The Mastic Doctor team standing beside their branded vans outside an office building
Kent · England

Facade and window perimeter sealing in Boxley, Kent

Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Boxley and the surrounding area. Send photographs or drawings for a fixed quote.

  • Weathered joints at frame-to-structure perimeters
  • Previous reseals run over old sealant
  • Old perimeter mastic that has dried out
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Need facade sealing in Boxley?

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Facade sealing in Boxley, done properly

Weather decides a lot in facade sealing. The sealant needs a dry joint and temperatures inside the maker’s limits, so frosty or damp mornings can hold work back. We build that into the programme and tell you if the forecast changes the plan. Most enquiries involve facade joints cracked through the middle and old perimeter mastic that has dried out, on cladding panel joints, coping and flashing joints and shopfront frames. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Boxley is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Around smaller places like Boxley, building work typically means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

Location
Boxley (ME14)
Region
Kent
Cover
12 months on our workmanship
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Building and refurbishing in Boxley

Rainfall across the South East, Boxley included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, which is why external dates are agreed with the site manager. A number of hotels sit less than 2 miles from Boxley. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.

Historic houses such as Stoneacre, 4 miles south of Boxley, are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products. When units on a site such as Viewpoint Industrial Estate, 1.1 miles to the south of Boxley, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.

Boxley is about 3 miles north of Maidstone, in Kent. Any commercial site in Boxley is covered. 931 places across Kent fall within our area, Boxley among them. London is covered too, around 31 miles from Boxley.

Commercial sites across ME14 are covered for facade joints. For a building on The Street, Styles Lane and Pilgrims Way or nearby, we can quote for facade joints. If your building is just outside Boxley, we cover Dunn Street (2 miles north-east), Lidsing (2 miles north-east), Kit's Coty (2 miles north-west), Lordswood (2 miles north) and Scragged Oak (2 miles north-east). Nearby towns on our patch include Maidstone (3 miles south), Sittingbourne (9 miles east), Gravesend (11 miles north-west), Tonbridge (14 miles south-west), Faversham (15 miles east) and Northfleet (12 miles north-west).

Local landmarks in Boxley

We work on buildings around Valley Park School, The King's Arms and The Larches and the streets around them. The nearest railway station is Maidstone East station, about 2.2 miles south-west of the centre. Well-known places in the area include KIMS hospital (1.4 miles south) and Allington Castle (1.6 miles south-west). The countryside around Boxley includes Burham Down and Boxley Hills.

Map of Boxley © OpenStreetMap contributors

Boxley: questions and answers

Will you take on work at estates like Viewpoint Industrial Estate, close to Boxley?

Yes. Estates, retail parks and business parks around Boxley, Viewpoint Industrial Estate among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.

Is Boxley too small for you to travel to?

No. Places such as Boxley are covered as much as the big towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.

How do you choose the sealant?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Do you replace windows or glass?

No. Glazing, windows and glass replacement aren’t part of our work. We seal the joints around them, such as perimeter joints where frames meet the structure.

Are your applicators CSCS-carded?

Yes. Our applicators hold CSCS cards, which many sites require.

Is old mastic on our building likely to contain asbestos?

In older non-domestic buildings, old sealant can contain asbestos. Check the asbestos register or survey before it is disturbed; if it’s suspected, work stops until it has been tested. Removal of asbestos isn’t something we do.

How long do sealant joints last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.

Different surfaces, different methods

Window and door perimeters

Frame materials vary, and so does the preparation. Primer goes on where the manufacturer specifies it for that substrate.

Perimeter joints at frames and structure

Where framed systems such as shopfronts meet the building structure, there is a perimeter joint to seal. We seal those perimeter joints rather than the system it surrounds.

Should maintenance staff do it?

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.

Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Common problems we fix in Boxley

New sealant run over old sealant rarely holds. Fresh silicone won’t stick to cured silicone, and the patch soon lifts.

Most enquiries start with one or more of the following:

  • Air leaks through failed facade joints
  • Perimeter sealant that has split or peeled away
  • Discoloured or dirty facade joints
  • Weathered facade joints that have lost their grip

Building work at universities like University for the Creative Arts, 3.1 miles south-west of Boxley, is often timed for the summer, mastic included.

What to look for in a quote

  • Are they CHAS accredited or on Constructionline?
  • Whether old or failed sealant will be cut out, not overlaid
  • How joint depth will be controlled
  • Which product they’ll use, and why it suits the joint

How to choose a sealant contractor

For managing agents and facilities managers

Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

How a job runs

Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. For work around Boxley, we aim to finish in one visit, so photos and measurements up front really help. That way the right products come on the day.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. The existing bead comes out in full and both faces cleaned back.
  4. Primer goes on where the product data asks for it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. The finished joints are checked with you.

Getting the site ready

  • Send any specification or drawings in advance
  • Arrange parking or a loading space
  • Send your site hours and access windows

Quotes

For a fixed quote, ring 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.

Get a price

Read more

What happens if it’s left?

Leaving failed perimeter sealant also makes the eventual job bigger: wet edges break down, so repairs may be needed before resealing. Acting at the first sign of splitting keeps the fix simple. Converted and older buildings near places like Boxley tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.

Why clients in Boxley choose us

  • Joints cleaned back to sound surfaces
  • A fixed quote before work starts
  • CHAS accredited contractor
  • Colour options checked against the specified product

Read our cost guide and our accreditations.

Accreditations

Trusted. Accredited. Insured.