Isle of Wight · England
Fire-rated sealant in Northwood, Isle of Wight
Fire rated sealant in Northwood from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps where walls meet ceilings or slabs
- Standard silicone or caulk in a fire-stopping gap
- Unsealed gaps where pipes and cables go through a wall
Quotes for fire rated sealant in Northwood
Your quote is based on your job. We take into account:
- Access and height
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
Every job is quoted individually, so the first step is telling us about yours. Just phone 0345 464 0079 or email us with the details, and pictures are welcome.
Fire rated sealant in Northwood
A fire seal relies on being installed the way it was tested: correct depth, correct backing and a product suited to the surfaces. That is the part we focus on, gap by gap. If you are dealing with open gaps behind door architraves and open holes round services passing through fire walls, we can put it right, whatever the surface.
If you have holiday lets, a converted barn used for business or a community building near Northwood, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
All of our work is guaranteed for twelve months.
- Place
- Northwood (PO31)
- Region
- Isle of Wight
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
What we are called out for in Northwood
Gaps also open up as buildings move: cracked or debonded sealant leaves an open route through the wall. Knocks, maintenance and building work damage it further.
These are the problems we are asked about most:
- New service routes left unsealed after building work
- Gaps where walls meet ceilings or slabs
- Fire stopping disturbed by later work
- Gaps flagged on a fire risk assessment
If you look after a church, hall or community building such as All Saints' Church, gaps around pipes and cables are worth checking after any building work there.
What your quote should include
- What the cure time is
- What the quote includes, VAT included or not
- Are they insured?
- How much experience the applicator has
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Also near Northwood
Also in Northwood
Aftercare tips
So the new joints stay in good condition:
- Tell trades working in the building that fire seals must be put back
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- Include hidden areas like risers in routine checks
- Flag any open gap you spot round a pipe or cable
Let contractors know where fire stopping has been done, and ask them to reseal anything they cut through. A lot of damaged fire stopping comes from later work.
Small gaps around services are simple to deal with while there are only a few. Leave them and each new job adds another hole and the job gets bigger.
Fire rated sealant in Northwood: local notes
If you run a hotel, guest house or holiday let in a coastal place like Northwood, heavy use in the busy months is hard on washroom and kitchen sealant, and any building work there should leave fire-rated joints made good. There are hotels and other places to stay in and around Northwood. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
For site and facilities teams at buildings such as Northwood Primary School, service openings in fire-resisting walls need checking after any refurbishment.
Northwood is about 1 mile south of Cowes, in the Isle of Wight. From the centre of Northwood to the outskirts, fire rated sealant is available for homes and businesses alike, from flats and houses to offices and hotels. 125 places in the Isle of Wight are on our list, large and small. There’s also a page for Portsmouth, about 11 miles away.
Jobs for fire rated sealant in PO31 is quoted and booked the same way as anywhere else. We cover properties on Nodes Road, Wyatts Lane and Uplands Road and the roads around them. We also cover the places around Northwood: Rew Street (1 mile west), Gurnard (1 mile north), Cowes (1 mile north), Noke Common (2 miles south) and Parkhurst (2 miles south). Larger places within reach include 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). For island and remote addresses, the job takes a little more planning, so let us know when you get in touch.
Around Northwood
In Northwood, that means homes and buildings near Cowes Enterprise College and The Travellers Joy pub and the streets around them. 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.
Questions from Northwood
Do you take on hotel work around Northwood?
Yes, we work for hotels as well as homes and businesses. A room-by-room programme keeps most rooms in use while the work goes on.
Do you cover Northwood for fire rated sealant?
Yes, Northwood is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Can you give us a record of the work?
Yes. We record the locations we have sealed and the products used.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
What’s the difference between intumescent and fire-rated sealant?
Intumescent means it swells when heated, helping close the gap. Intumescent sealants are one kind of fire-rated sealant; which product suits depends on the gap, the substrate and the service.
Do you guarantee your work?
Yes, for a year. If anything isn’t right with the work within the year, let us know and we’ll sort it.
Do you do fire sealant around door frames?
Yes. The joint between frame and wall is sealed with a fire-rated sealant, to the product’s details. The door, its seals and closer are for a door specialist.
How it works
We bring everything the job needs with us, so you don’t need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take from a few hours to a few days, depending on the number of gaps and the access. In a small place like Northwood, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- We apply and tool the sealant to the product’s tested detail.
- We record what was done and flag anything that needs a different system.
Preparing for the visit
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
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Why deal with it now?
An open gap in a fire-resisting wall is a route for smoke and fire. Sealing it properly restores what the wall was there to do, and the sealing itself is often a contained piece of work. Older cottages and farmhouses around Northwood can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Why choose Mr Mastic in Northwood
- 20+ years of sealant experience
- A 12-month guarantee on all work
- Arbo and Everbuild products
- Any old sealant cut out fully, not covered over
See our cost guide and customer reviews.