Na h-Eileanan Siar · Scotland
External Mastic in Branahuie
External mastic for Branahuie, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Rigid filler in a joint that should flex
- Brick movement joints where the sealant has split
- Plants rooting in failed movement joints
How we handle external mastic in Branahuie
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. If you’re dealing with cracked joints where brick meets render or frames and joints pointed up with cement by mistake, we can put it right.
Outside joints can only be sealed when they’re dry, so work in Branahuie depends on the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
Big or small, you get the same one-year guarantee.
- Where
- Branahuie (HS2)
- Region
- Na h-Eileanan Siar
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY sealant or a professional job?
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.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Your questions about external mastic in Branahuie
Does living near the coast affect external mastic in Branahuie?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do you cover Branahuie for external mastic?
Yes. Our work covers the whole of Scotland, and Branahuie is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear quote.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Are you insured?
Yes. We are fully insured for domestic and commercial work.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. We pick a colour that works with both materials.
How long should I leave it?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
Is it OK to fill a movement joint with cement?
No. Cement or mortar can’t stretch. If it has already been filled, we can usually cut it out and reseal it.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Structural movement, which needs a surveyor or engineer
- Adding movement joints to masonry that has none
- Loose or hollow render, which needs re-rendering
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
Joints and surfaces we work on
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Copings & trims
- Concrete & block
- Brickwork movement joints
Outside joints around Branahuie
Branahuie is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Island weather, with its wind and salt spray, is tough on movement joints and outside wall joints.
In and around Branahuie, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. Whether the job is in Branahuie itself or nearby, the right material for each joint matters as much as a neat finish.
Branahuie is about 2 miles east of Stornoway, in Na h-Eileanan Siar. Whether you are in the middle of Branahuie or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Branahuie is one of 87 towns and villages in Na h-Eileanan Siar we cover.
Postcode districts we cover here for external mastic: HS2. Other places close to Branahuie include Bràigh na h-Aoidhe (1 mile south-east), Sanndabhaig (1 mile west), Sandwick (1 mile west), Steinis (1 mile north-west) and Plasterfield (1 mile west). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
What’s near Branahuie
Nearby you’ll also find Western Isles Hospital (2.6 miles west) and Lewis Loom Centre (2.6 miles west). Green spaces nearby include Loch Àirigh na Lic.
How to look after the new joints
To keep the joints looking good and working properly:
- Keep movement joints as flexible joints, not mortar
- Check external joints each spring
- Avoid pressure-washing directly into sealant joints
- Keep soil, plants and ivy away from the joints
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Nearby places to Branahuie
Also in Branahuie
Work for landlords, hotels 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.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
What the job involves on each surface
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so neither cracks the other.
Quotes for external mastic in Branahuie
For a quick quote, just ask. The main things that affect it are:
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- Working hours on commercial sites
- The amount of work
Leaving a failed joint normally makes the job bigger, not smaller. If you are unsure, drop us a line at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- Whether it has been sealed before
- The address or postcode of the job
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.
The process
On the day, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before we start. The work generally takes a few hours for a handful of joints, longer for a whole elevation. For a place like Branahuie, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Tell us about any water getting in
- Move anything stored near the joints
- Keep children and pets away from the work area
Getting a quote
Want a quote for external mastic? Please email us at info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.