Highland · Scotland
Glenancross External Mastic
External mastic across Glenancross and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Old sealant gone brittle and cracked
- Moss and dirt in joints with no sealant left
- Joints where the bead has come unstuck
External mastic in Glenancross, done properly
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We strip the joint back and start again. If you are dealing with gaps where render, brick and frames meet and movement joints filled with mortar instead of sealant, we can help, on joints between brick and frames, copings & trims and façade panels alike.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. Newer houses need their movement joints and roofline trims kept sound.
You’re covered for a year from the day we finish. If there’s a problem with it, please drop us a line at info@mrmastic.co.uk.
- Location
- Glenancross (PH40)
- Region
- Highland
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Glenancross questions
Do you cover smaller places like Glenancross?
Yes, Glenancross is covered. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Morar station. Can you help?
Yes, we work for landlords and letting agents. You can email us at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before any work starts.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you will get one quote.
How long does external mastic last?
It varies with how exposed the wall is and how much the joint moves. Look for splits, hardening or edges coming away and have them redone then.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Is it OK to fill a movement joint with cement?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
Do you have insurance?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
What else we do in Glenancross
Outside joints around Glenancross
Glenancross is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Plenty of Scottish homes have harled walls, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
Letting a property close to Morar station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Glenancross is in Highland. Jobs in Glenancross get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Highland, we cover 253 places, Glenancross among them.
Here we cover the PH40 postcode area for external mastic. Main roads around Glenancross include the B8008, so getting to you is simple. We also cover the places around Glenancross: Morar (1 mile north-east), Arisaig (3 miles south), Mallaig (3 miles north), Ardvasar (7 miles north) and Armadale (8 miles north). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Local landmarks in Glenancross
Glenancross’s nearest station is Morar station, about 1 mile north-east. Well-known places in the area include Land (3.2 miles south). Green spaces nearby include Lochan a' Chléirich.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Leave the joints unpainted unless we’ve said otherwise
- Have failed joints looked at early
- Deal with leaking gutters that soak the joints below
- Point out the joints to other trades
Don’t paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Work for landlords, hotels and businesses
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
For anyone letting property in or around Glenancross, several properties can be quoted together. Send us the addresses and the work at each.
Quotes for external mastic in Glenancross
For a quick quote, just ask. What matters most is:
- The product the joint needs
- Mould in or behind the old joints
- Whether the work is at height
- How much there is to do
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Access, such as stairs, a lift or height
- The problem you’ve noticed
- Where the job is, and your postcode
- Whether it has been sealed before
Want a quote for external mastic? Please send an email to info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours to a few days, depending on the length of joint and the access and we leave things clean and tidy. For a place like Glenancross, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
For external mastic in Glenancross, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Read more
Do you need external mastic in Glenancross?
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
Any of these means the joints need attention:
- Joints pointed up with cement by mistake
- Plants rooting in failed movement joints
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
In and around Glenancross, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- How much experience the applicator has
- How long to leave it before use
- What preparation is included
- Is VAT in the price?
When something else is needed
In fairness, some problems need a different trade:
- Movement that is more than a sealant joint can take
- Damp that isn’t coming from the joint
- Cutting new joints into brickwork, which is building work rather than sealant work
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Glenancross
- Concrete & block
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Copings & trims