Midlothian · Scotland
External & façade joints in Penicuik, Midlothian
External mastic across Penicuik and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Old sealant gone brittle and cracked
- Cracked joints where brick meets render or frames
- Rigid filler in a joint that should flex
Do you need external mastic in Penicuik?
Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.
Most people get in touch when they notice one of these:
- Cracked joints where brick meets render or frames
- Old sealant gone brittle and cracked
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
For site and facilities teams at buildings such as Beeslack Community High School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before booking anyone
- What preparation is included
- What the cure time is
- Whether they’re fully insured
- What guarantee comes with the work
About our external mastic in Penicuik
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. We work on façade panels, brickwork movement joints and concrete & block, and people most often call us about joints with sealant missing in places and rain getting behind render or cladding at a joint.
In a Scottish town like Penicuik, wind-driven rain finds any gap on the outside of a building. A gap in a gutter joint, fascia trim or wall joint soon lets damp in.
Our work is backed for twelve months, in Penicuik and everywhere else we cover.
- Where
- Penicuik (EH26)
- Region
- Midlothian
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Penicuik and across Midlothian. We can quote a run of properties together.
Landlords and agents in Penicuik can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Outside joints around Penicuik
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. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
In and around Penicuik, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Penicuik is about 8 miles south of Edinburgh, in Midlothian. Every kind of property in Penicuik is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. 33 places in Midlothian are on our list, from the larger towns to small villages. We also work in Edinburgh, about 8 miles from Penicuik.
All of EH26 is covered for external mastic, from the main roads to the quietest streets. You will find streets such as Windsor Square, High Street and The Square. Penicuik is on the A701 and A702, so it’s easy for us to get to. Neighbouring places we cover for external mastic include Milton Bridge (1 mile north-east), Howgate (2 miles south-east), Silverburn (2 miles west), Swanston (4 miles north) and Bonaly (5 miles north). Within a short drive, we also cover Bonnyrigg (5 miles north-east), Dalkeith (7 miles north-east), Loanhead (4 miles north-east), Gorebridge (7 miles east), Newtongrange (7 miles east) and Mayfield (8 miles east). Penicuik is one of the larger places we cover in Midlothian.
What’s near Penicuik
In Penicuik, that means homes and buildings near Craigiebield House Hotel. Other landmarks nearby include Rosslynlee Hospital (1.7 miles north-west) and Penicuik Paper Heritage Museum (0.7 miles south). Open spaces near Penicuik include Edgelaw Reservoir and Turnhouse Hill.
Why act early in Penicuik
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’s worth doing right. In Penicuik, wind and rain soon get through failed outside joints. Inside, a failed seal around a bath or shower lets water into floors and ceilings.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why us?
- We agree the colour with you first
- Quality sealants from Arbo and Everbuild
- Old sealant always removed completely
- Rated 4.9 stars on Google
Read how sealant jobs are priced and our reviews.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Also near Penicuik
What else we do in Penicuik
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Fix overflowing gutters above sealed joints
- Check external joints each spring
- Keep soil, plants and ivy away from the joints
- Check the sealant is paintable before painting near it
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible.
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind.
The process
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours for a handful of joints, longer for a whole elevation in most cases. A visit in Penicuik needs three things planned: access, parking and where the work is. Outside work depends on the weather, as sealant needs a dry surface.
- 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
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
- Tell us about any water getting in
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Advice
Penicuik questions
How do I get a quote for external mastic in Penicuik?
Just drop us a line at info@mrmastic.co.uk and let us know what needs doing and where. We’ll give you a clear quote, with a fixed price before work begins.
Is Penicuik in your area for external mastic?
Yes. We work across all of Scotland, and Penicuik is part of that. You can email us at info@mrmastic.co.uk and tell us what needs doing.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
How long does external mastic last?
There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Every job carries our 12-month guarantee.
Should I point up the gap in my brickwork?
No. Rigid materials can’t move with the wall. Where a joint has been mortared, it can often be raked out and sealed properly.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Do you work at height?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.