agents?
Yes. We’re happy to follow their access arrangements and provide clear details of the work done.
The mastic around my terrace’s back door has cracked. Can you replace it?
Yes. We cut out the old mastic and apply a flexible, weatherproof sealant, with backing rod where the gap is deep.
Do you seal around service pipes in blocks of flats?
Yes. Where a joint needs it, we use fire-rated sealant rather than standard silicone.
Can you do commercial washrooms out of hours?
Out-of-hours working can be arranged for commercial jobs so staff and customers aren’t disturbed.
