Dumfries and Galloway · Scotland
External Mastic in Portpatrick
External mastic in Portpatrick from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Weeds or debris growing in open joints
- Joints pointed up with cement by mistake
- Failed sealant between panels on a façade
Should I try it myself first?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
External mastic in Portpatrick, done properly
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 so the joint doesn’t stand out. We are often asked to deal with joints where the bead has come unstuck and water getting into walls through failed joints, on render & cladding joints, copings & trims and brickwork movement joints.
Across smaller places in Scotland, stone and harled cottages, farm buildings and newer houses often stand exposed to wind and rain. Outside joints on exposed walls work hard, so they need a sealant that moves with the building.
The work is covered for a year after we finish. If there’s a problem with it, please email us at info@mrmastic.co.uk.
- Location
- Portpatrick (DG9)
- Region
- Dumfries and Galloway
- Guarantee
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What the job involves on each surface
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that’s happened, we rake it out and reseal it properly where it can be done safely.
What affects the cost of external mastic
We quote each job individually. This is what makes a difference:
- Working hours on commercial sites
- Which sealant suits the joint
- Whether the work is at height
- The number of rooms or windows
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
Before you ask for a quote, have a think about:
- How we’d reach the joints
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- Whether it has been sealed before
For a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. We will give you a clear quote before any work starts.
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for.
Outside joints around Portpatrick
Portpatrick is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Portpatrick is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for movement joints and outside wall joints to keep out.
Whether the job is in Portpatrick itself or nearby, the right material for each joint matters as much as a neat finish.
Portpatrick is about 5 miles south-west of Stranraer, in Dumfries and Galloway. We provide external mastic to homeowners, landlords and businesses in Portpatrick. Portpatrick is one of 138 towns and villages in Dumfries and Galloway where we work. For nearby work, see our Glasgow page, about 77 miles away.
We work across DG9 for external mastic and the streets around it. Whether your property is on Main Street, Dinvin Street and St Patrick Street or anywhere close by, we can help. Other places close to Portpatrick include Lochans (4 miles north-east), Stranraer (5 miles north-east), Stoneykirk (6 miles east), Leswalt (6 miles north) and Lime Kiln (6 miles north-east).
What’s near Portpatrick
Nearby you will also find Galloway Community Hospital (5.4 miles north-east). Open spaces near Portpatrick include Old Loch.
When it isn’t the sealant
To be straight with you, some problems need a different trade:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
- Adding movement joints to masonry that has none
If you’re not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer.
Where we work in Portpatrick
- Façade panels
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
What happens on the day
You do not need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access in most cases. Around Portpatrick, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Keep pets and children clear of the area while we work
- For indoor joints, keep the area dry beforehand if you can
- For business premises, tell us about site rules or sign-in
Getting a quote
For external mastic in Portpatrick, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Related advice
What else we do in Portpatrick
Portpatrick: your questions answered
Is Portpatrick in your area for external mastic?
Yes, Portpatrick is within the area we cover. We work across all of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job.
Is Portpatrick within the area you cover?
Yes. Portpatrick is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is the work guaranteed?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we will put it right.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Do you work at height?
It depends on the building. Send us pictures and a rough idea of the height.
Are you insured?
Yes, we are fully insured.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Do you need external mastic in Portpatrick?
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
If you can see any of these, it’s time to have the joints looked at:
- Hard, crazed mastic that has stopped moving
- Movement joints with cracked, split or missing sealant
- Weeds or debris growing in open joints
- Joints pointed up with cement by mistake
In and around Portpatrick, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Whether they’re fully insured
- Which sealant they’ll use, and why
- Is VAT in the price?
- Who does the work, and how experienced they are