Angus · Scotland
External Mastic in Colliston
Sealing brickwork movement joints, render, cladding and façade joints for Colliston, backed by a 12-month guarantee. Ask us for a quote.
- Leaking joints around cladding and façade panels
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
Why deal with it now?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in Colliston
- White, clear, grey or coloured to suit, where the product allows
- Experience in homes, commercial sites and hotels
- Anti-fungal sanitary silicone in wet areas
- More than 20 years in sealant work
Take a look at how sealant jobs are priced or customer reviews.
About our external mastic in Colliston
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Typical jobs include panel joints letting water in and movement joints filled with mortar instead of sealant, on concrete & block, render & cladding joints and façade panels.
External sealant needs dry surfaces, so outdoor work around Colliston is planned around the weather. Tell us how to reach each wall, gutter and roofline.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Colliston (DD11)
- Wider area
- Angus
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What affects the quote in Colliston
Every job gets its own quote. This is what makes a difference:
- When we can work, for business premises
- The number and length of the joints
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you are unsure, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What to tell us for a quote
To make quoting easier, let us know:
- The type of property
- The address or postcode of the job
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
Every job is quoted individually. Simply email us at info@mrmastic.co.uk and describe the job.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What the job involves on each surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it. Tell us what the building has when you get in touch.
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Keep soil, plants and ivy away from the joints
- Ask before painting over external sealant
- Check external joints each spring
- Keep high-pressure jets off the joints
Do not paint over the new sealant unless we have said the product is paintable. Many exterior sealants are not designed to be painted.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
Towns and villages near Colliston
More services for Colliston
What external mastic looks like in Colliston
Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that.
In and around Colliston, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. Rented homes near Arbroath station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Colliston is about 3 miles north-west of Arbroath, in Angus. If you need external mastic in Colliston, please send an email to info@mrmastic.co.uk for a quick quote. We’re based in Crawley and cover Angus. 40 places in Angus are on our list. There’s also a page for Dundee, roughly 15 miles from Colliston.
Postcode districts we cover here for external mastic: DD11. We also cover the places around Colliston: St Vigeans (2 miles south-east), Arbroath (3 miles south-east), Friockheim (3 miles north), Balmirmer (4 miles south-west) and Inverkeilor (5 miles north-east). Further out, we also cover Forfar (10 miles west), Carnoustie (7 miles south-west), Kirriemuir (15 miles west), Brechin (10 miles north), Hunter's Town (7 miles south-west) and Gardynebourg (7 miles south-west).
Local landmarks in Colliston
The nearest railway station is Arbroath station, about 3.2 miles south-east of the centre. Well-known places in the area include Braikie Castle (4 miles north) and St Vigeans Sculptured Stones Museum (2.4 miles south-east).
Colliston questions
I let a flat near Arbroath station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Do you cover smaller places like Colliston?
Yes. Colliston is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Colliston and the rest of Angus, along with the rest of our area.
Will the new joint stand out?
The aim is a neat, even joint in a colour that suits the wall. We’ll talk through colour options before we start from the range available.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Why is there a gap in my brick wall?
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 it works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a few hours for a handful of joints, longer for a whole elevation. Outdoor work around Colliston depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Move anything stored near the joints
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
Get a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, send an email to info@mrmastic.co.uk.
Advice
Honest limits
A few problems are outside what sealant work can do:
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
- Movement that’s more than a sealant joint can take
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think.
Where we work in Colliston
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Façade panels
- Copings & trims