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

Mastic contractors in Shader

Mastic packages for new-build and refurbishment projects throughout Shader and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Old sealant on a refurbishment that needs stripping before new work
  • Sanitary sealant damaged by following trades
  • Frame gaps too wide for sealant alone
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Need construction mastic in Shader?

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

What we’re called out for in Shader

Three-sided adhesion is a frequent fault on new work. Bonded to the base of the joint and both sides, sealant can’t stretch evenly.

Clients normally get in touch after noticing something like this:

  • Old sealant on a refurbishment that needs stripping before new work
  • Early adhesion failures on new external joints
  • Snag items on joints that need redoing before handover
  • Caulk cracking where joints are moving more than expected

Sites around Shader get mastic sealed to the drawings and the programme, nothing improvised.

Before you book anyone

  • How long is the guarantee, and what does it include?
  • Will CSCS-carded applicators be on site?
  • Do they follow the manufacturer’s priming guidance?
  • Will RAMS and insurance details be available?

Questions to ask before you appoint anyone

How we handle construction mastic in Shader

Since 2005 we’ve worked alongside main contractors, developers and fit-out firms. Quantities come off the drawings, the sequence is agreed with the site manager and the work follows the trades. For construction mastic on a scheme in Shader, send drawings through our quote form, or phone or email us to talk it through. We work on window and door perimeters, sanitary and kitchen joints and internal decorators’ caulk, and the usual reasons a site gets in touch are missed perimeter joints on a new elevation and bath and shower joints scraped during the final clean. A single leaking joint is often how a building in Shader 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.

Sites near smaller places like Shader can mean longer travel, so the mastic is planned with as few trips as the job allows. Send drawings, photos and the programme so everything needed arrives on the first day.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we are clear about what is covered before work starts.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Shader (HS2)
Region
Na h-Eileanan Siar
Cover
A 12-month guarantee
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026

Our process

Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Where we can, we combine work around Shader with other jobs nearby, to make the most of each trip. Let us know if your dates have any give.

  1. We walk the site or review drawings to understand the package.
  2. You receive a fixed quote covering scope, products and sequence.
  3. Site paperwork is confirmed and our CSCS-carded applicators are inducted.
  4. We seal plot by plot or floor by floor in line with the programme.
  5. Problems we find, such as oversized gaps, are raised right away.
  6. Final snagging is completed and the 12-month guarantee applies.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Have the specification and drawings to hand
  • Warn occupants and staff about the work

Request a quote

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. The easiest way is to phone 01277 525 020 or use the quote form.

Get a quick quote

Related advice

Work for main contractors and building owners

As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

Contractors’ notes for Shader

With the shore within about 1 mile, Shader counts as a coastal location. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, so joint design, primers and product choice deserve extra care. Work on Shader has to fit the ferry timetable and the forecast. Everything for the package travels with us, so drawings and quantities matter.

Hotel extensions and refits, at places such as Borve Country House Hotel, 1.3 miles to the north-east of Shader, usually run between busy periods, so the sealing is squeezed into short windows.

Shader (Gaelic: Siadar) is in Na h-Eileanan Siar. Across the HS2 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Shader is one of 87 places in Na h-Eileanan Siar on our list.

Commercial sites across HS2 are covered for mastic packages. Just outside Shader, we also work in Borgh (1 mile north-east), Barabhas (4 miles south-west), West Side (4 miles south-west), South Dell (7 miles north-east) and North Dell (8 miles north-east). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.

Local landmarks in Shader

Green spaces nearby include Loch Mòr Bharabhais.

Map of Shader © OpenStreetMap contributors

Aftercare for building managers

A few simple habits keep the new joints working:

  • Record the products used in the O&M file
  • Share drawings and the specification as soon as possible
  • Bring the mastic contractor in after the last trades are through
  • Put any product change through the designer first

After we have sealed an area, it helps to keep other trades from damaging the joints. Fresh sealant needs its cure time before it’s cleaned, painted near or knocked; we confirm the time for each product.

Snag items left to the last week put handover at risk. Clearing snags area by area spreads the work out.

Questions we’re asked in Shader

Does a coastal location like Shader 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.

Can you work to our programme on a site in or near Shader?

Yes. The mastic is planned around your key stages. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Are you fully insured?

Yes. Our insurance certificate can be sent alongside the quote.

Will you quote for a small job?

We quote for single jobs as well as large packages and programmes. Send details for a fixed 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.

Do you take on multi-site work?

Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.

Do you need to see the site first?

Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we will arrange a visit.

What happens if it’s left?

When a package runs over budget, downgrading the product is a common first thought. The saving is small next to the cost of callbacks and defects. Where an alternative is genuinely suitable, we’ll say so. Renewing every failing joint on one visit is the sensible approach for a place like Shader. Photos of each area help us quote the whole job.

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.

Why appoint us

  • A range of standard colours, depending on the product
  • Clear, fixed quotes
  • Colour options checked against the specified product
  • CHAS accredited contractor

Take a look at our cost guide and our accreditations and insurance.

Doing it in-house

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

Accreditations

Trusted. Accredited. Insured.