Na h-Eileanan Siar · Scotland

Sand mastic for sash & case windows in Loch Baghasdail, Na h-Eileanan Siar

Our applicators work in Loch Baghasdail on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.

  • Cracked mastic round a front door frame
  • A silicone bead on a sash window that spoils the look
  • Wind and rain getting in round a sash window

Book sand mastic in Loch Baghasdail

Your questions about sand mastic in Loch Baghasdail

Is Loch Baghasdail within the area you cover?

Yes, Loch Baghasdail is covered. We work across all of Scotland, islands included, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.

Is sand mastic in a coastal place like Loch Baghasdail 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.

Where are you based?

Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.

Do I need to be at home?

It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.

Do you remove the old sealant?

Yes. All of the old material is cut out and the joint cleaned.

How long does sand mastic take?

It depends on the size of the job, but most jobs take anything from a few hours to a full day, depending on how many windows. We’ll tell you when we quote.

Do you offer different sealant colours?

Yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.

Can new sealant go over the old?

No. The old sealant always comes out first, so the new sealant bonds properly.

How we handle sand mastic in Loch Baghasdail

If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. Typical jobs include draughty sash windows at the surround and mastic dropping out of the joint, on tenement windows, sash and case windows and period & listed homes.

Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Exposed frames and sills take the full force of wind-driven rain.

Every job is covered by a 12-month guarantee, wherever you are in Na h-Eileanan Siar.

Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter
Place
Loch Baghasdail (HS8)
Region
Na h-Eileanan Siar
Guarantee
One year on every job
Price
Quoted before any work starts
Email
info@mrmastic.co.uk
Last updated
26 October 2026

What the job involves on each surface

Stone surrounds

The stone is treated with care when the old mastic comes out.

Sash and case windows

Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.

DIY versus a professional finish

Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.

What affects the cost of sand mastic

Every job gets its own quote. These are the things that affect it:

  • Working hours on commercial sites
  • How many rooms, windows or areas are involved
  • The product the joint needs
  • Whether the work is at height

What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first.

Helping us quote

Photos help, but a description is a good start. Please mention:

  • Access, such as stairs, a lift or height
  • If it’s domestic, commercial or a hotel
  • What’s wrong with the joints now
  • Roughly how big the job is

Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will come back to you with a quote.

For landlords and businesses

A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.

Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we’re fully insured.

Why act early in Loch Baghasdail

Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.

A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.

Why us?

  • Domestic, commercial and hotel work
  • Rated 4.9 stars on Google
  • Over 20 years’ experience
  • Every job guaranteed for a year

Take a look at what affects the cost or what customers say.

When something else is needed

Honest advice matters more to us than a booking, so here’s what new sealant will not do:

  • Cracked or broken glass
  • Whether work needs listed building consent
  • Rotten sashes, sills or window boxes (a joiner’s job)

Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly before you book.

What we seal

  • Stone surrounds
  • Sash and case windows
  • Tenement windows
  • Timber door frames
  • Period & listed homes
  • Brick reveals

What we do, step by step

There’s no need to move everything out, just the space around the work. We protect the rest, and the job takes a few hours for a single window, longer for several for a typical job. Around Loch Baghasdail, distance and access matter more than parking. Tell us how to find the property and how to reach the work.

  1. First, we look at the surrounds with you and agree what needs doing.
  2. We rake out the old mastic and clean the joint.
  3. Deep voids are packed so the mastic is the right thickness.
  4. We mix the sand mastic and apply it by hand, shaping it to the joint.
  5. The finish is dressed so it sits neatly against the stone or brick.

Before we arrive

  • Move anything stored near the joints
  • Tell us about any water getting in
  • Tell us about any previous sealing or DIY attempts

Ask for a quote

Want a quote for sand mastic? Please send an email to info@mrmastic.co.uk and tell us about the job. We will explain what we’d do and give you a clear quote before any work starts.

Ask for a quote

Related advice

Windows and doors in Loch Baghasdail

Loch Baghasdail is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.

Around Loch Baghasdail, as everywhere, sand mastic is only as good as the preparation behind it. For jobs in and around Loch Baghasdail, choosing the right material for each joint is as important as a tidy finish.

Loch Baghasdail (Gaelic: Lochboisdale) is in Na h-Eileanan Siar. Every kind of property in Loch Baghasdail is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Loch Baghasdail is one of 87 places in Na h-Eileanan Siar where we work.

All of HS8 is covered for sand mastic. You’ll find streets such as Kenneth Terrace, Slighe Choinnich and Braehead, all of which we cover. Close by, we work in Lochboisdale (1 mile south), Dalabrog (2 miles west), Rubha Ban (5 miles south), Eòlaigearraidh (9 miles south-west) and Cuidhir (12 miles south-west). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.

Landmarks near Loch Baghasdail

A little further out are Calvay Castle (1.8 miles south-east). For a walk, there’s Beinn Ruigh Choinnich and Loch Stulaval.

Map of Loch Baghasdail © OpenStreetMap contributors
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job