Greater London · England
Mastic man in Hounslow
Sealant and mastic work for Chiswick, Brentford, Isleworth, Hounslow and Feltham homes, from Bedford Park villas to new canalside flats.
- Anti-fungal silicone as standard
- 20+ years in the trade
- Guaranteed for a year
Sealant jobs we do in Hounslow
The London Borough of Hounslow runs from the riverside streets of Chiswick out to Feltham and Bedfont on the edge of Heathrow, and its homes are just as varied. Mr Mastic covers the whole borough from our base in Crawley, handling bathroom and kitchen resealing, window and door mastic, external joints and commercial sealant work.
On a typical week in this part of west London we might replace hardened mastic around a Victorian bay window in Chiswick, reseal a shower tray in a new Brentford apartment and refresh the bathroom of a rented semi in Hounslow West. The method stays the same: all of the old sealant comes out, the joint is cleaned and dried, and the new bead goes on with the right product for the surface and the movement it has to cope with. You get a clear quote first, so there are no surprises.
From Queen Anne villas to Brentford’s new apartments
Chiswick holds some of the borough’s oldest and most protected housing. Part of Bedford Park, the Queen Anne Revival estate begun in 1875, lies here, and Strand on the Green is a riverside conservation area of period houses and cottages. Red brick, tile hanging, timber windows and decorative joinery all need flexible sealant that can be kept slim and tidy, and old frames have often been patched with the wrong product over the years.
Around Hounslow, Heston, Isleworth and Feltham, much of the housing is suburban: Victorian and Edwardian terraces and semis on roads such as Hanworth Road in Feltham, with a conservation area at Feltham Pond, and large areas of housing built from the 1930s onwards as market gardens gave way to streets. Here the usual jobs are bathrooms that have been refitted several times, baths that have dropped and opened the joint, and uPVC windows whose mastic has hardened after years of sun.
Brentford is changing fastest, with new apartment blocks and offices along the Great West Road and canalside homes at Brentford Lock West. In Feltham, older high-rise blocks have been replaced with mixed-tenure apartments. If your new home’s sealant is already failing, our new build sealant snagging guide explains what to look for.

Riverside streets, canalside blocks and busy roads
Homes along the Thames at Strand on the Green, Isleworth and Brentford take more wind and weather than streets further inland, and the mastic around their windows, doors and render joints works harder as a result. Outside, we use weatherproof sealants with backing rod where gaps are deep, so the joint can move without tearing; our external joints page explains the approach.
In Brentford’s new canalside and Great West Road blocks, most jobs are inside the flats: showers, baths and kitchen worktops. We plan around concierge desks, lift bookings and loading bays, and we take care with flats below, since a failed tray seal in one apartment is often first noticed as a stain on the ceiling underneath.
Business parks, hospital neighbours and lettings
Hounslow has a large office economy. Chiswick Business Park houses the UK offices of several international firms, and the Great West Road through Brentford, once known as the Golden Mile, is lined with headquarters buildings. Staff kitchens, shower rooms and washrooms in offices like these need resealing on a regular cycle, and we can work early or late. Our commercial sealant page sets out what we do.
West Middlesex University Hospital in Isleworth is surrounded by clinics, care homes and rented homes, and the borough has a busy lettings market from Chiswick to Feltham. We reseal between tenancies and respond to mould and leak reports for landlords and agents.
How a job runs
- 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.
- Lay the new bead. We apply the right product for each joint and tool it to a clean, even line.
- Leave it to cure. We tell you how long to leave it before use, and the work carries our one-year guarantee.
Jobs we take on in Hounslow
- 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: Window and door mastic that has dried out in the sun replaced with a weather-resistant joint that can move with the frame.
- 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: 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: Brickwork movement joints, render and cladding joints resealed with backing rod and flexible exterior sealant.
- 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: 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 choose Mr Mastic in Hounslow
Hounslow’s housing ranges from listed villas to brand-new flats, and two decades of sealant work have taught us how each behaves. Mr Mastic is fully insured, holds ARBOMaster approved applicator status and works with Arbo and Everbuild products. More than 2,847 completed projects and a 4.9-star Google rating, built on 180+ five-star reviews, speak for the results. You’ll have a clear price before we begin, and a one-year guarantee once the job is done.
Getting around Hounslow
The nearest station to the town centre is Hounslow station. Places most people will know nearby are Treaty Centre (0.6 miles west) and Museum of Army Music (0.8 miles south). Around the centre, our work takes us to homes, rentals and businesses close to Chatsworth Primary School, Kingsley Academy, Royal Military School of Music and Church of St Mary the Virgin. Green spaces within reach include Crane Park Island and Richmond Hill.
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.”
Parts of Hounslow we work in
Pick your area for local details, or call 07833 053749 or email us with your postcode.
- Brentford End
- Eel Pie Island
- Gillette Corner
- Heston
- Hounslow West
- Isleworth
- Ivybridge
- Lampton
- Norwood Green
- Osterley
- Spring Grove
- St Margarets
- Twickenham
- Whitton
- Woodlands
Other towns around Hounslow
Questions from Hounslow
Do you cover all of Hounslow?
Yes. We work in Chiswick, Brentford, Isleworth, Osterley, Hounslow, Heston, Cranford, Feltham, Hanworth and Bedfont.
Can you seal windows on a Bedford Park or Strand on the Green house?
Yes. We remove failed mastic carefully and use a slim, neat bead in a colour that suits period timber and brick.
My Brentford apartment is new but the shower seal has already cracked. Is that unusual?
No. New blocks settle, and builder sealant often splits in the first year or two. We cut it out and reseal properly.
Can you work in offices on Chiswick Business Park or the Great West Road?
Yes. Out-of-hours visits can be arranged so staff kitchens and washrooms are ready for the next working day.
Do you reseal outside joints on riverside homes?
Yes. We use weatherproof sealants, with backing rod where the gap is deep, so the joint can move without splitting.
Can you reseal a rented flat between tenants?
Yes. We work with landlords and letting agents across the borough and can collect keys from the agent if needed.
How long will the new sealant last?
With good ventilation and gentle cleaning, a properly applied bead lasts for years, and every job carries our one-year guarantee.
