Argyll and Bute · Scotland
External & façade joints in Fionnphort, Argyll and Bute
External mastic across Fionnphort and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Sealant that has lost its bond to the brick or render
- Failed seals between different materials
- Panel joints letting water in
External mastic for homes and businesses in Fionnphort
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. Common call-outs are for brick movement joints where the sealant has split and old sealant gone brittle and cracked, on concrete & block, façade panels and brickwork movement joints.
In and around a place like Fionnphort, many buildings face open ground and take the full weather. Gutter joints and wall joints take a battering, so they need a sealant that moves with the building.
You get a 12-month guarantee, the same in Fionnphort as everywhere else we work.
- Place
- Fionnphort (PA66)
- Wider area
- Argyll and Bute
- Guarantee
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
FAQs for Fionnphort
Will you come out to Fionnphort?
Yes, Fionnphort is covered. We work across all of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Does the coastal weather in Fionnphort affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are normally the first to need attention.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will explain our choice.
What is backing rod for?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back.
How much does external mastic cost in Fionnphort?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Can tenants book the work?
We’re happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Also in Fionnphort
Honest limits
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Movement that’s more than a sealant joint can take
- Rising or penetrating damp from elsewhere in the wall
- Walls that need new movement joints cut into them
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer before you book.
Where we work in Fionnphort
- Façade panels
- Concrete & block
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
Signs you need external mastic in Fionnphort
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it cannot stretch and tears as soon as the joint widens.
It’s worth asking for a quote if you see:
- Water getting into walls through failed joints
- Weeds or debris growing in open joints
- Sealant pulling away from one side of the joint
- Cracked joints where brick meets render or frames
In and around Fionnphort, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- Whether all the old sealant comes out first
- Whether the sealant suits the joint
- Is VAT in the price?
- Who does the work, and how experienced they are
Should I try it myself first?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
How we quote for external mastic
Your quote is based on your job. We take into account:
- The size of the job
- Any mould that needs treating
- The number of rooms or windows
- When we can work, for business premises
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- The address or postcode of the job
- Access, such as stairs, a lift or height
- If someone has resealed it before
We quote each job on its own, so the first step is telling us about yours. Simply drop us a line at info@mrmastic.co.uk and describe the job and send pictures if you have them.
Why deal with it now?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. 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.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why book with us
- Any old sealant cut out fully, not covered over
- Over 20 years’ experience
- 4.9 on Google from 180+ five-star reviews
- White, clear, grey or coloured to suit, where the product allows
Read our cost guide and customer reviews.
External mastic in Fionnphort: local notes
Fionnphort is close to 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. The west of Scotland is wetter than the east, which means movement joints and outside wall joints has to cope with a lot of rain.
Whether the job is in Fionnphort itself or nearby, the right material for each joint matters as much as a neat finish.
Fionnphort is in Argyll and Bute. Homes, rented property, offices and hotels in Fionnphort is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Fionnphort is one of 118 towns and villages in Argyll and Bute we cover.
Our applicators cover all of the PA66 postcode area for external mastic. Close by, we work in Baile Mòr (1 mile north-west), Bunessan (5 miles east), Ardtun (5 miles east), Ballygown (15 miles north-east) and Upper Kilchattan (18 miles south). If you’re somewhere remote, a little more planning is needed, so mention it when you ask for a quote.
Local landmarks in Fionnphort
Other landmarks nearby include Iona Heritage Centre (1.2 miles west). Not far away are Loch Poit na h-Ì and Càrn Buidhe.
How to look after the new joints
After the cure time, these simple habits help:
- Deal with leaking gutters that soak the joints below
- Avoid pressure-washing directly into sealant joints
- Look over the joints every year, ideally after winter
- Leave the joints unpainted unless we’ve said otherwise
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Act while the splits are small. At that stage it’s a simple cut out and reseal before water has had years to get in.
What we do, step by step
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. It normally takes a few hours to a few days, depending on the length of joint and the access. Outdoor work around Fionnphort 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.
- 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.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Mention any tricky access
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.