Kent · England
Donkey Street External Mastic
External mastic for Donkey Street, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Joints with sealant missing in places
- Joints pointed up with cement by mistake
- Plants rooting in failed movement joints
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether the work is at height
- How many rooms, windows or areas are involved
- When we can work, for business premises
- How much old sealant there is and how hard it is to remove
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
Asking for a quote
Before you ask for a quote, have a think about:
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- The type of property
- Pictures of the joints, sent by email
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved and give you a clear quote.
External mastic for homes and businesses in Donkey Street
A movement joint is only as good as its depth. 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. Typical jobs include damp patches traced to an open external joint and hard, crazed mastic that has stopped moving, across render & cladding joints, façade panels and concrete & block.
Outside joints can only be sealed when they’re dry, so work in Donkey Street is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
All our work comes with a 12-month guarantee.
- Where
- Donkey Street (TN29)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What the job involves on each surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joints work hard every day. We choose the product to suit.
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and protects the render itself.
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Failed render or damaged cladding panels
- Rising or penetrating damp from elsewhere in the wall
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before booking.
Where we work in Donkey Street
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
- Render & cladding joints
Keeping the joints in good condition
Aftercare is simple:
- Check the sealant is paintable before painting near it
- Wash walls gently around the sealant
- Keep movement joints as flexible joints, not mortar
- Point out the joints to other trades
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Nearby places to Donkey Street
Other services in Donkey Street
Walls and rooflines in Donkey Street
Donkey Street is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Westenhanger station, split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Church of All Saints, an extension built onto an older house moves differently, and the joint between them takes the strain.
Donkey Street is about 4 miles south-west of Hythe, in Kent. If you need external mastic in Donkey Street, please phone 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Kent, Donkey Street included. We cover 922 towns and villages across Kent, large and small. Our Crawley page covers work nearby (52 miles or so).
Jobs for external mastic in TN29 is quoted and booked the same way as anywhere else. Other places close to Donkey Street include Dymchurch (1 mile south), West Hythe (2 miles north-east), Lympne (2 miles north-east), Palmarsh (2 miles north-east) and Berwick (2 miles north-east). Larger places within reach include Ashford (9 miles north-west), Dover (14 miles north-east), Folkestone (7 miles east), Hythe (4 miles north-east), Tower Hamlets (14 miles north-east) and Hawkinge (8 miles north-east).
Local landmarks in Donkey Street
Typical jobs here are in homes near The Shepherd And Crook Public House, among other places. For rail, the closest station is Westenhanger station, roughly 3.4 miles north-east of the centre. Other landmarks nearby include Lympne Castle (1.7 miles north-east) and Hythe Museum (3.6 miles east). For a walk, there’s Tolsford Hill.
Landlord and commercial work in Donkey Street
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
For anyone letting property in or around Donkey Street, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
What we do, step by step
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours for a handful of joints, longer for a whole elevation, depending on the size of the job. In a small place like Donkey Street, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Move anything stored near the joints
- Mention any parking rules near the property
- Mention any tricky access
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or send us an email and describe the job, and photos are welcome.
Related advice
Questions from Donkey Street
Does the coastal weather in Donkey Street affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
I let a flat near Westenhanger station. Can you help?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render so the joint does not draw the eye.
Can new sealant go over the old?
No, it won’t last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
How much does external mastic cost in Donkey Street?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before we start.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used before we leave.
Why act early in Donkey Street
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the damage spreads beyond the joint. In a small place like Donkey Street, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Why book with us
- We leave the area clean and tidy
- Full insurance on every job
- Colour picked to suit the job
- Anti-fungal silicone where joints get wet
Take a look at our cost guide or what customers say.