Kent · England
External Mastic in Tilmanstone
External mastic for Tilmanstone, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Joints where the bead has come unstuck
- Failed seals between different materials
- Joints pointed up with cement by mistake
When it isn’t the sealant
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Movement that’s more than a sealant joint can take
- Adding movement joints to masonry that has none
- Render that’s blown, hollow or coming away
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Tilmanstone
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Façade panels
- Render & cladding joints
External mastic for homes and businesses in Tilmanstone
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. If you have rain getting behind render or cladding at a joint and joints with sealant missing in places, we can help.
Outside joints can only be sealed when they’re dry, so work in Tilmanstone is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Place
- Tilmanstone (CT14)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best in all weathers.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Outside joints around Tilmanstone
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Goodnestone Park (about 3.5 miles north-west) nearby, there’s older building stock in the area around Tilmanstone as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For an older house near a landmark such as Church of St Andrew, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you let a flat or house near Shepherds Well station, split movement joints are easy to miss on a rental until damp shows inside.
Tilmanstone is about 4 miles west of Deal, in Kent. For external mastic in and around Tilmanstone, please phone 0345 464 0079 or email us for a quick quote. We are based in Crawley and cover Kent. 922 places in Kent are on our list. You can also see our page for Chelmsford, about 50 miles away.
Jobs for external mastic in CT14 works the same way as everywhere else we cover. That includes homes and businesses on Upper Street, Vicarage Lane and Chapel Road. We also cover Elvington (2 miles west), Heronden (2 miles north), Chillenden (2 miles north-west), Barfrestone (2 miles west) and Hammill Park (3 miles north). Further out, we also cover Canterbury (10 miles north-west), Margate (12 miles north), Dover (5 miles south), Folkestone (11 miles south-west), Ramsgate (10 miles north-east) and Broadstairs (12 miles north-east).
Local landmarks in Tilmanstone
The closest station to Tilmanstone is Shepherds Well station, about 3.3 miles south-west. Well-known places in the area include Deal Castle (4.7 miles east) and Buckland Hospital (5.7 miles south).
Landlord and commercial work in Tilmanstone
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What affects the cost of external mastic
Jobs vary more than people expect. What affects the quote:
- Access and height
- How many areas need sealing
- The old material and how stubborn it is
- When we can work, for business premises
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
What to tell us for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Roughly how big the job is
- If someone has resealed it before
- Whether it’s a home or a business
- The address or postcode of the job
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Make sure movement joints are not pointed over
- Fix overflowing gutters above sealed joints
- Act on the first splits you see
- Point out the joints to other trades
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Small splits are the time to act. At that stage it’s a simple cut out and reseal before water has had years to get in.
What we do, step by step
Before we leave, we go over the finished joints with you. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on the size of the job. In a small place like Tilmanstone, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs 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.
Getting ready for the visit
- Mention any tricky access
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved.
Related advice
Also near Tilmanstone
What else we do in Tilmanstone
Common questions in Tilmanstone
Is Tilmanstone within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Shepherds Well station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
How much does external mastic cost in Tilmanstone?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or send us an email with a short description of the job.
Is it OK to seal over old sealant?
No. The old sealant always comes out first.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all.
Do you guarantee your work?
Yes. Each job is guaranteed for twelve months, large or small.