Midlothian · Scotland
External & façade joints in Lasswade, Midlothian
External mastic across Lasswade and nearby, with old sealant always removed completely and a one-year guarantee.
- Panel joints letting water in
- Cracked joints where brick meets render or frames
- Movement joints filled with mortar instead of sealant
How we quote for external mastic
Call for a quick quote. The main things that affect it are:
- When we can work, for business premises
- How many areas need sealing
- The amount of work
- Any mould that needs treating
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please drop us a line at info@mrmastic.co.uk.
What to tell us for a quote
When you contact us, these details help:
- Roughly how big the job is
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you’re ready, send an email to info@mrmastic.co.uk.
External mastic for homes and businesses in Lasswade
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where mortar or filler would crack. If you are dealing with movement joints filled with mortar instead of sealant and plants rooting in failed movement joints, we can help, on brickwork movement joints, render & cladding joints and concrete & block alike.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. On newer homes, the movement joints and roofline trims are what need watching.
Each job carries a 12-month guarantee.
- Place
- Lasswade (EH19, EH18)
- Wider area
- Midlothian
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Do you need external mastic in Lasswade?
Some movement joints have been pointed up with mortar. The joint cannot move, so the wall cracks somewhere else instead.
Signs it’s time to call us include:
- Rain getting behind render or cladding at a joint
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
- Old sealant gone brittle and cracked
For landlords with property near Eskbank station, split movement joints are easy to miss on a rental until damp shows inside.
Before booking anyone
- What preparation is included
- Are they insured?
- Whether the sealant suits the joint
- What guarantee comes with the work
Different surfaces, different methods
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
Why deal with it now?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Around Lasswade, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. We will give you a clear quote for the lot.
What you get with us
- Over 20 years’ experience
- We never seal over old sealant
- Experience in homes, commercial sites and hotels
- Tidy, careful work
Towns and villages near Lasswade
More services for Lasswade
Outside joints around Lasswade
Historic houses like Melville Castle (about 0.7 miles north-east) are a reminder that the area around Lasswade has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Melville Castle, about 0.7 miles north-east, is one of the historic houses in the wider area around Lasswade. If you look after a building such as Lasswade High School Centre, its movement joints, gutters and trims need looking after like any other building’s.
Lasswade is about 1 mile north-west of Bonnyrigg, in Midlothian. Our applicators cover external mastic for householders, landlords and businesses in Lasswade, as part of our work across Midlothian. Lasswade is one of 33 places in Midlothian where we work.
Here we cover the EH19 and EH18 postcode area for external mastic. Whether your property is on Green Lane, Church Road and Polton Road or anywhere close by, our applicators can take on the job. Being close to the A768, Lasswade is easy for our applicators to reach. Other places close to Lasswade include Bonnyrigg (1 mile south-east), Polton (1 mile south-west), Loanhead (2 miles west), Burdiehouse (2 miles north-west) and Rosewell (2 miles south). Larger places within reach include Penicuik (5 miles south-west), Gorebridge (4 miles south-east), Mayfield (3 miles east), Shawfair (3 miles north), Roslin (3 miles south-west) and Easthouses (3 miles east).
What’s near Lasswade
We work in homes and buildings around Public Library and Drum Park. The closest station to Lasswade is Eskbank station, about 1.3 miles east. A little further out are Cameron Toll Shopping Centre (3.5 miles north-west) and Midlothian Community Hospital (1.1 miles east). Not far away are Blackford Hill and Duddingston Loch.
How the visit works
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the building. Outside jobs in Lasswade need a dry day, because sealant won’t bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
- Clear items away from the joints we’re working on
Get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved.
Related advice
Aftercare tips
Good habits help new joints last longer. Our tips:
- Don’t let climbing plants root in the sealant
- Have failed joints looked at early
- Leave the joints unpainted unless we have said otherwise
- Keep water from gutters off the wall
Do not paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
FAQs for Lasswade
Do you cover Lasswade for external mastic?
Yes. We work across all of Scotland, and Lasswade is part of that. You can send an email to info@mrmastic.co.uk and let us know what needs doing.
Do you work for landlords with property near Eskbank station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear price.
Do I have to be there?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How do you reach high-level joints?
It depends on the building. Send us photos and a rough idea of the height and we’ll confirm how they can be reached safely.
Can you seal over the old sealant?
No, it won’t last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Do you take out the old sealant first?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Is it messy?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
DIY versus a professional finish
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.
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, and the work is guaranteed for a year.