Hertfordshire · England
Daw's End Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations for Daw's End, backed by a 12-month guarantee. Ask us for a quote.
- Cracked or shrunken fire-rated sealant
- Gaps filled with a product that is not fire-rated
- Linear gaps at the head of walls
How we handle fire rated sealant in Daw's End
We often work from an action list drawn up by a fire risk assessor. If you share the list, we can quote for the gaps that need fire-rated sealant. We work on pipe & cable gaps, linear gaps and service penetrations, and common reasons people get in touch are gaps filled with a product that isn’t fire-rated and gaps around pipes and cables through fire-resisting walls.
Work in a small place like Daw's End is planned ahead, journey included, so it can be fitted around guests, clients or events where possible.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Daw's End (SG9)
- Wider area
- Hertfordshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for fire rated sealant in Daw's End
For a quick quote, just ask. The main things that affect it are:
- How many areas need sealing
- Any mould that needs treating
- The number and length of the joints
- The product the joint needs
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
Asking for a quote
When you call or email, it’s useful to know:
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- A few pictures by email, if you can
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Also near Daw's End
Other services in Daw's End
Questions from Daw's End
Is Daw's End within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What guarantee comes with fire rated sealant in Daw's End?
All our work, in Daw's End and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Can I use normal mastic around a pipe through a fire wall?
No. Standard sealants are not made or tested to stop fire. If it’s been used, we remove it and use the right product.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Will there be a smell?
Some sealants have a smell while they cure. Opening a window helps.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Can you tell me which gaps need fire stopping?
No. That is for a fire risk assessor, designer or building control. We apply fire-rated sealant to the requirements they set.
What we are called out for in Daw's End
Movement in the structure can open gaps too: a seal that cracks or pulls away leaves a path for smoke. Knocks, maintenance and building work damage it further.
Keep an eye out for these signs:
- Door frames with gaps between frame and wall
- Ordinary sealant used where a fire-rated product was needed
- Unsealed gaps where pipes and cables go through a wall
- Seals cut through by electricians, plumbers or data installers
Community buildings like Church of St George are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking.
What to look for in a quote
- What happens if they find a problem under the old sealant
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- Whether VAT is included
Workplaces and buildings in Daw's End
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, which is often where open fire-stopping gaps are first noticed. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
If you look after a building such as Anstey First School, fire-stopping around service openings should be restored whenever new services go in.
Daw's End is in Hertfordshire. If you need fire rated sealant in Daw's End, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We’re based in Crawley and cover Hertfordshire. Our area takes in 381 places across Hertfordshire, large and small. You can also see our page for Chelmsford, about 25 miles away.
Postcode districts we cover here for fire rated sealant: SG9. Neighbouring places we cover for fire rated sealant include Anstey (1 mile north), Great Hormead (1 mile south), Wyddial (2 miles west), Brent Pelham (2 miles south-east) and Lower Green (2 miles north-east). Within a short drive, we also cover Stevenage (11 miles south-west), Bishop's Stortford (9 miles south-east), Hitchin (13 miles west), Hoddesdon (15 miles south), Hertford (13 miles south-west) and Letchworth (11 miles west).
What’s near Daw's End
In Daw's End, that means homes and buildings near The Blind Fiddler pub. A little further out are Anstey Hales Farm (0.6 miles north-east). The countryside around Daw's End includes Hawkins Wood.
How the job changes by surface
Linear gaps
Linear gaps run along the head of walls, at floor edges and between panels. They’re sealed with a fire-rated sealant over backing where the detail calls for it.
Masonry and concrete
Preparation counts on brick, block and concrete. The gap is cleaned and backed where required before applying the sealant.
What we can’t put right
A few problems are outside what sealant work can do:
- Sign-off of the building, which sits with building control or your assessor
- Fire doors that need new seals, closers or hardware
- Big openings where sealant alone isn’t the tested solution
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before you book.
Joints and surfaces we work on
- Service penetrations
- Pipe & cable gaps
- Linear gaps
- Plasterboard & masonry
- Flats & HMOs
- Door frames
What happens on the day
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes from a few hours to a few days, depending on the number of gaps and the access. Somewhere like Daw's End 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.
- Access to each area is agreed so the work can run in order.
- We take out any damaged or unsuitable sealant.
- Dust and loose debris are cleaned from each gap.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Getting ready for the visit
- Keep children and pets away from the work area
- Tell us if parking is tricky
- Mention any sign-in or site rules at work premises
Getting a quote
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear quote before work begins.
Advice
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Landlords, agents and businesses in Daw's End
We also work for property managers and facilities teams in Daw's End and across Hertfordshire. Several sites can go on one quote, and we’re fully insured.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.