West Sussex · England
Fire-rated sealant in Colwood, West Sussex
Fire rated sealant for Colwood and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Open holes round services passing through fire walls
- Fire seals that have cracked with movement
- Gaps where walls meet ceilings or slabs
How we handle fire rated sealant in Colwood
Intumescent sealant looks much like any other sealant until it gets hot; then it swells to help close the gap. Which product suits a gap depends on its width, the materials either side and what runs through it. We work on plasterboard & masonry, service penetrations and door frames, and the jobs we see most are gaps left after a refit or conversion and sealant items on a fire risk assessment action list.
Somewhere as small as Colwood, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. They all have washrooms, kitchens and service openings that need the right sealant.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Colwood (RH17)
- Region
- West Sussex
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Colwood
Will you come out to Colwood?
Yes, Colwood is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is Colwood in your area for fire rated sealant?
Yes, Colwood is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
Can you fill the gap behind a fire door frame?
Yes. We often seal open gaps hidden behind the architrave. Doors, seals and closers need a door specialist.
Is intumescent sealant the same as fire-rated sealant?
Fire-rated sealant covers any sealant tested for use in fire stopping. Intumescent types expand when heated, and they’re one of the options. The specification and the tested detail decide which is used.
Is there any odour?
There can be a smell while the sealant cures. Ventilation helps.
Do you guarantee your work?
Yes. Every job comes with our 12-month guarantee.
Why act early in Colwood
Squirting in whichever sealant is nearest does not make a fire seal. A fire-rated product only performs as tested when it’s installed to its tested detail, which is why we match the product and the method to each gap. Where a wall is exposed, as many are in small places like Colwood, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is usually more efficient than separate visits. You will get one clear quote for the whole job.
Why choose Mr Mastic in Colwood
- We never seal over old sealant
- Quality sealants from Arbo and Everbuild
- An ARBOMaster approved applicator
- A 12-month guarantee on all work
See our cost guide or customer reviews.
Nearby places to Colwood
Also in Colwood
Fire rated sealant around Colwood
In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
For jobs in and around Colwood, choosing the right material for each joint is as important as a tidy finish.
Colwood is about 5 miles north-west of Burgess Hill, in West Sussex. Every kind of property in Colwood is covered for fire rated sealant, old or new, large or small. The work is guaranteed for a year. Colwood is one of 371 towns and villages in West Sussex we cover. There’s also a page for Crawley, about 8 miles away.
Work in RH17 works the same way as everywhere else we cover. Whether your property is on Earwig Lane and Cross Colwood Lane or a nearby road, we can help. Nearby, we also carry out fire rated sealant in Crabtree (1 mile north-west), Lower Beeding (2 miles north-west), Slaugham (3 miles north), Plummers Plain (3 miles north) and Monk's Gate (3 miles north-west). Larger places within reach include Crawley (8 miles north), Horsham (6 miles north-west), Worthing (15 miles south-west), Haywards Heath (6 miles east), Burgess Hill (5 miles south-east) and East Grinstead (13 miles north-east).
Landmarks near Colwood
In Colwood, that means homes and buildings near Leonardslee, among other places. Other landmarks nearby include The Dene Hospital (3.8 miles south-east) and Cuckfield Museum (3.7 miles east). Open spaces near Colwood include Blunts Wood and Paiges Meadow.
Landlords, agents and businesses in Colwood
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured.
Surface by surface
Service penetrations
New gaps tend to show up where services have been added. Old or unsuitable filler comes out before the right sealant goes in with backing where the detail needs it.
Masonry and concrete
Preparation counts on brick, block and concrete. The gap is cleaned and backed where required.
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Quotes for fire rated sealant in Colwood
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- When we can work, for business premises
- The number and length of the joints
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before we start, so you know where you stand.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- Any access issues, like height or stairs
- Whether it’s a home or a business
- The address or postcode of the job
- Any previous sealing or DIY work
Want a quote for fire rated sealant? Please phone 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.
What we’re called out for in Colwood
Sealant applied too thin, without the backing its detail needs, or onto dust will not perform as it was tested. Rushed fire stopping is common, especially where it was squeezed in at the end of a project.
It’s worth asking for a quote if you see:
- Standard silicone or caulk in a fire-stopping gap
- Cracked or shrunken fire-rated sealant
- Open holes round services passing through fire walls
- Linear gaps at the head of walls
Around Colwood, as everywhere, fire rated sealant is only as good as the preparation behind it.
What to look for in a quote
- How the joint is cleaned and prepared
- What product goes in the joint
- Which colour the sealant will be
- Who turns up on the day
How it works
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and tidy away. It usually takes anything from a few hours to several days, depending on how many gaps there are. Somewhere like Colwood needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Before starting, we go through the specification or action list with you.
- We measure every gap and note what it’s in and what passes through.
- Any non-fire-rated filler is removed and the gap cleaned.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products for your files.
Preparing for the visit
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
- For business premises, tell us about site rules or sign-in
Ask for a quote
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.