Aberdeen · Scotland
Window & door mastic in Charlestown, Aberdeen
Mastic around window and door frames, sills and patio doors for homes and businesses in Charlestown and across Aberdeen. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cracked sealant at the sill ends
- Draughty joints inside around the window
- Water coming in at the bottom corners of a door
Window mastic in Charlestown
Around Charlestown we seal all kinds of frames: from uPVC casements to timber and aluminium, plus patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. We work on window sills, composite doors and uPVC windows, and common reasons people get in touch are black, perished sealant on frames and a bead that doesn’t match the frame.
Outdoor sealant needs a dry surface, so window work around Charlestown is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
The work is covered for a year after we finish. If anything isn’t right with it, email us at info@mrmastic.co.uk.
- Location
- Charlestown (AB12)
- Wider area
- Aberdeen
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Avoid blasting the frames with a pressure washer
- Air rooms to keep condensation down around windows
- Do not use solvent cleaners on the joint
- Keep timber frames painted
Most silicone sealants won’t take paint, so mention any painting plans before any work starts. There are paintable sealants for joints that need it.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
What we do, step by step
The work is kept neat and contained to the area we’re working on. Expect the work to take a few hours for a few frames, or a day or more for a whole house, and we explain the cure time before we leave. Around Charlestown, 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.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
How to prepare
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- For business premises, tell us about site rules or sign-in
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and send you a clear quote.
Advice
Signs you need window mastic in Charlestown
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. A sealant that cannot keep up eventually tears.
Keep an eye out for any of the following:
- Draughty joints inside around the window
- Rain getting in at the frame or under the sill
- Leaking joints at the ends of sills
- Cracked or shrunken mastic around the frame
For site and facilities teams at buildings such as Lochside Academy, its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- How the colour is chosen
- Whether VAT is included
- What insurance they hold
- What guarantee comes with the work
What we cannot put right
To be straight with you, some problems need a different trade:
- Faulty window hardware
- Damp coming through the wall itself rather than the frame joint
- Worn gaskets, brush seals or a door that has dropped
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before you book.
Joints and surfaces we work on
- Aluminium frames
- Patio & French doors
- uPVC windows
- Composite doors
- Window sills
- Timber windows & doors
Can I do it myself?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Charlestown: your questions answered
Will you come out to Charlestown?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Portlethen 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’ll give you a fixed price before any work starts.
What do you need from me for a quote?
A short description and the location, with photos by email if possible. We’ll ask anything else we need to know.
Can you get sealant to suit coloured frames?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Is the new sealant paintable?
It depends on the sealant. Silicone isn’t paintable, but some hybrid sealants are. Mention any painting plans before we start.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we are done.
Is the work guaranteed?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Landlords, agents and businesses in Charlestown
In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Window mastic in Charlestown: local notes
Charlestown is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Historic houses like Friendville (about 2.4 miles north) are a reminder that the area around Charlestown has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you live in an older home near St Mary's Church, the joint between an old wall and a newer frame is usually the first place rain gets in. For landlords with property near Portlethen station, renewing tired window mastic between tenants heads off draught and damp complaints.
Charlestown is about 4 miles south of Aberdeen, in Aberdeen. Jobs in Charlestown get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 63 towns and villages across Aberdeen.
We work across the AB12 postcode area for window mastic and the streets around it. Nearby, we also carry out window mastic in Kincorth (1 mile north), Garthdee (2 miles north-west), Kaimhill (2 miles north), Banchory-Devenick (2 miles north-west) and Broomhill (2 miles north). We also work in nearby towns such as Aberdeen (4 miles north), Rosemount (3 miles north), Berryden (4 miles north), Ferryhill (3 miles north), New Aberdeen (3 miles north) and Dyce (8 miles north-west).
What’s near Charlestown
The closest station to Charlestown is Portlethen station, about 2.7 miles south. Nearby you’ll also find Gordon Highlanders Museum (2.9 miles north-west) and Aberdeen Trades Hospitals (3.3 miles north). Open spaces near Charlestown include Blue Hill and Portlethen Moss.
What affects the quote in Charlestown
For a quick quote, just ask. What matters most is:
- The number of rooms or windows
- How easy the joints are to reach
- The product the joint needs
- Whether there’s mould to deal with
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Asking for a quote
When you contact us, it’s useful to know:
- Where the job is, and your postcode
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
Need a quote? Please drop us a line at info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.