Facade and window perimeter sealing in Haroldswick, Shetland Islands
Facade sealing for Haroldswick, from a contractor working since 2005. Fully insured and CHAS accredited.
- Hard, chalky sealant that no longer flexes
- Patch repairs that keep failing
- Damp patches beside frames after rain
Facade sealing for businesses in Haroldswick
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Facade sealing in Haroldswick
Facade sealants sit in the sun, rain and frost every day, and they wear out over time. How long a joint lasts depends on the movement it takes, its exposure, the product and how well it was installed. When it fails, the whole bead is cut away and the joint rebuilt. We work on stone and brick facade joints, window and door perimeters and shopfront frames, and the failures we’re asked to look at most are previous reseals run over old sealant and cold air coming in at window perimeters. Searching for sealant specialists in Haroldswick? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
External sealing around Haroldswick depends on dry faces and the right temperature. We build some give into the plan and agree it with the site manager.
Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Location
- Haroldswick (ZE2)
- Wider area
- Shetland Islands
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
What sets the cost
Sealant work doesn’t have a standard rate, since sites vary so much. What we take into account:
- Which sealant the job calls for
- Travel to remote or island sites
- Whether old sealant has to be cut out first
- Quantities, in metres or numbers
The specified product makes a difference, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Details that help us quote
It doesn’t need to be a full survey. A few details are enough to get going:
- Access details, including height
- Drawings or a marked-up plan, if available
- Whether the building will be occupied during the work
- A wide shot and a close-up of the area
To get a fixed quote, ring 01277 525 020 or use the quote form, telling us the site location and the nature of the job. You can also send details through our quote form.
Your questions answered
Will you travel to Haroldswick on the island?
Yes. Islands are part of our area, Haroldswick included. Ferry times and the weather set the plan, so we ask for photos and a full list first.
Can you keep pace with our programme in Haroldswick?
Yes. Send the programme and drawings, and we will plan the mastic to suit the stages. Let us know which documents your site asks for, and we will confirm them alongside the quote.
What hours do you work?
The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.
What type of sealant goes on window perimeters?
Most facade and window perimeter joints take a low-modulus neutral-cure silicone. Hybrid or MS polymer, polyurethane and polysulphide sealants suit others.
How do you choose the sealant?
A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
Are you fully insured?
Yes. We’re fully insured, including public liability cover.
How much does the work cost?
Every job gets its own fixed quote. To get one, speak to us on 01277 525 020 or use the quote form.
How a job runs
Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and move on in phases so staff and visitors can carry on around us. For a building near Haroldswick, directions, keys and a contact on the day are worth sorting early. We will confirm the plan with the fixed quote.
- We look at the joints, the drawings and the access before pricing.
- Failed sealant is cut out along its full length.
- Both faces are cleaned and, where the product needs it, primed.
- Closed-cell rod fixes the depth, and the sealant grips two sides only.
- The new sealant goes in and is tooled firmly onto both faces.
- We walk the finished joints with you before handing over.
Preparing the site
- Move anything stored against the joints
- Point out parking and an unloading spot
- Tell us your opening times and when work is allowed
Get a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call the office on 01277 525 020 or email drawings and photos.
Read more
Common problems we fix in Haroldswick
A frequent fault is a bead stuck to the joint’s rear face as well as its sides. With no backing, the sealant is restrained and rips when the facade moves.
Clients normally get in touch after noticing one or more of the following:
- Failed sealant on precast panel joints
- Previous reseals run over old sealant
- Unsightly perimeter sealant on a visible elevation
- Weathered joints at frame-to-structure perimeters
Sites around Haroldswick get mastic sealed to the drawings and the programme, nothing improvised.
What your quote should include
- How they handle RAMS and site documents
- Proof of insurance
- How the joint faces will be prepared and primed
- Which product they’ll use, and why it suits the joint
What the job involves on each surface
Coping and flashing joints
Not every coping or flashing leak is a sealant problem. We tell you if the fix is a roofing or metalwork job rather than a reseal.
Brick and stone facades
Joints in natural stone need care to avoid staining. We use a product suitable for the stone where the specification names one, and mask the edges carefully.
Should maintenance staff do it?
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Why it’s worth doing now in Haroldswick
Resealing a few window perimeters is a small job; repairing water-damaged interiors and fixings is not. Water through a failed joint rarely stays where it starts, so the real damage is often some distance away. In Scotland, wind-driven rain finds a failed joint quickly, so it’s worth renewing joints around Haroldswick before they leak.
Pricing facade joints depends on quantities, condition and access, plus any specification you’re working to. Call for a quote.
Why us?
- One phone line for London, the South East and Scotland
- Colour agreed before work starts
- Constructionline member for supplier checks
- Commercial sealant work since 2005
Take a look at what affects the cost and our accreditations.
More services for Haroldswick
Mastic packages on Haroldswick sites
Haroldswick is within about 2 miles of the coast. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, so joint design, primers and product choice deserve extra care. Building work in Haroldswick comes under the Building (Scotland) Regulations 2004 and their technical handbooks, with warrants from the local authority verifier. The mastic package follows the approved specification.
Around Haroldswick, as anywhere, a facade joint depends on its sizing, backing rod and preparation.
Haroldswick is in the Shetland Islands. We cover Haroldswick, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 63 places across the Shetland Islands fall within our area, Haroldswick among them.
Postcode districts covered here: ZE2 for facade joints. If your site is on Taftens, Nordabrake and Brakefield Crescent or close by, we can quote for facade joints. Haroldswick sits on or close to the B9087, useful when we plan access and materials. If your building is just outside Haroldswick, we cover Baltasound (3 miles south-west), Clivocast (8 miles south), Cullivoe (9 miles south-west), Houbie (14 miles south) and Camb (15 miles south-west). Where a site is remote or on an island, we plan travel and materials carefully, so include the location in your enquiry.
Near you in Haroldswick
Nearby you’ll also find Unst Heritage Centre (0.6 miles south-west). Green spaces nearby include Little Heog and Loomer Shun.