Steinis mastic sealing
Work needed on a mastic joint in Steinis? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Movement joints with sealant missing
- Repeated reactive repairs to the same buildings
- Worn sealant at communal door frames
Need mastic sealing in Steinis?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Mastic sealing for commercial buildings in Steinis
Blocks are lived in, so access and disruption have to be thought through. The sequence, the areas and the dates are settled with you, giving you what you need to notify residents. Entrances and stairwells are kept in use throughout. We work on shopfronts below residential blocks, communal entrances and stairwells and balcony and threshold joints, and the usual reasons a site gets in touch are communal area joints that look neglected and no planned programme for sealant. One point of contact handles commercial sealant work in Steinis from the first photos to the final walk-round, whether it’s one building or several.
Outside mastic in Scotland needs dry joints and the right temperature, so work around Steinis is planned with the forecast. Programmes allow for the weather.
Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.
- Place
- Steinis (HS2)
- Wider area
- Na h-Eileanan Siar
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Aftercare for building managers
Keep the joints in good shape with a few simple steps:
- Reduce knocks to communal area joints
- Check sealant joints during planned building inspections
- Share your contractor requirements early
- Avoid piecemeal callouts where you can
If paintable sealant was used, decoration can follow once it has cured. Non-paintable silicone shouldn’t be painted over.
Water getting in round frames can damage plaster, decoration and the frames themselves. Resealing early keeps the job small.
When it isn’t the sealant
Honesty saves time and money. Fresh joints won’t solve:
- Masonry that has broken away beside the joint
- Leaks through the frame itself rather than the perimeter
- Glazing that needs replacing
If in doubt, call the office on 01277 525 020 or send photos by email and we’ll say what we think.
Surfaces we seal
- Balcony and threshold joints
- Shopfronts below residential blocks
- External wall and movement joints
- Window and door perimeters on blocks
- Communal kitchens and washrooms
- Communal entrances and stairwells
Common questions from Steinis clients
Can you take on a job in Steinis, on the island?
Yes, Steinis is within the area we cover. Our area covers all of Scotland, cities, towns and islands alike. We plan island jobs around the ferry and the forecast, and bring everything the job needs on the first crossing.
Can you work at a site such as Parkend Industrial Estate, by Steinis?
Yes. We cover Steinis and the area around it, including industrial estates, business parks and retail parks such as Parkend Industrial Estate. Send details of the unit and the work through our quote form for a quick quote.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
How long will the new sealant last?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
Do you work for managing agents and housing associations?
We do. Managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios are our main clients for this work, and we quote building by building or as a programme.
Do you guarantee the mastic work?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
What if the old mastic contains asbestos?
Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
Building owners, agents and FMs in Steinis
Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
Mastic sealing around Steinis: how the place shapes the job
Steinis sits close to the coast, within about 1 mile. On buildings near the shore, the side facing the weather typically needs its mastic renewed first, so it’s worth inspecting those sides more often. For an island location such as Steinis, work is planned around ferry crossings and the weather. Send photos and addresses so every building can be covered on as few trips as possible.
Landlords with units on estates such as Parkend Industrial Estate (to the south of Steinis) can bring frame, door and external mastic across several units into one programme.
Steinis is in Na h-Eileanan Siar. Anywhere in HS2, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 87 places in Na h-Eileanan Siar, from busy centres to rural villages.
Anyone looking for mastic sealing in HS2 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Just outside Steinis, we also work in Plasterfield (1 mile south-west), Sandwick (1 mile south), Sanndabhaig (1 mile south), Stornoway (1 mile west) and Branahuie (1 mile south-east). Where a site is remote or on an island, travel and materials need planning ahead, so include the location in your enquiry.
Around Steinis
Other landmarks nearby include Western Isles Hospital (1.3 miles west) and Lewis Loom Centre (1.5 miles west). Open spaces near Steinis include Loch Àirigh na Lic.
Diagnose, treat, sign off
In a busy building, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then reopened once the sealant allows before we move to the next. Where we can, we combine work around Steinis with other jobs nearby, to make the most of each trip. Let us know if your dates have any give.
- Each block or building is walked and the failed joints recorded with the likely cause.
- You get a fixed quote, priced per building where that helps your budgeting.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- We remove the old mastic completely and clean the joint faces back.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
Before we start on site
- Warn occupants and staff about the work
- Flag any permit to work we’ll need
- Send any specification or drawings in advance
Quotes
The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or speak to us on 01277 525 020 or send photos by email to discuss it first.
Advice
What we are called out for in Steinis
Previous repairs often sealed new mastic over old. New sealant won’t grip failed sealant and the repair soon fails.
Common reasons buildings call us in:
- Brittle perimeter mastic across a building
- A mix of products and colours from past repairs
- Worn sealant at communal door frames
- Movement joints with sealant missing
Owners near Steinis can renew frame and external mastic block by block on one programme.
Before you book anyone
- The terms of the workmanship guarantee
- Will CSCS-carded applicators be on site?
- Proof of insurance
- How the joint faces will be prepared and primed
Site staff or a sealant specialist?
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.