East Lothian · Scotland
External Mastic in Gullane
External mastic for Gullane and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Movement joints filled with mortar instead of sealant
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
Common problems we fix in Gullane
Every building moves. 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.
Most people get in touch when they notice one of these:
- Old sealant gone brittle and cracked
- Sealant that has lost its bond to the brick or render
- Cracked joints where brick meets render or frames
- Movement joints with cracked, split or missing sealant
Homes close to St Peter’s Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- Is the old sealant removed completely?
- What insurance they hold
- What product goes in the joint
- How long the guarantee is
How we handle external mastic in Gullane
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render. Typical jobs include panel joints letting water in and plants rooting in failed movement joints, across concrete & block, brickwork movement joints and copings & trims.
Across smaller places in Scotland, stone and harled cottages, farm buildings and newer houses often stand exposed to wind and rain. Gutter joints and wall joints take a battering, so they need a sealant that moves with the building.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Gullane (EH31)
- Wider area
- East Lothian
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
External mastic in Gullane: local notes
Gullane 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. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
If you let a flat or house near Drem station, split movement joints are easy to miss on a rental until damp shows inside.
Gullane is about 6 miles north of Haddington, in East Lothian. We provide external mastic to householders, landlords and businesses in Gullane and the surrounding area, as part of our work across East Lothian. Our area takes in 48 places across East Lothian, from the larger towns to small villages. For nearby work, see our Edinburgh page (16 miles or so).
Here we cover the EH31 postcode area for external mastic. Whether your property is on Main Street, Muirfield Station and Muirfield Terrace or anywhere close by, we can help. Other places close to Gullane include Dirleton (2 miles north-east), Aberlady (2 miles south-west), Drem (2 miles south-east), Kingston (3 miles east) and North Berwick (4 miles east). Within a short drive, we also cover Musselburgh (11 miles south-west), Haddington (6 miles south), Dunbar (12 miles east), Tranent (8 miles south-west), Prestonpans (8 miles south-west) and Cockenzie and Port Seton (7 miles south-west). Being one of East Lothian’s larger places, Gullane has every kind of property, from flats to offices.
Landmarks near Gullane
Gullane’s nearest station is Drem station, about 2.6 miles south-east of the centre. Other landmarks nearby include Edington Cottage Hospital (4.3 miles east) and Heritage Of Golf Museum (0.5 miles west). Green spaces nearby include Skid Hill and Marl Loch.
Common questions in Gullane
Will you come out to Gullane?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Drem station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you.
Do you work for hotels and businesses?
Yes. We can plan bigger jobs in stages.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
How to look after the new joints
Aftercare is simple:
- Keep high-pressure jets off the joints
- Keep water from gutters off the wall
- Check the sealant is paintable before painting near it
- Get split or bare joints resealed while the damage is small
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage.
Towns and villages near Gullane
More services for Gullane
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What we do, step by step
At the end, we look at the finished work together and explain the cure time. The work normally takes anything from a few hours to several days, depending on the building, depending on the amount of work. For a place like Gullane, longer drives are planned in advance. 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Keep children and pets away from the work area
- For business premises, tell us about site rules or sign-in
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, email us at info@mrmastic.co.uk.
Related advice
Landlords, agents and businesses in Gullane
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
How we quote for external mastic
We don’t publish a price list, because jobs vary so much. The quote depends on:
- The number and length of the joints
- The type of sealant required
- When we can work, for business premises
- Whether the work is at height
The cost reflects the work involved, not guesswork. That is why we ask a few questions first.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- A few photos by email, if you can
- Any previous sealing or DIY work
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
If you’re in Gullane and need external mastic, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Surface by surface
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.