Aberdeenshire · Scotland
External Mastic in St Fergus
Specialist external mastic for St Fergus: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Failed seals between different materials
- Movement joints filled with mortar instead of sealant
- Moss and dirt in joints with no sealant left
How we handle external mastic in St Fergus
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We take the old material out and do it properly. Typical jobs include rain getting behind render or cladding at a joint and movement joints filled with mortar instead of sealant, across concrete & block, brickwork movement joints and façade panels.
Outside joints can only be sealed when they’re dry, so work in St Fergus depends on the weather. Let us know about access to every wall and roofline.
All our work comes with a one-year guarantee.
- Where
- St Fergus (AB42)
- Wider area
- Aberdeenshire
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Nearby places to St Fergus
What else we do in St Fergus
How the visit works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours to a few days, depending on the length of joint and the access, and the area is left clean. Around St Fergus, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
How to get a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.
Advice
Signs you need external mastic in St Fergus
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.
People normally contact us after spotting something like this:
- Rain getting behind render or cladding at a joint
- Failed sealant between panels on a façade
- Rigid filler in a joint that should flex
- Plants rooting in failed movement joints
In the older streets around St Fergus Parish Church and Churchyard, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- What guarantee comes with the work
- Who turns up on the day
- Whether VAT is included
- When the joint can take water or movement
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
External mastic in St Fergus: local notes
St Fergus is within about 2 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. 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 St Fergus, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
St Fergus is about 4 miles north-west of Peterhead, in Aberdeenshire. Across the AB42 area, we can carry out external mastic at your property. 161 places in Aberdeenshire are on our list. There’s also a page for Aberdeen, roughly 30 miles from St Fergus.
Here we cover the AB42 postcode area for external mastic. Streets in the area include Alwyn Wynd, Newton Road and Newton Grove. If you are just outside St Fergus, we cover Kirktown (1 mile west), Rora (2 miles south-west), Keyhead (3 miles north-west), Inverugie (3 miles south) and Downiehills (3 miles south). We also work in nearby towns such as Peterhead (4 miles south-east), Fraserburgh (11 miles north-west), Roanheads (4 miles south-east), Clerkhill (4 miles south), Port Henry (4 miles south-east) and Mintlaw (6 miles west).
Around St Fergus
A little further out are Inverugie Castle (2.4 miles south) and Ugie Hospital (3.5 miles south-east). For a walk, there’s Loch of Strathbeg and Meet Hill.
Your questions about external mastic in St Fergus
Does living near the coast affect external mastic in St Fergus?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Is St Fergus within the area you cover?
Yes, we do. We work across all of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
Are you fully insured?
Yes. We are fully insured for every job we do.
Why is there a gap in my brick wall?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces.
Where are you based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
What we can’t put right
It helps to know what we cannot do:
- Rising or penetrating damp from elsewhere in the wall
- Failed render or damaged cladding panels
- Cracking across the wall rather than at a joint
If you are not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer before booking.
Surfaces we seal
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Façade panels
How we quote for external mastic
For a quick quote, just ask. The main things that affect it are:
- The number and length of the joints
- The product the joint needs
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- Pictures of the joints, sent by email
- The type of property
- The rough size of the job
- If someone has resealed it before
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Surface by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.