Midlothian · Scotland
External & façade joints in Millerhill, Midlothian
External mastic for Millerhill, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints around cladding and façade panels
- Old sealant gone brittle and cracked
- Rigid filler in a joint that should flex
Honest limits
To be straight with you, some problems need a different trade:
- Adding movement joints to masonry that has none
- Cracked brickwork or render that needs a builder or plasterer
- Rising or penetrating damp from elsewhere in the wall
If you’re not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Concrete & block
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
- Façade panels
- Render & cladding joints
External mastic in Millerhill, done properly
For buildings in Millerhill, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean joint faces and the right depth. If you’re dealing with moss and dirt in joints with no sealant left and weathered mastic that no longer stretches, we can put it right.
Outside joints can only be sealed when they’re dry, so work in Millerhill depends on the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
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.
- Place
- Millerhill (EH22)
- Region
- Midlothian
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Different surfaces, different methods
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. We reseal them with a sealant suited to the panel material.
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Aftercare tips
Looking after new joints is easy:
- Do not let climbing plants root in the sealant
- Get split or bare joints resealed while the damage is small
- Keep high-pressure jets off the joints
- Keep movement joints as flexible joints, not mortar
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.
Nearby places to Millerhill
Also in Millerhill
What we do, step by step
On the day, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work begins. The work usually takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Millerhill may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, drop us a line at info@mrmastic.co.uk.
Related advice
Common questions in Millerhill
Can you help a landlord with a rental near Shawfair station?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Does the coastal weather in Millerhill affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Are you insured?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
Is it OK to fill a movement joint with cement?
No. A mortar-filled joint can’t move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
Why it’s worth doing now in Millerhill
A properly done movement joint is an even line in a colour 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 an older home around Millerhill, damp from a failed joint can get into timber and plaster.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why book with us
- A 12-month guarantee on all work
- An ARBOMaster approved applicator
- Over 20 years’ experience
- Colour picked to suit the job
Landlord and commercial work in Millerhill
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
External mastic in Millerhill: local notes
Millerhill is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Historic houses like Melville Castle (about 1.7 miles south-west) are a reminder that the area around Millerhill has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For an older house near a landmark such as Newton Church, an extension built onto an older house moves differently, and the joint between them takes the strain. For landlords with property near Shawfair station, split movement joints are easy to miss on a rental until damp shows inside. For site and facilities teams at buildings such as Dalkeith High School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Millerhill is about 2 miles north-west of Dalkeith, in Midlothian. Wherever you are in the EH22 postcode area, our applicators can take on external mastic. Across Midlothian, we cover 33 places, Millerhill among them.
Every address in EH22 is covered for external mastic. Streets in the area include Wymet Grove, Wymet Gardens and Cocklerow Loan, all of which we cover. We also cover the places around Millerhill: Newton Village (1 mile west), Shawfair (1 mile north-west), Old Craighall (1 mile north-east), Newcraighall (2 miles north) and Whitecraig (2 miles east). Further out, we also cover Bonnyrigg (3 miles south), Penicuik (8 miles south-west), Loanhead (4 miles south-west), Gorebridge (5 miles south), Newtongrange (3 miles south) and Mayfield (3 miles south-east).
Local landmarks in Millerhill
We work in homes and buildings around Drum Park. Millerhill has its own railway station: Shawfair station. Well-known places in the area include Musselburgh Doll Museum (2.3 miles north-east) and Dalkeith Palace (1.1 miles south-east). For a walk, there’s The New Leaf Co-op and Nether Hill.