South East England and London

Commercial sealant contractors in Kent

We cover 931 towns and villages across Kent for commercial sealant, construction mastic, expansion joints, fire-rated sealing and more, with a 12-month guarantee on our workmanship.

Need sealant contractors in Kent?

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Request a fixed quote 01277 525 020

Services in Kent

Start with the service you need, or go straight to the town list below if you know where the site is.

Biggest towns

How commercial sealant contractors works in Kent

Pricing a commercial reseal is a short process. Our quote form takes photographs, drawings or a schedule of the areas. If the joints need seeing in person, a site visit comes first, followed by a fixed quote rather than an estimate that drifts. We work on floor and threshold joints, washrooms and tea points and movement joints in walls and floors, and the usual reasons a site gets in touch are earlier reseals applied straight onto the failed bead and black mould through washroom sealant that won’t clean off.

Working in a building that stays open takes some planning. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use.

First, details come to us: photographs, drawings or a schedule of the areas, and a site visit is booked where it helps.
We work out why the joints have failed and fix a quote for the agreed scope.
We plan around your site hours and access windows, phasing the work where areas have to stay in use.
We strip the failed bead and prepare both faces of the joint.
We fit backing to the right depth, prime where specified and lay the new bead.
Each area is inspected, signed off and backed by our 12-month guarantee.

What you’ll pay

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we’ll explain how it’s made up.

Why choose Mastic Doctor

A range of standard colours, depending on the product
Constructionline member for supplier checks
Colours chosen to suit frames, cladding or finishes where possible
Colour agreed before work starts

Get a fixed quote

To get a fixed quote, give us a call on 01277 525 020 or email the details over, telling us the site location and the nature of the job. You can also send details through our quote form.

Around Maidstone

Locally, jobs take us to sites close to Paper Makers Arms, Maidstone Grammar School and St Philip's Church. Other local landmarks include River Len LNR (less than half a mile north-east), South Borough Primary School (less than half a mile south) and St Augustine Academy (1.2 miles west). Maidstone’s nearest station is Maidstone West station, about 0.6 miles north-west. A little further out are Maidstone Carriage Museum (less than half a mile north-west) and Oakwood Hospital (1.8 miles west). The countryside around Maidstone includes Burham Down and Boxley Hills.

Where commercial joints are in Kent

Shop fits, office refurbishments and hotel refits in towns such as Maidstone, Ashford and Canterbury all leave joints that need sealing. Where the joint is on show, a colour that suits the finish is part of the job.

All of Greater London is inside the ULEZ, and much of the South East is within easy reach of the capital, so jobs in Kent are planned with access, loading and parking in mind. Coastal places in Kent often have hotels, guest houses and holiday accommodation with busy seasons, which makes the quieter months a good time for sealant work.

Maidstone: Parks like Tovil Green Business Park, 0.9 miles to the south-west of Maidstone, see tenants come and go, and every move-in brings joints to seal. Premises within reach of Maidstone West station, 0.6 miles to the north-west of Maidstone, often have busy frontages where joints are seen by everyone passing.

Should maintenance staff do it?

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Commercial clients in Kent

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

Why deal with it now?

Sealant is often treated as an afterthought by the trade that fitted the element. A specialist applicator takes care of product choice, joint depth and preparation. You notice the difference years later, not on the day.

What your quote should include

Their public liability cover
Is depth set with backing rod, or bond-breaker tape in shallow joints?
How long is the guarantee, and what does it include?
Can the work be phased to keep areas open?

How the job changes by surface

Fire-rated seals where specified

Not every penetration suits a sealant. Other products, such as collars, wraps and batts, are specified for different services, and we will tell you if the detail calls for something else.

Window and door perimeters

The perimeter joint between a frame and the structure keeps rain out of the reveal. Failed perimeters are cut out and cleaned, backing goes into deeper gaps, and the joint is resealed with a low-modulus neutral-cure silicone or another suitable product.

Cost factors for sealant joints

Each job is priced on its own details. The main factors are:

Travel to remote or island sites
Quantities, in metres or numbers
Whether old sealant has to be cut out first
Any access equipment needed

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

What to include in your enquiry

To price the job accurately, we need to understand the site. Send us:

Clear photographs of the problem areas
Access details, including height
Drawings or a marked-up plan, if available
Whether the building will be occupied during the work

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.

Questions we’re asked in Kent

Do you hold CHAS accreditation?

Yes. We are CHAS accredited and a Constructionline member.

How do you choose the sealant?

A specification, where there is one, decides it. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Can you follow the specification on our project?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.

Does weather matter for sealant work?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.

What do you need from us to quote?

The main factors are metres of joint, removal, access, the product and how many phases there are. To get a fixed price, send details through our quote form, or phone or email us.

Do you seal on top of existing sealant?

No. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.

Do you check for asbestos before removing sealant?

It can, on some older buildings. That’s why we ask for the asbestos information first, and stop if a material is suspect until it’s tested. HSE guidance on asbestos is a useful reference.