Midlothian · Scotland
External Mastic in Dalkeith
Sealing brickwork movement joints, render, cladding and façade joints in Dalkeith, with a one-year guarantee on every job. Ask us for a quote.
- Rigid filler in a joint that should flex
- Leaking joints around cladding and façade panels
- Rain getting behind render or cladding at a joint
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Dalkeith and across Midlothian. We can quote a run of properties together, and we are fully insured for the work.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
About our external mastic in Dalkeith
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 joints between brick and frames, and common reasons people get in touch are gaps where render, brick and frames meet and rain getting behind render or cladding at a joint.
Scottish towns like Dalkeith mix older stone buildings with newer estates of brick, render and uPVC trims. Each has its own weak points: worn joints in old gutters, and dried-out movement joints in newer walls.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Dalkeith (EH22)
- Wider area
- Midlothian
- Cover
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What we do, step by step
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take a few hours for a handful of joints, longer for a whole elevation. For a job in Dalkeith, tell us where the work is, how to get in and where to park. Outdoor jobs need a dry day, so they can move if the weather turns.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Where the joints are inside, avoid wetting them before we arrive
- Mention any parking rules near the property
Ask for a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Advice
DIY sealant or a professional job?
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, then guaranteed for a year.
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.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Never let anyone fill a movement joint with mortar
- Check the sealant is paintable before painting near it
- Check external joints each spring
- Fix overflowing gutters above sealed joints
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Small splits are the time to act. At that stage it’s a simple cut out and reseal before water has had years to get in.
When to call us in Dalkeith
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and speed up the damage.
Keep an eye out for any of the following:
- Hard, crazed mastic that has stopped moving
- Gaps where render, brick and frames meet
- Movement joints filled with mortar instead of sealant
- Sealant that has lost its bond to the brick or render
Schools such as Dalkeith High School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
What your quote should include
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
- How much experience the applicator has
- What the cure time is
Nearby places to Dalkeith
What else we do in Dalkeith
Surface by surface
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
Why it’s worth doing now in Dalkeith
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost near the open joint, so the problem grows beyond the joint itself. In flats with a shared stair in Dalkeith, a leak from a failed seal can affect the flat below too, which turns a small job into a bigger one.
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
What you get with us
- Trusted Arbo and Everbuild sealants
- We never seal over old sealant
- Anti-fungal silicone where joints get wet
- 4.9 on Google from 180+ five-star reviews
See what affects the cost or our reviews.
What external mastic looks like in Dalkeith
With historic houses such as Melville Castle (about 1.6 miles west) nearby, there’s older building stock in the area around Dalkeith as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
If you live in an older home near East Kirk, an extension built onto an older house moves differently, and the joint between them takes the strain. If you let a flat or house near Eskbank station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Dalkeith is about 7 miles south-east of Edinburgh, in Midlothian. Across the EH22 area, we cover external mastic for homes and businesses. We cover 33 towns and villages across Midlothian, from the larger towns to small villages. Our Edinburgh page covers work nearby.
All of EH22 is covered for external mastic, from the main roads to the quietest streets. You’ll find streets such as High Street, Thornybank Square and Station Road. You’ll find Dalkeith on the A7 and A768, so it’s easy for us to get to. We also cover the places around Dalkeith: Newbattle (1 mile south-west), Easthouses (1 mile south-east), Newtongrange (2 miles south), Mayfield (2 miles south-east) and D'Arcy (2 miles south-east). We also work in nearby towns such as Penicuik (7 miles south-west), Loanhead (4 miles west), Gorebridge (3 miles south), Rosewell (4 miles south-west), Roslin (5 miles south-west) and Bilston (5 miles west). As one of the bigger places in Midlothian, Dalkeith has homes, rented property and businesses of every kind.
Around Dalkeith
In Dalkeith, that means homes and buildings near Public Library and Gothenburg Public House, among other places. Dalkeith’s nearest station is Eskbank station, roughly 1.1 miles south-west. Other landmarks nearby include Dalkeith Palace (0.6 miles north) and Cousland Smiddy (2.8 miles east). For a walk, there’s Duddingston Loch and The New Leaf Co-op.
Common questions in Dalkeith
Is Dalkeith in your area for external mastic?
Yes. We work across all of Scotland, and Dalkeith is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
I let a flat near Eskbank station. Can you help?
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 will give you a fixed price before we start.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Are you fully insured?
Yes. Full insurance covers our work.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit.
Is the work guaranteed?
Yes: twelve months. If anything is not right with the work within the year, let us know and we will sort it.