Highland · Scotland
Glengolly Window Mastic
Window mastic in Glengolly from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked sealant at the sill ends
- Water coming in at the bottom corners of a door
- Cold air getting in at the frame edge
About our window mastic in Glengolly
There are two joints on most windows. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. We work on window sills, aluminium frames and composite doors, and people most often call us about black, perished sealant on frames and cracked or shrunken mastic around the frame.
Outdoor sealant needs a dry surface, so window work around Glengolly is planned around the weather. Tell us about access to all the windows and doors, upstairs included.
All our work comes with our one-year guarantee, wherever you are in Highland.
- Place
- Glengolly (KW14)
- Wider area
- Highland
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Glengolly questions
I let a flat near Thurso station. Can you help?
Yes. We work for landlords and agents as well as householders. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Does the coastal weather in Glengolly affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
How long does it take to reseal the windows on a house?
A few frames take a few hours. You’ll get a timescale with the quote.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.
Can you quote for more than one area?
Yes. Just list everything you need.
Do you have insurance?
Yes, we are fully insured for domestic and commercial work.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
How much does window mastic cost in Glengolly?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
What happens on the day
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a morning for a couple of windows and a door. Around Glengolly, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Keep pets and children clear of the area while we work
- Clear the area around the work
- Let us know about stairs, lifts or work at height
Getting a quote
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Advice
When something else is needed
New sealant cannot fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Damp coming through the wall itself rather than the frame joint
- Rotten timber, which needs a joiner first
- Broken hinges, locks or handles
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think.
Joints and surfaces we work on
- Timber windows & doors
- Aluminium frames
- Window sills
- Patio & French doors
- uPVC windows
- Composite doors
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Don’t use solvent cleaners on the joint
- Don’t paint over the silicone
- Keep drainage slots and sill grooves clear
- Air rooms to keep condensation down around windows
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
Quotes for window mastic in Glengolly
Jobs vary more than people expect. What affects the quote:
- The product the joint needs
- Access and height
- The number and length of the joints
- Whether there’s mould to deal with
What you pay reflects the work, not guesswork. That is why we ask about the job first and agree the price before starting.
What to tell us for a quote
When you contact us, these details help:
- How we’d reach the joints
- The type of property
- The address or postcode of the job
- Photos by email, if that’s easy
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
More services for Glengolly
What window mastic looks like in Glengolly
Glengolly 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. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
If you let a flat or house near Thurso station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Glengolly is about 2 miles south-west of Thurso, in Highland. Homes, rented property, offices and hotels in Glengolly can book us for window mastic. The work is guaranteed for a year. We cover 253 towns and villages across Highland.
All of KW14 is covered for window mastic, from the main roads to the quietest streets. Neighbouring places we cover for window mastic include Janetstown (1 mile west), Thurso (2 miles north-east), Scrabster (3 miles north), Westfield (3 miles south-west) and Forss (4 miles north-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Near you in Glengolly
The nearest railway station is Thurso station, roughly 1.5 miles north-east of the centre. Other landmarks nearby include Scrabster Castle (2.1 miles north) and Dunbar Hospital (0.9 miles north). The countryside around Glengolly includes Loch Calder.
Do you need window mastic in Glengolly?
Mastic ages in the weather. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
Common reasons people contact us are:
- White mastic on grey or black frames
- Gaps where the sill meets the wall
- Gaps left after new windows were fitted
- Draughts coming in around windows and doors
If you look after a building such as Thurso High School, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- How hidden problems are handled
- How the joint is cleaned and prepared
- What the cure time is
- What the quote includes, VAT included or not
What happens if it’s left?
A quick bead over the top of old mastic looks like an easy fix, but it will not grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Why choose Mr Mastic in Glengolly
- More than 20 years in sealant work
- Sanitary silicone with an anti-fungal additive in wet areas
- Homes, businesses and hotels
- Old sealant always removed completely