Kent · England
External & façade joints in Ashurst, Kent
External mastic in Ashurst from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Plants rooting in failed movement joints
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
External mastic in Ashurst, done properly
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render. Common call-outs are for moss and dirt in joints with no sealant left and rigid filler in a joint that should flex, on concrete & block, copings & trims and brickwork movement joints.
In a village or hamlet like Ashurst, older cottages and farm buildings often stand in the open, 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.
Whatever the size of the job, you get the same 12-month guarantee.
- Where
- Ashurst (TN3)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Where a wall is exposed, as many are in small places like Ashurst, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why choose Mr Mastic in Ashurst
- Anti-fungal silicone where joints get wet
- Approved under the ARBOMaster scheme
- White, clear, grey or coloured to suit, where the product allows
- Old sealant always removed completely
Read how sealant jobs are priced and customer reviews.
External mastic in Ashurst: local notes
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. With historic houses such as Groombridge Place (about 1.6 miles south-east) nearby, there’s older building stock in the area around Ashurst as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
Letting a property close to Ashurst Kent station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Ashurst is about 5 miles west of Royal Tunbridge Wells, in Kent. Wherever you are in the TN3 postcode area, we can carry out external mastic at your property. Ashurst is one of 922 places in Kent where we work for external mastic. There’s also a page for Crawley, roughly 15 miles from Ashurst.
Postcode districts we cover here for external mastic: TN3. If you need external mastic at a property on Ashurst Road, Clayton's Lane and Ashurst Hill or anywhere close by, we can help. Other places close to Ashurst include Stone Cross (1 mile east), Teasley Mead (1 mile north-west), Fordcombe (1 mile north-east), Walter's Green (1 mile north) and Groombridge (2 miles south-east). Further out, we also cover Sevenoaks (11 miles north), Royal Tunbridge Wells (5 miles east), Tonbridge (7 miles north-east), Kings Hill (15 miles north-east), Paddock Wood (11 miles east) and Southborough (5 miles north-east).
What’s near Ashurst
Ashurst has its own railway station: Ashurst Kent station. A little further out are Tunbridge Wells Homeopathic Hospital (4.4 miles east) and Bolebroke Castle (2.4 miles west). Green spaces nearby include Broadwater Warren RSPB Reserve.
How it works
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. In a small place like Ashurst, access is normally 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.
- Both sides are cleaned back to sound material and primed if needed.
- 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
- Let us know about earlier repairs to the joints
- Try not to wet indoor joints just before the visit
- Keep children and pets away from the work area
Ask for a quote
For external mastic in Ashurst, call 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Read more
Nearby places to Ashurst
Also in Ashurst
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Common questions in Ashurst
Do you cover smaller places like Ashurst?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you do external mastic in Ashurst?
Yes, Ashurst is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
What is backing rod for?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Where is Mr Mastic based?
We are based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Quotes for external mastic in Ashurst
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Access and height
- Any working-time requirements on site
- How many areas need sealing
- Any mould that needs treating
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- Roughly how big the job is
- The problem you’ve noticed
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
Signs you need external mastic in Ashurst
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Any of these means the joints need attention:
- Failed seals between different materials
- Weeds or debris growing in open joints
- Leaking joints around cladding and façade panels
- Rigid filler in a joint that should flex
In the older streets around Church of St Martin of Tours, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- The length of the guarantee
- What happens if they find a problem under the old sealant
- Which colour the sealant will be
- When the joint can take water or movement
When it is not the sealant
It helps to know what we can’t do too:
- Rising or penetrating damp from elsewhere in the wall
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Where we work in Ashurst
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Copings & trims