Na h-Eileanan Siar · Scotland
External & façade joints in Balivanich, Na h-Eileanan Siar
External mastic across Balivanich and nearby, with old sealant always removed completely and a 12-month guarantee.
- Sealant pulling away from one side of the joint
- Failed seals between different materials
- Old sealant gone brittle and cracked
What we can’t put right
To be straight with you, there are a few things sealant won’t fix:
- Cracking across the wall rather than at a joint
- Failed render or damaged cladding panels
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Copings & trims
About our external mastic in Balivanich
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. We’re often asked to deal with rain getting behind render or cladding at a joint and movement joints with cracked, split or missing sealant, across façade panels, render & cladding joints and joints between brick and frames.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. On newer homes, the movement joints and roofline trims are what need watching.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Place
- Balivanich (HS7)
- Wider area
- Na h-Eileanan Siar
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How the job changes by surface
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap and keep the sealant to the right depth.
Places near Balivanich
Also in Balivanich
What we do, step by step
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take a few hours to a few days, depending on the length of joint and the access. Somewhere like Balivanich may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- Move anything stored near the joints
- Mention if the joints have been sealed before
- For business premises, tell us about site rules or sign-in
Get a quote
Want a quote for external mastic? Please email us at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
Do you need external mastic in Balivanich?
Some movement joints have been pointed up with mortar by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
The most common problems we see are:
- Movement joints with cracked, split or missing sealant
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
Whether the job is in Balivanich itself or nearby, the right material for each joint matters as much as a neat finish.
Questions to ask before booking
- Whether you can choose the colour
- How long the guarantee is
- How much experience the applicator has
- Whether they seal over old material or remove it
Balivanich questions
Does living near the coast affect external mastic in Balivanich?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Can you do external mastic in Balivanich?
Yes. We work across all of Scotland, and Balivanich is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing, and we’ll give you a clear quote.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee.
How often do external joints need resealing?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year and renew it when it starts to fail.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses and we are fully insured.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Balivanich buildings and the weather
Balivanich is close to 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. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
Around Balivanich, as everywhere, external mastic is only as good as the preparation behind it.
Balivanich is in Na h-Eileanan Siar. Our applicators cover external mastic for householders, landlords and businesses in Balivanich and the surrounding area. Balivanich is one of 87 towns and villages in Na h-Eileanan Siar we cover for external mastic.
Work in HS7 works the same way as everywhere else we cover. Local streets include Tindill Road, Tuzo Close and Winfield Way. Nearby, we also carry out external mastic in Baile a' Mhanaich (1 mile north-west), Creag Ghoraidh (4 miles south-east), Grimsay (5 miles south-east), Locheport (7 miles north-east) and Claddach Kirkibost (7 miles north). As one of the bigger places in Na h-Eileanan Siar, Balivanich has homes, rented property and businesses of every kind. If you’re somewhere remote, the job takes a little more planning.
Around Balivanich
A little further out are Uist and Barra Hospital (less than half a mile north-west) and Borve Castle (2.7 miles south). The countryside around Balivanich includes Loch Fada and Stiaraval.
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Avoid pressure-washing directly into sealant joints
- Look over the joints every year, ideally after winter
- Show decorators and builders where the movement joints are
- Fix overflowing gutters above sealed joints
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How much old sealant there is and how hard it is to remove
- The product the joint needs
- How many areas need sealing
- When we can work, for business premises
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What to tell us for a quote
What to tell us when you ask for a quote:
- How we’d reach the joints
- The type of property
- The rough size of the job
- The problem you’ve noticed
There’s no standard price list. Instead, we give you a clear price for your job. To get started, email us at info@mrmastic.co.uk.
Landlord and commercial work in Balivanich
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
We also work for property managers and facilities teams in Balivanich and across Na h-Eileanan Siar. Several sites can go on one quote, and we are fully insured.