Na h-Eileanan Siar · Scotland
Sand Mastic in North Tolsta
Window and door surrounds in North Tolsta need attention? We remove the old material, prepare the joints and seal them properly.
- Silicone on a period window that looks wrong
- Draughts and rain around sash boxes
- Mastic that needs renewing before redecorating
How we handle sand mastic in North Tolsta
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We are often asked to deal with old cement repairs round a window that have failed and gaps between timber frames and stone or brick, across tenement windows, period & listed homes and stone surrounds.
Many older Scottish homes still have timber windows set into stone walls. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- North Tolsta (HS2)
- Wider area
- Na h-Eileanan Siar
- Cover
- One year on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Why act early in North Tolsta
An open joint round the frame lets weather in. Left, water can reach the timber and the wall so renewing it early protects the window. 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.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What you get with us
- 20+ years of sealant experience
- Any old sealant cut out fully, not covered over
- ARBOMaster approved applicator
- Homes, businesses and hotels
Frames and glazing around North Tolsta
North Tolsta 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 older windows and doors, which can dry out and crack sooner where a building faces the weather. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
In and around North Tolsta, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
North Tolsta is about 11 miles north-east of Stornoway, in Na h-Eileanan Siar. Our applicators cover sand mastic for householders, landlords and businesses in North Tolsta and nearby, as part of our work across Na h-Eileanan Siar. North Tolsta is one of 87 towns and villages in Na h-Eileanan Siar where we work for sand mastic.
We cover every part of the HS2 postcode area for sand mastic. Streets in the area include School Road, New Street and Hill Street. If you’re just outside North Tolsta, we cover Tolastadh bho Thuath (1 mile south), Back (5 miles south-west), Bac (6 miles south-west), Port Mholair (7 miles south) and Portvoller (7 miles south). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Around North Tolsta
Open spaces near North Tolsta include Muirneag and Loch Langavat.
What we can’t put right
A few problems are outside what sealant work can do:
- Sashes that need overhauling
- Masonry that needs repairing
- Decayed frames that need repair
If you are not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer before you book.
Joints and surfaces we work on
- Brick reveals
- Timber door frames
- Period & listed homes
- Tenement windows
- Stone surrounds
- Sash and case windows
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Your questions about sand mastic in North Tolsta
Is sand mastic in a coastal place like North Tolsta any different?
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.
Is North Tolsta within the area you cover?
Yes, we do. We work across all of Scotland, islands included, from towns to the smallest places. Longer journeys are simply planned in advance.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Which is right for my windows, sand mastic or modern sealant?
We’ll help you decide. Period homes often look best with sand mastic, and modern sealants suit newer frames.
What does sand mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Are you fully insured?
Yes. We’re fully insured.
When to call us in North Tolsta
Shallow joints are a common cause. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
Any of these means the joints need attention:
- Window mastic to renew ahead of painting
- Mastic dropping out of the joint
- Draughts and rain around sash boxes
- A silicone bead on a sash window that spoils the look
Whether the job is in North Tolsta itself or nearby, the right material for each joint matters as much as a neat finish.
Before you book anyone
- Whether VAT is included
- What product goes in the joint
- How hidden problems are handled
- Are they insured?
Towns and villages near North Tolsta
Other services in North Tolsta
What the job involves on each surface
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
What affects the quote in North Tolsta
Your quote is based on your job. We take into account:
- The old material and how stubborn it is
- How much there is to do
- The product the joint needs
- Any mould that needs treating
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
What we need to know
Before you ask for a quote, have a think about:
- Pictures of the joints, sent by email
- Where the job is, and your postcode
- Whether it’s a home or a business
- If someone has resealed it before
Need a quote? Please drop us a line at info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
The process
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. Expect the work to take a few hours for a single window, longer for several, and we explain the cure time before we leave. Somewhere like North Tolsta 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.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Mention any parking rules near the property
- Mention if the joints have been sealed before
Getting a quote
To get a quote, email us at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.