Scottish Borders · Scotland
Newstead External Mastic
External mastic across Newstead and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
- Old sealant gone brittle and cracked
External mastic for homes and businesses in Newstead
For buildings in Newstead, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean joint faces and the right depth. We work on joints between brick and frames, façade panels and brickwork movement joints, and common reasons people get in touch are hard, crazed mastic that has stopped moving and movement joints with cracked, split or missing sealant.
Outside joints can only be sealed when they’re dry, so work in Newstead depends on the weather, and longer journeys are planned in advance. Let us know about access to every wall and roofline.
Your job is guaranteed for a year, as with all our work.
- Place
- Newstead (TD6)
- Wider area
- Scottish Borders
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
If you manage several properties in or around Newstead, several properties can be quoted together. Send us the addresses and the work at each.
How we quote for external mastic
For a quick quote, just ask. The main things that affect it are:
- Which sealant suits the joint
- Any working-time requirements on site
- The number and length of the joints
- Access and height
Leaving a failed joint usually makes the job bigger, not smaller. If you’re unsure, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- What’s wrong with the joints now
- The rough size of the job
- How we’d reach the joints
- If someone has resealed it before
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, email us at info@mrmastic.co.uk.
Towns and villages near Newstead
Also in Newstead
Different surfaces, different methods
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant.
Newstead buildings and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home 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.
Around Newstead, as everywhere, external mastic is only as good as the preparation behind it.
Newstead is about 4 miles east of Galashiels, in the Scottish Borders. Our applicators cover external mastic for homes and businesses in Newstead. Our area takes in 89 places across the Scottish Borders. Edinburgh is on our list too, around 31 miles away.
All of TD6 is covered for external mastic. We cover properties on Main Street, Claymires Lane and Back Road. Other places close to Newstead include Melrose (1 mile west), Gattonside (1 mile north-west), Newtown St Boswells (2 miles south-east), Darnick (2 miles west) and Bowden (2 miles south). We also work in nearby towns such as Galashiels (4 miles west), Hawick (13 miles south), Kelso (10 miles east), Selkirk (7 miles south-west), Jedburgh (10 miles south-east) and Wilton (13 miles south).
Landmarks near Newstead
The nearest railway station is Tweedbank station, about 2.5 miles west of the centre. Other landmarks nearby include Commendators House Museum (0.9 miles west) and Castle Holydean (2.9 miles south-west). Green spaces nearby include Eildon Hill North and Bemersyde Moss.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Walls that need new movement joints cut into them
- Rising or penetrating damp from elsewhere in the wall
- Cracking across the wall rather than at a joint
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly before you book.
Surfaces we seal
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Render & cladding joints
- Façade panels
- Brickwork movement joints
Signs you need external mastic in Newstead
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
These are the problems we’re asked about most:
- Rigid filler in a joint that should flex
- Damp patches traced to an open external joint
- Movement joints with cracked, split or missing sealant
- Hard, crazed mastic that has stopped moving
For landlords with property near Tweedbank station, outside joints that have cracked can let damp into a rental, so check them between lets.
Before booking anyone
- What happens if the job turns out different
- Are they insured?
- What preparation is included
- What the cure time is
How the visit works
At the end, we look at the finished work together and tell you how long to leave it. The visit itself generally takes anything from a few hours to several days, depending on the building, depending on the size of the job. Around Newstead, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
- Let us know about parking restrictions
Getting a quote
For external mastic in Newstead, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Related advice
Common questions in Newstead
Is Newstead in your area for external mastic?
Yes. Our work covers the whole of Scotland, and Newstead is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job.
I let a flat near Tweedbank station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we’ll give you a clear quote.
Can you do several jobs on one visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
Are you fully insured?
Yes, we are fully insured.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
What should I tell you?
Let us know what needs doing and where, plus photos if you have them. We’ll ask anything else we need to know.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Newstead.