Falkirk · Scotland
External Mastic in Polmont
External mastic for Polmont, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant that has lost its bond to the brick or render
- Plants rooting in failed movement joints
- Rigid filler in a joint that should flex
How we handle external mastic in Polmont
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. Common call-outs are for panel joints letting water in and hard, crazed mastic that has stopped moving, across render & cladding joints, concrete & block and façade panels.
Outside joints can only be sealed when they’re dry, so work in Polmont depends on the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
Every job is covered by our 12-month guarantee.
- Where
- Polmont (FK2)
- Wider area
- Falkirk
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Subsidence or other structural problems
- Cracked brickwork or render that needs a builder or plasterer
- Adding movement joints to masonry that has none
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly.
Surfaces we seal
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Copings & trims
External mastic in Polmont: local notes
Polmont is within about 3 miles 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. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
If you let a flat or house near Polmont station, outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as Graeme High School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Polmont is about 2 miles south of Grangemouth, in Falkirk. Polmont gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Polmont is one of 50 places in Falkirk where we work for external mastic. You can also see our page for Edinburgh, about 20 miles away.
All of FK2 is within our area for external mastic, from the main roads to the quietest streets. We cover properties on Main Street, Station Road and Jeffrey Terrace and the roads around them. We also cover the places around Polmont: Brightons (1 mile south-west), Rumford (1 mile south), Maddiston (1 mile south), Westquarter (1 mile west) and Redding (1 mile west). We also work in nearby towns such as Falkirk (3 miles west), Bo'ness (4 miles east), Larbert (5 miles north-west), Stenhousemuir (5 miles north-west), Denny (8 miles west) and Bonnybridge (7 miles west). Being one of Falkirk’s larger places, Polmont has every kind of property, from flats to offices.
Near you in Polmont
Polmont has its own railway station: Polmont station. Well-known places in the area include Carribber Castle (2.8 miles south-east) and Falkirk Community Hospital (3.3 miles west). The countryside around Polmont includes Callendar Lake and Cockleroy.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Don’t let climbing plants root in the sealant
- Check external joints each spring
- Deal with leaking gutters that soak the joints below
- Show decorators and builders where the movement joints are
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead and let water in behind.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Leave it or put it right?
Sealing over the top of old mastic does not hold for long. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. In a place like Polmont, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Why Polmont clients choose us
- 20+ years of sealant experience
- Experience in homes, commercial sites and hotels
- Arbo and Everbuild products
- ARBOMaster approved applicator
Take a look at what affects the cost or what customers say.
Questions from Polmont
Does the coastal weather in Polmont 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.
Will you come out to Polmont?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
How often do external joints need resealing?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
Can you reach joints on upper floors?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Tell us about the building and we’ll confirm what access is needed.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Surface by surface
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. We choose the product to suit.
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a handful of joints, longer for a whole elevation. In smaller Scottish places, parking is usually less of an issue than access and distance. Let us know how to find you and how to reach the joints.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Let us know about stairs, lifts or work at height
- Let us know if you’ve seen damp or leaks
Getting a quote
Need a quote? Please email us at info@mrmastic.co.uk with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Landlord and commercial work in Polmont
Letting agents and landlords in Polmont can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.