Kent · England
External & façade joints in Thurnham, Kent
Specialist external mastic for Thurnham: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Old sealant gone brittle and cracked
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
What affects the quote in Thurnham
There’s no set price list. The quote depends on:
- Whether old sealant or filler has to be cut out
- The size of the job
- Working hours on commercial sites
- The number of rooms or windows
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
When you contact us, these details help:
- How many joints, rooms or windows are involved
- If someone has resealed it before
- Where the property is
- Pictures of the joints, sent by email
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
External mastic in Thurnham, done properly
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. If you are dealing with joints with sealant missing in places and sealant that has lost its bond to the brick or render, we can help, on brickwork movement joints, concrete & block and joints between brick and frames alike.
Outside joints can only be sealed when they’re dry, so work in Thurnham 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 are covered after we’ve gone.
- Location
- Thurnham (ME14)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Thurnham
Also in Thurnham
What happens if it’s left?
Resealing a run of joints in one go is normally better than patching one at a time. They’ve weathered the same way and it means sorting access once. In a small place like Thurnham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.
Why choose Mr Mastic in Thurnham
- Rated 4.9 stars on Google
- Any old sealant cut out fully, not covered over
- 20+ years of sealant experience
- A 12-month guarantee on all work
Take a look at how sealant jobs are priced or customer reviews.
When to call us in Thurnham
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 new sealant then lets go long before it should.
Keep an eye out for these signs:
- Leaking joints around cladding and façade panels
- Failed seals between different materials
- Hard, crazed mastic that has stopped moving
- Rain getting behind render or cladding at a joint
Homes close to St Mary the Virgin Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Questions to ask before booking
- What happens if they find a problem under the old sealant
- What guarantee comes with the work
- Who does the work, and how experienced they are
- Which sealant they’ll use, and why
Aftercare tips
To keep the joints looking good and working properly:
- Deal with leaking gutters that soak the joints below
- Have failed joints looked at early
- Check external joints each spring
- Show decorators and builders where the movement joints are
Only paint over the joint if we have confirmed the sealant can take paint. Many exterior sealants are not designed to be painted, and paint can crack as the joint moves.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Questions from Thurnham
Do you cover Thurnham for external mastic?
Yes. Our work covers London and the South East, and Thurnham is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do you cover smaller places like Thurnham?
Yes. Thurnham is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for letting agents?
Yes. Domestic, commercial and hotel work are all part of what we do.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
How do I get a quote for external mastic in Thurnham?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Can I add another job to the visit?
Yes. Just list everything you need and you’ll get one quote.
Should I try it myself first?
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.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
If you manage several properties in or around Thurnham, several properties can go on one quote. Send us the addresses and the work at each.
How it works
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and tidy away. It generally takes anything from a few hours to several days, depending on the building. Somewhere like Thurnham needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Mention any sign-in or site rules at work premises
- Clear the area around the work
- Let us know about stairs, lifts or work at height
Get 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 talk you through the work.
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What external mastic looks like in Thurnham
With historic houses such as Stoneacre (about 2.6 miles south) nearby, there’s older building stock in the area around Thurnham as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
For landlords with property near Bearsted station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Valley Park School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Thurnham is about 3 miles north-east of Maidstone, in Kent. Thurnham gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 922 towns and villages across Kent, from the larger towns to small villages. Chelmsford is on our list too, around 31 miles away.
All of ME14 is covered for external mastic. Streets in the area include Thurnham Lane, Aldington Lane and Pilgrims Way, and we cover them all. Other places close to Thurnham include Detling (1 mile north-west), Bearsted (1 mile south-west), Weavering (2 miles south-west), Grove Green (2 miles west) and Harbourland (2 miles west). Further out, we also cover Maidstone (3 miles south-west), Sittingbourne (7 miles north-east), Gravesend (13 miles north-west), Tonbridge (15 miles south-west), Faversham (13 miles east) and Northfleet (14 miles north-west).
What’s near Thurnham
Around Thurnham, our work takes us to homes and buildings near White Horse Wood and Black Horse Public House. The nearest railway station is Bearsted station, roughly 1.1 miles south-west. Well-known places in the area include Allington Castle (3.3 miles west) and KIMS hospital (1.4 miles west). The countryside around Thurnham includes Detling Hill.