The Mastic Doctor team standing beside their branded vans outside an office building
Na h-Eileanan Siar · Scotland

Tong mastic sealing

Mastic sealing for building owners, managing agents and housing associations in Tong and across Na h-Eileanan Siar. CHAS accredited and fully insured, with a 12-month guarantee.

  • Communal area joints that look neglected
  • Damp patches beside frames
  • Movement joints with sealant missing
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS accredited
£5m PL insurance

Mastic sealing for businesses in Tong

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

Our process

We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact. For work around Tong, we aim for one trip, which is why we ask for photographs and a full list first. Outside work also needs a suitable weather window.

  1. First we look at the mastic on each building and note what needs replacing.
  2. You get a fixed quote, priced per building where that helps your budgeting.
  3. The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
  4. Old sealant is stripped and each face prepared back to firm material.
  5. Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Preparing the site

  • Flag any permit to work we’ll need
  • Tell us your opening times and when work is allowed
  • Send asbestos survey details if the building is pre-2000

Ask for a quote

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.

Get a quick quote

Advice

Mastic sealing for commercial buildings in Tong

Managing agents and housing associations normally need paperwork before anyone starts. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are a Constructionline member and CHAS accredited, and we carry public liability insurance. Site teams most often ask us about brittle perimeter mastic across a building and the same joint failures repeated across a portfolio, on window and door perimeters on blocks, shopfronts below residential blocks and balcony and threshold joints. Whoever orders the work in Tong, the brief is typically the same: a clear scope, tidy work and joints that don’t fail again.

In smaller Scottish places like Tong, managed property is mostly small blocks, sheltered housing, hotels and community buildings. Frames on exposed elevations are where mastic typically fails first.

We stand by our work: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.

Location
Tong (HS2)
Wider area
Na h-Eileanan Siar
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Honest limits

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Roof leaks, gutters or failed flashings that aren’t sealant joints
  • Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
  • Glazing that needs replacing

Not sure which it is? You can call 01277 525 020 or send details through our quote form and we’ll tell you honestly.

Joints and surfaces we work on

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

Building owners, agents and FMs in Tong

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, and each stage is agreed with your contact.

Building owners and managing agents use us on sealant work across single buildings or whole portfolios around Tong. One quote can cover more than one site, so there’s one set of paperwork to deal with.

Site staff or a sealant specialist?

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.

Surface by surface

Planned maintenance

Planned resealing replaces emergency callouts and keeps budgets predictable.

Tenement and older buildings

Stone needs a neutral-cure product, so we pick a grade that won’t mark it.

What we are called out for in Tong

UV and rain age external sealant. It stiffens, stops stretching and cracks most of all on the sunniest and most exposed elevations.

If one of these sounds familiar, it’s time for a closer look:

  • Movement joints with sealant missing
  • Leaks at window and door perimeters
  • Mastic failing across several blocks on an estate
  • Cracked, hardened mastic round windows on a block

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

Before you book anyone

  • Will failed sealant be removed rather than covered?
  • Whether primer will be used where the manufacturer specifies it
  • Which product they’ll use, and why it suits the joint
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?

Questions to ask before you appoint anyone

For owners and agents in Tong

Tong lies within about 1 mile of the sea. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints. Work on Tong has to fit the ferry timetable and the forecast. Send photographs and addresses so every building can be covered on as few trips as possible.

For owners of several units at places like Gleann Seileach Business Park, 2.8 miles to the south-west of Tong, one programme can deal with frame and external mastic across the lot.

Tong (Gaelic: Tunga) is in Na h-Eileanan Siar. We cover commercial sites throughout Tong, whether it’s a single job or part of a planned programme. Tong is one of 87 places we cover in Na h-Eileanan Siar for mastic joints.

Work on mastic joints is covered throughout HS2, for business premises of every kind. We cover commercial and managed buildings on Milkinghill Park and Barraid Mhicille Mhoire and the roads nearby. Nearby places we also cover include Aird Tong (1 mile east), Upper Coll (1 mile north-east), Newmarket (2 miles south-west), Steinis (2 miles south) and Laxdale (2 miles south-west). For island and remote sites, we plan travel and materials carefully, so include the location in your enquiry.

Local landmarks in Tong

A little further out are Lewis Loom Centre (2.9 miles south-west) and Western Isles Hospital (2.3 miles south-west). For a walk, there’s Loch Àirigh na Lic.

Map of Tong © OpenStreetMap contributors

Tong: questions and answers

Will you take on work at estates like Gleann Seileach Business Park, close to Tong?

Yes. Our area takes in Tong and its surroundings, with estates and business parks such as Gleann Seileach Business Park included. Send details of the unit and the work through our quote form for a quick quote.

Do you work on the island where Tong is?

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

Do you need to see the site first?

That depends on the size and complexity of the job. Simple work can often be priced from photographs, and bigger or more complex jobs normally get a visit.

Can weather delay the job?

It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Will you quote for a small job?

Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.

Will you just go over the old sealant?

No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

Can you reseal a whole block or estate?

Yes, planned programmes suit estates and portfolios. You get a fixed quote per building or for the whole job.

Accreditations

Trusted. Accredited. Insured.