Na h-Eileanan Siar · Scotland
Shulishader Window Mastic
Window and door frames in Shulishader need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Mastic that has split away from the wall
- Draughty joints inside around the window
- Rushed sealant from a window installation
Landlord and commercial work in Shulishader
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
About our window mastic in Shulishader
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. We work on window sills, patio & French doors and uPVC windows, and people most often call us about white mastic on grey or black frames and cracked or shrunken mastic around the frame.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
Every job comes with a one-year guarantee.
- Where
- Shulishader (HS2)
- Wider area
- Na h-Eileanan Siar
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What we do, step by step
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. The job normally takes a few hours for a handful of frames, longer for a whole house. Outside jobs in Shulishader need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
Ask for a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.
Read more
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Keep solvents and bleach off the sealant
- Keep timber frames painted
- Avoid blasting the frames with a pressure washer
- Wipe condensation off the frames
Try not to touch the new joint while it cures, for as long as we advise. Keep jet washers away from the frames.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
Also near Shulishader
More services for Shulishader
What the job involves on each surface
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall and tooled smooth.
Timber windows & doors
Timber moves with moisture as well as heat, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
What affects the cost of window mastic
Every job gets its own quote. This is what makes a difference:
- The type of sealant required
- The size of the job
- Any working-time requirements on site
- Mould in or behind the old joints
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and send you a clear quote before work begins.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- Where the job is, and your postcode
- The rough size of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and send you a clear quote.
Common problems we fix in Shulishader
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
Any of these means the joints need attention:
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
- Mastic that is falling out in pieces
- Mastic that has split away from the wall
Schools such as Aird Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Before you book anyone
- Are they insured?
- What the cure time is
- How the joint is cleaned and prepared
- Whether all the old sealant comes out first
Leave it or put it right?
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
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 play a part, and we’ll explain the quote if you ask.
Why Shulishader clients choose us
- Full insurance on every job
- Anti-fungal silicone where joints get wet
- More than 20 years in sealant work
- Domestic, commercial and hotel work
Take a look at what affects the cost and customer reviews.
Shulishader: your questions answered
Does the coastal weather in Shulishader affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are generally the first to need attention.
Do you cover smaller places like Shulishader?
Yes. Shulishader is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland, including the islands, where work is planned around ferry crossings. Just mention lanes, gates or anything else about the route when you book.
Is the new sealant paintable?
Not normally, if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Will resealing my frames help with draughts?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply send an email to info@mrmastic.co.uk.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
How do I get a quote for window mastic in Shulishader?
It depends on the job, so we quote each one individually. To get one, send an email to info@mrmastic.co.uk and let us know what needs doing and where.
Window mastic in Shulishader: local notes
Shulishader is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around window and door frames, 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.
In and around Shulishader, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
Shulishader is about 7 miles east of Stornoway, in Na h-Eileanan Siar. Whether you are in the middle of Shulishader or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 87 places across Na h-Eileanan Siar, large and small.
We work across the HS2 postcode area for window mastic and the streets around it. Neighbouring places we cover for window mastic include 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’re somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Landmarks near Shulishader
Green spaces nearby include Loch an Tiumpan.