Facade and window perimeter sealing in Westenhanger, Kent
Work needed on a facade joint in Westenhanger? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Damp patches beside frames after rain
- Cladding panel joints that have opened up
- Hard, chalky sealant that no longer flexes
Facade sealing in Westenhanger
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Facade sealing for commercial buildings in Westenhanger
Facade joints are the line of defence between the weather and the building fabric. Once a perimeter seal fails, water tracks in around frames and panels. We remove failed sealant and install a new bead chosen for the joint and how far it moves. We work on shopfront frames, window and door perimeters and coping and flashing joints, and what we’re called in for most is old perimeter mastic that has dried out and gaps between rainscreen or cladding panels. One point of contact handles commercial sealant work in Westenhanger from the first photos to the final walk-round, for single jobs and planned programmes alike.
Conversions of older rural buildings near smaller places such as Westenhanger 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 usually what’s needed.
We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.
- Place
- Westenhanger (CT21)
- Wider area
- Kent
- Cover
- 12 months on every job
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
For managing agents and facilities managers
Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
What the job involves on each surface
Coping and flashing joints
Not every coping or flashing leak is a sealant problem. We tell you if the fix is a roofing or metalwork job rather than a reseal.
Cladding panel joints
Panel joints on cladding and rainscreen systems take movement every day. We use a product rated for the movement and suited to the panel surface, often a low-modulus silicone or hybrid.
Questions about Westenhanger
Is Westenhanger too small for you to travel to?
Not at all. Westenhanger is within our area. We cover Greater London and the counties of the South East. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Can being near the sea in Westenhanger affect the sealant we need?
It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.
Do you offer coloured sealant?
Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We will confirm the colours available for the specified product.
Which sealant do you use on facades?
Low-modulus, neutral-cure silicone suits many facade and perimeter joints. Some joints call for hybrid, PU or polysulphide instead, depending on the substrate and the specification.
How long do sealant joints last?
Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.
What about RAMS and site documents?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
Is it okay to overlay old mastic?
No. A bead run over old sealant soon lifts. We remove the failed sealant, clean the faces, set the depth and reseal.
Common problems we fix in Westenhanger
Adhesive failure, where the sealant peels away from one face, usually comes from poor preparation. Contamination, moisture or skipping the primer the maker specifies leave a weak bond, and movement soon pulls it away.
Any of the following is a good reason to get the joints checked over:
- New sealant peeling off old mastic
- Old perimeter mastic that has dried out
- Damp patches beside frames after rain
- Discoloured or dirty facade joints
Hospital estates such as Royal Victoria Hospital, 5.8 miles to the east of Westenhanger, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.
Before you book anyone
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- What the guarantee covers, and for how long
- Proof of insurance
- The named product and why it was chosen
Should maintenance staff do it?
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
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.
Facade sealing around Westenhanger: points for this area
Westenhanger sits close to the coast, within about 3 miles. Coastal exposure means perimeter and cladding joints work harder than on an inland job, and the sealant, primer and backing need choosing with that in mind. Westenhanger sits in one of the drier corners of the country, the South East. Even so, frost and condensation on steel and glass are common on winter mornings, which is why external dates are agreed with the site manager.
School extensions, at buildings such as Lympne Church of England Primary School, usually run to the summer holidays, mastic included. With historic properties like Westenhanger Castle, 0.3 miles north-west of Westenhanger, in the area, refurbishment work often meets old masonry that needs compatible sealants.
Westenhanger is about 2 miles north-west of Hythe, in Kent. Anywhere in CT21, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Westenhanger is one of 931 places in Kent on our list. For work in that direction, see our Brighton page (54 miles or so).
We take on facade joints across the CT21 postcode area. If your building is just outside Westenhanger, we cover Newingreen (1 mile south), Berwick (1 mile south), Pedlinge (1 mile south-east), Lympne (1 mile south-west) and Sandling (1 mile east). A short drive away, we cover Ashford (8 miles north-west), Canterbury (13 miles north), Dover (12 miles east), Folkestone (6 miles east), Tower Hamlets (12 miles east) and Hawkinge (6 miles east).
Near you in Westenhanger
We work on buildings around Brockhill Park Performing Arts College, Sandling Park and The Royal Oak Public House, among other places. There’s a railway station in Westenhanger itself: Westenhanger station. Well-known places in the area include Hythe Museum (2.5 miles south-east) and Royal Victoria Hospital (5.8 miles east). Not far away are Hatch Park and Tolsford Hill.
From enquiry to sign-off
On arrival, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before any cutting starts, with the work itself typically taking longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. If others near Westenhanger need work, visits can be combined, which keeps travel down. You’ll have a fixed quote before work starts.
- We start with photos, drawings or a visit to see the joints and agree access.
- We confirm the joint type, movement and the specified product.
- Failed beads are removed in full.
- Primer goes on where the product data asks for it.
- Rod goes in to fix the depth, then the joint is sealed and tooled.
- We go over the completed work with you before leaving.
Before we start on site
- Make sure the joints can be reached
- Explain the parking and delivery arrangements
- Share the asbestos register for older buildings
Quotes
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Related advice
What sealant work can’t fix
Not every problem is a sealant problem, and we are upfront when that’s the case. It won’t fix:
- Joints too narrow for the movement they take, which need redesign
- Work on the window or framing system itself
- Render or concrete edges that have broken away
If you’re not sure, just call 01277 525 020 or email us and we will give you a straight answer.
Surfaces we seal
- Stone and brick facade joints
- Coping and flashing joints
- Perimeter joints where frames meet the structure
- Cladding panel joints
- Shopfront frames
- Window and door perimeters