East Lothian · Scotland
North Berwick External Mastic
External mastic for North Berwick and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
- Joints with sealant missing in places
How we handle external mastic in North Berwick
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. If you have leaking joints around cladding and façade panels and joints pointed up with cement by mistake, we can put it right.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. Newer houses need their movement joints and roofline trims kept sound.
All our work is covered by our 12-month guarantee.
- Location
- North Berwick (EH39)
- Region
- East Lothian
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What we do, step by step
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access. Somewhere like North Berwick may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First, the joints are inspected and the access agreed.
- 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
- On commercial sites, let us know about site rules
Get a quote
To get a quote, send an email to info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
Read more
Do you need external mastic in North Berwick?
Some movement joints have been pointed up with mortar by mistake. The joint cannot move, so the wall cracks somewhere else instead.
Signs it’s time to call us include:
- Movement joints filled with mortar instead of sealant
- Moss and dirt in joints with no sealant left
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
If you look after a building such as North Berwick High School, its movement joints, gutters and trims need looking after like any other building’s.
Comparing quotes
- What preparation is included
- Whether you can choose the colour
- How long the guarantee is
- Whether all the old sealant comes out first
Other services in North Berwick
FAQs for North Berwick
Do you work for landlords with property near North Berwick station?
Yes, we work for letting agents and landlords. Just email us at info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear price.
Does living near the coast affect external mastic in North Berwick?
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.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
How long does external mastic last?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. A yearly look will tell you when they need doing. Our work comes with a 12-month guarantee.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
Why it’s worth doing now in North Berwick
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. In an older home around North Berwick, damp from a failed joint can get into timber and plaster.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why book with us
- An ARBOMaster approved applicator
- Neat joints and a tidy finish
- Homes, businesses and hotels
- More than 20 years in sealant work
Read what affects the cost and what customers say.
Looking after it afterwards
After the cure time, these simple habits help:
- Deal with leaking gutters that soak the joints below
- Do not let climbing plants root in the sealant
- Never let anyone fill a movement joint with mortar
- Tell anyone working on the walls about the movement joints
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead and let water in behind.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
When it is not the sealant
To be straight with you, there are a few things sealant won’t fix:
- Render that is blown, hollow or coming away
- Damp that is not coming from the joint
- Movement that is more than a sealant joint can take
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before booking.
Surfaces we seal
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Copings & trims
- Façade panels
- Joints between brick and frames
For landlords and businesses
If you manage several properties in or around North Berwick, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
How we quote for external mastic
The quote reflects the job in front of us. We look at:
- Whether the work is at height
- When we can work, for business premises
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- If someone has resealed it before
- How we’d reach the joints
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
External mastic in North Berwick: local notes
North Berwick is close to 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. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Rented homes near North Berwick station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
North Berwick is about 18 miles east of Kirkcaldy, in East Lothian. We provide external mastic to homes and businesses in North Berwick and nearby, as part of our work across East Lothian. 48 places in East Lothian are on our list, from the larger towns to small villages. Edinburgh is on our list too, about 20 miles from North Berwick.
We cover every part of the EH39 postcode area for external mastic and the streets around it. Streets in the area include Station Road, High Street and Market Place. North Berwick is on the A198 and B1346, so it’s easy for us to get to with everything needed for external mastic. Neighbouring places we cover for external mastic include Kingston (2 miles south-west), Dirleton (2 miles west), Whitekirk (4 miles south-east), Gullane (4 miles west) and Drem (4 miles south-west). We also work in nearby towns such as Musselburgh (15 miles south-west), Haddington (7 miles south), Dunbar (9 miles south-east), Tranent (12 miles south-west), Prestonpans (12 miles south-west) and Cockenzie and Port Seton (11 miles south-west). North Berwick is one of the larger places we cover in East Lothian.
What’s near North Berwick
There’s a railway station in North Berwick itself: North Berwick station. Well-known places in the area include Coastal Communities Museum (0.5 miles north-east) and Edington Cottage Hospital (less than half a mile east). Green spaces nearby include North Berwick Law.