East Lothian · Scotland
Prestonpans External Mastic
External mastic for Prestonpans and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Old sealant gone brittle and cracked
- Weeds or debris growing in open joints
- Failed seals between different materials
Do you need external mastic in Prestonpans?
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and speed up the damage.
These are the problems we are asked about most:
- Sealant that has lost its bond to the brick or render
- Weathered mastic that no longer stretches
- Moss and dirt in joints with no sealant left
- Panel joints letting water in
For landlords with property near Prestonpans station, split movement joints are easy to miss on a rental until damp shows inside.
Questions to ask before booking
- What the cure time is
- What preparation is included
- Are they insured?
- Who does the work, and how experienced they are
How we handle external mastic in Prestonpans
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing and we use one wherever it does. If you’re dealing with weeds or debris growing in open joints and panel joints letting water in, we can help, on render & cladding joints, brickwork movement joints and façade panels alike.
Outside joints can only be sealed when they’re dry, so work in Prestonpans depends on the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
You get a 12-month guarantee, the same in Prestonpans as everywhere else we work.
- Location
- Prestonpans (EH32)
- Wider area
- East Lothian
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on the size of the job. Around Prestonpans, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll take it from there.
Related advice
How to look after the new joints
So the new joints stay in good condition:
- Wash walls gently around the sealant
- Deal with leaking gutters that soak the joints below
- Have failed joints looked at early
- Check external joints each spring
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
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, so it’s worth resealing at the first signs.
Common questions in Prestonpans
Do you cover smaller places like Prestonpans?
Yes, Prestonpans is covered. We work across all of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Prestonpans station?
Yes, we work for landlords and agents. Just send an email to info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear quote.
Can I add another job to the visit?
Yes, we can. More than one area can go on one quote.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
How long does external mastic take?
As a guide, most jobs take a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer, and we will tell you how long to expect.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we’ll sort it.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Landlord and commercial work in Prestonpans
We also work for property managers and facilities teams. Several sites can be quoted together.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Leave it or put it right?
Sealing over the top of old mastic does not hold for long. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. In a place like Prestonpans, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear price for the lot.
Why us?
- Every job guaranteed for a year
- We’re fully insured
- Arbo and Everbuild products
- Approved under the ARBOMaster scheme
Read our cost guide or our reviews.
Places near Prestonpans
Other services in Prestonpans
What affects the quote in Prestonpans
We do not publish a price list, because jobs vary so much. What we look at:
- Access and height
- The type of sealant required
- The number and length of the joints
- How many areas need sealing
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Whether it has been sealed before
- Whether it’s a home or a business
- The address or postcode of the job
- How many joints, rooms or windows are involved
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.
Outside joints around Prestonpans
Prestonpans is within about 1 mile 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. Historic houses like Hamilton House (about 0.2 miles south-east) are a reminder that the area around Prestonpans has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Schools such as Preston Lodge High School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. In the older streets around Prestongrange Parish Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Prestonpans is about 8 miles north-east of Bonnyrigg, in East Lothian. Wherever you are in the EH32 postcode area, we can carry out external mastic at your property. Our East Lothian coverage runs to 48 places, Prestonpans among them. We also work in Edinburgh, around 9 miles away.
We cover every part of EH32 for external mastic and the streets around it. Local streets include High Street, Station Road and Gardiner Square. Prestonpans is on the B1348 and B1349, so it’s easy for us to get to. Neighbouring places we cover for external mastic include Prestongrange (1 mile south-west), Cockenzie and Port Seton (1 mile north-east), Seton (1 mile east), Tranent (2 miles south-east) and Elphinstone (2 miles south). Within a short drive, we also cover Musselburgh (3 miles west), Haddington (8 miles east), North Berwick (12 miles north-east), Longniddry (4 miles east), Gullane (8 miles north-east) and East Linton (13 miles east). Prestonpans is one of the larger places we cover in East Lothian.
What’s near Prestonpans
In Prestonpans, that means homes and buildings near Gothenburg Tavern, among other places. There’s a railway station in Prestonpans itself: Prestonpans station. A little further out are Seton Castle (1.9 miles east) and Battle of Prestonpans Jacobite Museum (within half a mile north-west).