Scotland

External Mastic in Na h-Eileanan Siar

Wherever you are in Na h-Eileanan Siar, we can help with external mastic. A clear quote before we start, and a one-year guarantee.

Book external mastic in Na h-Eileanan Siar

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Towns we cover in Na h-Eileanan Siar

Sealing brickwork movement joints, render, cladding and façade joints. Pick your town below to see the details for your area, or call or email us for a quick quote.

Biggest towns in Na h-Eileanan Siar

How external mastic works in Na h-Eileanan Siar

Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. We work on façade panels, render & cladding joints and copings & trims, and people most often call us about gaps where render, brick and frames meet and moss and dirt in joints with no sealant left.

All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. It normally takes anything from a few hours to several days, depending on the building.

First, the joints are inspected and the access agreed.
We cut out the old mastic and rake out anything in the joint.
The faces are brushed clean and primed where the product requires it.
Backing rod sized to the joint goes in to set the depth.
The exterior sealant is applied, tooled and checked along its length.

What affects the price in Na h-Eileanan Siar

Leaving a failed joint generally makes the job bigger, not smaller. If you are not sure whether it needs doing, email us at info@mrmastic.co.uk for an honest opinion and a quote.

What you get with us

We are fully insured
A 12-month guarantee on all work
Rated 4.9 stars on Google
White, clear, grey or coloured to suit, where the product allows

How to get 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 will send you a clear quote before any work starts.

Near you in Stornoway

Locally, jobs take us to homes and businesses close to Neptune's Bar and Nicolson Institute, among other places. Other landmarks nearby include Western Isles Hospital (0.5 miles north) and Lewis Loom Centre (less than half a mile south-west). The countryside around Stornoway includes Loch Àirigh na Lic.

Walls and rooflines across Na h-Eileanan Siar

Our external mastic work across Na h-Eileanan Siar covers homes, blocks and business premises, from Stornoway, Tarbert and Plasterfield to the quieter places in between. Outside joints can only be sealed when they’re dry, so the work is planned around the weather.

Homes in Scotland come with their own details: harled walls, sash and case windows and, in the larger towns and cities, tenements. We work across Scotland, including Na h-Eileanan Siar. Parts of Na h-Eileanan Siar are on or near the coast, where wind-driven rain and, closer to the shore, salt air are hard on outside sealant. Walls facing the sea are generally the first to need attention.

Stornoway: For jobs in and around Stornoway, choosing the right material for each joint is as important as a tidy finish. In and around Stornoway, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.

Aftercare tips

So the new joints stay in good condition:

Do not let climbing plants root in the sealant
Check external joints each spring
Get split or bare joints resealed while the damage is small
Show decorators and builders where the movement joints are

Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.

If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.

Why it fails

Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.

Any of these means the joints need attention:

Weeds or debris growing in open joints
Sealant pulling away from one side of the joint
Old sealant gone brittle and cracked
Leaking joints around cladding and façade panels

Honest limits

A few problems are outside what sealant work can do:

Rising or penetrating damp from elsewhere in the wall
Cutting new joints into brickwork, which is building work rather than sealant work
Cracks in the bricks or render themselves, away from the joints

What happens if it’s left?

Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing.

What your quote should include

How the colour is chosen
Whether all the old sealant comes out first
What happens if they find a problem under the old sealant
What preparation is included

What affects the quote in Na h-Eileanan Siar

We quote each job individually. This is what makes a difference:

Whether old sealant or filler has to be cut out
The size of the job
Which sealant suits the joint
How many areas need sealing

The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start.

Asking for a quote

Photos by email are helpful but not essential. Please mention:

Roughly how big the job is
If someone has resealed it before
Whether it’s a home or a business
What’s wrong with the joints now

A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.

Na h-Eileanan Siar: your questions answered

Can you quote for more than one area?

Yes. Just list everything you need.

How long should I leave it?

Cure times vary by product and the temperature. Before we leave, we’ll tell you the cure time.

What information do you need?

The location, the problem and the rough size of the job. If you can, email a few photos.

Can you match the colour of my brickwork?

There’s a good range of exterior colours, including greys, browns, whites and stone tones. We pick the one that suits your wall best.

Is there a guarantee?

Yes, always. There’s a 12-month guarantee on every job, wherever you are.

Do the sealants smell?

It depends on the product. Some smell for a while, some hardly at all.

Do you seal joints where cladding meets other materials?

Yes. Joints between dissimilar materials are a big part of external work. The sealant is chosen to bond to both sides, primed where needed.