North Ayrshire · Scotland
Kilmory External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Kilmory, backed by a 12-month guarantee. Ask us for a quote.
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
- Failed sealant between panels on a façade
What we do, step by step
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and clear up. It normally takes a few hours for a handful of joints, longer for a whole elevation. Outside jobs in Kilmory need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Work indoors is not affected.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
How to get a quote
Getting a quote is simple: let us know the job and the location. A few pictures by email make the job easier to understand.
Read more
External mastic in Kilmory, done properly
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. If you have leaking joints around cladding and façade panels and rigid filler in a joint that should flex, we can put it right, on copings & trims, brickwork movement joints and joints between brick and frames alike.
Outside joints can only be sealed when they’re dry, so work in Kilmory depends on the weather. Tell us how to reach each wall, gutter and roofline.
The work is covered for a year after we finish. If anything isn’t right with it, send an email to info@mrmastic.co.uk.
- Location
- Kilmory (KA27)
- Region
- North Ayrshire
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What happens if it’s left?
A failed movement joint lets water into the wall. Dealing with it early keeps the repair to the joint, rather than the wall around it. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
Why book with us
- White, clear, grey or coloured to suit, where the product allows
- Colour picked to suit the job
- More than 20 years in sealant work
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at what affects the cost and customer reviews.
Nearby places to Kilmory
More services for Kilmory
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Quotes for external mastic in Kilmory
Every job gets its own quote. This is what makes a difference:
- The number of rooms or windows
- How much there is to do
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and give you a clear quote before any work starts.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- How we’d reach the joints
- Roughly how big the job is
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work and send you a clear quote.
Landlords, agents and businesses in Kilmory
If you manage several properties in or around Kilmory, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Different surfaces, different methods
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. We reseal them with a low-modulus sealant over backing rod.
What we cannot put right
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Render that is blown, hollow or coming away
- Subsidence or other structural problems
- Cracking across the wall rather than at a joint
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think before you book.
What we seal
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
What external mastic looks like in Kilmory
Kilmory 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. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
If you live in an older home near Kilmory Parish Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. In and around Kilmory, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Kilmory is about 22 miles south-west of Saltcoats, in North Ayrshire. Across the KA27 area, we can carry out external mastic at your property. Our area takes in 53 places across North Ayrshire, from the larger towns to small villages. You can also see our page for Glasgow, about 47 miles away.
Postcode districts we cover here for external mastic: KA27. If you are just outside Kilmory, we cover Drimlabarra (4 miles east), North Feorline (6 miles north-west), Whiting Bay (6 miles north-east), Blackwaterfoot (6 miles north-west) and Birchburn (6 miles north-west). Remote and island addresses need a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Around Kilmory
Other landmarks nearby include Kildonan Castle (4.8 miles east). For a walk, there’s Urie Loch.
Common questions in Kilmory
Is Kilmory within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Can you do external mastic in Kilmory?
Yes, Kilmory is within the area we cover. Our work covers the whole of Scotland. You can email us at info@mrmastic.co.uk and let us know what needs doing.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Can landlords and businesses book you?
Yes, we do. We work in homes, commercial premises and hotels.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
How long does external mastic last?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges and have them redone then.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.