Na h-Eileanan Siar · Scotland
External Mastic in Sgalpaigh
Problem with your movement joints in Sgalpaigh? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Sealant that has lost its bond to the brick or render
- Old sealant gone brittle and cracked
- Movement joints filled with mortar instead of sealant
How we quote for external mastic
You’ll get a clear quote before any work starts. It takes into account:
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- The product the joint needs
- The size of the job
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What we need to know
Photos help, but a description is a good start. Please mention:
- Access, such as stairs, a lift or height
- If someone has resealed it before
- Where the property is
- What’s wrong with the joints now
Need a quote? Please send an email to info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
About our external mastic in Sgalpaigh
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. Typical jobs include leaking joints around cladding and façade panels and joints pointed up with cement by mistake, on brickwork movement joints, copings & trims and joints between brick and frames.
External sealant needs dry surfaces, so outdoor work around Sgalpaigh is planned around the weather. Let us know about access to every wall and roofline.
You get a 12-month guarantee, the same in Sgalpaigh as everywhere else we work.
- Place
- Sgalpaigh (HS4)
- Region
- Na h-Eileanan Siar
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Walls and rooflines in Sgalpaigh
Sgalpaigh is within about 2 miles of 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. Island jobs need planning around ferries and the weather, so the more notice, the better.
In and around Sgalpaigh, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Sgalpaigh (Gaelic: Scalpay) is in Na h-Eileanan Siar. Homes, rented property, offices and hotels in Sgalpaigh is covered for external mastic. The work is guaranteed for a year. Sgalpaigh is one of 87 places in Na h-Eileanan Siar we cover for external mastic.
Work in HS4 works the same way as everywhere else we cover. We also cover Plocrapool (3 miles south-west), Drinisiadar (3 miles west), Scadabhagh (3 miles south-west), Miabhaig (4 miles west) and Greosabhagh (4 miles south-west). Island and remote addresses take a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Common problems we fix in Sgalpaigh
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
People generally contact us after spotting something like this:
- Gaps where render, brick and frames meet
- Movement joints filled with mortar instead of sealant
- Leaking joints around cladding and façade panels
- Brick movement joints where the sealant has split
For jobs in and around Sgalpaigh, choosing the right material for each joint is as important as a tidy finish.
What your quote should include
- How the joint is cleaned and prepared
- How long the guarantee is
- When the joint can take water or movement
- Is the old sealant removed completely?
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Cracks in the bricks or render themselves, away from the joints
- Structural movement, which needs a surveyor or engineer
- Damp that isn’t coming from the joint
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly.
Surfaces we seal
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Façade panels
- Concrete & block
- Joints between brick and frames
What we do, step by step
We bring everything the job needs with us, so you do not need to buy or prepare anything. Once we have agreed what’s being done, we protect the area and start. It normally takes anything from a few hours to several days, depending on the building. Around Sgalpaigh, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Keep children and pets away from the work area
- Mention any tricky access
- Move anything stored near the joints
Ask for a quote
We do not publish a price list. Instead, we send you a clear quote for your job. To arrange one, drop us a line at info@mrmastic.co.uk.
Advice
FAQs for Sgalpaigh
Does the coastal weather in Sgalpaigh affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is Sgalpaigh within the area you cover?
Yes. Sgalpaigh is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland, including the islands, where work is planned around ferry crossings. Just mention lanes, gates or anything else about the route when you book.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
What is a movement joint?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll explain our choice.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Different surfaces, different methods
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Ask before painting over external sealant
- Deal with leaking gutters that soak the joints below
- Make sure movement joints are not pointed over
- Walk round the building once a year and look at the joints
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Landlords, agents and businesses in Sgalpaigh
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Landlords and letting agents in Sgalpaigh can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.