Scottish Borders · Scotland
External & façade joints in Newmill, Scottish Borders
Professional external mastic in and around Newmill, with old sealant always removed completely and a 12-month guarantee.
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
- Brick movement joints where the sealant has split
Honest limits
Sealant isn’t the answer to every problem, and we’d rather say so up front. It will not solve:
- Rising or penetrating damp from elsewhere in the wall
- Render that’s blown, hollow or coming away
- Adding movement joints to masonry that has none
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly before you book.
What we seal
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Concrete & block
About our external mastic in Newmill
On houses, flats and commercial buildings across Newmill, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: 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 joints pointed up with cement by mistake and plants rooting in failed movement joints.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. On newer homes, the movement joints and roofline trims are what need watching.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Newmill (TD9)
- Wider area
- Scottish Borders
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Quotes for external mastic in Newmill
The price is agreed before any work begins. It’s based on:
- The product the joint needs
- The old material and how stubborn it is
- Mould in or behind the old joints
- The size of the job
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
What we need to know
There’s no need for technical detail. It helps if you can tell us:
- Where the job is, and your postcode
- How we’d reach the joints
- Photos by email, if that is easy
- Whether it’s a home or a business
To get a quote, send an email to info@mrmastic.co.uk with the location and a short description of the problem. We will send you a clear quote before any work starts.
What happens if it’s left?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. In a place like Newmill, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
The cost depends on the amount of work, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
Why Newmill clients choose us
- Any old sealant cut out fully, not covered over
- ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
- Experience in homes, commercial sites and hotels
See what affects the cost and what customers say.
More services for Newmill
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best year round.
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Outside joints around Newmill
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.
Around Newmill, as everywhere, external mastic is only as good as the preparation behind it. Harden, about 2.9 miles north, is one of the historic houses in the wider area around Newmill, and older homes nearby need a sealant that suits their walls.
Newmill is about 4 miles south-west of Hawick, in the Scottish Borders. Anywhere in TD9, we cover external mastic for homes and businesses. Newmill is one of 89 places in the Scottish Borders we cover. Our Edinburgh page covers work nearby (41 miles or so).
All of TD9 is covered for external mastic, from the main roads to the quietest streets. With the A7 close by, Newmill is simple for us to get to. Nearby, we also carry out external mastic in Wilton Dean (4 miles north-east), Wilton (4 miles north-east), Hawick (4 miles north-east), Stirches (5 miles north-east) and Burnfoot (5 miles north-east). Larger places within reach include Selkirk (12 miles north), Jedburgh (14 miles north-east), Denholm (9 miles north-east), Copshaw Holm (14 miles south) and Newtown St Boswells (15 miles north-east).
Landmarks near Newmill
Well-known places in the area include Branxholme Castle (1.2 miles north-east) and Hawick Cottage Hospital and Lamp Standard (3.8 miles north-east). Green spaces nearby include Branxholme Easter Loch.
The process
We bring everything the job needs with us, so you don’t need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take anything from a few hours to several days, depending on the building. Outside jobs in Newmill need a dry day, because sealant won’t bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors isn’t affected.
- 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.
Before we arrive
- Let us know about stairs, lifts or work at height
- Tell us about any previous sealing or DIY attempts
- For business premises, tell us about site rules or sign-in
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
Related advice
FAQs for Newmill
Will you come out to Newmill?
Yes. Newmill is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is external mastic in Newmill guaranteed?
All our work, in Newmill and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
What do you need from me for a quote?
Let us know what needs doing and where. If we need more, we’ll ask.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Why do you put foam in the joint first?
That is backing rod, a closed-cell foam. It stops the sealant going in too deep and bonding to three sides.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
For landlords and businesses
Letting agents and landlords in Newmill can book us as well as householders. Sealant work between tenants keeps a property looking cared for.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.