Highland · Scotland
External & façade joints in Dalwhinnie, Highland
External mastic for Dalwhinnie, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Damp patches traced to an open external joint
- Plants rooting in failed movement joints
- Sealant pulling away from one side of the joint
External mastic in Dalwhinnie, 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. We work on copings & trims, brickwork movement joints and joints between brick and frames, and the jobs we see most are plants rooting in failed movement joints and failed sealant between panels on a façade.
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.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Dalwhinnie (PH19)
- Wider area
- Highland
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Dalwhinnie: your questions answered
Can you do external mastic in Dalwhinnie?
Yes, Dalwhinnie is within the area we cover. Our work covers the whole of Scotland. Just drop us a line at info@mrmastic.co.uk with a few details of the job.
Will you come out to Dalwhinnie?
Yes, Dalwhinnie is covered. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Are you insured?
Yes. Mr Mastic is fully insured.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Will there be a smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply send an email to info@mrmastic.co.uk.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Pointing it stops it working. A flexible sealant is the right fill.
Other services in Dalwhinnie
Walls and rooflines in Dalwhinnie
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Dalwhinnie is in the west of Scotland, which is wetter than the east, which means movement joints and outside wall joints has to cope with a lot of rain.
In and around Dalwhinnie, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. For landlords with property near Dalwhinnie station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Dalwhinnie is about 37 miles south of Inverness, in Highland. Dalwhinnie gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 253 places in Highland are on our list, large and small. Dundee is on our list too, about 58 miles from Dalwhinnie.
We cover every part of the PH19 postcode area for external mastic. We cover properties on General Wade's Military Road, Trium View and Ben Alder Road and the roads around them. Neighbouring places we cover for external mastic include Etteridge (6 miles north-east), Laggan (6 miles north), Gergask (6 miles north), Newtonmore (10 miles north-east) and Kingussie (12 miles north-east). If you’re somewhere remote, a little more planning is needed.
What’s near Dalwhinnie
There’s a railway station in Dalwhinnie itself: Dalwhinnie station. Open spaces near Dalwhinnie include Loch Caoldair.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Fix overflowing gutters above sealed joints
- Have failed joints looked at early
- Clear growth from the base of walls and joints
- Point out the joints to other trades
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
How the job changes by surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so the movement is taken up.
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
What happens if it’s left?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost near the open joint, so the damage spreads beyond the joint. 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.
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 the work is at height. Your quote takes all of that into account.
Why choose Mr Mastic in Dalwhinnie
- Quality sealants from Arbo and Everbuild
- 12-month guarantee on every job
- Anti-fungal sanitary silicone in wet areas
- Fully insured
Take a look at how sealant jobs are priced and what customers say.
Work for landlords, hotels and businesses
Letting agents and landlords in Dalwhinnie can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
The process
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. Outdoor work around Dalwhinnie depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
We quote each job on its own. Just send an email to info@mrmastic.co.uk with the details, and photos are welcome.
Advice
What sealant work can’t fix
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Render that is blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Cracking across the wall rather than at a joint
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think before booking.
Where we work in Dalwhinnie
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Façade panels