East Sussex · England
Tide Mills External Mastic
External mastic for Tide Mills, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Failed sealant between panels on a façade
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a handful of joints, longer for a whole elevation and we leave things clean and tidy. Somewhere like Tide Mills needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Related advice
External mastic in Tide Mills
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 so the line blends in. We work on joints between brick and frames, concrete & block and copings & trims, and people most often call us about panel joints letting water in and failed seals between different materials.
Around Tide Mills, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Tide Mills (BN25, BN9)
- Region
- East Sussex
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Tide Mills
Other services in Tide Mills
Why it’s worth doing now in Tide Mills
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Around Tide Mills, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- 4.9 on Google from 180+ five-star reviews
- A 12-month guarantee on all work
- Fully insured
- We agree the colour with you first
Take a look at what affects the cost or what customers say.
What we’re called out for in Tide Mills
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
If you can see any of these, it’s time to have the joints looked at:
- Panel joints letting water in
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
- Plants rooting in failed movement joints
If you live in an older home near Church of St Andrew, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Before booking anyone
- How long the guarantee is
- Which sealant they’ll use, and why
- What the quote includes, VAT included or not
- What happens if they find a problem under the old sealant
Landlords, agents and businesses in Tide Mills
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
If you manage several properties in or around Tide Mills, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
How to look after the new joints
Looking after new joints is easy:
- Keep high-pressure jets off the joints
- Get split or bare joints resealed while the damage is small
- Leave the joints unpainted unless we’ve said otherwise
- Fix overflowing gutters above sealed joints
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
What the job involves on each surface
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. A primer goes on where the product requires one.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant.
What affects the quote in Tide Mills
For a quick quote, just ask. The main things that affect it are:
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- Access and height
- The amount of work
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
What to tell us for a quote
When you contact us, it’s useful to know:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
Getting a quote is simple: tell us what needs doing and where. A few pictures by email make the job easier to understand.
Tide Mills questions
Does living near the coast affect external mastic in Tide Mills?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Can you help a landlord with a rental near Bishopstone (Sussex) station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
What external mastic looks like in Tide Mills
Tide Mills is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like UTC@Harbourside? Then larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Bishopstone (Sussex) station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Tide Mills is about 1 mile south-east of Newhaven, in East Sussex. Across the BN25 area, we can carry out external mastic at your property. Tide Mills is one of 289 places in East Sussex where we work for external mastic. You can also see our page for Brighton, about 9 miles away.
We work across the BN25 and BN9 postcode area for external mastic. If you need external mastic at a property on Hurdis Road, Seaford Road and Newhaven Road or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Bishopstone (1 mile north-east), Norton (1 mile north-east), Newhaven (1 mile north-west), Denton (1 mile north) and South Heighton (2 miles north). Further out, we also cover Eastbourne (9 miles east), Lewes (7 miles north-west), Hailsham (10 miles north-east), Uckfield (13 miles north), Peacehaven (3 miles west) and Telscombe (4 miles west).
What’s near Tide Mills
Around Tide Mills, our work takes us to homes and buildings near The Hope Inn, Castle Hill and St Peter's School, among other places. For rail, the closest station is Bishopstone (Sussex) station, roughly 0.6 miles east of the centre. Well-known places in the area include Arlington Castle (4.8 miles north-east) and Chailey Heritage Marine Hospital (within half a mile south-west). Green spaces nearby include Itford Hill.