Na h-Eileanan Siar · Scotland
External Mastic in Newmarket
Movement joints in Newmarket need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Damp patches traced to an open external joint
Looking after it afterwards
To keep the joints looking good and working properly:
- Tell anyone working on the walls about the movement joints
- Don’t let climbing plants root in the sealant
- Ask before painting over external sealant
- Never let anyone fill a movement joint with mortar
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
About our external mastic in Newmarket
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where a rigid filler would soon crack. We work on joints between brick and frames, brickwork movement joints and render & cladding joints, and the jobs we see most are leaking joints around cladding and façade panels and rigid filler in a joint that should flex.
Outside joints can only be sealed when they’re dry, so work in Newmarket depends on the weather. Let us know about access to every wall and roofline.
The work is covered for a year after we finish. If anything isn’t right with it, drop us a line at info@mrmastic.co.uk.
- Location
- Newmarket (HS2)
- Region
- Na h-Eileanan Siar
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
How the job changes by surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joint sealant has to cope with frequent movement. We choose the product to suit.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Quotes for external mastic in Newmarket
We quote each job individually. This is what makes a difference:
- Mould in or behind the old joints
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Any previous sealing or DIY work
- The type of property
- Roughly how big the job is
- Photos by email, if that’s easy
Getting a quote is simple: tell us what needs doing and where and its rough size. Photos by email help us understand the job.
More services for Newmarket
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Signs you need external mastic in Newmarket
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, and it tears off the sides.
The problems people normally mention when they call are:
- Panel joints letting water in
- Hard, crazed mastic that has stopped moving
- Water getting into walls through failed joints
- Movement joints filled with mortar instead of sealant
For jobs in and around Newmarket, choosing the right material for each joint is as important as a tidy finish.
What to look for in a quote
- How much experience the applicator has
- What the quote includes, VAT included or not
- What the cure time is
- Which colour the sealant will be
Common questions in Newmarket
Is Newmarket within the area you cover?
Yes, we do. Our work covers the whole of Scotland, islands included, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Newmarket for external mastic?
Yes, Newmarket is within the area we cover. Our work covers the whole of Scotland. You can email us at info@mrmastic.co.uk and let us know what needs doing.
Is the work guaranteed?
Yes. Every job comes with our 12-month guarantee.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher ones, send details and we’ll confirm the access.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will tell you what we’re using.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Do you have insurance?
Yes. We’re fully insured for every job we do.
What happens on the day
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. Most jobs take anything from a few hours to several days, depending on the building. In smaller Scottish places, parking is generally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- 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.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
- Mention any tricky access
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work and send you a clear quote.
Advice
When it isn’t the sealant
It helps to know what we can’t do too:
- Damp that isn’t coming from the joint
- Cracked brickwork or render that needs a builder or plasterer
- Walls that need new movement joints cut into them
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
Joints and surfaces we work on
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Façade panels
Outside joints around Newmarket
Newmarket 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. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Newmarket is in the west of Scotland, which is wetter than the east, which means movement joints and outside wall joints has to cope with a lot of rain.
In and around Newmarket, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Newmarket is about 1 mile north of Stornoway, in Na h-Eileanan Siar. Across the HS2 area, we can carry out external mastic at your property. 87 places in Na h-Eileanan Siar are on our list.
Here we cover the HS2 postcode area for external mastic. External mastic is available to properties on Bakers Road and Riverview. Being close to the A857, Newmarket is easy for our applicators to reach for external mastic. Neighbouring places we cover for external mastic include Laxdale (1 mile south), Stornoway (1 mile south), Steinis (2 miles south-east), Plasterfield (2 miles south-east) and Tong (2 miles north-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 Newmarket
A little further out are Western Isles Hospital (0.9 miles south) and Lewis Loom Centre (1.5 miles south). For a walk, there’s Ben Barvas and Loch Àirigh na Lic.