Na h-Eileanan Siar · Scotland
Shulishader External Mastic
External mastic for Shulishader, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
- Weeds or debris growing in open joints
External mastic for homes and businesses in Shulishader
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. We are often asked to deal with panel joints letting water in and sealant that has lost its bond to the brick or render, across concrete & block, façade panels and brickwork movement joints.
Outside joints can only be sealed when they’re dry, so work in Shulishader depends on the weather. Let us know about access to every wall and roofline.
Big or small, you get the same 12-month guarantee in Shulishader and across Na h-Eileanan Siar.
- Place
- Shulishader (HS2)
- Region
- Na h-Eileanan Siar
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
What external mastic looks like in Shulishader
Shulishader is close to 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. On the islands, wind and salt spray are hard on outside sealant.
For site and facilities teams at buildings such as Aird Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Around Shulishader, as everywhere, external mastic is only as good as the preparation behind it.
Shulishader is about 7 miles east of Stornoway, in Na h-Eileanan Siar. Jobs in Shulishader get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Na h-Eileanan Siar, we cover 87 places, Shulishader among them.
We cover every part of the HS2 postcode area for external mastic. We also cover Sulaisiadar (1 mile south-west), Aird (1 mile east), Garrabost (1 mile south-west), Portvoller (2 miles north-east) and Pabail Uarach (2 miles south). If you are somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Local landmarks in Shulishader
Open spaces near Shulishader include Loch an Tiumpan.
Work for landlords, hotels and businesses
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Shulishader: your questions answered
Is Shulishader in your area for external mastic?
Yes, Shulishader is within the area we cover. We work across all of Scotland. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear quote.
Does the coastal weather in Shulishader affect outside sealant?
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.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Is there a guarantee?
Yes. All our work carries a 12-month guarantee.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
How it works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes anything from a few hours to several days, depending on the building, and the area is left clean. Around Shulishader, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Tell us about any water getting in
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Asking for a quote is easy: let us know the job and the location. A few photos by email make the job easier to understand, and we will take it from there.
Related advice
What the job involves on each surface
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it, or one the system allows. Tell us what the building has when you get in touch.
Why act early in Shulishader
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
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. Your quote takes all of that into account.
Why book with us
- Tidy, careful work
- ARBOMaster approved applicator
- Colour picked to suit the job
- A 12-month guarantee on all work
See our cost guide and what customers say.
What we cannot put right
It helps to know what we can’t do too:
- Failed render or damaged cladding panels
- Cutting new joints into brickwork, which is building work rather than sealant work
- Damp that isn’t coming from the joint
If you’re not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer before you book.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Copings & trims
Quotes for external mastic in Shulishader
Every job gets its own quote. These are the things that affect it:
- Mould in or behind the old joints
- The type of sealant required
- Access and height
- The number and length of the joints
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Helping us quote
When you call or email, these details help:
- The type of property
- A few pictures by email, if you can
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will explain what’s involved.