Fire-rated sealing and fire stopping in Northwood, Isle of Wight
Fire stopping for Northwood, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Unsealed openings around new pipes and cables
- Expanding foam used as fire stopping
- Hidden openings found during inspections
Fire stopping for businesses in Northwood
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Northwood: questions and answers
How does the move away from BS 476 affect penetration seals in Northwood?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
Do you seal service penetrations in hotels around Northwood?
Yes, where the specification calls for fire-rated sealant. We match the product to the wall or floor and the services, and say if something other than sealant is needed.
Do you cover Northwood?
Yes. We cover Northwood, within our coverage of Greater London, South East England and Scotland. For a quote, speak to us on 01277 525 020 or email a schedule or drawings.
Can you handle several sites?
Yes. Several buildings can share a single quote, and you deal with one contact throughout.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
Can you follow the specification on our project?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, so we will confirm the curing time on the day.
About our fire stopping in Northwood
Most of our fire stopping work happens after the building is up. Each new cable, pipe or data route cut through a fire-resisting wall leaves an opening behind, often unnoticed. We close the openings listed on your schedule, using the specified sealant and detail. If you’re dealing with unsealed penetrations discovered above suspended ceilings and unsealed joints where partitions meet the slab, we can help. Searching for sealant specialists in Northwood? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Rural conversions around Northwood can put new fire-resisting partitions inside older structures. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.
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.
- Where
- Northwood (PO31)
- Region
- Isle of Wight
- Cover
- 12 months on every job
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Places near Northwood
What else we do in Northwood
Compartment walls and floors in Northwood
The 2 miles around Northwood include five care or nursing homes. Care homes rely on fire-resisting walls and floors, and maintenance work that breaks through them leaves openings to seal. Where that’s fire-rated sealant, we install it to the manufacturer’s tested detail. A good number of hotels sit less than 2 miles from Northwood. 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.
For a site team at a college like The Isle of Wight College, which lies south of Northwood, fire-rated sealing is best scheduled after the summer works. In a building such as All Saints' Church, any service penetration through a fire-resisting wall should be sealed to the specified detail. For a building at a site such as Island Technology Park, which lies east of Northwood, a check of penetration seals after each fit-out is good practice.
Northwood is about 1 mile south of Cowes, in the Isle of Wight. We cover Northwood, with the same fixed quotes and 12-month guarantee as everywhere else. Across the Isle of Wight, 125 places are covered, including Northwood. Sites around Portsmouth have their own page, roughly 11 miles from Northwood.
Anyone looking for fire stopping in PO31 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Nodes Road, Wyatts Lane and Uplands Road are within our area for service penetrations. If your building is just outside Northwood, we cover Rew Street (1 mile west), Gurnard (1 mile north), Cowes (1 mile north), Noke Common (2 miles south) and Parkhurst (2 miles south). Further afield, our area takes in Newport (3 miles south), Ryde (7 miles east), Sandown (9 miles south-east), Shanklin (10 miles south-east), Ventnor (11 miles south-east) and Oakfield (7 miles east). Where a site is remote or on an island, travel and materials need planning ahead, so include the location in your enquiry.
Landmarks near Northwood
We work on buildings around Cowes Enterprise College and The Travellers Joy pub. Other landmarks nearby include Isle of Wight Natural History Centre (0.5 miles north) and West Cowes Castle (1.7 miles north). Green spaces nearby include Mill Hill and Briddlesford Nature Reserve.
Cost factors for service penetrations
Before we quote, we look at:
- Removal of failed or old sealant
- The total length or number of joints
- Phasing around occupants
- Specialist products, such as fire-rated or hygienic sealants
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Details that help us quote
For an accurate fixed quote, we need to understand the site. Send us:
- Where the site is, with the postcode
- What the building is and how it’s used
- Your programme or deadline
- Anything awkward about access or site hours
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, speak to us on 01277 525 020 or email the details over.
Different surfaces, different methods
Metal pipes
Heat travels along metal pipework, and some details add wrapping or a set length of insulation. We follow whatever the detail requires and flag anything we can’t match.
Plastic pipes
Plastic waste pipes through slabs come up often. Whether sealant alone is acceptable depends entirely on the tested detail.
Honest limits
Some faults sit outside our scope, and we say so rather than covering them up:
- Reviewing a building’s overall fire safety
- Issuing fire ratings or certificates for seals
- Openings that need collars, wraps, batts or boards rather than sealant
Not sure which it is? You can call the office on 01277 525 020 or email drawings and photos and we’ll tell you honestly before you book.
Surfaces we seal
- Pipe penetrations
- Linear gaps at wall heads
- Cable penetrations
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Service gaps in risers
Why it’s worth doing now in Northwood
An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. For buildings around smaller places like Northwood, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Resealing early avoids that.
We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.
What you get with us
- Constructionline member for supplier checks
- Commercial sealant work since 2005
- Products installed to the manufacturer’s instructions
- A fixed quote before work starts
Take a look at what affects the cost and our accreditations and insurance.
From enquiry to sign-off
Before we leave any area, we remove the tape, clean down and inspect every joint with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out. For a building around Northwood, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.
- First we confirm the product and tested details named in the specification.
- We sort the openings by the detail each one needs.
- Old or wrong materials are cut out.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- We walk the completed areas with you and confirm the records agreed at quote stage.
Before we start on site
- Send asbestos survey details if the building is pre-2000
- Flag any permit to work we will need
- Explain the parking and delivery arrangements
Quotes
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to ring 01277 525 020 or use the quote form with what you know.
Read more
When to bring in a specialist
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.