North Lanarkshire · Scotland
Westerwood Window Mastic
We cover Westerwood for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- Rain getting in at the frame or under the sill
- Draughty joints inside around the window
- White mastic on grey or black frames
Signs you need window mastic in Westerwood
Timber windows bring their own problems. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
Look out for any of the following:
- A bead that doesn’t match the frame
- Rain getting in at the frame or under the sill
- Mastic that has split away from the wall
- Cracked internal joints between frame and plaster
Letting a property close to Cumbernauld station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Questions to ask before booking
- Whether VAT is included
- Who turns up on the day
- Whether they seal over old material or remove it
- How the joint is cleaned and prepared
How we handle window mastic in Westerwood
Over two decades of sealing frames has taught us which products suit which walls. We are ARBOMaster approved and fully insured, and every job is covered by a 12-month guarantee. We work on timber windows & doors, window sills and composite doors, and common reasons people get in touch are cracked internal joints between frame and plaster and old mastic that has gone black or come away.
Many older Scottish homes still have timber windows set into stone walls. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Westerwood (G68, G67)
- Region
- North Lanarkshire
- Cover
- A year, on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Questions from Westerwood
Do you work for landlords with property near Cumbernauld station?
Yes, rental work is part of what we do. You can email us at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before we start.
Do you cover smaller places like Westerwood?
Yes. Westerwood is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Can new window sealant be painted?
It depends on the sealant. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before work begins.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We check where the draught is before any work starts.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Are you fully insured?
Yes. We’re fully insured.
What should I tell you?
Let us know what needs doing and where, plus photos if you have them. We’ll ask anything else we need to know.
The process
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. The job generally takes a few hours for a few frames, or a day or more for a whole house. Outdoor work around Westerwood depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Mention any parking rules near the property
- Mention if the joints have been sealed before
- Clear the area around the work
How to get a quote
We quote each job on its own, so start by telling us what you need. Just drop us a line at info@mrmastic.co.uk with the details, and photos are welcome.
Read more
How the job changes by surface
Composite doors
A composite door generally sits in a plastic outer frame, so its perimeter joint is sealed much like a window. We match the colour to the frame.
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
What affects the cost of window mastic
Every job gets its own quote. This is what makes a difference:
- The number and length of the joints
- Which sealant suits the joint
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- A few photos by email, if you can
- Whether it’s a home or a business
- Any access issues, like height or stairs
- The problem you’ve noticed
To get a quote, send an email to info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
Frames and glazing around Westerwood
Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic. 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 Abronhill High School? Then the mastic around its windows and doors needs looking after like any other building’s.
Westerwood is about 1 mile north of Cumbernauld, in North Lanarkshire. Our applicators cover window mastic for homes and businesses in Westerwood and nearby, as part of our work across North Lanarkshire. 89 places in North Lanarkshire are on our list, from the larger towns to small villages. Our Glasgow page covers work nearby.
Work in G68 and G67 is quoted and booked the same way as anywhere else. If you need window mastic at a property on Portland Road, Muirfield Road and Gleneagles Avenue or a nearby road, our applicators can take on the job. Other places close to Westerwood include Cumbernauld Village (1 mile south), Carrickstone (1 mile south-west), Cumbernauld (1 mile south), Abronhill (1 mile east) and Carbrain (2 miles south). We also work in nearby towns such as Motherwell (12 miles south), Coatbridge (8 miles south), Airdrie (7 miles south), Wishaw (13 miles south), Bellshill (10 miles south) and Kilsyth (3 miles west).
What’s near Westerwood
In Westerwood, that means homes and buildings near The Masonic Arms, among other places. For rail, the closest station is Cumbernauld station, roughly 1.8 miles south. Well-known places in the area include Antonine Centre (1.4 miles south) and Cumbernauld Museum (1.4 miles south). Open spaces near Westerwood include Bar Hill.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Keep jet washers away from the mastic
- Check the mastic once a year
- Wash the frames with mild soapy water
- Do not use solvent cleaners on the joint
Check the drainage slots in the frames are not blocked, so water can run away instead of sitting against the joint.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
Towns and villages near Westerwood
More services for Westerwood
Why deal with it now?
Resealing frames is a short job: it takes a few hours for a few frames, or a day or more for a whole house. Leave it until water is coming in and you may need plastering and decorating as well. Around Westerwood, 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.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why book with us
- Colour agreed with you before any work starts
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- Sealant colour chosen to suit
Read how sealant jobs are priced or our reviews.