Argyll and Bute · Scotland
External Mastic in Askomill
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Askomill and across Argyll and Bute. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant pulling away from one side of the joint
- Rain getting behind render or cladding at a joint
- Joints pointed up with cement by mistake
Looking after it afterwards
So the new joints stay in good condition:
- Check the sealant is paintable before painting near it
- Don’t let climbing plants root in the sealant
- Wash walls gently around the sealant
- Never let anyone fill a movement joint with mortar
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
External mastic for homes and businesses in Askomill
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what’s needed to reach them safely. We’re often asked to deal with water getting into walls through failed joints and gaps where render, brick and frames meet, on copings & trims, concrete & block and render & cladding joints.
In and around a place like Askomill, many buildings face open ground and take the full weather. Gutter joints and wall joints take a battering, so they need a sealant that moves with the building.
There’s a 12-month guarantee on every job.
- Location
- Askomill (PA28)
- Wider area
- Argyll and Bute
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Landlord and commercial work in Askomill
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Quotes for external mastic in Askomill
Jobs vary more than people expect. The main factors:
- The size of the job
- Which sealant suits the joint
- Whether the work is at height
- The number of rooms or windows
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Where the job is, and your postcode
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
Need a quote? Please email us at info@mrmastic.co.uk with a few details. You will know what we plan to do, and what it will cost, before any work begins.
How the visit works
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and tidy away. It generally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Askomill 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.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
Ask for a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we will take it from there.
Related advice
What the job involves on each surface
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so its sealant has to stay flexible.
When to call us in Askomill
Using the wrong sealant is another common reason. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, and it tears off the sides.
Keep an eye out for any of the following:
- Rigid filler in a joint that should flex
- Plants rooting in failed movement joints
- Failed seals between different materials
- Failed sealant between panels on a façade
Around Askomill, as everywhere, external mastic is only as good as the preparation behind it.
What to look for in a quote
- Who turns up on the day
- Is VAT in the price?
- Whether all the old sealant comes out first
- How long the guarantee is
Nearby places to Askomill
Other services in Askomill
Outside joints around Askomill
Askomill is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Askomill is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for movement joints and outside wall joints to keep out.
Historic houses such as Tirfergus House, about 4.1 miles south-west, show how far back building around Askomill goes.
Askomill is in Argyll and Bute. If you need external mastic in Askomill, it’s easy to get a quote: please email us at info@mrmastic.co.uk. We’re based in Crawley and cover Argyll and Bute. Our Argyll and Bute coverage runs to 118 places, Askomill among them. Glasgow is on our list too, around 59 miles away.
We work across the PA28 postcode area for external mastic. Whether your property is on High Street, Lochruan Road and John Street or a nearby road, our applicators can take on the job. We also cover the places around Askomill: Campbeltown (1 mile south-west), Kilkerran (1 mile south), Drumlemble (4 miles west), West Darlochan (4 miles north-west) and Southend (8 miles south). Island and remote addresses take a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Landmarks near Askomill
We work in homes and buildings around 2 Bolgam Street pub and Campbeltown Library and Museum and the streets around them. Other landmarks nearby include Campbeltown Hospital (0.6 miles south-west) and Campbeltown Library and Museum (0.5 miles south-west). Green spaces nearby include Beinn Ghuilean and Black Loch.
Your questions about external mastic in Askomill
Is Askomill within the area you cover?
Yes, Askomill is covered. We work across all of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Does the coastal weather in Askomill affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Can a movement joint be filled with mortar?
No, not where the gap is a movement joint. Pointing it stops it working. A flexible sealant is the right fill.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin from the range available.
How do I get a quote for external mastic in Askomill?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Do you guarantee your work?
Yes. Every job comes with a 12-month guarantee.