The Mastic Doctor team standing beside their branded vans outside an office building
Isle of Wight · England

Fire Stopping in Plaish

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Plaish and the surrounding area. Send photographs or drawings for a fixed quote.

  • Seals that don’t match their tested detail
  • Open linear gaps along the top of fire-resisting walls
  • Builders’ foam or ordinary silicone in compartment walls
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Fire stopping across Plaish

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

Fire stopping in Plaish

Facilities managers in Plaish often find open service penetrations when ceilings come down for other work. If a specification already covers those walls and floors, we can reseal to it using the product and detail it sets out. Where there isn’t one, the designer or fire engineer needs to set one first. Most enquiries involve non-fire-rated filler around services and snag lists that include open service penetrations, on pipe penetrations, small duct penetrations where the tested detail allows and linear gaps at wall heads. For commercial sealant work in Plaish, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

Smaller places such as Plaish still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.

We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Plaish (PO30)
Wider area
Isle of Wight
Cover
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026

Your questions answered

Is Plaish too far out for you?

Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

Do you work on fire-rated sealing in hotels in Plaish?

Yes. We install fire-rated and intumescent sealant where it is specified. Each seal follows the tested detail, and rooms are done in turn.

Do you hold CHAS accreditation?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

What site paperwork can you supply?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

Can one quote cover more than one building?

Yes. Several buildings can share a single quote, with one point of contact across South East England, Greater London and Scotland.

Does the weather affect the work?

For external joints, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

What if there’s asbestos in the old mastic?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.

Cost factors for service penetrations

The price varies from site to site. Expect it to depend on:

  • Specialist products, such as fire-rated or hygienic sealants
  • Working within restricted access windows
  • How much existing material needs removing
  • Travel to remote or island sites

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we will put a fixed figure on it.

Before you send an enquiry

A good diagnosis starts with the right details. Tell us:

  • The postcode of the building
  • Anything awkward about access or site hours
  • Any dates the work must fit around
  • Asbestos survey details if the building is older

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

How a job runs

We schedule the visit to fit the site hours and access windows you give us. 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. Rural sites near Plaish may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.

  1. First we confirm the product and tested details named in the specification.
  2. Openings are measured and grouped by detail.
  3. Improvised fillers and failed sealant are removed.
  4. Mineral wool or other backing is fitted where required.
  5. We gun the sealant in to the specified depth around each service and tool it.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

What we need from you

  • Send any specification or drawings in advance
  • Move anything stored against the joints
  • Tell us which areas need to stay in use

Get a fixed quote

Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to speak to us on 01277 525 020 or use the quote form.

Ask for a quote

Read more

Maintenance after handover

Regular inspection catches problems early. In particular:

  • Agree the fire-stopping specification before services go in
  • Check risers and ceiling voids after each round of works
  • Have penetrations checked while they can still be seen
  • Keep product data and details in the fire safety file

Add risers, plant rooms and ceiling voids to routine fire-stopping checks. Watch for cracked sealant, new services with no seal and openings that have grown and get them dealt with.

Looking at service areas on a regular cycle pays off. A cracked or disturbed seal found early is a small job; found late, it can be one of many.

When it isn’t the sealant

We check first that sealant really is the fix. It isn’t the answer for:

  • Openings that need collars, wraps, batts or boards rather than sealant
  • Walls or floors that aren’t fire-resisting to begin with
  • Deciding what a wall or floor needs, which belongs to the designer

Not sure which it is? You can give us a call on 01277 525 020 or email drawings and photos and we will tell you honestly.

Surfaces we seal

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

Compartment walls and floors in Plaish

The area within 2 miles of Plaish holds several hotels. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. There are three care or nursing homes within about 2 miles of Plaish. Where new services have gone through compartment walls in a care setting, the gaps need the specified product.

For a unit at a site such as Mountjoy Industrial Estate, which lies east of Plaish, new power or data runs between office and warehouse can breach a compartment wall. For a hotel such as Clatterford House (Hotel), which lies north-east of Plaish, penetration seals are worth checking after any refit or services upgrade.

Plaish is about 2 miles south-west of Newport, in the Isle of Wight. We send applicators to Plaish for service penetrations, handled exactly as we handle every other area. 125 places across the Isle of Wight fall within our area, Plaish among them. Sites around Portsmouth have their own page, roughly 14 miles from Plaish.

Postcode districts covered here: PO30 for service penetrations. If your building is just outside Plaish, we cover Bowcombe (1 mile south-west), Clatterford (1 mile north-east), Carisbrooke (1 mile north-east), Gunville (1 mile north) and Gatcombe (2 miles south-east). Further afield, our area takes in Ryde (8 miles east), Cowes (5 miles north), Sandown (8 miles east), Shanklin (8 miles south-east), Ventnor (8 miles south-east) and East Cowes (5 miles north-east). Island and remote sites need extra planning, with travel, ferry crossings where needed and weather to allow for, so mention the location when you speak to us on 01277 525 020 or email a schedule or drawings.

Near you in Plaish

In Plaish, that means premises near The Blacksmiths Arms and Christ The King College. Other landmarks nearby include Carisbrooke Castle (0.8 miles north-east) and Whitecroft Hospital (1.4 miles south-east). For a walk, there’s Brighstone Down and Briddlesford Nature Reserve.

Map of Plaish © OpenStreetMap contributors

Surface by surface

Risers and ceiling voids

Voids hide a lot of unsealed openings. We follow your schedule area by area and tell you about openings outside the list.

Cables and cable bundles

New data and power cables are the most common breach we see. We reseal around them to the specified detail, and any bundle too large for sealant alone is flagged.

Do you need fire stopping in Plaish?

Most open service penetrations are left by later work. New cabling, rerouted pipework or a data route drilled through a riser leaves an opening that nobody returns to. Across several fit-outs, the openings add up.

Look out for the following:

  • Fire-stopping items raised at inspection or handover
  • Fire stopping installed outside its tested range
  • Open linear gaps along the top of fire-resisting walls
  • Seals disturbed by maintenance and left open

On a hospital site such as Laidlaw Day Hospital (2.3 miles north-east of Plaish), fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.

Comparing quotes

  • Whether old or failed sealant will be cut out, not overlaid
  • The terms of the workmanship guarantee
  • Proof of insurance
  • Their plan for phasing and protecting the area

Choosing a commercial sealant contractor

Accreditations

Trusted. Accredited. Insured.