Na h-Eileanan Siar · Scotland
Leverburgh External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Leverburgh and across Na h-Eileanan Siar. Fully insured, ARBOMaster approved and guaranteed for a year.
- Brick movement joints where the sealant has split
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
How we handle external mastic in Leverburgh
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall. We’re often asked to deal with plants rooting in failed movement joints and damp patches traced to an open external joint, on copings & trims, render & cladding joints and joints between brick and frames.
Outside joints can only be sealed when they’re dry, so work in Leverburgh depends on the weather, and longer journeys are planned in advance. Let us know about access to every wall and roofline.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Leverburgh (HS5)
- Region
- Na h-Eileanan Siar
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’re 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.
How we quote for external mastic
Every job gets its own quote. This is what makes a difference:
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- The product the joint needs
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please email us at info@mrmastic.co.uk.
Asking for a quote
What to tell us when you ask for a quote:
- A few pictures by email, if you can
- The rough size of the job
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
For a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. You will have a clear quote before any work starts.
Landlords, agents and businesses in Leverburgh
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What happens on the day
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the building. In smaller Scottish places, parking is generally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- First, the joints are inspected and the access agreed.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Mention any tricky access
- Move anything stored near the joints
- Mention any parking rules near the property
How to get a quote
For external mastic in Leverburgh, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Related advice
What the job involves on each surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it and keep the sealant to the right depth.
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best year round.
Honest limits
We will not take on work that will not last, so these are the limits:
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
- Render that’s blown, hollow or coming away
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer before booking.
What we seal
- Render & cladding joints
- Façade panels
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
Walls and rooflines in Leverburgh
Leverburgh is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. On the islands, wind and salt spray are hard on outside sealant.
Around Leverburgh, as everywhere, external mastic is only as good as the preparation behind it.
Leverburgh is about 39 miles south-west of Stornoway, in Na h-Eileanan Siar. If you need external mastic in Leverburgh, please drop us a line at info@mrmastic.co.uk for a quick quote. We cover Na h-Eileanan Siar from our Crawley base, Leverburgh included. Leverburgh is one of 87 places in Na h-Eileanan Siar where we work.
Here we cover the HS5 postcode area for external mastic. We also cover the places around Leverburgh: An t-Ob (1 mile north), Ruisgarry (6 miles south-west), Clachan Shannda (10 miles south-west), Direcleit (12 miles north-east) and Lochmaddy (12 miles south-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
What’s near Leverburgh
A little further out are Seallam! Visitor Centre (2.7 miles north-west). Green spaces nearby include Roineabhal and Loch Steisevat.
FAQs for Leverburgh
Is Leverburgh within the area you cover?
Yes, smaller places are covered as well as towns. 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.
Does living near the coast affect external mastic in Leverburgh?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
How long will you be here?
Typically it takes a few hours to a few days, depending on the length of joint and the access. Larger jobs naturally take longer.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is normally a movement joint. It lets the bricks expand without cracking and needs a flexible seal, not mortar.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Do you use backing rod?
Backing rod controls the sealant depth and keeps it off the back of the joint. That way it bonds to the two sides only and can stretch.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
What does external mastic cost?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
What else we do in Leverburgh
Signs you need external mastic in Leverburgh
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Look out for these signs:
- Cracked joints where brick meets render or frames
- Panel joints letting water in
- Weeds or debris growing in open joints
- Weathered mastic that no longer stretches
Whether the job is in Leverburgh itself or nearby, the right material for each joint matters as much as a neat finish.
What your quote should include
- Whether the sealant suits the joint
- Whether you can choose the colour
- How long to leave it before use
- Whether all the old sealant comes out first