South Lanarkshire · Scotland
External & façade joints in Pettinain, South Lanarkshire
Problem with your movement joints in Pettinain? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Failed seals between different materials
- Rigid filler in a joint that should flex
- Panel joints letting water in
Pettinain: your questions answered
Do you cover Pettinain for external mastic?
Yes. We work across all of Scotland, and Pettinain is part of that. You can email us at info@mrmastic.co.uk and tell us what needs doing.
Do you work for landlords with property near Carstairs station?
Yes, rental work is part of what we do. You can email us at info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before we start.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Do you use backing rod?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
How much does external mastic cost in Pettinain?
It depends on the job, so we quote each one individually. To get one, drop us a line at info@mrmastic.co.uk with a short description of the job.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Can a movement joint be filled with mortar?
No. Rigid materials cannot move with the wall. If it has already been filled, we can generally cut it out and reseal it.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply email us at info@mrmastic.co.uk.
External mastic in Pettinain, done properly
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on render & cladding joints, concrete & block and brickwork movement joints, and the jobs we see most are brick movement joints where the sealant has split and sealant pulling away from one side of the joint.
External sealant needs dry surfaces, so outdoor work around Pettinain is planned around the weather. Let us know about access to every wall and roofline.
All our work is covered by our one-year guarantee, wherever you are in South Lanarkshire.
- Where
- Pettinain (ML11)
- Region
- South Lanarkshire
- Guarantee
- One year on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Walls and rooflines in Pettinain
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
If you let a flat or house near Carstairs station, split movement joints are easy to miss on a rental until damp shows inside.
Pettinain is about 8 miles south-east of Carluke, in South Lanarkshire. Jobs in Pettinain get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Pettinain is one of 139 places in South Lanarkshire we cover. For nearby work, see our Edinburgh page.
We cover every part of ML11 for external mastic. External mastic is available to properties on Raeburn Common and Cairngryffe Street. Other places close to Pettinain include Carstairs Junction (2 miles north), Covington (2 miles south-east), Carstairs (2 miles north-west), Libberton (2 miles east) and Carnwath (3 miles north-east). We also work in nearby towns such as Larkhall (13 miles north-west), Carluke (8 miles north-west), Lanark (4 miles west), Stonehouse (13 miles west), Lesmahagow (9 miles west) and Law (10 miles north-west).
Landmarks near Pettinain
The nearest railway station is Carstairs station, roughly 1.8 miles north of the centre. A little further out are Covington School Museum (2.3 miles south-east) and William Smellie Memorial Hospital (4.9 miles west). Open spaces near Pettinain include Lanark Loch.
What we are called out for in Pettinain
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
Most people get in touch after spotting one of these:
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
In the older streets around Pettinain Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Before booking anyone
- Whether they seal over old material or remove it
- Are they insured?
- How much experience the applicator has
- How the joint is cleaned and prepared
Should I try it myself first?
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 fails, we can still redo it.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Places near Pettinain
What else we do in Pettinain
How to look after the new joints
Aftercare is simple:
- Make sure movement joints are not pointed over
- Avoid pressure-washing directly into sealant joints
- Get split or bare joints resealed while the damage is small
- Check external joints each spring
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage.
When it is not the sealant
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Structural movement, which needs a surveyor or engineer
- Cracks in the bricks or render themselves, away from the joints
If you’re not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
What we seal
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
- Concrete & block
- Render & cladding joints
How we quote for external mastic
We quote each job individually. This is what makes a difference:
- How many areas need sealing
- When we can work, for business premises
- Access and height
- The number and length of the joints
Doing several joints on one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
What we need to know
To help us quote quickly, please include:
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Why deal with it now?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
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.
Why book with us
- Colour picked to suit the job
- Tidy, careful work
- White, clear, grey or coloured to suit, where the product allows
- Full insurance on every job
See how sealant jobs are priced and our reviews.
The process
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a few hours for a handful of joints, longer for a whole elevation. Outside jobs in Pettinain need a dry day, because sealant won’t bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know if you’ve seen damp or leaks
Get a quote
We quote each job on its own. Just email us at info@mrmastic.co.uk with the details, and photos are welcome.