The Mastic Doctor team standing beside their branded vans outside an office building
Shetland Islands · Scotland

Mastic sealing for building owners and managing agents in Sandwick, Shetland Islands

Mastic sealing in Sandwick, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Open joints in brickwork or panels
  • Damp patches beside frames
  • Worn sealant at communal door frames
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Mastic sealing for businesses in Sandwick

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Mastic sealing in Sandwick

We diagnose before we prescribe: what has failed, what caused it and whether new sealant will actually solve it. Failed mastic is stripped, the faces taken back to sound material, primed where the manufacturer specifies and resealed and backing rod used wherever a joint is deep. If you have old repairs sealed over failed mastic and the same joint failures repeated across a portfolio, we can help, whatever the surface. A single leaking joint is often how a building in Sandwick first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Around Sandwick, outside mastic waits for dry weather and the right temperature. We agree a window with some flexibility.

Work we carry out comes with a 12-month guarantee. If an installation problem shows up, speak to us on 01277 525 020 or send details through our quote form and we’ll arrange a return visit.

Where
Sandwick (ZE2)
Wider area
Shetland Islands
Cover
A 12-month guarantee
Quote
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Common problems we fix in Sandwick

Topping up old mastic is a common shortcut. New sealant won’t grip failed sealant and the repair soon fails.

Things that typically lead to an enquiry:

  • Worn sealant at communal door frames
  • Repeated reactive repairs to the same buildings
  • Open joints in brickwork or panels
  • Water getting in round frames after rain

Wherever your building is in or near Sandwick, we look at the whole elevation before quoting, so you know what needs doing now.

Questions to ask before you book

  • How long is the guarantee, and what does it include?
  • What level of public liability insurance do they hold?
  • Can the work be phased to keep areas open?
  • Will RAMS and insurance details be available?

Choosing a commercial sealant contractor

General trades versus a specialist

Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Questions we’re asked in Sandwick

Will you travel to Sandwick on the island?

Yes. Islands are part of our area, Sandwick included. We plan island jobs around the ferry and the forecast, and bring everything the job needs on the first crossing.

Our building in Sandwick is near the coast: does that change the sealant?

It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.

How soon can the area be used again?

We will confirm how long the chosen product needs to cure, and sign any area that should be left alone.

Do you seal on top of existing 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 do I request a quote?

It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.

Can you work to our specification?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.

What will the job cost?

That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote.

For owners and agents in Sandwick

The sea is no more than about 1 mile from Sandwick. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first. For an island location such as Sandwick, work is planned around ferry crossings and the weather. Send photographs and addresses so every building can be covered on as few trips as possible.

For owners and agents with buildings in or around Sandwick, block-wide mastic programmes deal with frames and external joints of the same age together.

Sandwick is about 14 miles north of Lerwick, in the Shetland Islands. Anywhere in ZE2, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 63 places in the Shetland Islands, large and small.

We take on mastic joints across the ZE2 postcode area, whatever the building. Streets here include Rocky Road, Saeter and Harlsdale. Close to Sandwick, our area also takes in Clate (1 mile south), Symbister (1 mile north-east), Hamister (1 mile north), Huxter (1 mile east) and Tripwell (2 miles north-east). A short drive away, we cover Lerwick (14 miles south), Sound (14 miles south) and Brae (12 miles west). Where a site is remote or on an island, travel and materials need planning ahead, so include the location in your enquiry.

Local landmarks in Sandwick

For a walk, there’s Ward of Clett and Loch of Sandwick.

Map of Sandwick © OpenStreetMap contributors

For managing agents and facilities managers

For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sandwick can form part of a wider programme.

What sealant work can’t fix

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • Misted or failed double-glazed units
  • Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
  • Leaks through the frame itself rather than the perimeter

If you are not sure, just phone 01277 525 020 or email the details over and we will give you a straight answer before you book.

Where we work in Sandwick

  • Communal entrances and stairwells
  • Balcony and threshold joints
  • Shopfronts below residential blocks
  • External wall and movement joints
  • Window and door perimeters on blocks
  • Communal kitchens and washrooms

Our process

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, and the work typically takes one or more days per building, depending on the joint lengths and the access. Jobs near Sandwick are often grouped with others in the same area, to make the most of each trip. Tell us how flexible your dates are.

  1. A building-by-building inspection lists the failed joints.
  2. You get a fixed quote, per block or for the whole programme.
  3. We agree the programme and dates with you.
  4. Old mastic is removed and the joint faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. We check the finished work and confirm the guarantee.

What we need from you

  • Warn occupants and staff about the work
  • Tell us which areas need to stay in use
  • Send any specification or drawings in advance

Quotes

Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. To get it moving, give us a call on 01277 525 020 or send details through our quote form.

Get a price

Related advice

Keeping the joints sound

After handover, a little attention goes a long way:

  • Keep a record of when each building was resealed
  • Prioritise elevations facing the weather
  • Avoid piecemeal callouts where you can
  • List the paperwork your organisation requires when you send details

If a joint we sealed fails within 12 months, tell us and we’ll look at it. After that, regular inspection keeps the programme on track.

Joints on a building age together so a single failure is a sign to check the rest. Doing them together saves going back again and again.

Accreditations

Trusted. Accredited. Insured.