Hertfordshire · England
Walkern Commercial Sealant
Sealant work for offices, hotels, washrooms and commercial buildings in Walkern, with a 12-month guarantee on every job. Ask us for a quote.
- Leaks from showers into rooms or ceilings below
- Black, stained silicone in guest bathrooms
- Repeated reseals that do not last
Commercial sealant for homes and businesses in Walkern
Hotel bathrooms take hard daily use and constant cleaning, so sealant wears out faster than it would at home. We work through rooms in batches, keeping most rooms available. If you’re dealing with repeated reseals that don’t last and rental bathrooms that need resealing between tenants, we can help, on office washrooms & kitchens, retail & leisure sites and rental portfolios alike.
In a village or hamlet like Walkern, commercial work is more likely to be a pub, a farm shop, holiday lets or a village hall than an office block. Each still needs sound sealant in its washrooms and kitchens, and fire-rated joints where services pass through walls.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Location
- Walkern (SG2)
- Wider area
- Hertfordshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Use mild cleaners on sealant, not bleach or abrasives
- Report broken fans quickly
- Pass on the cure time to whoever cleans the rooms
- Put a squeegee in each shower
Each room is handed back with its cure time, generally around 24 hours. Pass it on to housekeeping or cleaners so the new sealant isn’t wetted or scrubbed too soon.
It’s easier to plan a programme than to react to failures. Rooms can be scheduled around occupancy and staff, instead of rooms closing without warning.
Common questions in Walkern
Will you come out to Walkern?
Yes, Walkern is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Walkern for commercial sealant?
Yes. We work across London and the South East, and Walkern is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear quote.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Is it messy?
We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Can I choose the sealant colour?
In most cases you can choose. We’ll explain which colours are available and agree one before work begins.
Where are you based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Also near Walkern
Other services in Walkern
Workplaces and buildings in Walkern
Hard water is the norm across most of the South East, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
If you look after a church, hall or community building such as Parish Church of St Mary the Virgin, its kitchen and washroom sealant needs looking after like anywhere else. If you look after a building such as Walkern Primary School, washroom and kitchen sealant can be programmed around term times or opening hours. Rented homes near Stevenage station change hands often, and sealant work can be quoted for a single flat or a whole portfolio.
Walkern is about 2 miles east of Stevenage, in Hertfordshire. Whether you’re in the middle of Walkern or further out, commercial sealant is available for homes and businesses alike, from flats and houses to offices and hotels. We cover 381 towns and villages across Hertfordshire, from the larger towns to small villages. For nearby work, see our London page.
All of SG2 is within our area for commercial sealant. Whether your property is on High Street, Walchra Court and Yew Tree Close or anywhere close by, our applicators can take on the job. If you are just outside Walkern, we cover Aston End (2 miles south-west), Chells (2 miles west), St Nicholas (2 miles west), Stevenage (2 miles west) and Pin Green (3 miles west). Further out, we also cover St Albans (14 miles south-west), Bishop's Stortford (13 miles east), Welwyn Garden City (9 miles south), Harpenden (12 miles south-west), Hitchin (6 miles west) and Hoddesdon (12 miles south-east).
What’s near Walkern
Locally, jobs take us to homes and businesses close to The Nobel School and The Robin Hood Public House, among other places. The closest station to Walkern is Stevenage station, roughly 3.6 miles west. Nearby you will also find Lister Hospital (3.6 miles west) and Stevenage Museum (3.3 miles west). Open spaces near Walkern include Pryor's Wood.
Why it’s worth doing now in Walkern
Sealing over the old bead can seem the fastest option, but it will not bond, and it lifts again soon. Doing it properly once is less disruptive than doing it badly twice. Where a wall is exposed, as many are in small places like Walkern, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why choose Mr Mastic in Walkern
- Quality sealants from Arbo and Everbuild
- Anti-fungal silicone where joints get wet
- Sealant colour chosen to suit
- Domestic, commercial and hotel work
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What we do, step by step
We keep the work tidy and contained to the joints we are treating. Expect the work to take a few hours per area, with larger sites planned over several visits. For a village or hamlet like Walkern, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we visit and agree the scope, the sequence and the working hours.
- Each area is protected and the old sealant cut out completely.
- We clean the joints, treat any mould and let them dry.
- We lay the right sealant for each area, with anti-fungal silicone in wet rooms.
- Rooms are checked and returned with a cure time so staff know when to use them.
Before we arrive
- Try not to wet indoor joints just before the visit
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
Every job is quoted individually. Just phone 0345 464 0079 or email us with the details and send pictures if you have them.
Read more
What sealant work cannot fix
New sealant can’t fix everything, and we will tell you before we start. It won’t solve:
- A shower tray, bath or basin that is cracked or broken
- Certifying fire stopping or building compliance
- Extraction that isn’t working, which needs an electrician or ventilation contractor
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Rental portfolios
- Student & care accommodation
- Retail & leisure sites
- Hotel bathrooms
- Office washrooms & kitchens
- Welfare facilities
How the job changes by surface
Welfare facilities
Welfare facilities, shower rooms and changing areas need to stay usable. Work can be split into sections so part of the facilities stays in use.
Rental portfolios
A sound seal protects the property as well as its appearance, especially where you rarely see the bathroom yourself.
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Letting agents and landlords in Walkern can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.