Aberdeen · Scotland
Banchory-Devenick Window Mastic
Window mastic for Banchory-Devenick, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughty joints inside around the window
- Hard, cracked sealant around windows
- Leaking joints at the ends of sills
About our window mastic in Banchory-Devenick
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. Common call-outs are for whistling draughts around closed windows and rain getting in at the frame or under the sill, across window sills, timber windows & doors and composite doors.
Many older Scottish homes still have timber windows set into stone walls. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
Each job carries a 12-month guarantee, large or small.
- Where
- Banchory-Devenick (AB15, AB10, AB12)
- Wider area
- Aberdeen
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
If you do try it yourself, take your time over the 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.
Frames and glazing around Banchory-Devenick
Historic houses like Friendville (about 1.6 miles north-east) are a reminder that the area around Banchory-Devenick has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
If you live in an older home near St Devenick's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Aberdeen station? Then renewing tired window mastic between tenants heads off draught and damp complaints. If you look after a building such as Cults Academy, larger buildings have plenty of frames, and the mastic around each one ages.
Banchory-Devenick is about 3 miles south-west of Ferryhill, in Aberdeen. Jobs in Banchory-Devenick get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Banchory-Devenick is one of 63 places in Aberdeen where we work.
Postcode districts we cover here for window mastic: AB15, AB10 and AB12. If you need window mastic at a property on Inchgarth Road and Inchgarth Mews or anywhere close by, our applicators can take on the job. Other places close to Banchory-Devenick include Cults (1 mile north-west), Garthdee (1 mile north-east), Braeside (1 mile north), Kaimhill (1 mile north-east) and Broomhill (2 miles north-east). Further out, we also cover Aberdeen (3 miles north-east), Rosemount (3 miles north-east), Berryden (3 miles north-east), Ferryhill (3 miles north-east), New Aberdeen (3 miles north-east) and Dyce (6 miles north).
Near you in Banchory-Devenick
We work in homes and buildings around Hazlehead Park, among other places. The closest station to Banchory-Devenick is Aberdeen station, roughly 3 miles north-east of the centre. Other landmarks nearby include Pitfoddels Castle (less than half a mile north-east) and Trinity Centre (3.1 miles north-east). Green spaces nearby include Rubislaw Quarry and Blue Hill.
How we quote for window mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Working hours on commercial sites
- Any mould that needs treating
- The product the joint needs
- The old material and how stubborn it is
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Call for a quick quote and we’ll go through it with you.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, email us at info@mrmastic.co.uk.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Clear any debris from frame drain holes
- Use gentle cleaners on frames and sealant
- Avoid blasting the frames with a pressure washer
- Keep paint off silicone joints
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 failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
Honest limits
Sealant is not the answer to every problem, and we’ll tell you before we start. Sealant won’t put right:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Rotten timber, which needs a joiner first
- Broken hinges, locks or handles
If you’re not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer.
Where we work in Banchory-Devenick
- Aluminium frames
- uPVC windows
- Composite doors
- Patio & French doors
- Timber windows & doors
- Window sills
What else we do in Banchory-Devenick
Banchory-Devenick: your questions answered
Do you cover smaller places like Banchory-Devenick?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Is Banchory-Devenick in your area for window mastic?
Yes, Banchory-Devenick is within the area we cover. Our work covers the whole of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
Is the new sealant paintable?
Not if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
Can you reach windows above the ground floor?
Yes, where it’s safe. Higher or awkward frames may need extra access, and we’ll confirm what’s needed.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
How long does it take to reseal the windows on a house?
The work takes a few hours for a few frames, or a day or more for a whole house. Access and how stubborn the old mastic is affect the time most.
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.
Does the work come with a guarantee?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
How the job changes by surface
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Timber windows & doors
Timber moves with moisture as well as heat, so a flexible sealant is essential. The paint or stain needs to be sound where the sealant meets it.
How the visit works
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the work takes anything from an hour or two to a full day, depending on how many frames there are for a typical job. Outside jobs in Banchory-Devenick need a dry day, because sealant won’t bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
How to prepare
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
Get a quote
We quote each job on its own, so the first step is telling us about yours. Just email us at info@mrmastic.co.uk with the details, and photos are welcome.
Related advice
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.