Perth and Kinross · Scotland
External & façade joints in Gilmerton, Perth and Kinross
Specialist external mastic for Gilmerton: careful preparation, the right product and tidy work. Call for a quick quote.
- Brick movement joints where the sealant has split
- Hard, crazed mastic that has stopped moving
- Weeds or debris growing in open joints
Gilmerton questions
Is there a guarantee on external mastic in Gilmerton?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Is Gilmerton in your area for external mastic?
Yes. Our work covers the whole of Scotland, and Gilmerton is part of that. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we will send you a clear quote.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides with primer where required.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
About our external mastic in Gilmerton
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. If you are dealing with water getting into walls through failed joints and brick movement joints where the sealant has split, we can help.
In and around a place like Gilmerton, many buildings face open ground and take the full weather. Outside joints on exposed walls work hard.
Whatever the size of the job, you get the same one-year guarantee.
- Place
- Gilmerton (PH7)
- Wider area
- Perth and Kinross
- Cover
- One year on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Nearby places to Gilmerton
More services for Gilmerton
Why deal with it now?
Sealing over the top of old mastic doesn’t hold for long. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. Around Gilmerton, 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.
The cost reflects the work involved, not guesswork. That is why we ask about the job first.
Why Gilmerton clients choose us
- Anti-fungal sanitary silicone in wet areas
- Quality sealants from Arbo and Everbuild
- Tidy, careful work
- 4.9 on Google from 180+ five-star reviews
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Tell anyone working on the walls about the movement joints
- Fix overflowing gutters above sealed joints
- Keep high-pressure jets off the joints
- Have failed joints looked at early
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
External mastic in Gilmerton: local notes
Plenty of Scottish homes have harled walls, 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 sound outside sealant is part of that.
In and around Gilmerton, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Gilmerton is about 14 miles west of Perth, in Perth and Kinross. Jobs in Gilmerton get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 107 towns and villages across Perth and Kinross, from the larger towns to small villages. Dundee is on our list too, around 32 miles away.
We work across the PH7 postcode area for external mastic. If you need external mastic at a property on Grahame Terrace and Perth Road or anywhere close by, we can help. Close by, we work in Crieff (2 miles south-west), St David's (4 miles south-east), Muthill (4 miles south), Madderty (4 miles south-east) and Tullibardine (6 miles south). Further out, we also cover Perth (14 miles east), Auchterarder (8 miles south-east), Letham (13 miles east), Tulloch (13 miles east), Oakbank (13 miles east) and Hillyland (12 miles east).
Local landmarks in Gilmerton
Other landmarks nearby include Crieff and Strathearn Museum (1.9 miles south-west) and Castle Cluggy (2.9 miles west). The countryside around Gilmerton includes Loch Monzievaird.
Quotes for external mastic in Gilmerton
Your quote is based on your job. We look at:
- The size of the job
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
What we need to know
When you contact us, these details help:
- Pictures of the joints, sent by email
- The rough size of the job
- Where the property is
- Any access issues, like height or stairs
To get a quote, email us at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
What happens on the day
You don’t need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the building in most cases. In smaller Scottish places, parking is usually less of an issue than access and distance. Tell us how to find the property and how to reach the work.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Let us know about parking restrictions
- Tell us about any water getting in
Ask for a quote
Want a quote for external mastic? Please email us at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Do you need external mastic in Gilmerton?
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Most people get in touch after spotting something like this:
- Gaps where render, brick and frames meet
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
If you live in an older home near Gilmerton Church House, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What your quote should include
- How the colour is chosen
- Which sealant they’ll use, and why
- How much experience the applicator has
- Whether VAT is included
Surface by surface
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it. Tell us what the building has when you get in touch.