East Lothian · Scotland
Belhaven Window Mastic
Window mastic in Belhaven from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked internal joints between frame and plaster
- Untidy mastic left by window fitters
- Gaps where the sill meets the wall
What happens on the day
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a morning for a couple of windows and a door from start to finish. Around Belhaven, distance and access matter more than parking. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
Getting a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved before giving you a price.
Related advice
About our window mastic in Belhaven
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We work on timber windows & doors, aluminium frames and uPVC windows, and the jobs we see most are gaps left after new windows were fitted and cold air getting in at the frame edge.
Mastic can only go onto a dry joint, so outside work in Belhaven depends on the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
The work is covered for a year after we finish. If anything is not right with it, drop us a line at info@mrmastic.co.uk.
- Where
- Belhaven (EH42)
- Region
- East Lothian
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Honest limits
It helps to know what we cannot do:
- Penetrating damp from a failed cavity tray or render
- A failed sealed unit that has misted up
- Faulty window hardware
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
Joints and surfaces we work on
- Aluminium frames
- uPVC windows
- Window sills
- Composite doors
- Patio & French doors
- Timber windows & doors
Belhaven: your questions answered
Do you cover smaller places like Belhaven?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Dunbar station?
Yes, we work for landlords and 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.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can you quote for more than one area?
Yes. Just list everything you need and we’ll quote it together.
What should I tell you?
A short description and the location, with pictures by email if possible. If we need more, we will ask.
Can you do the inside joint as well?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
Is the new sealant paintable?
That depends on the product. Silicone is not paintable, but some hybrid sealants are. Tell us if you are decorating and we’ll choose accordingly.
Windows and doors in Belhaven
Belhaven is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
If you live in an older home near Belhaven Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Dunbar station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Belhaven is about 1 mile west of Dunbar, in East Lothian. Every kind of property in Belhaven can book us for window mastic. The work is guaranteed for a year. 48 places in East Lothian are on our list. You can also see our page for Edinburgh, roughly 26 miles from Belhaven.
Here we cover the EH42 postcode area for window mastic. That includes homes and businesses on Back Road, Shore Road and High Street and the roads around them. You will find Belhaven on the A1087, so it’s easy for us to get to. Other places close to Belhaven include West Barns (1 mile south-west), Bielside (1 mile south-west), Dunbar (1 mile east), Broxburn (2 miles south-east) and Spott (2 miles south). Larger places within reach include Haddington (10 miles west), North Berwick (8 miles north-west), Longniddry (14 miles west), Gullane (11 miles west), East Linton (5 miles west) and Aberlady (12 miles west).
Around Belhaven
Belhaven’s nearest station is Dunbar station, roughly 1.1 miles east of the centre. Well-known places in the area include Dunbar Castle (1.1 miles north-east) and Dunbar Town House Museum and Gallery (1 mile east). Not far away are Doon Hill.
Other services in Belhaven
Surface by surface
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour suits the frame.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What affects the quote in Belhaven
There’s no set price list, because no two jobs are the same. What we look at:
- Which sealant suits the joint
- Whether there’s mould to deal with
- The number and length of the joints
- Access and height
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 we need extra access for height. Your quote takes all of that into account.
Helping us quote
When you contact us, these details help:
- Whether it’s a home or a business
- If someone has resealed it before
- Any access issues, like height or stairs
- The problem you’ve noticed
Need a quote? Please email us at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Paint up to the joint, not over it
- Keep solvents and bleach off the sealant
- Look round the frames every year or so
- Ventilate rooms so frames don’t stay wet inside
Silicone cannot generally be painted, so if you are planning to paint the frames or walls, tell us beforehand. There are paintable sealants for joints that need it.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Landlords, agents and businesses in Belhaven
We work for landlords and letting agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
For anyone letting property in or around Belhaven, jobs at different addresses can go on one quote. Send us the addresses and the work at each.