Na h-Eileanan Siar · Scotland
External & façade joints in West Side, Na h-Eileanan Siar
External mastic across West Side and nearby, with old sealant always removed completely.
- Gaps where render, brick and frames meet
- Joints with sealant missing in places
- Moss and dirt in joints with no sealant left
Landlord and commercial work in West Side
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
How we handle external mastic in West Side
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement. If you have sealant that has lost its bond to the brick or render and panel joints letting water in, we can help.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. On newer homes, the movement joints and roofline trims are what need watching.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- West Side (HS2)
- Region
- Na h-Eileanan Siar
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Common problems we fix in West Side
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
The problems people normally mention when they call include:
- Old sealant gone brittle and cracked
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
- Movement joints with cracked, split or missing sealant
In and around West Side, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- Whether you can choose the colour
- Whether VAT is included
- Whether all the old sealant comes out first
- What guarantee comes with the work
When it isn’t the sealant
It helps to know what we can’t do:
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Movement that is more than a sealant joint can take
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Concrete & block
Other services in West Side
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Never let anyone fill a movement joint with mortar
- Check external joints each spring
- Leave the joints unpainted unless we’ve said otherwise
- Keep high-pressure jets off the joints
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
West Side questions
Is external mastic in a coastal place like West Side any different?
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.
Will you come out to West Side?
Yes. West Side is within the area we cover, which takes in towns, villages and rural addresses. We work across all 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.
When is the sealant fully cured?
It depends on the product and the temperature. Before we leave, we’ll tell you the cure time.
What’s an expansion joint in brickwork?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first.
Where is Mr Mastic based?
We work from Crawley. We cover West Side and the rest of Na h-Eileanan Siar, along with the rest of our area.
What the job involves on each surface
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. We prime where the sealant needs it before sealing.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
West Side buildings and the weather
West Side is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Harled (roughcast) walls are common in Scotland, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
Whether the job is in West Side itself or nearby, the right material for each joint matters as much as a neat finish.
West Side is about 11 miles north-west of Stornoway, in Na h-Eileanan Siar. West Side gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. West Side is one of 87 towns and villages in Na h-Eileanan Siar where we work for external mastic.
Jobs for external mastic in HS2 is quoted and booked the same way as anywhere else. We cover properties on Gleann Mor, Heatherhill and Sraid na Loch. Close by, we work in Barabhas (1 mile north-west), Bragar (4 miles west), Shader (4 miles north-east), Borgh (6 miles north-east) and Shawbost (7 miles west). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Landmarks near West Side
Green spaces nearby include Loch Mòr Bharabhais and Roishal More.
How it works
The work is kept neat and contained to the area we’re working on. The job generally takes a few hours for a handful of joints, longer for a whole elevation, and we explain the cure time before we leave. In smaller Scottish places, parking is normally less of an issue than access and distance. Let us know how to find you and how to reach the joints.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- On commercial sites, let us know about site rules
- Clear items away from the joints we are working on
- Plan for the work area to be out of bounds to pets and children
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Read more
Leave it or put it right?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. In a place like West Side, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Why book with us
- Neat joints and a tidy finish
- More than 20 years in sealant work
- We never seal over old sealant
- Arbo and Everbuild products
See what affects the cost and customer reviews.