Aberdeenshire · Scotland
Window Mastic in Strachan
Window mastic in Strachan from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cold air getting in at the frame edge
- White mastic on grey or black frames
- Water coming in at the bottom corners of a door
Window mastic for homes and businesses in Strachan
There are two joints on most windows. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. If you’re dealing with leaking joints at the ends of sills and sealant in the wrong colour for the frame, we can help, on aluminium frames, composite doors and uPVC windows alike.
Outdoor sealant needs a dry surface, so window work around Strachan is planned around the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
All our work comes with a 12-month guarantee, wherever you are in Aberdeenshire.
- Where
- Strachan (AB31)
- Wider area
- Aberdeenshire
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Do you need window mastic in Strachan?
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
If you can see any of these, it’s time to have the joints looked at:
- Cracked internal joints between frame and plaster
- Black, perished sealant on frames
- Gaps where the sill meets the wall
- Rain getting in at the frame or under the sill
If you live in an older home near Strachan Parish Church And Churchyard, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- Whether the sealant suits the joint
- When the joint can take water or movement
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Ventilate rooms so frames do not stay wet inside
- Keep paint off silicone joints
- Check the mastic once a year
- Avoid blasting the frames with a pressure washer
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
How the job changes by surface
Composite doors
A composite door normally sits in a plastic outer frame, so its perimeter joint is sealed much like a window. We match the colour to the frame.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so we pay close attention there.
Towns and villages near Strachan
More services for Strachan
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
What we do, step by step
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take most of a day for a typical house, less for a few frames. Outdoor work around Strachan depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- 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.
Getting ready for the visit
- Mention if the joints have been sealed before
- Tell us about any water getting in
- Move anything stored near the joints
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you’re ready, email us at info@mrmastic.co.uk.
Advice
What happens if it’s left?
Resealing frames is a short job: the visit takes anything from an hour or two to a full day, depending on how many frames there are. Wait for damp to appear and there may be plaster and decorating to sort out too. Around Strachan, water from a failed joint in an older stone home can soak into timber and plaster.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What you get with us
- Trusted Arbo and Everbuild sealants
- We leave the area clean and tidy
- One-year guarantee on every job
- Full insurance on every job
Read what affects the cost and what customers say.
Strachan homes and the weather
Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Around Strachan, as everywhere, window mastic is only as good as the preparation behind it.
Strachan is about 18 miles south-west of Aberdeen, in Aberdeenshire. Strachan gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 161 places across Aberdeenshire, large and small. You can also see our page for Aberdeen, about 18 miles away.
We cover every part of the AB31 postcode area for window mastic and the streets around it. If you need window mastic at a property on Bowbutts Brae and Feugh View or a nearby road, our applicators can take on the job. We also cover the places around Strachan: Banchory (3 miles north-east), Inchmarlo (3 miles north), Crossroads (5 miles east), Crathes (5 miles north-east) and Potarch (5 miles north-west). Further out, we also cover Westhill (13 miles north-east), Stonehaven (12 miles east), Kemnay (15 miles north), Laurencekirk (13 miles south), Aboyne (10 miles west) and Newtonhill (14 miles east).
Local landmarks in Strachan
Other landmarks nearby include Glen O'Dee Hospital (2.8 miles north) and Castlehill of Strachan (1.2 miles west). Not far away are Scolty Hill and Black Loch.
Strachan: your questions answered
Will you come out to Strachan?
Yes. Strachan is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Do you cover Strachan for window mastic?
Yes. We work across all of Scotland, and Strachan is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Can you seal over the old sealant?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
How do I get a quote for window mastic in Strachan?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before we start.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Strachan, along with the rest of our area.