Falkirk · Scotland
External & façade joints in California, Falkirk
Sealing brickwork movement joints, render, cladding and façade joints for California, backed by a 12-month guarantee. Ask us for a quote.
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
- Damp patches traced to an open external joint
What we’re called out for in California
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
If you can see any of these, it’s time to have the joints looked at:
- Panel joints letting water in
- Failed seals between different materials
- Old sealant gone brittle and cracked
- Rigid filler in a joint that should flex
For landlords with property near Polmont station, split movement joints are easy to miss on a rental until damp shows inside.
Questions to ask before booking
- Whether VAT is included
- What guarantee comes with the work
- Which colour the sealant will be
- Whether they seal over old material or remove it
About our external mastic in California
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. We work on brickwork movement joints, copings & trims and façade panels, and people most often call us about moss and dirt in joints with no sealant left and hard, crazed mastic that has stopped moving.
External sealant needs dry surfaces, so outdoor work around California is planned around the weather, and longer journeys are planned in advance. Let us know about access to every wall and roofline.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Location
- California (FK1)
- Region
- Falkirk
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What the job involves on each surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Aftercare tips
Aftercare is simple:
- Check the sealant is paintable before painting near it
- Never let anyone fill a movement joint with mortar
- Have failed joints looked at early
- Check external joints each spring
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Places near California
Other services in California
The process
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a handful of joints, longer for a whole elevation. For a place like California, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We look at every joint and agree a colour to suit the wall.
- 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.
How to prepare
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Getting a quote
For a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
Related advice
External mastic in California: local notes
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Plenty of Scottish homes have harled walls, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
Managing a site like Graeme High School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
California is about 3 miles south-east of Falkirk, in Falkirk. Every kind of property in California is covered for external mastic, old or new, large or small. The work is guaranteed for a year. 50 places in Falkirk are on our list. There’s also a page for Edinburgh, roughly 21 miles from California.
Every address in FK1 is within our area for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Church Road, Main Street and Mamre Drive or a nearby road, we can help. If you’re just outside California, we cover Shieldhill (1 mile north-west), Wallacestone (1 mile north-east), Reddingmuirhead (1 mile north-east), Redding (1 mile north) and Brightons (2 miles north-east). We also work in nearby towns such as Falkirk (3 miles north-west), Grangemouth (3 miles north), Bo'ness (6 miles north-east), Larbert (5 miles north-west), Stenhousemuir (5 miles north-west) and Denny (7 miles north-west).
What’s near California
In California, that means homes and buildings near Callendar Park. For rail, the closest station is Polmont station, about 1.9 miles north-east of the centre. A little further out are Falkirk Community Hospital (2.6 miles north-west) and Callendar House (2 miles north). Not far away are Callendar Lake.
Common questions in California
Can you do external mastic in California?
Yes, California is within the area we cover. Our work covers the whole of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
Can you help a landlord with a rental near Polmont station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can be quoted together. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
What do you need from me for a quote?
A short description and the location, plus pictures if you have them. If we need more, we’ll ask.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover California, along with the rest of our area.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
How do I get a quote for external mastic in California?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we’re using and why.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. A flexible sealant is the right fill.
Landlords, agents and businesses in California
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Walls that need new movement joints cut into them
- Subsidence or other structural problems
- Cracked brickwork or render that needs a builder or plasterer
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer before booking.
What we seal
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Concrete & block
- Façade panels