Falkirk · Scotland
External Mastic in Larbert
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Larbert. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Old sealant gone brittle and cracked
- Failed sealant between panels on a façade
- Movement joints with cracked, split or missing sealant
Should I try it myself first?
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.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
External mastic in Larbert
Low-level joints can generally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what’s needed to reach them safely. We work on concrete & block, render & cladding joints and façade panels, and common reasons people get in touch are weathered mastic that no longer stretches and leaking joints around cladding and façade panels.
Outside joints can only be sealed when they’re dry, so work in Larbert depends on the weather, and longer journeys are planned in advance. Let us know about access to every wall and roofline.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Larbert (FK5, FK2)
- Region
- Falkirk
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Why act early in Larbert
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In an older home around Larbert, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
Doing several joints on one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why us?
- Any old sealant cut out fully, not covered over
- One-year guarantee on every job
- A sealant colour to suit the surroundings
- Over 20 years’ experience
Read what affects the cost or what customers say.
What happens on the day
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours to a few days, depending on the length of joint and the access. Around Larbert, distance and access matter more than parking. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- 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.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
Ask for a quote
To get a quote, drop us a line 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.
Advice
Do you need external mastic in Larbert?
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, and it tears off the sides.
These are the problems we’re asked about most:
- Water getting into walls through failed joints
- Moss and dirt in joints with no sealant left
- Movement joints filled with mortar instead of sealant
- Gaps where render, brick and frames meet
Rented homes near Larbert station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- How much experience the applicator has
- What preparation is included
- What product goes in the joint
- What insurance they hold
Larbert: your questions answered
Will you come out to Larbert?
Yes, Larbert is covered. Our work covers the whole of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you work for landlords with property near Larbert station?
Yes. We work for landlords and agents as well as householders. Just drop us a line at info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear quote.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose. A flexible sealant is the right fill.
Where do you work from?
We work from Crawley. We cover Larbert and the rest of Falkirk.
Do you do commercial work?
Yes. We can plan bigger jobs in stages to suit the site.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. We pick a colour that works with both materials.
Also near Larbert
Also in Larbert
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for.
External mastic in Larbert: local notes
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
Schools such as Kinnaird Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. For an older house near a landmark such as Tryst Church and Hall, an extension built onto an older house moves differently, and the joint between them takes the strain.
Larbert is about 2 miles north-west of Falkirk, in Falkirk. We carry out external mastic for householders, landlords and businesses in Larbert and nearby, as part of our work across Falkirk. Across Falkirk, we cover 50 places, and Larbert is one of them. Glasgow is on our list too, about 21 miles from Larbert.
We cover every part of the FK5 and FK2 postcode area for external mastic. If you need external mastic at a property on Main Street, Marion Wilson View and Muirhall Road or a nearby road, our applicators can take on the job. You’ll find Larbert on the B905, which makes it straightforward to reach with everything needed for external mastic. If you are just outside Larbert, we cover Stenhousemuir (1 mile east), Torwood (2 miles north-west), Camelon (2 miles south), Bonnybridge (3 miles south-west) and Plean (3 miles north-west). Further out, we also cover Grangemouth (4 miles east), Bo'ness (9 miles east), Denny (3 miles west), Polmont (5 miles south-east), Brightons (5 miles south-east) and Kinneil (8 miles east). Larbert is among the bigger towns we cover in Falkirk.
Near you in Larbert
Locally, jobs take us to homes and businesses close to Falkirk High School and the streets around them. There’s a railway station in Larbert itself: Larbert station. Other landmarks nearby include Royal Scottish National Hospital (less than half a mile north-west) and Callendar House (3.3 miles south-east). Open spaces near Larbert include Callendar Lake.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Point out the joints to other trades
- Keep high-pressure jets off the joints
- Look over the joints every year, ideally after winter
- Leave the joints unpainted unless we have said otherwise
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Once a joint can’t move, the wall finds another way, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
- Damp that isn’t coming from the joint
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before you book.
What we seal
- Render & cladding joints
- Concrete & block
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims