Construction Mastic in Lerwick
Sealant work in Lerwick for main contractors, managing agents and facilities managers: mastic packages for new-build and refurbishment projects, with a fixed quote first.
- Bath and shower joints scraped during the final clean
- Early adhesion failures on new external joints
- Missed perimeter joints on a new elevation
Construction mastic for businesses in Lerwick
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Your questions answered
Does a coastal location like Lerwick affect which sealant is used?
It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We check the specified product suits the exposure and pay close attention to preparation.
Does your area include sites such as North Ness Business Park, near Lerwick?
Yes, sites like North Ness Business Park are within our area, along with the rest of Lerwick. A few photographs and the unit address let us price the work.
Can weather delay the job?
Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day, and sign any area that should be left alone.
Do you cover Lerwick?
Yes. We cover Lerwick and the rest of the Shetland Islands, within our coverage of Greater London, South East England and Scotland. To discuss a job, phone 01277 525 020 or email the details over.
How long does a job like this take?
The duration is planned around your programme and the access we are given. You will have an expected duration with the quote.
Do you use the sealant named in the specification?
We work to the specification and the manufacturer’s installation guidance. Primers, backing and joint depth follow what the manufacturer sets out.
How we handle construction mastic in Lerwick
Mastic follows everyone else, which means it absorbs every delay upstream. The sequence is set with the site team and updated as plots or floors are handed over, so applicators arrive when areas are genuinely ready. That keeps the work right first time and saves rework. Site teams most often ask us about oversized or tapered gaps around new frames and sanitary sealant damaged by following trades, on cladding and panel joints, window and door perimeters and internal decorators’ caulk. Searching for sealant specialists in Lerwick? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Construction around smaller Scottish places like Lerwick is often one-off schemes: a school, a health centre, a hotel extension or a few houses. The mastic still needs to suit exposed elevations and Scottish weather.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Where
- Lerwick (ZE1)
- Wider area
- Shetland Islands
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
What happens if it’s left?
Sealing over damaged or contaminated new joints might save a day, but it rarely lasts. New sealant laid on old or dirty sealant has nothing to bond to and the defect reappears in the defects period. Damaged joints are removed and resealed from clean faces. Around smaller places like Lerwick, halls, stores and seasonal buildings may not be checked often, giving water time to get in. Early resealing prevents it.
The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site requirements come into it too.
Why us?
- Colours confirmed for the specified product
- One phone line for London, the South East and Scotland
- Health and safety: CHAS accredited
- Work to your specification and the manufacturer’s guidance
Read what affects the cost or our accreditations and insurance.
Diagnose, treat, sign off
On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, and the work normally takes whatever the programme allows, since the work follows the trades as areas are released. Tell us who will meet us and how to get in at your building near Lerwick. That goes into the plan alongside the quote.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- Snags are cleared and the package signed off with our 12-month guarantee.
What we need from you
- Confirm the product named in the specification
- Send asbestos survey details if the building is pre-2000
- Tell us which areas need to stay in use
Ask for a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.
Advice
Facades, frames and programmes in Lerwick
With the shore within about 1 mile, Lerwick counts as a coastal location. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, so we check the specified product suits the exposure before the first bead. Lerwick is in the east of Scotland, which is drier than the west. Frosty spells still affect external mastic dates. We agree external dates with the site team and keep internal work ready.
New wings at hospitals like Gilbert Bain Hospital, less than half a mile south of Lerwick, bring long runs of window and panel joints to seal. Work at a hotel such as The Lerwick Hotel, under half a mile south-east of Lerwick, tends to be programmed around bookings, mastic included. New units and refits on sites such as North Ness Business Park, 0.5 miles to the north-east of Lerwick, need their panel and perimeter joints sealed to the specification.
Lerwick is in the Shetland Islands. Anywhere in ZE1, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Our the Shetland Islands coverage takes in 63 places, from busy centres to rural villages.
Commercial sites across ZE1 are covered for mastic packages. For a building on High Street, Market Street and Church Road or nearby, send details and we’ll quote for mastic packages. Main routes into Lerwick include the A969 and A970, which helps when planning parking and deliveries for the job. Close to Lerwick, our area also takes in Sound (1 mile south-west), Gremista (1 mile north), Heogan (1 mile north-east), Grindiscol (2 miles south-east) and Gunnista (2 miles north-east). Lerwick is one of the busier places in the Shetland Islands, and we take on mastic packages for its commercial and public buildings. Remote and island addresses take more planning, from travel and ferries to the weather, so mention the location when you speak to us on 01277 525 020 or email a schedule or drawings.
Near you in Lerwick
We work on buildings around Gilbertson Park and Grand Hotel, among other places. Well-known places in the area include Gilbert Bain Hospital (under half a mile south) and Shetland Museum (under half a mile north-east). Not far away are Setter Hill and Clickimin Loch.
When to bring in a specialist
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
What sealant work can’t fix
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Specifying the product where the designer hasn’t
- Deciding which fire-stopping product a penetration needs
- Damage to finishes by other trades after we’ve sealed
If you’re not sure, just ring 01277 525 020 or email us and we will give you a straight answer before you book.
Surfaces we seal
- Internal decorators’ caulk
- Brick and block movement joints
- Sanitary and kitchen joints
- Window and door perimeters
- Floor and skirting junctions
- Cladding and panel joints
What the job involves on each surface
Kitchens and utility areas
Commercial kitchens often need hygienic or food-safe sealants. We follow the specification and seal to a smooth, cleanable finish.
Bathrooms, en suites and washrooms
Sanitary joints around baths, showers, basins and WCs need anti-mould sanitary silicone. Joints are cleaned, sealed and tooled neatly, and any bath is loaded with water first where that’s the agreed method.
Also near Lerwick
Also in Lerwick
Keeping the joints sound
Regular inspection catches problems early. Specifically:
- Ask installers to correct oversized gaps first
- Get the mastic subcontractor involved early in the programme
- Brief the final clean team to avoid blades near sealant
- Allow flexibility for external sealing in damp or cold weather
Expect some settlement in the first months. Flexible sealants in the right joints handle normal movement. We can advise if a joint needs a different product.
In wet areas, a weak sanitary joint shows up quickly once the building is occupied. Leaks behind showers and basins damage finishes and floors, leaving the remedial work to the contractor. Proper preparation, with the right silicone first time, keeps it off the defects list.