West Lothian · Scotland
External Mastic in Blackridge
Movement joints in Blackridge need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
Honest limits
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Rising or penetrating damp from elsewhere in the wall
- Render that’s blown, hollow or coming away
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly.
Where we work in Blackridge
- Render & cladding joints
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
How we handle external mastic in Blackridge
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 so the line blends in. Common call-outs are for plants rooting in failed movement joints and joints where the bead has come unstuck, across concrete & block, façade panels and copings & trims.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. Newer houses need their movement joints and roofline trims kept sound.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Blackridge (EH48)
- Region
- West Lothian
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Show decorators and builders where the movement joints are
- Leave the joints unpainted unless we have said otherwise
- Never let anyone fill a movement joint with mortar
- Walk round the building once a year and look at the joints
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Small splits are the time to act. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
Quotes for external mastic in Blackridge
We do not publish a price list, because no two jobs are the same. The quote depends on:
- Access and height
- Mould in or behind the old joints
- The old material and how stubborn it is
- The product the joint needs
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear price before work begins.
Asking for a quote
Photos by email are helpful but not essential. Try to tell us:
- Where the job is, and your postcode
- The problem you’ve noticed
- The rough size of the job
- Any previous sealing or DIY work
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To get started, send an email to info@mrmastic.co.uk.
Questions from Blackridge
Do you work for landlords with property near Blackridge station?
Yes, rental work is part of what we do. You can send an email to info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before work begins.
Will you come out to Blackridge?
Yes, Blackridge is covered. We work across all of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
How long does the job take?
A typical job takes a few hours to a few days, depending on the length of joint and the access, including the preparation. Your quote will say how long we expect yours to take.
What’s an expansion joint in brickwork?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Will the new joint stand out?
We choose a sealant colour to suit the brick, stone or render. Exterior sealants come in a good range of colours.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Other services in Blackridge
Why it’s worth doing now in Blackridge
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
What you get with us
- We are fully insured
- Anti-fungal sanitary silicone in wet areas
- You choose the colour before work begins
- A choice of colours where the product allows
Take a look at how sealant jobs are priced or customer reviews.
Landlord and commercial work in Blackridge
We also work for property managers and facilities teams. We can quote a run of properties together.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
Outside joints around Blackridge
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that. 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.
Managing a site like Armadale Academy? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Blackridge is about 5 miles west of Bathgate, in West Lothian. Whether you’re in the middle of Blackridge or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our West Lothian coverage runs to 58 places, and Blackridge is one of them. Our Glasgow page covers work nearby, about 20 miles away.
Jobs for external mastic in EH48 works the same way as everywhere else we cover. Whether your property is on Station Road, Main Street and Leishman Court or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Westrigg (1 mile east), Harthill (2 miles south), Greenrigg (2 miles south-east), Eastfield (2 miles south) and Armadale (3 miles east). Larger places within reach include Livingston (10 miles east), Bathgate (5 miles east), Linlithgow (9 miles north-east), Whitburn (3 miles south-east), East Calder (12 miles east) and Broxburn (12 miles east).
Local landmarks in Blackridge
For rail, the closest station is Blackridge station, about 0.5 miles east of the centre. Nearby you will also find Tippethill House Hospital (3 miles east) and Blackridge Community Museum (under half a mile east). Open spaces near Blackridge include Black Loch.
Common problems we fix in Blackridge
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we are asked about most:
- Plants rooting in failed movement joints
- Leaking joints around cladding and façade panels
- Brick movement joints where the sealant has split
- Weathered mastic that no longer stretches
If you let a flat or house near Blackridge station, outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- Whether all the old sealant comes out first
- What insurance they hold
- Which colour the sealant will be
- How the surfaces are prepared before sealing
The process
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours for a handful of joints, longer for a whole elevation. For a place like Blackridge, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
Getting a quote
To get a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. You’ll have a clear quote before we start.