Scottish Borders · Scotland
External Mastic in Ancrum
Problem with your movement joints in Ancrum? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Sealant that has lost its bond to the brick or render
- Rigid filler in a joint that should flex
- Cracked joints where brick meets render or frames
Ancrum questions
Is Ancrum in your area for external mastic?
Yes. We work across all of Scotland, and Ancrum is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing.
Is external mastic in Ancrum guaranteed?
All our work, in Ancrum and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Can tenants book the work?
We are happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
How long does external mastic take?
Most jobs take anything from a few hours to several days, depending on the building, including the preparation. We will confirm how long when we quote.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
What colours does the sealant come in?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We pick the one that suits your wall best.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is generally a movement joint. It lets the bricks expand without cracking.
External mastic for homes and businesses in Ancrum
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it. If you’re dealing with movement joints with cracked, split or missing sealant and rain getting behind render or cladding at a joint, we can help, whatever the surface.
In and around a place like Ancrum, many buildings face open ground and take the full weather. Gutter joints and wall joints take a battering, so they need a sealant that moves with the building.
Our work is backed for twelve months.
- Where
- Ancrum (TD8)
- Region
- Scottish Borders
- Guarantee
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Do you need external mastic in Ancrum?
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Keep an eye out for any of the following:
- Gaps where render, brick and frames meet
- Panel joints letting water in
- Weathered mastic that no longer stretches
- Joints with sealant missing in places
In and around Ancrum, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Before booking anyone
- What guarantee comes with the work
- What product goes in the joint
- Who turns up on the day
- What insurance they hold
Walls and rooflines in Ancrum
Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that.
If you live in an older home near Ancrum Old Parish Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Ancrum is about 10 miles north-east of Hawick, in the Scottish Borders. Whether you are in the middle of Ancrum or further out, external mastic is available for homes and businesses alike. We cover 89 towns and villages across the Scottish Borders, from the larger towns to small villages. You can also see our page for Edinburgh, roughly 38 miles from Ancrum.
Here we cover the TD8 postcode area for external mastic. You’ll find streets such as North Myrescroft, Myrescroft Road and West Myrescroft. If you are just outside Ancrum, we cover Jedburgh (3 miles south-east), Nisbet (3 miles east), Belses (4 miles west), Maxton (4 miles north) and Greycrook (4 miles north-west). Further out, we also cover Galashiels (11 miles north-west), Hawick (10 miles south-west), Kelso (9 miles north-east), Selkirk (10 miles west), Wilton (10 miles south-west) and Melrose (8 miles north-west).
Local landmarks in Ancrum
Other landmarks nearby include Queen Mary's House (2.8 miles south-east) and Timpendean Tower (1.2 miles south). Green spaces nearby include Wooden Loch and Peniel Heugh.
How the job changes by surface
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. We reseal them with an exterior sealant suited to the material.
Cladding and façade panels
If the façade has a specified sealant, that is what we use. Tell us what the building has when you get in touch.
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.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Why act early in Ancrum
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. In an older home around Ancrum, damp from a failed joint can get into timber and plaster.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why Ancrum customers choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- We never seal over old sealant
- We agree the colour with you first
- More than 20 years in sealant work
How to look after the new joints
After the cure time, these simple habits help:
- Leave the joints unpainted unless we’ve said otherwise
- Clear growth from the base of walls and joints
- Keep movement joints as flexible joints, not mortar
- Get split or bare joints resealed while the damage is small
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Quotes for external mastic in Ancrum
We quote each job individually. These are the things that affect it:
- Any mould that needs treating
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
- The type of sealant required
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
You do not need to know the technical terms. Just tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
- Roughly how big the job is
- Photos by email, if that is easy
To get a quote, send an email to info@mrmastic.co.uk with the location and a short description of the problem. You will have a clear quote before work begins.
What else we do in Ancrum
How it works
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on the building. Outside jobs in Ancrum need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- On commercial sites, let us know about site rules
- Mention if the joints have been sealed before
- Let us know about parking restrictions
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.