Hertfordshire · England
Mastic man in Waltham Cross
Bath, shower, kitchen and window resealing for Waltham Cross homes, town-centre flats and High Street businesses, right on the Hertfordshire edge of London.
- Old sealant cut out, never covered
- ARBOMaster approved
- One-year guarantee on every job
Sealant jobs we do in Waltham Cross
Waltham Cross sits at the southern tip of Hertfordshire, with Cheshunt to the north, Waltham Abbey across the Lea to the east and Enfield just over the M25. It is a compact town in the Borough of Broxbourne, and a lot of its homes are flats, terraces and family houses that have had bathrooms and kitchens refitted more than once. Mr Mastic covers the town from our base in Crawley, resealing baths, showers, basins and worktops, and renewing tired mastic around windows and doors.
The work itself is never rushed. Old sealant is cut and scraped out in full, any mould underneath is treated, the joint is left clean and dry, and the new bead is chosen for the job it has to do. If you have tried running a fresh line of silicone over a failing one, you will already know it peels within weeks; our article on sealing over old silicone explains why.
A High Street town with flats above, terraces behind
The town takes its name from the Eleanor Cross that still stands in its centre, one of only three medieval Eleanor crosses to survive. Around that historic core, the pedestrianised High Street has a run of older frontages, the art deco front of the former Embassy cinema and shop units with flats above. The streets behind are mainly terraced and semi-detached housing, with council-built and housing association homes such as Sawyers Court managed by Metropolitan Housing Trust.
The town centre is also changing quickly. Swan Court, above the Pavilions shopping centre, and Eleanor House, opposite the bus station, have each been converted from offices into about 40 apartments, and Broxbourne Council’s planning framework for the town centre looks ahead to around 600 more apartments if all its sites come forward. Office-to-flat conversions often have compact shower rooms fitted into spaces never meant for them, and the sealant around trays and screens is usually the first thing to give way.
In the older houses, the common faults are tired seals around acrylic baths that flex when full, worktop joints that have shrunk back from the tiles, and uPVC windows whose mastic has gone hard and cracked after years of sun. Each of those is a cut-out-and-redo job, not a top-up.

Converted offices, flats over shops and the motorway edge
Much of the sealant work in Waltham Cross is in flats, and in a flat a leaking shower tray rarely shows up in your own home first. It shows up as a brown ring on the ceiling of the flat below. In converted office blocks and flats above shops, we can liaise with the managing agent or building owner about access, keys and parking near the High Street, which is pedestrianised and busy on market days.
Outside, the town’s position next to the M25 and Junction 25 means plenty of traffic, dust and grime on window frames, and dirt sticks to old, tacky mastic. Where frames meet brick or render, we cut out cracked joints and replace them with flexible window and door mastic, using backing rod where the gap is too deep for sealant alone.
Shops, the Pavilions and Park Plaza
The High Street has a long-standing independent department store, Fishpools, alongside the shops and cafés of the Pavilions shopping centre, and the town’s market brings extra footfall. West of the town, the Park Plaza area beside Junction 25 is home to large employers, including the printworks that opened there in 2008. Staff washrooms, kitchens and shower rooms in places like these all need resealing from time to time, and we can work out of hours so facilities are not lost during the day.
Landlords are a big part of the picture too. With so many rented flats in and around the town centre, we often reseal between tenancies or after a tenant reports black mould, so the property is ready for the next check-in.
How it works
- Get in touch. Call or email with the job, your postcode and a few photos if you have them.
- Agree the price. You get a clear quote up front, and we book a date that suits 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.
- Guaranteed work. You’ll know the cure time before we leave, and every job comes with a one-year guarantee.
Our services in Waltham Cross
- 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: 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: 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: 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: Floor and skirting joints in homes, shops and warehouses sealed neatly and to the right depth.
- Regrouting: Cracked, stained or crumbling grout raked out and replaced, with corners resealed in 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.
Why Mr Mastic in Waltham Cross
Waltham Cross is a straightforward run round the M25 for us, and you get the same standard we keep in Crawley. That means more than 20 years of sealant experience, full insurance and ARBOMaster approved applicator status, with Arbo and Everbuild products on every job. We have finished over 2,847 projects and hold a 4.9-star Google rating from more than 180 five-star reviews. Before anything starts you get a clear quote, and when we leave, the work carries a one-year guarantee.
Getting around Waltham Cross
The nearest station to the town centre is Waltham Cross station. Local landmarks include Museum of Enfield (3.3 miles south-west). Around the centre, our work takes us to homes, rentals and businesses close to Four Swannes Primary School, Lea Valley High School, Aylands School and Christ Church. For open space, Danemead and Lippitts Hill are close by.
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.”
Parts of Waltham Cross we work in
Find your area below, or call 07833 053749 or email us with your postcode and a few details.
- Brimsdown
- Bulls Cross
- Bullsmoor
- Churchgate
- Enfield Highway
- Enfield Island Village
- Enfield Lock
- Enfield Wash
- Freezywater
- Sewardstone
Other towns around Waltham Cross
Questions we’re asked in Waltham Cross
Do you cover all of Waltham Cross?
Yes. We cover the whole town, including the High Street and town centre, the streets around Theobalds Grove station, and neighbouring Cheshunt and the edge of Enfield.
I live in one of the new apartments above the Pavilions. Can you reseal my shower?
Yes. We can arrange access with your building manager, bring everything up ourselves and reseal the tray, screen and wall joints in one visit.
Water is coming through my ceiling from the flat above. Is it the sealant?
Often it is a failed shower or bath seal upstairs. We can check and reseal the upstairs bathroom, though a leaking pipe needs a plumber first.
Can you work in a shop or office on the High Street before opening?
Yes. Out-of-hours working can be arranged for commercial jobs so staff and customers are not disturbed.
My uPVC window mastic has gone black and hard. Can it be replaced?
Yes. We cut it out completely, clean the frame and brickwork, and apply a new flexible weatherproof sealant in a colour to suit.
Do you work for letting agents in Broxbourne?
Yes. We reseal between tenancies and can quote for several properties at once.
How long does a typical bathroom reseal take?
Most baths or showers take a few hours, including removing the old sealant. We will tell you how long to leave it before use.
