Orkney Islands · Scotland
Window & door mastic in Isbister, Orkney Islands
Mastic around window and door frames, sills and patio doors for homes and businesses in Isbister and across the Orkney Islands. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cracked internal joints between frame and plaster
- Rushed sealant from a window installation
- Damp patches on the reveal after heavy rain
Leave it or put it right?
If you are painting or rendering, reseal at the same time. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. Exposed walls in smaller Scottish places take a lot of wind and rain, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Leaving a failed joint usually makes the job bigger, not smaller. If you are unsure, send an email to info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Why Isbister customers choose us
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
- A sealant colour to suit the surroundings
- Over 20 years’ experience
Read how sealant jobs are priced or our reviews.
Window mastic in Isbister
Homes in Isbister have every kind of window: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. If you are dealing with rain getting in at the frame or under the sill and hard, cracked sealant around windows, we can put it right.
In and around a place like Isbister, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill.
Big or small, you get the same one-year guarantee in Isbister and across the Orkney Islands.
- Where
- Isbister (KW17)
- Region
- Orkney Islands
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Housing providers, facilities teams and property managers book us too in Isbister and across the Orkney Islands. Several sites can go on one quote, and we are fully insured.
Towns and villages near Isbister
Other services in Isbister
When to call us in Isbister
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
The most common problems we see are:
- Black, perished sealant on frames
- Damp patches on the reveal after heavy rain
- Draughty joints inside around the window
- Cracked or shrunken mastic around the frame
Whether the job is in Isbister itself or nearby, the right material for each joint matters as much as a neat finish.
Comparing quotes
- Whether all the old sealant comes out first
- What the cure time is
- Who turns up on the day
- How the surfaces are prepared before sealing
How the visit works
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the work takes a morning for a couple of windows and a door in most cases. Outdoor work around Isbister 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.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
- For business premises, tell us about site rules or sign-in
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Advice
Questions from Isbister
Does living near the coast affect window mastic in Isbister?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you cover smaller places like Isbister?
Yes. Isbister is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland, including the islands, where work is planned around ferry crossings. Just mention lanes, gates or anything else about the route when you book.
Will the old sealant be removed?
Yes, always, and completely. New sealant will not bond properly to old, so the joint is cleaned back first.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Can new window sealant be painted?
That depends on the product. Some hybrid sealants can be painted; silicone can’t. Mention any painting plans before we start.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
Can landlords and businesses book you?
Yes, often. Several properties can be quoted together, and between tenancies is a good time for the work.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Quotes for window mastic in Isbister
We quote each job individually. This is what makes a difference:
- Whether the work is at height
- Any mould that needs treating
- The number of rooms or windows
- How much there is to do
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
What we need to know
To make quoting easier, let us know:
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
If you are in Isbister and need window mastic, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before we start.
Frames and glazing around Isbister
Isbister is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Island jobs need planning around ferries and the weather, so the more notice, the better.
Around Isbister, as everywhere, window mastic is only as good as the preparation behind it.
Isbister is about 6 miles north-west of Kirkwall, in the Orkney Islands. Jobs in Isbister get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 51 places in the Orkney Islands are on our list.
All of KW17 is covered for window mastic. Close by, we work in Norseman (1 mile west), Gorseness (2 miles north-east), Settiscarth (2 miles west), Tingwall (3 miles north) and Finstown (4 miles south-west). Remote and island addresses need a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Landmarks near Isbister
Well-known places in the area include Langskaill House (3.3 miles north-east). The countryside around Isbister includes Enyas Hill and Birsay moors RSPB Reserve.
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Broken hinges, locks or handles
- Damp coming through the wall itself rather than the frame joint
- Condensation trapped between the panes
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly before you book.
Where we work in Isbister
- Window sills
- Timber windows & doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Composite doors
Different surfaces, different methods
Composite doors
A composite door generally sits in a plastic outer frame, and the joint around it is sealed like a window. We match the colour to the frame.
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the threshold joint takes a lot of water. Each is cleaned, backed where deep and resealed.