Aberdeenshire · Scotland
Keyhead External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Keyhead and across Aberdeenshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Hard, crazed mastic that has stopped moving
- Rigid filler in a joint that should flex
- Leaking joints around cladding and façade panels
External mastic in Keyhead, done properly
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what access is needed. If you have gaps where render, brick and frames meet and brick movement joints where the sealant has split, we can help.
In and around a place like Keyhead, 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.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Keyhead (AB42)
- Region
- Aberdeenshire
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Honest limits
It helps to know what we can’t do:
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracks in the bricks or render themselves, away from the joints
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly before you book.
What we seal
- Joints between brick and frames
- Concrete & block
- Façade panels
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
What external mastic looks like in Keyhead
Keyhead is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
In and around Keyhead, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. For jobs in and around Keyhead, choosing the right material for each joint is as important as a tidy finish.
Keyhead is about 7 miles north-west of Peterhead, in Aberdeenshire. We provide external mastic to homes and businesses in Keyhead and nearby, as part of our work across Aberdeenshire. Keyhead is one of 161 towns and villages in Aberdeenshire where we work. Our Aberdeen page covers work nearby, about 31 miles away.
We cover every part of the AB42 postcode area for external mastic and the streets around it. We also cover the places around Keyhead: Kirktown (3 miles south-east), St Fergus (3 miles south-east), Rora (3 miles south), Inverugie (6 miles south) and Downiehills (6 miles south). Within a short drive, we also cover Peterhead (7 miles south-east), Fraserburgh (8 miles north-west), Roanheads (7 miles south-east), Clerkhill (7 miles south-east), Port Henry (7 miles south-east) and Mintlaw (7 miles south-west).
Near you in Keyhead
Other landmarks nearby include Castle of Rattray (1.7 miles north-east). Not far away are Loch of Strathbeg.
Places near Keyhead
What else we do in Keyhead
What happens if it’s left?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In an older home around Keyhead, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why Keyhead clients choose us
- 20+ years of sealant experience
- Tidy, careful work
- Old sealant always removed completely
- You choose the colour before work begins
Read what affects the cost or our reviews.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Never let anyone fill a movement joint with mortar
- Point out the joints to other trades
- Deal with leaking gutters that soak the joints below
- Walk round the building once a year and look at the joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead over time.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
How the job changes by surface
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Cladding and façade panels
Cladding and façade panels are normally separated by sealed joints. We reseal them with a sealant suited to the panel material.
What affects the cost of external mastic
We don’t publish a price list. What we look at:
- The amount of work
- The product the joint needs
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Asking for a quote
When you call or email, it’s useful to know:
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- Photos by email, if that’s easy
- Any previous sealing or DIY work
Every job is quoted individually, so the first step is telling us about yours. Simply send an email to info@mrmastic.co.uk and describe the job.
Common questions in Keyhead
Can you do external mastic in Keyhead?
Yes, Keyhead is within the area we cover. We work across all of Scotland. You can send an email to info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear quote.
Will you come out to Keyhead?
Yes, Keyhead is covered. Our work covers the whole of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
What is a movement joint?
A vertical gap in a long brick wall is usually a movement joint. It lets the bricks expand without cracking, and it should be sealed with a flexible sealant.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you when we finish.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Landlord and commercial work in Keyhead
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
For anyone letting property in or around Keyhead, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
The process
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a few hours for a handful of joints, longer for a whole elevation, and we explain the cure time before we leave. Outdoor work around Keyhead depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
- Tell us about any previous sealing or DIY attempts
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, drop us a line at info@mrmastic.co.uk.