South Lanarkshire · Scotland
Window & door mastic in East Kilbride, South Lanarkshire
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in East Kilbride. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Mastic that is falling out in pieces
- Hard, cracked sealant around windows
- Cracked sealant at the sill ends
For landlords and businesses
We also work for property managers and facilities teams. We can quote a run of properties together.
Landlords and agents in East Kilbride can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Window mastic in East Kilbride, done properly
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. If you’re dealing with draughty joints inside around the window and white mastic on grey or black frames, we can put it right, whatever the surface.
Harled walls are common in Scottish towns like East Kilbride, and the joint between a frame and rough harling needs a sealant that can grip and flex. A bead that sits on top of the harling rather than in the joint soon lets water in.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- East Kilbride (G74, G76)
- Region
- South Lanarkshire
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Keep paint and stain on wooden frames in good order
- Wipe condensation off the frames
- Don’t aim a pressure washer at the joints
- Keep solvents and bleach off the sealant
Have a look at the joints once a year, ideally after winter. Small splits are simple to catch before they leak, and if anything looks wrong, just drop us a line at info@mrmastic.co.uk.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. A new joint closes it up.
Towns and villages near East Kilbride
Other services in East Kilbride
East Kilbride homes and the weather
East Kilbride is in the west of Scotland, which is wetter than the east, which means the mastic around window and door frames has to cope with a lot of rain. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that.
Managing a site like Duncanrig Secondary School? Then its window and door frames need their mastic kept sound, just like a home’s.
East Kilbride is about 7 miles south-east of Glasgow, in South Lanarkshire. Every kind of property in East Kilbride can book us for window mastic. The work is guaranteed for a year. East Kilbride is one of 139 towns and villages in South Lanarkshire where we work. For nearby work, see our Glasgow page.
All of G74 and G76 is covered for window mastic. We cover properties on Symington Square, Main Street and Dunglass Square. Being close to the A725 and A726, East Kilbride is easy for our applicators to reach for window mastic. If you’re just outside East Kilbride, we cover The Murray (1 mile east), West Mains (1 mile north-east), Greenhills (1 mile south), The Village (1 mile north-east) and East Mains (1 mile north-east). Further out, we also cover Hamilton (5 miles east), Cambuslang (5 miles north-east), Uddingston (7 miles north-east), Blantyre (4 miles north-east), Larkhall (9 miles east) and Carluke (14 miles east). Being one of South Lanarkshire’s larger places, East Kilbride has homes, rented property and businesses of every kind.
Landmarks near East Kilbride
In East Kilbride, that means homes and buildings near The Hay Stook pub, among other places. The nearest railway station is East Kilbride station, roughly 0.7 miles north-east of the centre. Well-known places in the area include East Kilbride Shopping Centre (0.6 miles east) and Mains Castle (1.4 miles north). For a walk, there’s Cathkin Braes.
What affects the quote in East Kilbride
For a quick quote, just ask. The main things that affect it are:
- Whether there’s mould to deal with
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start.
What to tell us for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Where the property is
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
We do not publish a price list. Instead, we send you a clear quote for your job. To get started, drop us a line at info@mrmastic.co.uk.
Leave it or put it right?
Running fresh sealant over the old joint is tempting, but new sealant cannot bond to old, crumbling mastic. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. Scottish weather finds any gap, and in a town like East Kilbride, failed outside joints soon let damp into walls. Inside, a failed seal around a bath or shower lets water into floors and ceilings.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What you get with us
- Quality sealants from Arbo and Everbuild
- We leave the area clean and tidy
- Sealant colour chosen to suit
- A 12-month guarantee on all work
See our cost guide and customer reviews.
When to call us in East Kilbride
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, while a joint packed solid can’t stretch. Backing rod sets the right depth.
These are the problems we are asked about most:
- Untidy mastic left by window fitters
- Cracked sealant at the sill ends
- Water coming in at the bottom corners of a door
- Whistling draughts around closed windows
If you let a flat or house near East Kilbride station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Questions to ask before booking
- How long the guarantee is
- Whether you can choose the colour
- Whether the sealant suits the joint
- Is VAT in the price?
What we do, step by step
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take most of a day for a typical house, less for a few frames. In a Scottish town like East Kilbride, parking is generally straightforward, though older centres can be tighter. If you are in a flat with a shared stair or a door entry system, let us know when you book.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Getting ready for the visit
- Mention if the joints have been sealed before
- Tell us about any water getting in
- For business premises, tell us about site rules or sign-in
Ask for a quote
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Related advice
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Condensation trapped between the panes
- Penetrating damp from a failed cavity tray or render
- Rotten timber, which needs a joiner first
If you are not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer.
Surfaces we seal
- Aluminium frames
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Window sills
- Composite doors
Your questions about window mastic in East Kilbride
Is there a guarantee on window mastic in East Kilbride?
All our work, in East Kilbride and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Is East Kilbride in your area for window mastic?
Yes, East Kilbride is within the area we cover. We work across all of Scotland. You can send an email to info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear quote.
Can new window sealant be painted?
That depends on the product. Silicone is not paintable, but some hybrid sealants are. Tell us if you’re decorating and we will choose accordingly.
How much does window mastic cost in East Kilbride?
Size, access and the old material all affect the cost. Ask us for a quote.
Can you match the sealant to my frames?
Yes, we choose a colour to suit the frame. Grey and black frames get grey or black sealant, and wood-effect frames generally suit brown.
Do you seal inside as well as outside?
Yes, we do both. Inside, the joint between frame and plaster is sealed neatly.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. Then drop us a line at info@mrmastic.co.uk.