Dumfries and Galloway · Scotland
External & façade joints in Howes, Dumfries and Galloway
Movement joints in Howes need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Rain getting behind render or cladding at a joint
- Panel joints letting water in
- Rigid filler in a joint that should flex
Keeping the joints in good condition
Looking after new joints is easy:
- Walk round the building once a year and look at the joints
- Avoid pressure-washing directly into sealant joints
- Clear growth from the base of walls and joints
- Keep movement joints as flexible joints, not mortar
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
External mastic for homes and businesses in Howes
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. We work on concrete & block, façade panels and copings & trims, and the jobs we see most are plants rooting in failed movement joints and joints where the bead has come unstuck.
Outside joints can only be sealed when they’re dry, so work in Howes depends on the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Howes (DG12)
- Wider area
- Dumfries and Galloway
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- Render that is blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Subsidence or other structural problems
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly.
Where we work in Howes
- Copings & trims
- Render & cladding joints
- Concrete & block
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
How it works
We keep the work tidy and contained to the area we’re working on, so you can carry on as normal. The job normally takes 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 Howes depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- 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.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, send an email to info@mrmastic.co.uk.
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External mastic in Howes: local notes
Howes is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. 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.
For landlords with property near Annan station, split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Old Parish Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Howes is about 14 miles east of Dumfries, in Dumfries and Galloway. From the centre of Howes to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Howes is one of 138 towns and villages in Dumfries and Galloway where we work for external mastic. We also work in Edinburgh, around 66 miles away.
We work across DG12 for external mastic. Other places close to Howes include Annan (1 mile east), Newbie (1 mile south-west), Brydekirk (2 miles north), Powfoot (3 miles west) and Dornock (3 miles east). Further out, we also cover Dumfries (14 miles west), Lockerbie (10 miles north), Heathhall (14 miles north-west), Langholm (15 miles north-east), Gretna (8 miles east) and Lochmaben (12 miles north-west).
What’s near Howes
Locally, jobs take us to homes and businesses close to Queensberry Arms Hotel, among other places. Howes’s nearest station is Annan station, roughly 0.6 miles south-east. Other landmarks nearby include Annan Museum (within half a mile south-east) and Annan Hospital (0.9 miles east). Open spaces near Howes include Campfield Marsh RSPB reserve.
Why act early in Howes
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so the old joint is cut out fully first. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why book with us
- We leave the area clean and tidy
- 20+ years of sealant experience
- Arbo and Everbuild products
- One-year guarantee on every job
See our cost guide or what customers say.
How the job changes by surface
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. The old joint is removed and a sealant that bonds to both sides goes in.
Also in Howes
Landlords, agents and businesses in Howes
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
When to call us in Howes
Some movement joints have been pointed up with mortar. The joint can’t move, so the wall cracks somewhere else instead.
Keep an eye out for these signs:
- Damp patches traced to an open external joint
- Movement joints filled with mortar instead of sealant
- Weathered mastic that no longer stretches
- Moss and dirt in joints with no sealant left
Schools such as Annan Academy are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Before booking anyone
- Is VAT in the price?
- Which colour the sealant will be
- What the cure time is
- How long the guarantee is
Howes questions
Is external mastic in a coastal place like Howes any different?
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.
Do you work for landlords with property near Annan station?
Yes, we work for landlords and letting agents. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear quote.
What is backing rod for?
That is backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Pointing it stops it working. We’ll reseal it with a flexible sealant.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.