Medway · England

Capstone Commercial Sealant

Our applicators work in Capstone on sealant work for offices, hotels, washrooms and commercial buildings. Old material cut out, joints cleaned and sealed neatly.

  • Too many rooms to reseal without closing the building
  • Tired sealant in let properties
  • Shower leaks reaching the floor below

Commercial sealant in Capstone

About our commercial sealant in Capstone

We fit the work around your building. We can work room by room, floor by floor or in batches, and out-of-hours work or early starts can be arranged where it helps. We work on office washrooms & kitchens, welfare facilities and hotel bathrooms, and common reasons people get in touch are rental bathrooms that need resealing between tenants and shower leaks reaching the floor below.

Somewhere as small as Capstone, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. Each still needs sound sealant in its washrooms and kitchens, and fire-rated joints where services pass through walls.

We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Capstone (ME7)
Wider area
Medway
Guarantee
A year, on every job
Quote
Quoted before any work starts
Phone
0345 464 0079
Page updated
26 October 2026

How the job changes by surface

Retail & leisure sites

Changing areas and showers at leisure sites are wet all day, so anti-fungal sanitary silicone is the product we use.

Welfare facilities

Failed sealant in welfare areas is a simple fix before an audit. Let us know when it needs to be done and we’ll schedule around it, cure time included.

Do you need commercial sealant in Capstone?

Wet rooms and accessible showers are designed for the whole floor to get wet, so the joints at floor level are under water often. Any split there can let water through quickly.

Keep an eye out for any of the following:

  • Water marks on ceilings under bathrooms
  • Silicone laid over old silicone by a previous contractor
  • Joints that need doing before an inspection or audit
  • Black, stained silicone in guest bathrooms

For buildings such as All Saints Church, any kitchen and washrooms need the same sealant care as any other building.

What to look for in a quote

  • What insurance they hold
  • Which colour the sealant will be
  • How long to leave it before use
  • How the joint is cleaned and prepared

How to choose a mastic man

Why deal with it now?

Patching the worst rooms as complaints come in is hard to manage. A planned programme works through every room, keeping disruption down and costs clear. In a small place like Capstone, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.

The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.

What you get with us

  • A choice of colours where the product allows
  • Domestic, commercial and hotel work
  • You choose the colour before work begins
  • 180+ five-star Google reviews

See how sealant jobs are priced and customer reviews.

FAQs for Capstone

Do you work for landlords with property near Gillingham (Kent) station?

Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.

Is Capstone within the area you cover?

Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.

Which products do you use?

The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.

Can you reseal every bathroom in a hotel?

Yes. We will walk the site, agree the scope and the order, and give you one clear quote.

Does commercial work come with a guarantee?

Yes, with our one-year guarantee. Regular gentle cleaning and working extraction help the sealant last.

Can you do several jobs on one visit?

Yes, we can. Several rooms, windows or areas can go on one quote.

Is it worth trying it myself?

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.

How long does commercial sealant take?

That depends on the amount of work, but most jobs take a few hours for a single washroom, longer for a whole building. We’ll give you a better idea when we quote.

Landlord and commercial work in Capstone

From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.

We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.

Workplaces and buildings in Capstone

If you run a hotel, guest house or holiday let in a coastal place like Capstone, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. Most of the South East has hard water, which leaves limescale on sealant, grout and fittings.

Schools such as Hempstead Infant School are buildings too, and busy washrooms and kitchens can be resealed in phases so they stay open. Rented homes near Gillingham (Kent) station change hands often, and several rental properties can be resealed on one programme.

Capstone is about 1 mile south-west of Gillingham, in Medway. Anywhere in ME7, our applicators can take on commercial sealant. Across Medway, we cover 68 places, Capstone among them. Chelmsford is on our list too, about 26 miles from Capstone.

Every address in ME7 is covered for commercial sealant, from the main roads to the quietest streets. Neighbouring places we cover for commercial sealant include Darland (1 mile north), Hale (1 mile north-west), Hempstead (1 mile south-east), Gillingham (1 mile north-east) and Chatham (1 mile west). Larger places within reach include Rochester (4 miles north-west), Strood (4 miles north-west), Hoo St Werburgh (5 miles north), Rochester Riverside (3 miles north-west), Peters Village (4 miles west) and Brompton (3 miles north-west).

Local landmarks in Capstone

In Capstone, that means homes and buildings near Chatham Grammar School for Girls, The Star pub and The Robert Napier School, among other places. For rail, the closest station is Gillingham (Kent) station, about 2 miles north of the centre. Nearby you’ll also find Medway Maritime Hospital (1.7 miles north-west) and Pentagon Shopping Centre (2.3 miles north-west). Open spaces near Capstone include Burham Down and Blue Bell Hill.

Map of Capstone © OpenStreetMap contributors

DIY sealant or a professional job?

A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.

The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.

The process

There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes a morning for a small washroom, and a planned programme for bigger sites. In a small place like Capstone, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.

  1. We start by looking at the rooms and agreeing what’s needed.
  2. We agree when we will work, with early or out-of-hours slots where they can be arranged.
  3. Areas are protected and the failed sealant removed.
  4. Once dry, every joint is resealed and tooled.
  5. Housekeeping or site staff are told when each area can be used.

How to prepare

  • Where the joints are inside, avoid wetting them before we arrive
  • Plan for the work area to be out of bounds to pets and children
  • Tell us about any water getting in

Ask for a quote

Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will talk you through the work before giving you a price.

Get a price

Related advice

How we quote for commercial sealant

Your quote is based on your job. We look at:

  • Access and height
  • When we can work, for business premises
  • Any mould that needs treating
  • How many areas need sealing

Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.

What to tell us for a quote

There’s no need for technical detail. Just tell us:

  • How we’d reach the joints
  • What’s wrong with the joints now
  • The rough size of the job
  • Whether it’s a home or a business

Want a quote for commercial sealant? Please call 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job