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

Facade Sealing contractors in Sellindge

Work needed on a facade joint in Sellindge? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Old perimeter mastic that has dried out
  • Sealant pulling away from frames or panels
  • Water coming in around window frames
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
Fully insured: £5m PL

Facade sealing for Sellindge sites

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

How the quote is worked out

There’s no standard rate for sealant work, since sites vary so much. What we look at:

  • Whether old sealant has to be cut out first
  • Working within restricted access windows
  • Induction, permit and paperwork requirements
  • Backing rod, priming and other preparation

We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote and we’ll price your job on its own details.

What to include in your enquiry

The more we know, the firmer the quote. When you get in touch, include:

  • Access details, including height
  • What the building is and how it’s used
  • The site address and postcode
  • Asbestos survey details if the building is older

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to speak to us on 01277 525 020 or email the details over with what you know.

About our facade sealing in Sellindge

Our facade sealing work covers external facade joints, window and door perimeters, cladding panel joints and the perimeter joints where frames meet the structure on commercial buildings in Sellindge. Where sealant is the specified fix, we also take on coping and flashing joints. We work on coping and flashing joints, perimeter joints where frames meet the structure and window and door perimeters, and what we’re called in for most is discoloured or dirty facade joints and water coming in around window frames. Searching for sealant specialists in Sellindge? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

Conversions of older rural buildings near smaller places such as Sellindge bring stone, flint, brick and timber up against new glazing. A product that grips an irregular face, with a colour that suits the building’s character, is typically what’s needed.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Place
Sellindge (TN25)
Wider area
Kent
Guarantee
A 12-month guarantee
Quote
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Doing it in-house

Redoing a failed joint usually costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

Mastic packages on Sellindge sites

The South East is one of the drier parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so we time external mastic for dry faces and agree it with the site team. Sellindge lies roughly 55 miles out from central London. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, which keeps mastic packages in demand.

For a contractor working at a hospital such as William Harvey Hospital, 4.7 miles north-west of Sellindge, perimeter and facade sealing is planned around patients and deliveries. With historic properties like Westenhanger Castle (to the south-east of Sellindge) in the area, refurbishment work often meets old masonry that needs compatible sealants.

Sellindge is about 4 miles north-west of Hythe, in Kent. Across the TN25 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 931 places in Kent. There’s a separate page for Brighton, about 53 miles away.

Postcode districts covered here: TN25. Buildings on Downs Way, Woodlees Close and Swan Green are within our area. If your building is just outside Sellindge, we cover Moorstock (1 mile north), Stanford (2 miles east), Postling (3 miles east), Stowting (3 miles north-east) and Skeete (3 miles north-east). Further afield, our area takes in Ashford (6 miles north-west), Canterbury (13 miles north), Dover (13 miles east), Folkestone (7 miles east), Faversham (15 miles north) and Hythe (4 miles south-east).

Local landmarks in Sellindge

For rail, the closest station is Westenhanger station, about 1.6 miles south-east. Other landmarks nearby include William Harvey Hospital (4.7 miles north-west) and Lympne Castle (2.4 miles south). Green spaces nearby include Tolsford Hill and Hatch Park.

Map of Sellindge © OpenStreetMap contributors

When something else is needed

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • Water getting in through cracked render or porous masonry
  • Work on the window or framing system itself
  • Providing access systems for the work

If you’re not sure, just call 01277 525 020 or email us and we will give you a straight answer before you book.

Surfaces we seal

  • Shopfront frames
  • Window and door perimeters
  • Perimeter joints where frames meet the structure
  • Coping and flashing joints
  • Cladding panel joints
  • Stone and brick facade joints

When to call us in Sellindge

Sun, rain and temperature swings wear facade sealant down over the years. The bead hardens, chalks on the surface and loses the flexibility to follow the joint.

Most enquiries start with something like this:

  • Failed seals around shopfront and entrance frames
  • Leaks at window and door perimeters
  • Gaps between rainscreen or cladding panels
  • Draughts around frames and panels

When units on a site such as Evegate Business Park, 2.2 miles to the west of Sellindge, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.

Before you book anyone

  • The named product and why it was chosen
  • How they’ll work around occupants
  • Will RAMS and insurance details be available?
  • Health and safety accreditation such as CHAS

Questions to ask before you appoint anyone

For managing agents and facilities managers

CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.

Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

Questions we are asked in Sellindge

Is Sellindge too small for you to travel to?

No. Places such as Sellindge are covered as much as the big towns. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.

Is a hospital such as William Harvey Hospital somewhere you can work?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

Can you work while the building is occupied?

In the majority of cases, yes. We phase the work so most of the building stays in use.

Does the weather affect the 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.

Do you have public liability insurance?

Yes. Our insurance certificate can be sent alongside the quote.

Do you work to architects’ specifications?

Yes. Include it with the drawings when you ask for a quote, and we will price the work to it, flagging anything that needs clarifying.

Do you use silicone for external joints?

The product follows the joint’s movement, the surfaces and the specification. Specifications often refer to BS EN 15651-1 for facade sealants or BS EN 15651-2 for glazing.

From enquiry to sign-off

Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. Jobs in and around smaller places like Sellindge are normally planned as a single 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. Failed beads are removed in full.
  4. Primer is applied where the maker specifies it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. We go over the completed work with you before leaving.

What we need from you

  • Make sure the joints can be reached
  • Warn occupants and staff about the work
  • Have the specification and drawings to hand

Getting a fixed quote

Let us know the site, the scope and your timescale, and we will put a fixed quote together. The easiest way is to speak to us on 01277 525 020 or email us.

Get a quick quote

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