Kent · England
External & façade joints in Boyden Gate, Kent
External mastic for Boyden Gate, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant that has lost its bond to the brick or render
- Cracked joints where brick meets render or frames
- Movement joints with cracked, split or missing sealant
When to call us in Boyden Gate
Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
The most common problems we see are:
- Damp patches traced to an open external joint
- Cracked joints where brick meets render or frames
- Movement joints filled with mortar instead of sealant
- Joints where the bead has come unstuck
If you let a flat or house near Herne Bay station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Before you book anyone
- How hidden problems are handled
- Whether they’re fully insured
- Who turns up on the day
- When the joint can take water or movement
How we handle external mastic in Boyden Gate
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on copings & trims, façade panels and render & cladding joints, and the jobs we see most are hard, crazed mastic that has stopped moving and gaps where render, brick and frames meet.
Somewhere as small as Boyden Gate, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
We stand behind the work with a 12-month guarantee, so you’re covered after we have gone.
- Place
- Boyden Gate (CT3)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of external mastic
The price is agreed before any work begins. It takes into account:
- Access and height
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
What we need to know
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- Any previous sealing or DIY work
- Where the job is, and your postcode
- The type of property
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Also in Boyden Gate
External mastic in Boyden Gate: local notes
Boyden Gate is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Church of St Mary the Virgin, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you look after a building such as Chislet Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Boyden Gate is about 3 miles south-east of Herne Bay, in Kent. Anywhere in CT3, our applicators can take on external mastic. Boyden Gate is one of 922 places in Kent where we work. Our Chelmsford page covers work nearby, about 41 miles away.
Every address in CT3 is within our area for external mastic, from the main roads to the quietest streets. We cover properties on Forge Lane and Church Lane and the roads around them. Close by, we work in Chislet (1 mile south), Highstead (1 mile north-west), Chitty (1 mile south-east), Hollow Street (1 mile south) and Old Tree (1 mile south-west). Larger places within reach include Canterbury (7 miles south-west), Margate (9 miles east), Dover (15 miles south), Ramsgate (10 miles east), Broadstairs (10 miles east) and Whitstable (7 miles west).
Local landmarks in Boyden Gate
Locally, jobs take us to homes and businesses close to Hog & Donkey pub and Grove Ferry Picnic Area. Boyden Gate’s nearest station is Herne Bay station, roughly 3.4 miles west of the centre. A little further out are St Martins Hospital (6 miles south-west). For a walk, there’s West Blean and Thornden Woods.
Landlords, agents and businesses in Boyden Gate
For anyone letting property in or around Boyden Gate, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
Looking after it afterwards
To keep the joints looking good and working properly:
- Point out the joints to other trades
- Keep soil, plants and ivy away from the joints
- Ask before painting over external sealant
- Act on the first splits you see
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
Act while the splits are small. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
FAQs for Boyden Gate
Is external mastic in a coastal place like Boyden Gate any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are usually the first to need attention.
Do you work for landlords with property near Herne Bay station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we’re using and why.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures.
Do you remove the old sealant?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
How long will you be here?
Most jobs take a few hours for a handful of joints, longer for a whole elevation, including the preparation. Your quote will say how long we expect yours to take.
Different surfaces, different methods
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so neither cracks the other.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
What we cannot put right
It helps to know what we cannot do:
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
- Cracks in the bricks or render themselves, away from the joints
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Façade panels
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
What happens on the day
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the building in most cases. For a village or hamlet like Boyden Gate, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- For business premises, tell us about site rules or sign-in
How to get a quote
For external mastic in Boyden Gate, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.