East Sussex · England
Five Ashes External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Five Ashes. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Damp patches traced to an open external joint
- Failed seals between different materials
- Joints with sealant missing in places
External mastic for homes and businesses in Five Ashes
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. We work on concrete & block, copings & trims and brickwork movement joints, and people most often call us about cracked joints where brick meets render or frames and leaking joints around cladding and façade panels.
In a village or hamlet like Five Ashes, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Whatever the size of the job, you get the same 12-month guarantee in Five Ashes and across East Sussex.
- Location
- Five Ashes (TN20)
- Wider area
- East Sussex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we cannot put right
We will always be straight with you, so here’s what new sealant will not do:
- Walls that need new movement joints cut into them
- Subsidence or other structural problems
- Rising or penetrating damp from elsewhere in the wall
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before you book.
Surfaces we seal
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Copings & trims
When to call us in Five Ashes
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
Keep an eye out for any of the following:
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
- Brick movement joints where the sealant has split
- Plants rooting in failed movement joints
If you live in an older home near Church of the Good Shepherd, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- What happens if the job turns out different
- What preparation is included
- How the colour is chosen
- Are they insured?
Landlord and commercial work in Five Ashes
For anyone letting property in or around Five Ashes, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Five Ashes questions
Is Five Ashes within the area you cover?
Yes, we do. We work across 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 help a landlord with a rental near Crowborough station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
How long before the joint can be used?
It depends on the product and the temperature. Before we leave, we will tell you the cure time.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Do you work at height?
That depends on the building and the joints. Where joints can be reached safely, we will do them. Give us some details and we will confirm the access.
External mastic in Five Ashes: local notes
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 Crowborough station, split movement joints are easy to miss on a rental until damp shows inside. Managing a site like Five Ashes CofE Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
Five Ashes is about 4 miles south-east of Crowborough, in East Sussex. From the centre of Five Ashes to the outskirts, we cover external mastic for every kind of property. Our East Sussex coverage runs to 289 places, Five Ashes among them. You can also see our page for Crawley, about 19 miles away.
Work in TN20 is quoted and booked the same way as anywhere else. That includes homes and businesses on Westfield Close, Leeds Lane and Spring Lane and the roads around them. If you are just outside Five Ashes, we cover Skippers Hill (1 mile north), Butcher's Cross (1 mile north), Woolbridge (1 mile north-east), Wellbrook (1 mile north-east) and Mayfield (2 miles north-east). We also work in nearby towns such as Eastbourne (15 miles south), Bexhill-on-Sea (15 miles south-east), Lewes (13 miles south-west), Hailsham (10 miles south), Crowborough (4 miles north-west) and Uckfield (6 miles south-west).
Local landmarks in Five Ashes
Locally, jobs take us to homes and businesses close to Skippers Hill Manor School and The Five Ashes Inn, among other places. Five Ashes’s nearest station is Crowborough station, roughly 3.3 miles north-west of the centre. A little further out are Tickerage Castle (3.8 miles south-west) and Crowborough War Memorial Hospital (4.3 miles north-west). Green spaces nearby include Selwyns Wood.
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Tell anyone working on the walls about the movement joints
- Deal with leaking gutters that soak the joints below
- Wash walls gently around the sealant
- Keep movement joints as flexible joints, not mortar
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
The process
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Five Ashes, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Try not to wet indoor joints just before the visit
- Clear the area around the work
- Mention any parking rules near the property
How to get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
What the job involves on each surface
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it, or one the system allows. Tell us what the building has when you get in touch.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Towns and villages near Five Ashes
Other services in Five Ashes
Why it’s worth doing now in Five Ashes
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and doesn’t last. In a small place like Five Ashes, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Why choose Mr Mastic in Five Ashes
- 180+ five-star Google reviews
- Domestic, commercial and hotel work
- Approved under the ARBOMaster scheme
- White, clear, grey or another colour, product permitting
See what affects the cost and customer reviews.