East Sussex · England
Milton Street External Mastic
External mastic for Milton Street, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Plants rooting in failed movement joints
- Movement joints filled with mortar instead of sealant
- Brick movement joints where the sealant has split
What happens on the day
We bring everything the job needs with us, so you don’t need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. It normally takes a few hours to a few days, depending on the length of joint and the access. In a small place like Milton Street, access is usually 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.
- Old sealant and any debris are cut and raked out.
- 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.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
- Keep children and pets away from the work area
Get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work and send you a clear quote.
Advice
External mastic in Milton Street, done properly
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We strip the joint back and start again. If you are dealing with sealant pulling away from one side of the joint and movement joints filled with mortar instead of sealant, we can put it right, whatever the surface.
Around Milton Street, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Where
- Milton Street (BN26)
- Wider area
- East Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Also near Milton Street
What else we do in Milton Street
Surface by surface
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it. Tell us what the building has when you get in touch.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. The old joint is removed and a sealant that bonds to both sides goes in.
Do you need external mastic in Milton Street?
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
People normally contact us after spotting something like this:
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
- Movement joints with cracked, split or missing sealant
- Failed seals between different materials
For site and facilities teams at buildings such as Alfriston School, its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- How the colour is chosen
- What the quote includes, VAT included or not
- How long the guarantee is
- Is the old sealant removed completely?
Keeping the joints in good condition
After the cure time, these simple habits help:
- Show decorators and builders where the movement joints are
- Never let anyone fill a movement joint with mortar
- Walk round the building once a year and look at the joints
- Leave the joints unpainted unless we have said otherwise
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established.
FAQs for Milton Street
I let a flat near Berwick (Sussex) station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just call 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Is Milton Street within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Where do you work from?
We are based in Crawley, and we work across South East England, London and Scotland.
Is there a guarantee?
Yes. Each job is guaranteed for twelve months, wherever you are.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Is it OK to seal over old sealant?
No. The old sealant always comes out first, so the new sealant bonds properly.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
Walls and rooflines in Milton Street
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. With historic houses such as Alfriston Clergy House (about 1.1 miles south-west) nearby, there’s older building stock in the area around Milton Street as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Rented homes near Berwick (Sussex) station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. For an older house near a landmark such as St Mary and St Peter's Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Milton Street is about 4 miles north-east of Seaford, in East Sussex. Homes, rented property, offices and hotels in Milton Street is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Across East Sussex, we cover 289 places, and Milton Street is one of them. For nearby work, see our Brighton page (13 miles or so).
Postcode districts we cover here for external mastic: BN26. If you are just outside Milton Street, we cover Wilmington (1 mile north-east), Winton (1 mile west), Alfriston (1 mile south-west), Lullington (1 mile south-west) and Dukes Green (1 mile south-west). Within a short drive, we also cover Eastbourne (5 miles south-east), Bexhill-on-Sea (13 miles east), Seaford (4 miles south-west), Lewes (9 miles north-west), Hailsham (5 miles north-east) and Uckfield (11 miles north).
Local landmarks in Milton Street
Typical jobs here are in homes near The Sussex Ox pub and the streets around them. For rail, the closest station is Berwick (Sussex) station, about 1.8 miles north of the centre. Well-known places in the area include Eastbourne District General Hospital (4.4 miles south-east) and Burlough Castle (less than half a mile north-west). The countryside around Milton Street includes Combe Hill.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Landlord and commercial work in Milton Street
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we are fully insured for the work.
Why it’s worth doing now in Milton Street
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Where a wall is exposed, as many are in small places like Milton Street, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Leaving a failed joint normally makes the job bigger, not smaller. If you are not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Why Milton Street clients choose us
- Anti-fungal sanitary silicone in wet areas
- A 12-month guarantee on all work
- White, clear, grey or coloured to suit, where the product allows
- We leave the area clean and tidy
Take a look at how sealant jobs are priced and customer reviews.