South Lanarkshire · Scotland
External & façade joints in Bothwell, South Lanarkshire
External mastic for Bothwell, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Damp patches traced to an open external joint
- Plants rooting in failed movement joints
- Cracked joints where brick meets render or frames
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
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.
External mastic for homes and businesses in Bothwell
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing. Common call-outs are for panel joints letting water in and plants rooting in failed movement joints, on render & cladding joints, joints between brick and frames and façade panels.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. Newer houses need their movement joints and roofline trims kept sound.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Bothwell (G71)
- Region
- South Lanarkshire
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Landlords, agents and businesses in Bothwell
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
For anyone letting property in or around Bothwell, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Why it’s worth doing now in Bothwell
Sealing over the top of old mastic doesn’t hold for long. New sealant does not bond well to old, weathered sealant, so the old joint is cut out fully first. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Why book with us
- White, clear, grey or coloured to suit, where the product allows
- Arbo and Everbuild products
- Colour agreed with you before work begins
- We never seal over old sealant
Read how sealant jobs are priced or our reviews.
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Keep movement joints as flexible joints, not mortar
- Check external joints each spring
- Get split or bare joints resealed while the damage is small
- Keep soil, plants and ivy away from the joints
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Catch it early and you reduce the risk.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Cracks in the bricks or render themselves, away from the joints
- Render that is blown, hollow or coming away
- Subsidence or other structural problems
If you’re not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
Joints and surfaces we work on
- Copings & trims
- Brickwork movement joints
- Façade panels
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
Bothwell buildings and the weather
Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex. The west of Scotland is wetter than the east, which means movement joints and outside wall joints has to cope with a lot of rain.
For landlords with property near Blantyre station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Managing a site like Uddingston Grammar School? Then its movement joints, gutters and trims need looking after like any other building’s. Homes close to Bothwell Evangelical Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Bothwell is about 3 miles north of Hamilton, in South Lanarkshire. We carry out external mastic for homes and businesses in Bothwell and the surrounding area, as part of our work across South Lanarkshire. Bothwell is one of 139 towns and villages in South Lanarkshire we cover for external mastic. For nearby work, see our Glasgow page (9 miles or so).
Our applicators cover all of the G71 postcode area for external mastic. Whether your property is on Station Road, Main Street and Kirklands Crescent or anywhere close by, we can help. With the B7071 close by, Bothwell is simple for us to get to for external mastic. Close by, we work in Uddingston (1 mile north), Tannochside (2 miles north), Viewpark (2 miles north), Bellshill (2 miles east) and Birkenshaw (2 miles north). Within a short drive, we also cover East Kilbride (6 miles south-west), Hamilton (3 miles south), Cambuslang (3 miles west), Larkhall (6 miles south-east), Carluke (10 miles south-east) and Rutherglen (6 miles west).
Landmarks near Bothwell
We work in homes and buildings around Marion Gilchrist Memorial Garden and Camphill Public House. Bothwell’s nearest station is Blantyre station, about 0.9 miles south-west of the centre. Nearby you’ll also find Drumsagad Castle (2.4 miles west) and David Livingstone Centre (0.6 miles south-west). For a walk, there’s Strathclyde Loch and Baron's Haugh RSPB Reserve.
Places near Bothwell
Also in Bothwell
What we do, step by step
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes anything from a few hours to several days, depending on the building. In smaller Scottish places, parking is normally less of an issue than access and distance. 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.
- We take out the old sealant until the faces are sound.
- 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.
How to prepare
- Clear the area around the work
- Mention any leaks or damp you’ve noticed
- Mention if the joints have been sealed before
How to get a quote
For a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. You will have a clear quote before work begins.
Read more
Questions from Bothwell
Can you help a landlord with a rental near Blantyre station?
Yes, rental work is part of what we do. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before any work starts.
Can you do external mastic in Bothwell?
Yes. Our work covers the whole of Scotland, and Bothwell is part of that. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing, and we’ll send you a clear quote.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is normally a movement joint. It lets the bricks expand without cracking and needs a flexible seal, not mortar.
Should I point up the gap in my brickwork?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
Will the new joint stand out?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. Exterior sealants come in a good range of colours.
What should I tell you?
Tell us what needs doing and where, with photos by email if possible. If we need more, we will ask.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
Different surfaces, different methods
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.