Highland · Scotland
Window & door mastic in Hastigrow, Highland
We cover Hastigrow for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Old mastic that has gone black or come away
- Water coming in at the bottom corners of a door
- Gaps left after new windows were fitted
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Window mastic for homes and businesses in Hastigrow
Colour matters on a frame. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. If you have water coming in at the bottom corners of a door and gaps left after new windows were fitted, we can help, whatever the surface.
Mastic can only go onto a dry joint, so outside work in Hastigrow depends on the weather. Tell us about access to all the windows and doors, upstairs included.
Your job is guaranteed for a year, as with all our work.
- Location
- Hastigrow (KW1)
- Region
- Highland
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What else we do in Hastigrow
Why it’s worth doing now in Hastigrow
Not every sealant suits a window. Interior caulk and bathroom silicone are not made for exterior frame joints. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why choose Mr Mastic in Hastigrow
- ARBOMaster approved applicator
- Every job guaranteed for a year
- White, clear, grey or coloured to suit, where the product allows
- Any old sealant cut out fully, not covered over
Take a look at our cost guide or our reviews.
Quotes for window mastic in Hastigrow
We do not publish a price list, because jobs vary so much. What we look at:
- Which sealant suits the joint
- How many areas need sealing
- The number and length of the joints
- The old material and how stubborn it is
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Whether it’s a home or a business
- The address or postcode of the job
- Any access issues, like height or stairs
- What’s wrong with the joints now
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will talk you through the work and give you a clear price.
For landlords and businesses
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
For anyone letting property in or around Hastigrow, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and photos by email help.
Signs you need window mastic in Hastigrow
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
The most common problems we see are:
- Cracked sealant at the sill ends
- Mastic that’s falling out in pieces
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
In and around Hastigrow, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
Before booking anyone
- What the quote includes, VAT included or not
- How much experience the applicator has
- Whether you can choose the colour
- The length of the guarantee
What we do, step by step
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a handful of frames, longer for a whole house. Somewhere like Hastigrow may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- 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
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
- On commercial sites, let us know about site rules
Getting a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
Windows and doors in Hastigrow
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
Whether the job is in Hastigrow itself or nearby, the right material for each joint matters as much as a neat finish.
Hastigrow is about 10 miles south-east of Thurso, in Highland. For window mastic in and around Hastigrow, please drop us a line at info@mrmastic.co.uk for a quick quote. We cover Highland from our Crawley base, Hastigrow included. Our Highland coverage runs to 253 places, Hastigrow among them.
Every address in KW1 is within our area for window mastic. Hastigrow is on the B876, so it’s easy for us to get to. Other places close to Hastigrow include Bower (2 miles north-west), Gillock (3 miles west), Watten (4 miles south), Keiss (5 miles east) and Reiss (6 miles south-east). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Local landmarks in Hastigrow
Not far away are Loch Watten.
Common questions in Hastigrow
Is Hastigrow in your area for window mastic?
Yes. Our work covers the whole of Scotland, and Hastigrow is part of that. Just send an email to info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
Will you come out to Hastigrow?
Yes, we do. We work across all of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Where are you based?
We work from Crawley. We cover Hastigrow and the rest of Highland.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do you have insurance?
Yes. Mr Mastic is fully insured.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Ventilate rooms so frames do not stay wet inside
- Don’t aim a pressure washer at the joints
- Clean frames with a soft cloth and soapy water
- Clear any debris from frame drain holes
Have a look at the joints once a year, ideally after winter. Small splits are simple to catch before they leak.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.