Midlothian · Scotland
External & façade joints in Mayfield, Midlothian
External mastic in Mayfield from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked joints where brick meets render or frames
- Joints pointed up with cement by mistake
- Joints with sealant missing in places
When to call us in Mayfield
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
People generally contact us when they notice something like this:
- Movement joints with cracked, split or missing sealant
- Old sealant gone brittle and cracked
- Movement joints filled with mortar instead of sealant
- Gaps where render, brick and frames meet
Historic houses such as Melville Castle, about 2.9 miles north-west, show how far back building around Mayfield goes, and older homes nearby need a sealant that suits their walls.
What your quote should include
- Who does the work, and how experienced they are
- Whether you can choose the colour
- What the quote includes, VAT included or not
- How the joint is cleaned and prepared
How we handle external mastic in Mayfield
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where mortar or filler would crack. If you are dealing with movement joints with cracked, split or missing sealant and old sealant gone brittle and cracked, we can put it right.
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.
Your job is guaranteed for a year, as with all our work.
- Location
- Mayfield (EH22)
- Wider area
- Midlothian
- Cover
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Why it’s worth doing now in Mayfield
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In a place like Mayfield, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
Why us?
- We leave the area clean and tidy
- Every job guaranteed for a year
- Colour agreed with you before we start
- More than 20 years in sealant work
How we quote for external mastic
The quote reflects the job in front of us. We look at:
- The old material and how stubborn it is
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- Working hours on commercial sites
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Where the job is, and your postcode
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- The rough size of the job
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To get started, send an email to info@mrmastic.co.uk.
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
FAQs for Mayfield
Can you do external mastic in Mayfield?
Yes. We work across all of Scotland, and Mayfield is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear price.
I let a flat near Newtongrange station. Can you help?
Yes, we work for letting agents and landlords. 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 we start.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back.
Is it OK to fill a movement joint with cement?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
What should I tell you?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply send an email to info@mrmastic.co.uk.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Have failed joints looked at early
- Wash walls gently around the sealant
- Walk round the building once a year and look at the joints
- Never let anyone fill a movement joint with mortar
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
When something else is needed
It helps to know what we can’t do:
- Cracked brickwork or render that needs a builder or plasterer
- Loose or hollow render, which needs re-rendering
- Damp that is not coming from the joint
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think.
Joints and surfaces we work on
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Concrete & block
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes anything from a few hours to several days, depending on the building. Around Mayfield, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- 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.
Getting ready for the visit
- Clear the area around the work
- Keep children and pets away from the work area
- For business premises, tell us about site rules or sign-in
How to get a quote
Every job is quoted individually, so start by telling us what you need. Just email us at info@mrmastic.co.uk with the details and send pictures if you have them.
Read more
Also near Mayfield
Also in Mayfield
Mayfield buildings and the weather
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Harled (roughcast) walls are common in Scotland, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
For landlords with property near Newtongrange station, split movement joints are easy to miss on a rental until damp shows inside. For site and facilities teams at buildings such as Newbattle Community High School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Mayfield is about 2 miles south-east of Dalkeith, in Midlothian. For external mastic in and around Mayfield, please drop us a line at info@mrmastic.co.uk for a quick quote. We are based in Crawley and cover Midlothian. Our area takes in 33 places across Midlothian, large and small. We also work in Edinburgh, about 8 miles from Mayfield.
We cover every part of the EH22 postcode area for external mastic. Local streets include Chester Square, Pinewood View and Pinewood Road. Close by, we work in D'Arcy (1 mile east), Easthouses (1 mile north-west), Newtongrange (1 mile west), Gowkshill (1 mile south-west) and Edgehead (1 mile east). Further out, we also cover Bonnyrigg (3 miles west), Penicuik (8 miles west), Loanhead (5 miles west), Shawfair (4 miles north-west), Danderhall (4 miles north-west) and Rosewell (4 miles west). Mayfield is among the bigger towns we cover in Midlothian.
Around Mayfield
Mayfield’s nearest station is Newtongrange station, about 1.3 miles west of the centre. Well-known places in the area include Cousland Smiddy (2.9 miles north-east) and Dalhousie Castle (1.9 miles west).