Brighton and Hove · England
External & façade joints in Preston, Brighton and Hove
Sealing brickwork movement joints, render, cladding and façade joints in Preston, with a one-year guarantee on every job. Ask us for a quote.
- Damp patches traced to an open external joint
- Joints where the bead has come unstuck
- Old sealant gone brittle and cracked
Different surfaces, different methods
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
How we handle external mastic in Preston
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We strip the joint back and start again. If you have movement joints filled with mortar instead of sealant and plants rooting in failed movement joints, we can put it right.
In and around Preston, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
Whatever the size of the job, it’s backed by our one-year guarantee in Preston and across Brighton and Hove.
- Location
- Preston (BN1, BN3, BN88)
- Region
- Brighton and Hove
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Do you need external mastic in Preston?
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Most people get in touch after spotting one of these:
- Gaps where render, brick and frames meet
- Joints where the bead has come unstuck
- Brick movement joints where the sealant has split
- Leaking joints around cladding and façade panels
Managing a site like St Bernadette's Catholic Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- Whether the sealant suits the joint
- What the quote includes, VAT included or not
- What happens if they find a problem under the old sealant
- What preparation is included
What happens if it’s left?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the problem grows beyond the joint itself. Around Preston, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.
What you get with us
- Approved under the ARBOMaster scheme
- A sealant colour to suit the surroundings
- We never seal over old sealant
- Domestic, commercial and hotel work
See our cost guide and customer reviews.
How to look after the new joints
After the cure time, these simple habits help:
- Keep movement joints as flexible joints, not mortar
- Point out the joints to other trades
- Act on the first splits you see
- Ask before painting over external sealant
Don’t paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants aren’t designed to be painted.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established.
What happens on the day
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. In a smaller place like Preston, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Let us know about parking restrictions
- Mention if the joints have been sealed before
- Move anything stored near the joints
How to get a quote
Getting a quote is simple: let us know what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Read more
Honest limits
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Cracked brickwork or render that needs a builder or plasterer
- Walls that need new movement joints cut into them
- Render that’s blown, hollow or coming away
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Façade panels
FAQs for Preston
Is Preston within the area you cover?
Yes. Preston is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Preston Park station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
What is a movement joint?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
Where are you based?
We’re based in Crawley, and we work across South East England, London and Scotland.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Why do you put foam in the joint first?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Do you guarantee your work?
Yes. Every job comes with a 12-month guarantee.
What colours does the sealant come in?
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 doesn’t draw the eye.
Also near Preston
Other services in Preston
Walls and rooflines in Preston
Preston is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. With historic houses such as Preston Manor & Gardens (about 0.2 miles south) nearby, there’s older building stock in the area around Preston as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near St John the Evangelist's Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Rented homes near Preston Park station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Preston is about 1 mile north-west of Brighton, in Brighton and Hove. Whether you are in the middle of Preston or further out, external mastic is available for homes and businesses alike. Across Brighton and Hove, we cover 30 places, Preston among them.
We cover every part of the BN1, BN3 and BN88 postcode area for external mastic and the streets around it. Whether your property is on Home Road, Bates Road and Loder Road or anywhere close by, our applicators can take on the job. Being close to the A23, Preston is simple for us to get to. Neighbouring places we cover for external mastic include Withdean (1 mile north), Prestonville (1 mile south), Hollingdean (1 mile east), Seven Dials (1 mile south) and West Hill (1 mile south). Larger places within reach include Saltdean (6 miles south-east), East Saltdean (6 miles south-east), Roedean (3 miles south-east), Rottingdean (4 miles south-east) and Ovingdean (4 miles south-east).
Around Preston
Around Preston, our work takes us to homes and buildings near Preston Park, The Crown and Anchor Inn and Varndean College. Preston has its own railway station: Preston Park station. Nearby you will also find Churchill Square (1.5 miles south) and Brighton Transport Museum (0.5 miles south). For a walk, there’s Newmarket Hill and Ladies Mile.
Landlord and commercial work in Preston
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.