Hertfordshire · England
Mastic man in Borehamwood
Resealing for Borehamwood’s Victorian railway streets, 1950s overspill estates and newer flats, with Elstree and the Hertsmere villages covered too.
- 20+ years’ experience
- ARBOMaster approved applicator
- One-year guarantee
Sealant jobs we do in Borehamwood
Borehamwood was a small rural hamlet until the Midland Railway opened Elstree station in 1868. Housing followed the line, manufacturing came after 1914 and the Barnet bypass of 1927, and the last big burst of growth was in the 1950s, when the town was chosen for London overspill housing. Today it’s mainly a residential town, ringed by Green Belt, and its homes cover every one of those stages.
Mr Mastic covers Borehamwood and Elstree from our base in Crawley. Most calls we get from towns like this are about baths and showers that have started to leak or go black, kitchen worktop joints that have opened up, and window frames where the old mastic has cracked and fallen away. We remove the old sealant entirely, treat any mould, let the joint dry and lay a fresh bead that suits the job.
Railway brick, overspill estates and new flats
The earliest streets went up after the railway arrived, and clay dug from the railway tunnels was used to make bricks for local housing; some of those bricks can still be seen in houses on Brownlow Road and Drayton Road. Older terraced and semi-detached houses like these often have small bathrooms, original walls that aren’t quite flat and windows that have been replaced more than once.
The 1950s changed the town most. Borehamwood was one of the London County Council’s out-of-county housing developments, and large council estates were built for Londoners who had lost their homes. Many of those houses and flats are now privately owned, and each owner has put their own stamp on the bathroom. We often find acrylic baths that flex when filled, showers fitted over baths with no screen seal, and sealant laid on top of older sealant. We fill the bath before resealing so the bead sets with the bath at its heaviest, and our bath resealing page explains the steps.
Hundreds of new homes have been built in recent years, mostly flats. New buildings settle, and the builder’s sealant around showers and kitchens often cracks in the first year or two.
Ex-council blocks, mixed ownership and the flat below
On the post-war estates, one block can hold owner-occupiers, private tenants and council or housing association tenants side by side. When a shower seal fails upstairs, the water usually turns up in the ceiling of the flat below, and sorting out who is responsible can take longer than the repair. Resealing at the first sign of a gap is the cheapest way to avoid that. Our article on leaking shower sealant shows the warning signs.
For flats, we can liaise with managing agents and housing associations over access, and we carry tools and materials up the stairs ourselves where there is no lift. In the newer blocks, we work within any building rules on noise, parking and working hours.
Hotels, offices on Elstree Way and local shops
Borehamwood’s fast trains into London bring a steady trade to its hotels, whose bathrooms are cleaned and used every day. We can reseal hotel bathrooms room by room so most rooms stay available; our hotel sealant service explains how. Offices along Elstree Way, the large stores at Borehamwood Shopping Park and the shops in the town centre all have washrooms and staff kitchens that need resealing from time to time.
We also work for landlords and letting agents across the town, between tenancies or when a tenant reports mould.
From first call to finished joint
- Call or email. Tell us what needs doing, where it is and anything about access. Photos by email help.
- Agree the price. You get a clear quote up front, and we book a date that suits you.
- Strip back the old joint. Every bit of old sealant is removed and the joint is cleaned, treated for mould 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.
Our services in Borehamwood
- 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: 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: Failed, botched or over-sealed joints stripped out, the cause found and the joint resealed properly.
- 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: 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: Gaps under skirting boards, tile movement joints and concrete floor joints sealed with a product that suits the traffic.
- Regrouting: Crumbling grout in showers and wet areas raked out and refilled, so water stays out of the wall behind.
- Glazing & conservatory sealant: Glass-to-frame joints on conservatories, rooflights and shower screens cut out and resealed.
- Gutter, fascia & soffit sealing: Leaking gutter joints, end caps, fascia and soffit joints resealed with exterior sealant.
- Sand mastic for sash & case windows: Sash and case window surrounds in stone and brick re-pointed with traditional sand mastic.
Choosing a mastic man in Borehamwood
A Borehamwood bathroom may have been refitted three times by three different owners, and it shows in the sealant. Mr Mastic strips it back and starts again properly. We have 20+ years in the trade, full insurance and ARBOMaster approved applicator status, and we work with Arbo and Everbuild sealants. Over 2,847 projects and a 4.9-star Google rating from more than 180 five-star reviews back that up. The price is agreed in a clear quote first, and the work carries a one-year guarantee.
Around Borehamwood
For trains, Elstree & Borehamwood station is closest to the centre. Local landmarks include Spires Shopping Centre (3.1 miles east), Elstree and Borehamwood Museum (less than half a mile south) and Hilfield Castle (2.6 miles west). Around the centre, our work takes us to homes, rentals and businesses close to St Teresa Catholic Primary School, Yavneh College, All Saints church and The Pick & Shovel pub. For open space, Rowley Lodge Field and Darland's Lake are close by.
What customers say
Rated 4.9 on Google from 180+ five-star reviews. Read the reviews on Google.
“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.”
“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.”
Areas of Borehamwood we cover
Find your area below, or call 07833 053749 or email us with your postcode and a few details.
Nearby towns we cover
Questions from Borehamwood
Do you cover all of Borehamwood?
Yes. We cover the whole town and Elstree, and the neighbouring Hertsmere places of Radlett, Shenley and Bushey as well.
You’re based in Crawley. Is Borehamwood too far?
No. Borehamwood is part of our regular area, and we plan visits so we arrive with the right materials for your job.
My ex-council flat has a leak into the flat below. Can you help?
Yes. If the leak is from failed sealant round a bath or shower, we remove it, dry and treat the joint and reseal. We can also talk to your managing agent or housing association about access.
The sealant in my new-build flat has already cracked. Is that normal?
It’s common. New buildings settle and showers get daily use, so builder’s sealant often fails early. We cut it out and reseal properly.
Can you reseal several hotel bathrooms without closing the whole floor?
Yes. We work room by room so rooms can go back into use once the sealant has cured.
Why does the seal along my bath keep splitting?
Acrylic baths flex when filled. We fill the bath while the new sealant cures, so it sets in the loaded position and moves less afterwards.
Do you reseal kitchens too?
Yes. We replace worktop, sink and upstand sealant, using a suitable product next to food areas.