North Ayrshire · Scotland
External & façade joints in Lochranza, North Ayrshire
External mastic in Lochranza from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Joints where the bead has come unstuck
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
External mastic in Lochranza
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. If you’re dealing with leaking joints around cladding and façade panels and joints where the bead has come unstuck, we can help, on copings & trims, brickwork movement joints and façade panels alike.
External sealant needs dry surfaces, so outdoor work around Lochranza is planned around the weather. Let us know about access to every wall and roofline.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Lochranza (KA27)
- Region
- North Ayrshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Different surfaces, different methods
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that’s happened, we rake it out and reseal it properly where it can be done safely.
Common problems we fix in Lochranza
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and make things worse.
Look out for these signs:
- Leaking joints around cladding and façade panels
- Joints with sealant missing in places
- Sealant pulling away from one side of the joint
- Damp patches traced to an open external joint
Homes close to Castlekirk include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- Who turns up on the day
- What happens if they find a problem under the old sealant
- What the cure time is
- Which sealant they’ll use, and why
How to look after the new joints
A little care helps the new joints last. We recommend:
- Keep water from gutters off the wall
- Ask before painting over external sealant
- Wash walls gently around the sealant
- Make sure movement joints are not pointed over
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Towns and villages near Lochranza
Other services in Lochranza
External mastic in Lochranza: local notes
Lochranza 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. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Around Lochranza, as everywhere, external mastic is only as good as the preparation behind it.
Lochranza is about 20 miles west of Saltcoats, in North Ayrshire. For external mastic in and around Lochranza, please email us at info@mrmastic.co.uk for a quick quote. We cover North Ayrshire from our Crawley base. Our area takes in 53 places across North Ayrshire. There’s also a page for Glasgow, roughly 41 miles from Lochranza.
All of KA27 is within our area for external mastic. If you need external mastic at a property on Bearlach Dearg and Newton Road or a nearby road, we can help. Neighbouring places we cover for external mastic include Pirnmill (6 miles south-west), Corrie (8 miles south-east), Whitehouse (10 miles north-west), Kingarth (11 miles east) and An Tairbeart (12 miles north-west). For island and remote addresses, the job takes a little more planning.
What’s near Lochranza
A little further out are Lochranza Castle (under half a mile south). Green spaces nearby include Torr Meadhonach and Loch na Davie.
The process
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work begins. The work usually takes a few hours for a handful of joints, longer for a whole elevation. Around Lochranza, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- Mention if the joints have been sealed before
Get a quote
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.
Read more
Why act early in Lochranza
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. Around Lochranza, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why us?
- We never seal over old sealant
- Full insurance on every job
- ARBOMaster approved applicator
- 4.9 on Google from 180+ five-star reviews
Take a look at what affects the cost and our reviews.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
When it isn’t the sealant
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Cracked brickwork or render that needs a builder or plasterer
- Rising or penetrating damp from elsewhere in the wall
- Loose or hollow render, which needs re-rendering
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly before you book.
What we seal
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Concrete & block
FAQs for Lochranza
Do you cover smaller places like Lochranza?
Yes, Lochranza is covered. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do external mastic in Lochranza?
Yes. Our work covers the whole of Scotland, and Lochranza is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we will give you a clear quote.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
What is a movement joint?
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 long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.
Is it OK to fill a movement joint with cement?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose. We will reseal it with a flexible sealant.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator.