West Lothian · Scotland
External Mastic in Dechmont
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Dechmont. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Leaking joints around cladding and façade panels
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
Dechmont questions
Do you cover Dechmont for external mastic?
Yes, Dechmont is within the area we cover. Our work covers the whole of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job.
Will you come out to Dechmont?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides, primed where needed.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
External mastic for homes and businesses in Dechmont
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. Common call-outs are for sealant pulling away from one side of the joint and movement joints with cracked, split or missing sealant, on copings & trims, render & cladding joints and joints between brick and frames.
In and around a place like Dechmont, many buildings face open ground and take the full weather. Outside joints on exposed walls work hard.
We stand behind the work with a 12-month guarantee.
- Place
- Dechmont (EH52)
- Region
- West Lothian
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Surface by surface
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. A primer goes on where the product requires one before the bead.
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Also near Dechmont
More services for Dechmont
Landlords, agents and businesses in Dechmont
If you manage several properties in or around Dechmont, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
We also work for property managers and facilities teams. We can quote a run of properties together.
What sealant work can’t fix
Sealant isn’t the answer to every problem, and we’d rather say so up front. It will not solve:
- Movement that is more than a sealant joint can take
- Cracking across the wall rather than at a joint
- Adding movement joints to masonry that has none
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think.
Where we work in Dechmont
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Façade panels
- Concrete & block
- Joints between brick and frames
Dechmont buildings and the weather
With historic houses such as Howden House (about 2.1 miles south) nearby, there’s older building stock in the area around Dechmont as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
If you live in an older home near Former Memorial Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you look after a building such as Deans Community High School, its movement joints, gutters and trims need looking after like any other building’s. For landlords with property near Uphall station, outside joints that have cracked can let damp into a rental, so check them between lets.
Dechmont is about 2 miles north of Livingston, in West Lothian. For external mastic in and around Dechmont, please drop us a line at info@mrmastic.co.uk for a quick quote. We cover West Lothian from our Crawley base, Dechmont included. Our West Lothian coverage runs to 58 places, and Dechmont is one of them. Our Edinburgh page covers work nearby (13 miles or so).
Our applicators cover all of the EH52 postcode area for external mastic and the streets around it. If you need external mastic at a property on Main Street, Knightsridge Road and Burnhouse Drive or anywhere close by, our applicators can take on the job. If you are just outside Dechmont, we cover Knightsridge (1 mile south-east), Uphall Station (1 mile east), Kirkton (1 mile south), Uphall (1 mile north-east) and Deans (1 mile south-west). Larger places within reach include Bathgate (4 miles west), Linlithgow (5 miles north-west), Whitburn (7 miles south-west), East Calder (4 miles south-east), Armadale (7 miles west) and Calderwood (4 miles east).
Local landmarks in Dechmont
The nearest railway station is Uphall station, about 1.3 miles east. Other landmarks nearby include Illieston Castle (3.8 miles east) and Broxburn Community Museum (2.1 miles east). For a walk, there’s Dechmont Law and Linlithgow Loch.
What happens on the day
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes a few hours to a few days, depending on the length of joint and the access for a typical job. Outside jobs in Dechmont need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors isn’t affected.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
- Tell us about any water getting in
Getting a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we will take it from there.
Read more
How we quote for external mastic
You will get a clear quote before we start. It’s based on:
- Which sealant suits the joint
- The size of the job
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Helping us quote
When you contact us, it’s useful to know:
- Roughly how big the job is
- If someone has resealed it before
- Where the job is, and your postcode
- Any access issues, like height or stairs
If you’re in Dechmont and need external mastic, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Leave the joints unpainted unless we have said otherwise
- Deal with leaking gutters that soak the joints below
- Look over the joints every year, ideally after winter
- Tell anyone working on the walls about the movement joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead over time.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Why act early in Dechmont
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Around Dechmont, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Why Dechmont customers choose us
- You choose the colour before work begins
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
- More than 20 years in sealant work
Read our cost guide and customer reviews.