Perth and Kinross · Scotland
External & façade joints in Netherton, Perth and Kinross
Sealing brickwork movement joints, render, cladding and façade joints for Netherton, backed by a one-year guarantee. Ask us for a quote.
- Old sealant gone brittle and cracked
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
About our external mastic in Netherton
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. We work on joints between brick and frames, render & cladding joints and concrete & block, and the jobs we see most are movement joints filled with mortar instead of sealant and hard, crazed mastic that has stopped moving.
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.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Where
- Netherton (PH10)
- Wider area
- Perth and Kinross
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Subsidence or other structural problems
- Cracked brickwork or render that needs a builder or plasterer
- Adding movement joints to masonry that has none
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before booking.
Surfaces we seal
- Concrete & block
- Façade panels
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Brickwork movement joints
Towns and villages near Netherton
Other services in Netherton
What external mastic looks like in Netherton
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. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
If you live in an older home near Netherton Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Netherton is about 5 miles north-west of Blairgowrie and Rattray, in Perth and Kinross. Netherton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Perth and Kinross, we cover 107 places, Netherton among them. You can also see our page for Dundee, roughly 20 miles from Netherton.
Every address in PH10 is covered for external mastic, from the main roads to the quietest streets. Nearby, we also carry out external mastic in Bridge of Cally (1 mile south), Kinloch (5 miles south), Blairgowrie and Rattray (5 miles south-east), Rattray (5 miles south-east) and Carsie (6 miles south). Further out, we also cover Pitlochry (13 miles west), Alyth (7 miles east), Coupar Angus (9 miles south-east), Stanley (12 miles south), Luncarty (14 miles south) and Newtyle (12 miles south-east).
Around Netherton
A little further out are Blairgowrie Community Hospital (5 miles south-east) and Blackcraig Castle (2.3 miles west). The countryside around Netherton includes Loch Charles.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Aftercare tips
So the new joints stay in good condition:
- Don’t let climbing plants root in the sealant
- Fix overflowing gutters above sealed joints
- Avoid pressure-washing directly into sealant joints
- Ask before painting over external sealant
Only paint over the joint if we’ve confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted and spoil the finish.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal before water has had years to get in.
How we quote for external mastic
Your quote is based on your job. We take into account:
- How many rooms, windows or areas are involved
- Any mould that needs treating
- Which sealant suits the joint
- Working hours on commercial sites
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- The problem you’ve noticed
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
- A few pictures by email, if you can
For a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. We will send you a clear quote before any work starts.
Common questions in Netherton
Is external mastic in Netherton guaranteed?
All our work, in Netherton and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is Netherton within the area you cover?
Yes. Netherton is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you when we finish.
How much does external mastic cost in Netherton?
Size, access and the old material all affect the cost. Call for a quick quote.
Do you work for landlords and businesses?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Why do you put foam in the joint first?
Backing rod controls the sealant depth and keeps it off the back of the joint. That way it bonds to the two sides only and can stretch.
Common problems we fix in Netherton
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
It’s worth asking for a quote if you see:
- Movement joints with cracked, split or missing sealant
- Old sealant gone brittle and cracked
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
In and around Netherton, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Before booking anyone
- What guarantee comes with the work
- Whether they seal over old material or remove it
- Who does the work, and how experienced they are
- Whether they’re fully insured
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to several days, depending on the building. Somewhere like Netherton may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Mention any sign-in or site rules at work premises
- Clear the area around the work
- Let us know about stairs, lifts or work at height
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Advice
How the job changes by surface
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so the movement is taken up.