East Lothian · Scotland
External Mastic in Bolton
Sealing brickwork movement joints, render, cladding and façade joints for Bolton, backed by a 12-month guarantee. Call for a quick quote.
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
- Cracked joints where brick meets render or frames
Looking after it afterwards
Aftercare is simple:
- Act on the first splits you see
- Wash walls gently around the sealant
- Fix overflowing gutters above sealed joints
- Keep soil, plants and ivy away from the joints
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
About our external mastic in Bolton
We are 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 don’t skip that step. If you are dealing with hard, crazed mastic that has stopped moving and plants rooting in failed movement joints, we can help.
External sealant needs dry surfaces, so outdoor work around Bolton is planned around the weather. Tell us how to reach each wall, gutter and roofline.
Every job is covered by our 12-month guarantee, wherever you are in East Lothian.
- Place
- Bolton (EH41)
- Region
- East Lothian
- Guarantee
- One year on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Walls that need new movement joints cut into them
- Damp that is not coming from the joint
- Cracking across the wall rather than at a joint
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think before you book.
Where we work in Bolton
- Brickwork movement joints
- Façade panels
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
How the job changes by surface
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. We prime where the sealant needs it before the bead.
Cladding and façade panels
If the façade has a specified sealant, that is what we use, or one the system allows. Send us any details you have about the façade.
What we are called out for in Bolton
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
The most common problems we see are:
- Movement joints with cracked, split or missing sealant
- Joints where the bead has come unstuck
- Damp patches traced to an open external joint
- Movement joints filled with mortar instead of sealant
For site and facilities teams at buildings such as Knox Academy, larger buildings have long runs of movement joint that eventually need resealing.
Before booking anyone
- Which sealant they’ll use, and why
- What preparation is included
- Whether they’re fully insured
- What happens if they find a problem under the old sealant
Places near Bolton
Other services in Bolton
What happens on the day
There is not much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Bolton may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Keep pets and children clear of the area while we work
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
Ask for a quote
For a quote, email us at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Related advice
How we quote for external mastic
We do not publish a price list, because no two jobs are the same. What we look at:
- Whether there’s mould to deal with
- How easy the joints are to reach
- When we can work, for business premises
- The number and length of the joints
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Where the job is, and your postcode
- What’s wrong with the joints now
- Whether it has been sealed before
- Whether it’s a home or a business
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Bolton buildings and the weather
Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex. 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 Bolton Parish Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Bolton is about 2 miles south of Haddington, in East Lothian. For external mastic in and around Bolton, it’s easy to get a quote: please email us at info@mrmastic.co.uk. We’re based in Crawley and cover East Lothian. We cover 48 towns and villages across East Lothian, large and small. There’s also a page for Edinburgh, roughly 16 miles from Bolton.
Jobs for external mastic in EH41 works the same way as everywhere else we cover. Nearby, we also carry out external mastic in Dovecote (2 miles north), Gifford (2 miles south-east), East Saltoun (2 miles south-west), Haddington (2 miles north) and Gladsmuir (3 miles north-west). Within a short drive, we also cover Musselburgh (10 miles west), Dunbar (12 miles north-east), Tranent (6 miles west), North Berwick (10 miles north), Prestonpans (8 miles west) and Cockenzie and Port Seton (7 miles north-west).
What’s near Bolton
A little further out are Roodlands General Hospital (2.5 miles north) and East Saltoun Old Castle (2.4 miles south-west). Green spaces nearby include Skid Hill.
Bolton: your questions answered
Will you come out to Bolton?
Yes, Bolton is covered. Our work covers the whole of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What guarantee comes with external mastic in Bolton?
All our work, in Bolton and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
How long should I leave it?
Cure times vary by product. Before we leave, we will tell you the cure time.
Can I do it myself?
You can, for simple jobs. 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.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render so the joint does not draw the eye.
How do you reach high-level joints?
That depends on the building and the joints. Where joints can be reached safely, we will do them. Tell us about the building and we will confirm what access is needed.
Can a movement joint be filled with mortar?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. A flexible sealant is the right fill.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.