Midlothian · Scotland
Window Mastic in Bonnyrigg
Window mastic for Bonnyrigg, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Leaking joints at the ends of sills
- Old mastic that has gone black or come away
- Gaps left after new windows were fitted
Window mastic in Bonnyrigg
From a single sill to a whole house of windows, the work is priced before anything is done. Just drop us a line at info@mrmastic.co.uk and tell us how many frames there are and how they’re reached. If you have gaps left after new windows were fitted and damp patches on the reveal after heavy rain, we can put it right, on window sills, timber windows & doors and uPVC windows alike.
Scottish weather is hard on window mastic, and a town like Bonnyrigg gets its share of wind and rain. Frames on the side that takes the weather usually fail first, so it’s worth checking them all.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Location
- Bonnyrigg (EH19, EH18, EH20)
- Region
- Midlothian
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Why deal with it now?
Redecorating is a good moment to renew the mastic. A clean new bead makes new paint or render look finished. For landlords in Bonnyrigg, damp and leaks can fall under the Repairing Standard. Replacing failed sealant early is simpler than dealing with a complaint.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why book with us
- Over 20 years’ experience
- Every job guaranteed for a year
- Sealant colour chosen to suit
- Tidy, careful work
Read our cost guide and what customers say.
Common questions in Bonnyrigg
Do you cover Bonnyrigg for window mastic?
Yes. We work across all of Scotland, and Bonnyrigg is part of that. You can email us at info@mrmastic.co.uk and tell us what needs doing.
Can you help a landlord with a rental near Eskbank station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can you seal the gap between the frame and the plaster indoors?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We do one or both.
Work for landlords, hotels and businesses
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 go on one quote.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
How it works
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and tidy away. Most jobs take most of a day for a typical house, less for a few frames. In a Scottish town like Bonnyrigg, parking is generally straightforward, though older centres can be tighter. For flats, mention the shared stair or door entry system.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
- Tell us about any water getting in
Getting a quote
For a quote, send an email to info@mrmastic.co.uk with the location and a short description of the problem. We will give you a clear quote before any work starts.
Advice
When to call us in Bonnyrigg
Mastic ages in the weather. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
The most common problems we see are:
- Old mastic that has gone black or come away
- Sealant in the wrong colour for the frame
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
Rented homes near Eskbank station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What your quote should include
- When the joint can take water or movement
- What the quote includes, VAT included or not
- Who does the work, and how experienced they are
- Whether they’re fully insured
Quotes for window mastic in Bonnyrigg
Jobs vary more than people expect. The main factors:
- The amount of work
- The type of sealant required
- Whether the work is at height
- Whether old sealant or filler has to be cut out
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- How many joints, rooms or windows are involved
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Other services in Bonnyrigg
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
If you’re set on DIY, put the effort into 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.
What window mastic looks like in Bonnyrigg
Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic. Historic houses like Melville Castle (about 1.3 miles north) are a reminder that the area around Bonnyrigg has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around Bonnyrigg Parish Church, the joint between an old wall and a newer frame is usually the first place rain gets in. Managing a site like Lasswade High School Centre? Then larger buildings have plenty of frames, and the mastic around each one ages.
Bonnyrigg is about 6 miles south-east of Edinburgh, in Midlothian. Every kind of property in Bonnyrigg can book us for window mastic. The work is guaranteed for a year. Bonnyrigg is one of 33 towns and villages in Midlothian we cover for window mastic. We also work in Edinburgh, around 6 miles away.
Every address in EH19, EH18 and EH20 is within our area for window mastic, from the main roads to the quietest streets. Whether your property is on Old Market Place, High Street and Church Road or a nearby road, our applicators can take on the job. With the A768 and B704 close by, Bonnyrigg is easy for our applicators to reach. Other places close to Bonnyrigg include Lasswade (1 mile north-west), Polton (1 mile west), Rosewell (2 miles south-west), Loanhead (2 miles west) and Roslin (3 miles west). Further out, we also cover Penicuik (5 miles south-west), Gorebridge (3 miles south-east), Mayfield (3 miles east), Shawfair (4 miles north), Danderhall (3 miles north) and Bilston (3 miles west). Being one of Midlothian’s larger places, Bonnyrigg has homes, rented property and businesses of every kind.
What’s near Bonnyrigg
In Bonnyrigg, that means homes and buildings near Public Library and the streets around them. The closest station to Bonnyrigg is Eskbank station, roughly 1.1 miles north-east. A little further out are Dalhousie Castle (1.2 miles south-east) and Midlothian Community Hospital (0.8 miles north-east). The countryside around Bonnyrigg includes The New Leaf Co-op and Edgelaw Reservoir.
How the job changes by surface
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.