Hampshire · England
Mastic man in Blackwater
Bath, shower and window resealing for Blackwater, Frogmore, Darby Green and Hawley homes, on the Hampshire side of the river near Camberley.
- 20+ years’ experience
- ARBOMaster approved applicator
- One-year guarantee
Resealing and mastic work across Blackwater
Blackwater sits right on the Hampshire border, with the River Blackwater just to the east and Camberley, Sandhurst and Yateley all close by. It is part of Hart District and part of the wider Farnborough and Aldershot built-up area, so for many people it is a commuter town with easy reach of half a dozen larger places. Mr Mastic covers Blackwater from our base in Crawley, resealing baths, showers, basins and kitchen worktops, and renewing tired mastic around windows and doors.
Our approach is the same whether it is a small en suite or a whole house of frames. The old sealant comes out completely, mould underneath is treated, the joint is cleaned and dried, and a new bead goes on that suits the movement and the use it will get. A fresh line run over a failing one rarely lasts more than a few weeks, which is why we never take that shortcut.
Commuter homes from Frogmore to Hawley
Hart District Council treats Frogmore and Darby Green, to the north, as districts of Blackwater, and Hawley lies less than a kilometre to the south on the road towards Farnborough. Between them they give the area a mix of family houses, semis, short terraces and smaller blocks of flats, much of it the kind of steady commuter housing that has been extended, refitted and updated by several owners over the years.
That history shows in the bathrooms. We often find a bath that has been replaced two or three times, each fitter leaving a layer of sealant behind, or an acrylic bath that dips when it is full and has torn its seal at the corners. In kitchens, worktop joints shrink back from the tiles, and the bead behind the sink turns grey and lifts. Cutting all of it out and starting again with a flexible sanitary silicone is the only repair that holds.
Many houses here now have uPVC windows and patio doors fitted a decade or two ago. The mastic around them was soft when it went in, but sun and frost harden it, and once it cracks, rain finds its way behind the frame. Our window mastic guide explains the signs to look for.
Flats by the station and homes near the river
West of Blackwater station, the White Hart parade of shops and offices takes its name from a coaching inn that once stood on the site, and there are flats above and around the parades in the town. In a flat, a failed seal around a shower tray is usually noticed by the neighbour below before anyone upstairs. We can arrange access with a managing agent or landlord, and we bring everything we need up in one go so the job is done in a single visit.
Houses near the river and the A30 crossing tend to sit lower and can feel damp through the winter, which slows the drying of joints and encourages mould on old bathroom sealant. A well-ventilated room and an anti-fungal silicone make a clear difference, and outside we use weatherproof sealant set at the right depth so frames stay tight.
Shops, parades and rented homes
Blackwater’s two shopping parades include food outlets, a pharmacy and a newsagent, and the town has Aldi and Lidl supermarkets opposite each other, plus pubs such as The Royal Swan. Staff toilets, kitchens and washrooms in shops and pubs all need resealing from time to time, and out-of-hours working can be arranged so trading is not interrupted. See our commercial sealant page for the kind of work we take on.
We also work for landlords and letting agents with rented houses and flats in Blackwater, Frogmore and Hawley, resealing between tenancies or after a tenant reports black mould.
How it works
- Get in touch. Call or email with the job, your postcode and a few photos if you have them.
- Get a clear quote. We give you a clear price before any work starts, and agree a date with 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.
- Cure and guarantee. We tell you when it can be used, and every job has our one-year guarantee.
Jobs we take on in Blackwater
- 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: 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: Messy, layered or wrong-product sealant cut out and replaced with the right sealant, laid the right way.
- Fire-rated sealant: Intumescent and fire-rated joints around pipes, cables and frames, installed to the manufacturer’s tested specification.
- External & façade joints: Split or perished joints in walls and cladding replaced with exterior sealant designed to stretch with the building.
- 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: Glazing joints on conservatories, roof lanterns and screens renewed with a sealant suited to glass and frames.
- Gutter, fascia & soffit sealing: Leaking gutter joints, end caps, fascia and soffit joints resealed with exterior sealant.
- Sand mastic for sash & case windows: Traditional burnt sand mastic renewed around sash and case windows and doors in stone and brick.
Choosing a mastic man in Blackwater
We come over from Crawley to work in Blackwater, and the standards travel with us. You get applicators with more than 20 years in the trade, full insurance and ARBOMaster approved status, using Arbo and Everbuild sealants rather than whatever is on the shelf. Over 2,847 projects and a 4.9-star Google rating from 180+ five-star reviews say more than we could. We give a clear quote before we start, and every job is backed by a one-year guarantee.
Places we pass in Blackwater
The nearest station to the town centre is Blackwater station. Well-known places nearby include Staff College Museum (1.9 miles east). Around the centre, our work takes us to homes, rentals and businesses close to Frogmore Infant School, Frogmore Community College, St Barnabas Church and Mr Bumble pub. For open space, Wildmoor Heath and Ball Hill are close by.
What customers say
Rated 4.9 on Google from 180+ five-star reviews. Read the reviews on Google.
“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.”
“Harper Drive in Maidenbower — kitchen worktop had been leaking behind for a while. Came out the next day, sorted it properly. Really tidy job.”
Areas of Blackwater we cover
Select your area for more local detail, or call 07833 053749 or email us with your postcode.
Towns near Blackwater
Questions from Blackwater
Do you cover all of Blackwater?
Yes. We cover the whole town, including Frogmore, Darby Green and Hawley, and nearby Yateley, Sandhurst and Camberley.
My acrylic bath seal keeps splitting at the corners. Why?
Acrylic baths flex when they are filled, and a stiff or thin bead tears. We fill the bath before sealing so the new silicone is laid at its heaviest.
Can you reseal a shower in a flat above the shops?
Yes. We can liaise with your landlord or managing agent about access and do the work in one visit.
Do you work in pubs and shops before they open?
Out-of-hours working can be arranged for commercial jobs, so staff and customers are not disturbed.
Will you just add a new line of silicone over the old one?
No. New silicone will not bond to old silicone, so we always remove the old bead in full before resealing.
How long until I can use the bath again?
Usually about 24 hours. We will tell you the cure time for the product we used before we leave.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee.