Kent · England
Garlinge External Mastic
Professional external mastic in and around Garlinge, with every bit of old sealant taken out first and a one-year guarantee.
- Joints where the bead has come unstuck
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
Why it’s worth doing now in Garlinge
Sealing over the top of old mastic does not hold for long. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. In an older home around Garlinge, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
Combining jobs into one visit is generally more efficient than separate visits. We’ll send you a clear quote for the lot.
Why choose Mr Mastic in Garlinge
- Colour agreed with you before we start
- A sealant colour to suit the surroundings
- We leave the area clean and tidy
- 20+ years of sealant experience
Take a look at what affects the cost or what customers say.
External mastic for homes and businesses in Garlinge
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. We work on concrete & block, render & cladding joints and brickwork movement joints, and people most often call us about plants rooting in failed movement joints and joints where the bead has come unstuck.
Houses in smaller places like Garlinge can stand more in the open than those in a built-up town, so exposed walls and rooflines take more wind-driven rain. Joints on those sides are generally the first to go.
Every job comes with a 12-month guarantee.
- Place
- Garlinge (CT9, CT8)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Other services in Garlinge
The process
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes anything from a few hours to several days, depending on the building from start to finish. A visit to Garlinge is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
- For business premises, tell us about site rules or sign-in
Get a quote
If you’re in Garlinge and need external mastic, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Read more
Different surfaces, different methods
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and helps it last.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Garlinge questions
Will you come out to Garlinge?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is external mastic in a coastal place like Garlinge any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
When will the joints need doing again?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do you guarantee your work?
Yes. Every job comes with a one-year guarantee.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
I’m a tenant. Can you help?
Of course. Ask your landlord first, and we can send them the quote if that helps.
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What external mastic looks like in Garlinge
Garlinge is within about 1 mile 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. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Margate station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as Garlinge Primary School and Nursery, larger buildings have long runs of movement joint that eventually need resealing.
Garlinge is about 1 mile west of Margate, in Kent. We provide external mastic to householders, landlords and businesses in Garlinge and nearby, as part of our work across Kent. Across Kent, we cover 922 places, and Garlinge is one of them. Chelmsford is on our list too, about 45 miles from Garlinge.
Work in CT9 and CT8 is quoted and booked the same way as anywhere else. That includes homes and businesses on High Street, Bridge Road and Caxton Road. Nearby, we also carry out external mastic in Westbrook (1 mile north-east), Westgate-on-Sea (1 mile west), Flete (1 mile south-east), Margate (1 mile east) and Westwood (2 miles south-east). Further out, we also cover Canterbury (14 miles south-west), Ramsgate (4 miles south-east), Broadstairs (3 miles east), Whitstable (14 miles west), Deal (11 miles south) and Herne Bay (10 miles west).
Near you in Garlinge
In Garlinge, that means homes and buildings near Hartsdown Academy. For rail, the closest station is Margate station, roughly 0.8 miles north-east of the centre. Well-known places in the area include Westwood Cross (2.2 miles south-east) and Margate Old Town Local History Museum (1.3 miles north-east). Open spaces near Garlinge include Sandwich and Pegwell Bay.
Signs you need external mastic in Garlinge
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Any of these means the joints need attention:
- Joints pointed up with cement by mistake
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
- Sealant that has lost its bond to the brick or render
If you live in an older home near St James, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Questions to ask before booking
- Whether the sealant suits the joint
- Who does the work, and how experienced they are
- What the quote includes, VAT included or not
- What happens if they find a problem under the old sealant
How we quote for external mastic
For a quick quote, just ask. What matters most is:
- The product the joint needs
- The number of rooms or windows
- Whether the work is at height
- The size of the job
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Helping us quote
Before you ask for a quote, have a think about:
- The type of property
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.