Medway · England
Mastic man in Hoo St Werburgh
Shower, bath, kitchen and window resealing for Hoo St Werburgh and Chattenden, from the historic core to the newest estates and the park homes at Hoo Marina.
- Old sealant cut out, never covered
- ARBOMaster approved
- One-year guarantee on every job
Your local mastic man for Hoo St Werburgh
Hoo St Werburgh is the largest village on the Hoo Peninsula, looking out over the River Medway, and it is growing fast. The parish, which includes Chattenden, went from 8,945 people in 2011 to 13,782 in 2021, and Medway Council’s draft Local Plan looks at expanding it into a small rural town. Mr Mastic covers Hoo from our base in Crawley, resealing bathrooms and kitchens and renewing mastic on windows and doors.
With so many recently built homes, a lot of our work here is putting right sealant that has failed early. The answer is the same as for an old house: take it all out, clean and prime the joint where needed, and lay a flexible bead that can cope with movement. Our guide to new build sealant snagging explains what to look for in a newer home.
Every decade of housing in one parish
The village’s neighbourhood plan design code breaks Hoo into clear character areas. The historic core, around the Grade I listed church of St Werburgh, has older two-storey houses on plots of varying size. Pre-1930s terraces sit close to the footpath in local brick. From the 1930s and 1940s come rendered semis and terraces; the post-war decades added large areas of red-brick semis and bungalows on curving roads; the 1970s and 1980s brought more bungalows and semis; and 1990s and 2000s homes sit in cul-de-sacs with driveways, bays and dormers.
Since 2010, development has been at higher density, two to two-and-a-half storeys with some three-storey apartment buildings, and the newest estates extend east of Bell’s Lane and along the eastern edge of Chattenden. Materials range from red and yellow brick to pale render, white timber weatherboarding and tile hanging.
Each era has its own weak points. Older bathrooms often have layers of old sealant; post-war bungalows have acrylic baths that flex; newer homes have builder sealant that cracks as the house settles, and weatherboarded walls where external joints need a flexible product.

Riverside park homes, flats and parking
Down by the river, Hoo Marina has an area of single-storey residential park homes and houseboats. Park homes have compact shower rooms and lightweight walls and floors that move more than brick, so a stiff seal soon tears. Flexible sanitary silicone, laid on a clean, dry joint, lasts much better. Exterior joints round windows and doors on these homes also take the wind straight off the Medway.
In the newer apartment buildings, a leaking shower usually shows up first in the flat below, so we can agree access with the managing agent if needed. Residents have pointed to limited parking in newer developments, so it helps if you can tell us where we can stop to unload.
Commercial parks, schools and landlords
The former Kingsnorth power station site is now London Medway Commercial Park, and Hoo Marina Industrial Estate sits nearby, both with units, offices and staff facilities that need sealant work from time to time. The Hundred of Hoo Academy, which takes pupils from 4 to 18, is in the village too. We can work out of hours on commercial jobs. Our commercial sealant page explains more.
We also reseal for landlords and letting agents with homes in Hoo and Chattenden, between tenancies or after tenants report mould.
From first call to finished joint
- Tell us about the job. A quick call or email with what needs sealing and where. Photos help us quote accurately.
- Get a clear quote. We give you a clear price before any work starts, and agree a date with 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.
- 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 Hoo St Werburgh
- Bathroom & kitchen resealing: Bathroom and kitchen joints taken back to a clean, dry surface and finished with fresh anti-fungal silicone that won’t lift.
- 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: Failed, botched or over-sealed joints stripped out, the cause found and the joint resealed properly.
- Fire-rated sealant: Intumescent and fire-rated joints around pipes, cables and frames, installed to the manufacturer’s tested specification.
- External & façade joints: Outside movement joints given new backing rod and a flexible, weatherproof sealant in a colour to match the wall.
- New-build mastic & snagging: Failed builder sealant in new homes put right, and plot mastic for developers.
- Floor & skirting joints: Skirting-to-floor gaps, tiled floor movement joints and concrete floor joints sealed with the right product.
- Regrouting: Crumbling grout in showers and wet areas raked out and refilled, so water stays out of the wall behind.
- Glazing & conservatory sealant: Glazing joints on conservatories, roof lanterns and screens renewed with a sealant suited to glass and frames.
- 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 choose Mr Mastic in Hoo St Werburgh
We come to Hoo from Crawley, and whether it is a park home or a brand-new semi, the job gets the same care. Our team has more than 20 years’ experience, is fully insured and holds ARBOMaster approved applicator status, and we use Arbo and Everbuild sealants. We have completed over 2,847 projects and earned a 4.9-star Google rating from 180+ five-star reviews. A clear quote comes first, and a one-year guarantee follows.
Around Hoo St Werburgh
The nearest station to the town centre is Gillingham (Kent) station. Places most people will know nearby are Pentagon Shopping Centre (3.2 miles south-west), Huguenot Museum (3.5 miles south-west) and Upnor Castle (1.9 miles south-west). Closer in, we work on homes, rented flats and businesses near Hoo St Werburgh Primary School and Marlborough Centre, The Hundred of Hoo Academy, Church of St Werburgh and The Chequer's Public House. Green spaces within reach include Bishop Saltings and Gad's Hill.
What customers say
Rated 4.9 on Google from 180+ five-star reviews. Read the reviews on Google.
“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.”
“1950s terrace on Crossways — bath had black mould coming back constantly. Mr Mastic stripped it all back and did it properly. Bathroom looks brand new.”
“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.”
Parts of Hoo St Werburgh we work in
Select your area for more local detail, or call 07833 053749 or email us with your postcode.
Nearby towns we cover
Questions we’re asked in Hoo St Werburgh
Do you cover all of Hoo St Werburgh?
Yes. We cover the whole parish, including Chattenden and Hoo Marina, and other villages on the Hoo Peninsula.
My new house in Hoo has cracked sealant already. What should I do?
Report it to your developer if it is still within their snagging period. If not, we can cut it out and reseal with a flexible sanitary silicone.
Can you reseal a shower in a park home at Hoo Marina?
Yes. Park home bathrooms move more than brick-built ones, so we use a flexible sanitary silicone and make sure the joint is clean and dry first.
I live in an apartment and water is getting into the flat below. Can you help?
Often a failed shower or bath seal is the cause. We can reseal it, though a leaking pipe needs a plumber first.
Do you seal around windows on weatherboarded houses?
Yes. We use a flexible exterior sealant that suits timber, and a paintable one where the joint will be painted.
Can you work at business units on the commercial park?
Yes. Out-of-hours working can be arranged so welfare facilities stay available during shifts.
Do you reseal kitchen worktops?
Yes. We remove the old sealant, clean the joint and use a suitable sanitary product, especially around the sink.
