Hampshire · England
Mastic man in Andover
Resealing for Andover’s overspill-era council homes, newer estates like Augusta Park and Picket Twenty, and town-centre flats and businesses.
- 20+ years’ experience
- ARBOMaster approved applicator
- One-year guarantee
Resealing and mastic work across Andover
In 1960 Andover had about 17,000 people. Then it was chosen to take overspill from London, and a 1961 plan set out 9,000 new homes. By 1981 the population had passed 51,000. That rapid growth, and the large estates built since 2000, mean a huge number of Andover homes are of similar ages and have similar sealant problems. Mr Mastic covers Andover from our base in Crawley, resealing bathrooms and kitchens and replacing window and door mastic.
We take the old sealant out completely, clean and dry the joint and lay a new bead suited to the surface and the movement. It is the only way to get a seal that lasts. If you have tried a top-up and watched it peel, our guide to leaking shower sealant explains what was going wrong.
Expansion-era homes and twenty-first-century estates
The first new council houses of the expansion were ready by 1954, and Londoners were moving into council houses and flats by 1960. Those post-war homes are now on their second or third bathroom, and we often find old tile edges, baths that have dropped on their feet and several layers of sealant applied over each other. Replacement uPVC windows from the 1990s and 2000s tend to have mastic that has hardened and cracked, letting draughts and damp in around the frame.
Since the 2000s, developers have added large estates on the edge of town, including Saxon Fields, Augusta Park and Picket Twenty, with more recent building around Peake Way. These homes bring the new-build pattern: shower trays and baths set on new timber floors, houses still drying out, and developer sealant that splits within the first year or two. Cutting it out and resealing with a flexible silicone usually solves it for good. Our page on new build sealant snagging lists what to check.

Flats, the town centre and family estates
The expansion brought blocks of flats as well as houses, and the Chantry Centre and its connected bus station were built as part of the same growth. In any flat, a failing bath or shower seal tends to show up on the ceiling below first, so it pays to deal with it early. We can work with housing associations, managing agents and landlords to arrange access, and we bring everything we need up the stairs in one go.
On the newer estates, outside joints are as important as the bathroom. Window and patio door frames, meter boxes and the joints between brick and render all carry mastic, and it often fails early where the house has settled. We replace it with a weatherproof sealant set on backing rod where the gap is deep.
Business parks, Army HQ and the hospital
Andover Business Park sits partly on the old RAF Andover site south of the town, and since 2012 the former airfield has been home to Army Headquarters. Offices and depots like these have staff washrooms, showers and kitchens that need resealing every few years, and we can work out of hours to keep them in use. Andover War Memorial Hospital, run by Hampshire Hospitals NHS Foundation Trust, and Andover College are also in the town; see our commercial sealant page for the kinds of buildings we cover.
Landlords and letting agents are a big part of our Andover work, especially between tenancies.
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.
- Preparation first. Old sealant out completely, surfaces cleaned, mould treated and the joint left dry.
- 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 Andover
- Bathroom & kitchen resealing: Baths, showers, basins, wet rooms, worktops and sinks: old sealant cut out, mould treated and a new bead of anti-fungal silicone laid.
- Window & door mastic: Cracked or shrunken mastic around window and door frames, sills and patio doors replaced with a weatherproof sealant.
- Commercial & hotel sealant: Sealant programmes for offices, hotels, care settings and schools, with early or late working where it helps.
- Remedial sealant & repairs: Leaks and lifting beads from earlier sealant jobs put right, starting with finding out why they failed.
- 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: Outside movement joints given new backing rod and a flexible, weatherproof sealant in a colour to match the wall.
- New-build mastic & snagging: New-build bathrooms, kitchens and frames resealed where the original sealant has cracked as the house settles.
- Floor & skirting joints: Movement joints in tiled and concrete floors, and skirting gaps, sealed so they stay tidy and keep dirt out.
- 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: Dripping gutter joints and end caps, and gaps at fascias and soffits, sealed with weatherproof exterior sealant.
- Sand mastic for sash & case windows: Traditional burnt sand mastic renewed around sash and case windows and doors in stone and brick.
What you get with Mr Mastic in Andover
Andover is part of our regular Hampshire round from Crawley. The people doing your job have 20+ years of sealant work behind them, are fully insured and hold ARBOMaster approved applicator status, and they use Arbo and Everbuild sealants. We have completed more than 2,847 projects and have a 4.9-star Google rating from over 180 five-star reviews. There is always a clear quote first, and every reseal is covered by a one-year guarantee.
Landmarks near Andover
From the centre, the nearest railway station is Andover station. Well-known places nearby include Andover Museum (less than half a mile east). Closer in, we work on homes, rented flats and businesses near St John the Baptist Catholic Primary School, Winton Community Academy, Winton Community Academy and Church of St Mary. Nearby green spaces include Anton Lakes and Mill Lake.
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 Andover we work in
Pick your area for local details, or call 07833 053749 or email us with your postcode.
Other towns around Andover
Questions we’re asked in Andover
Do you cover all of Andover?
Yes. We cover the town centre and older estates, Charlton, and newer areas such as Saxon Fields, Augusta Park and Picket Twenty.
I’ve bought a new home on Augusta Park and the bath sealant has already cracked. Is that normal?
It is common. New homes settle and timber floors move, so builder sealant often fails early. We remove it and reseal with a flexible sanitary silicone.
My 1960s council house has layers of old sealant. Can you take it all off?
Yes. We strip every layer back to a clean surface before resealing, as new silicone will not bond to old.
Can you reseal welfare facilities at an office on the business park?
Yes. Out-of-hours working can be arranged for commercial jobs.
Do you work for housing associations and letting agents?
Yes. We reseal between tenancies and after tenants report mould, and can quote for several homes at once.
Can you replace the mastic around my windows and patio doors as well?
Yes. We cut out cracked or hardened mastic, clean the frame and brickwork, and reseal with a flexible, weatherproof sealant in a colour to suit.
Do you need to turn anything off before resealing?
No. We only need clear access to the bath, shower or worktop, and for it to stay unused until the sealant has cured.
Is the work guaranteed?
Yes. Every job has our one-year guarantee.
