Highland · Scotland
External Mastic in Stor
External mastic in Stor from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Joints pointed up with cement by mistake
- Joints where the bead has come unstuck
- Failed seals between different materials
FAQs for Stor
Is Stor in your area for external mastic?
Yes, Stor is within the area we cover. We work across all of Scotland. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we’ll send you a clear quote.
Do you cover smaller places like Stor?
Yes, Stor is covered. We work across all of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Will it make a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Should I point up the gap in my brickwork?
No. A mortar-filled joint cannot move, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
I’m a tenant. Can you help?
Yes. Ask your landlord first, and we can send them the quote if that helps.
How long will you be here?
It depends on the size of the job, but most jobs take a few hours for a handful of joints, longer for a whole elevation. We will tell you when we quote.
External mastic in Stor, done properly
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. We work on concrete & block, brickwork movement joints and joints between brick and frames, and the jobs we see most are gaps where render, brick and frames meet and moss and dirt in joints with no sealant left.
Outside joints can only be sealed when they’re dry, so work in Stor depends on the weather. Let us know about access to every wall and roofline.
Each job carries a 12-month guarantee.
- Where
- Stor (IV27)
- Wider area
- Highland
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Walls and rooflines in Stor
Stor 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’s 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 Stor itself or nearby, the right material for each joint matters as much as a neat finish.
Stor (Gaelic: Stoer) is in Highland. From the centre of Stor to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Stor is one of 253 places in Highland we cover.
We cover every part of the IV27 postcode area for external mastic. Other places close to Stor include Stoer (1 mile south-west), Lochinver (5 miles south-east), An Druim Beag (5 miles north-east), Scourie More (11 miles north-east) and Scourie (12 miles north-east). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Landmarks near Stor
Open spaces near Stor include Loch na Claise.
When it is not the sealant
New sealant can’t fix everything, and we will tell you before we start. Sealant will not put right:
- Render that’s blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Cutting new joints into brickwork, which is building work rather than sealant work
If you’re not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer before booking.
Surfaces we seal
- Render & cladding joints
- Façade panels
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
What affects the cost of external mastic
There’s no set price list. What we look at:
- The product the joint needs
- Whether the work is at height
- The number and length of the joints
- How many rooms, windows or areas are involved
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- A few pictures by email, if you can
- Roughly how big the job is
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
For a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. We will give you a clear price before any work starts.
How the job changes by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out.
When to call us in Stor
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
The problems people normally mention when they call are:
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
- Water getting into walls through failed joints
In and around Stor, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Whether the sealant suits the joint
- Who does the work, and how experienced they are
- When the joint can take water or movement
- How the joint is cleaned and prepared
How the visit works
At the end, we look at the finished work together and explain the cure time. The visit itself normally takes anything from a few hours to several days, depending on the building, depending on how much there is to do. Outside jobs in Stor need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Let us know about earlier repairs to the joints
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, send an email to info@mrmastic.co.uk.
Read more
Towns and villages near Stor
More services for Stor
Should I try it myself first?
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 fails, we can still redo it.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
For landlords and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.