Na h-Eileanan Siar · Scotland
Sand Mastic in North Dell
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in North Dell, with a 12-month guarantee on every job. Call for a quick quote.
- Silicone on a period window that looks wrong
- Wind and rain getting in round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
About our sand mastic in North Dell
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap and tidies the surround. We work on stone surrounds, tenement windows and period & listed homes, and people most often call us about cement or filler used on old window joints that has cracked and gaps where the frame meets the masonry.
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.
You get a 12-month guarantee, the same in North Dell as everywhere else we work.
- Place
- North Dell (HS2)
- Region
- Na h-Eileanan Siar
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What we do, step by step
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 tell you how long to leave it before we go. Around North Dell, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Mention any tricky access
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
How to get a quote
We quote each job on its own, so start by telling us what you need. Simply send an email to info@mrmastic.co.uk and describe the job.
Advice
What else we do in North Dell
What affects the cost of sand mastic
Your quote is based on your job. We take into account:
- The number of rooms or windows
- The product the joint needs
- Whether there’s mould to deal with
- Whether the work is at height
The cost depends on the size of the job, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
Helping us quote
Before you ask for a quote, have a think about:
- Where the job is, and your postcode
- Roughly how big the job is
- Any previous sealing or DIY work
- What’s wrong with the joints now
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Keep sills and gutters clear so water drains away
- Leave the new mastic unpainted
- Sort the mastic before the decorators arrive
- Have rotten timber repaired before new mastic goes in
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Common problems we fix in North Dell
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
These are the problems we’re asked about most:
- Silicone on a period window that looks wrong
- Failed mastic on an exposed elevation
- Crumbling sand mastic round a window
- Old cement repairs round a window that have failed
Around North Dell, as everywhere, sand mastic is only as good as the preparation behind it.
Before booking anyone
- How long the guarantee is
- Whether they’re fully insured
- What the quote includes, VAT included or not
- How the colour is chosen
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Sand mastic in North Dell: local notes
North Dell is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Island weather, with its wind and salt spray, is tough on the mastic around older windows and doors.
Homes close to Church of Scotland include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
North Dell is about 18 miles north of Stornoway, in Na h-Eileanan Siar. Jobs in North Dell get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. North Dell is one of 87 places in Na h-Eileanan Siar where we work for sand mastic.
Our applicators cover all of HS2 for sand mastic. Nearby, we also carry out sand mastic in Cross (1 mile east), Nis (2 miles east), Ness (2 miles east), Lìonal (2 miles north-east) and Lionel (2 miles north-east). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Landmarks near North Dell
A little further out are Comunn Eachdraidh Nis (under half a mile east). Open spaces near North Dell include Loch Langavat.
FAQs for North Dell
Is North Dell within the area you cover?
Yes, we do. Our work covers the whole of Scotland, islands included, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you cover North Dell for sand mastic?
Yes, North Dell is within the area we cover. We work across all of Scotland. You can send an email to info@mrmastic.co.uk and let us know what needs doing.
Can you match the sealant colour?
Yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
Can sand mastic be painted?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Do I need permission for sand mastic on a listed building?
Your local planning authority is the one to ask. They’ll tell you if consent is needed for work to your windows.
How do I get a quote for sand mastic in North Dell?
It depends on the job, so we quote each one individually. For a quick quote, email us at info@mrmastic.co.uk and let us know what needs doing and where.
When will the new mastic be hard?
Not straight away. The skin forms first, and the full set comes later, and we’ll tell you what to expect.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Different surfaces, different methods
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.