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

Fire Stopping in Grimbister

Fire stopping for Grimbister, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Seals that don’t match their tested detail
  • Openings left by services added after handover
  • Non-fire-rated filler around services
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Fire stopping near Grimbister

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Fire stopping in Grimbister

Every service that crosses a compartment wall or floor leaves an opening, and that opening needs sealing to hold back fire and smoke. Our job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. Each seal follows the manufacturer’s tested detail. We work on joints between fire-resisting walls and floors, cable penetrations and linear gaps at wall heads, and the usual reasons a site gets in touch are fire sealant pulled out of the opening and improvised or mixed-product fire seals. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Grimbister is the same: the right product in a properly prepared joint.

For a building near Grimbister, we plan fire-rated sealing so it’s finished in one visit where possible. Send the specification and photos of the openings, with sizes if you have them.

A 12-month guarantee applies to all our work. Should something we installed fail, ring 01277 525 020 or email drawings and photos and we will come back to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Grimbister (KW15)
Wider area
Orkney Islands
Cover
12 months on our workmanship
Quote
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026

Diagnose, treat, sign off

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. For work around Grimbister, we aim for one trip, so photos, sizes and a full list matter. External joints need a dry spell as well.

  1. First we go through the drawings, schedule or specification for the seals and raise any questions before we price.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

What we need from you

  • Confirm the product named in the specification
  • Point out parking and an unloading spot
  • Let us know about inductions and permits

Ask for a quote

The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or email us to discuss it first.

Get a quick quote

Advice

Grimbister: questions and answers

Can you work on a hospital site such as Balfour Hospital?

Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.

Do you work on the island where Grimbister is?

Yes, Grimbister is within the area we cover. Every Scottish council area is within our area. We group island work where we can and plan around the crossings.

Does the weather affect the work?

For external joints, 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.

What about RAMS and site documents?

Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.

What do BS EN 1366-3 and BS EN 13501-2 mean?

The tests are BS EN 1366-3 for penetrations and BS EN 1366-4 for linear joints, and classification is to BS EN 13501-2. An EI 60 seal kept its integrity and insulation for 60 minutes as tested.

Which sealant will you use?

A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Can you follow the specification on our project?

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.

How the job changes by surface

Risers and ceiling voids

Service risers and the voids above ceilings are where openings collect. Access is often tight, so we agree it with you in advance.

Metal pipes

Copper and steel pipes are a common service penetration for fire-rated sealant. Pipe diameter, annular gap, sealant depth and any pipe insulation all have to match the detail and we confirm each before sealing.

What sealant work can’t fix

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

  • Walls or floors that aren’t fire-resisting to begin with
  • Approving the work on behalf of building control
  • Reviewing a building’s overall fire safety

If in doubt, phone 01277 525 020 or email the details over and we’ll say what we think.

What we seal

  • Joints between fire-resisting walls and floors
  • Linear gaps at wall heads
  • Service gaps in risers
  • Small duct penetrations where the tested detail allows
  • Pipe penetrations
  • Cable penetrations

Penetration seals near Grimbister

For an island location such as Grimbister, work is planned around ferry crossings and the weather. Photos of each opening and the specification mean the right products make the trip. Under the Scottish non-domestic Technical Handbook, clause 2.1.14, penetrations should be fire stopped to at least the wall or floor’s fire resistance duration, with proprietary products, intumescent ones included, tested for their end use. We install fire-rated sealant to that tested detail where it is specified.

Buildings near Grimbister get the fire-rated product that’s specified, installed to its tested detail.

Grimbister is about 5 miles west of Kirkwall, in the Orkney Islands. Commercial clients in Grimbister can call on us for service penetrations, as part of our coverage of the Orkney Islands. 51 places across the Orkney Islands fall within our area, including Grimbister.

If you need fire stopping in KW15, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. We also cover Finstown (1 mile north-west), Heddle (1 mile west), Germiston (2 miles south-west), Kirbister (4 miles south) and Norseman (4 miles north) for service penetrations. Where a site is remote or on an island, we plan travel and materials carefully, so include the location in your enquiry.

Around Grimbister

Nearby you will also find Balfour Hospital (4.9 miles east) and Kirkwall Castle (4.9 miles east). Not far away are Loch of Wasdale and Hill of Heddle.

Map of Grimbister © OpenStreetMap contributors

What affects the price in Grimbister

Quotes vary with the job. Expect it to depend on:

  • Backing rod, priming and other preparation
  • Working within restricted access windows
  • Quantities, in metres or numbers
  • Site requirements such as inductions and permits

Pricing service penetrations depends on how many there are, their condition and the access, plus any specification you’re working to. Call for a quote.

What we need to price the job

The more we know, the firmer the quote. Helpful details to send:

  • Your programme or deadline
  • Any specification or named product
  • Access details, including height
  • The postcode of the building

Need a figure for a tender or a budget? We’ll quote against your scope and drawings that you can work with. If you have questions first, ring 01277 525 020 or send photos by email.

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Common problems we fix in Grimbister

Damage plays a part too. Maintenance work can knock a seal, cut it back for an extra cable or remove it with an old pipe.

Any of the following is a good reason to get the joints checked over:

  • Seals that don’t match their tested detail
  • Non-fire-rated filler around services
  • Damaged fire seals in risers and voids
  • Old intumescent sealant that has split away

For a hospital such as Balfour Hospital, 4.9 miles east of Grimbister, penetration sealing is usually phased ward by ward, with infection-control rules agreed first.

What your quote should include

  • Will failed sealant be removed rather than covered?
  • Proof of insurance
  • Their pre-qualification and accreditations
  • How they’ll work around occupants

Choosing a commercial sealant contractor

Accreditations

Trusted. Accredited. Insured.