Hertfordshire · England
Nether Street Fire Rated Sealant
Specialist fire rated sealant for Nether Street: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Fire seals that have cracked with movement
- Unsealed gaps where pipes and cables go through a wall
- Fire stopping disturbed by later work
Common questions in Nether Street
Can you help a landlord with a rental near Harlow Town station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Is Nether Street in your area for fire rated sealant?
Yes. We work across London and the South East, and Nether Street is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear quote.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do you guarantee your work?
Yes, always. Each job is guaranteed for twelve months, large or small.
Can you work in occupied buildings?
Yes, whether the building is a school, an office, flats or an HMO, and whether it’s in use or not. Let us know the building’s hours and we will plan the work to suit.
Can I add another job to the visit?
Yes, we can. More than one area can be quoted together.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Fire rated sealant for homes and businesses in Nether Street
A gap around a door frame, a linear joint at the head of a wall and a hole round a pipe are each sealed differently. We check the size and the substrate before choosing the product, then apply it to the depth its tested detail calls for. If you have fire seals that have cracked with movement and ordinary sealant used where a fire-rated product was needed, we can help, on linear gaps, flats & HMOs and service penetrations alike.
If you have holiday lets, a converted barn used for business or a community building near Nether Street, washroom and kitchen sealant and any fire-rated joints need the same attention as anywhere.
We stand behind the work with a 12-month guarantee, so you’re not left on your own once the job is done.
- Place
- Nether Street (SG12)
- Wider area
- Hertfordshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Workplaces and buildings in Nether Street
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, 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 buildings such as Parish Church of St John the Baptist, older buildings that have had new heating or wiring often have service gaps worth checking. Schools such as Widford School are buildings too, and service openings in fire-resisting walls need checking after any refurbishment.
Nether Street is about 4 miles east of Ware, in Hertfordshire. From the centre of Nether Street to the outskirts, fire rated sealant is available for homes and businesses alike, from flats and houses to offices and hotels. We cover 381 towns and villages across Hertfordshire, large and small. Chelmsford is on our list too, about 19 miles from Nether Street.
Postcode districts we cover here for fire rated sealant: SG12. Neighbouring places we cover for fire rated sealant include Widford (1 mile south-west), Hunsdon (1 mile south), Hadham Cross (2 miles north), Hunsdonbury (2 miles south) and Wareside (2 miles west). Further out, we also cover Stevenage (12 miles north-west), Bishop's Stortford (5 miles north-east), Welwyn Garden City (11 miles west), Hoddesdon (6 miles south-west), Cheshunt (9 miles south-west) and Hatfield (13 miles west).
Around Nether Street
We work in homes and buildings around The Bell Inn On The Corner Of Bell Lane and the streets around them. For rail, the closest station is Harlow Town station, roughly 3.2 miles south of the centre. Nearby you will also find Harlow Mill (3.5 miles south-east) and Henry Moore Studios and Gardens (1.2 miles north-east). Green spaces nearby include Hunsdon Mead.
Aftercare tips
To keep the joints looking good and working properly:
- Do not fill fire-stopping gaps with ordinary foam or silicone
- Ask every contractor to reseal any fire stopping they disturb
- Take photos of fire stopping before ceilings or boxing go back
- Store the list of sealed gaps with your building paperwork
Look at the sealed gaps as part of your routine walk-rounds. Look for cracks, gaps or sealant that has been cut or pulled out and get them seen to.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Sealing it early is a simple step to take.
When to call us in Nether Street
Gaps around door frames are easily missed. The gap between the frame and the wall is hidden behind the architrave, so it can be left open when a door is replaced.
Keep an eye out for these signs:
- Gaps flagged on a fire risk assessment
- Unsealed gaps where pipes and cables go through a wall
- Fire stopping disturbed by later work
- Cracked or shrunken fire-rated sealant
For landlords with property near Harlow Town station, any gap left by new services in shared walls should be closed with a fire-rated product.
What to look for in a quote
- Which colour the sealant will be
- Whether they’re fully insured
- How hidden problems are handled
- Whether all the old sealant comes out first
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Assessing a building’s fire safety
- Construction that doesn’t provide fire resistance on its own
- Problems with the door itself rather than the gap around the frame
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Pipe & cable gaps
- Linear gaps
- Door frames
- Service penetrations
- Flats & HMOs
- Plasterboard & masonry
What affects the quote in Nether Street
We quote each job individually. This is what makes a difference:
- Access and height
- The number of rooms or windows
- When we can work, for business premises
- Which sealant suits the joint
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first.
What to tell us for a quote
To help us quote quickly, please include:
- Roughly how big the job is
- If someone has resealed it before
- The problem you’ve noticed
- Where the property is
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Towns and villages near Nether Street
More services for Nether Street
Why it’s worth doing now in Nether Street
Leaving a gap until a refurbishment comes round can mean years with it open. On its own, sealing it now is a small job that does not depend on other work. Where a wall is exposed, as many are in small places like Nether Street, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why Nether Street customers choose us
- 12-month guarantee on every job
- Tidy, careful work
- Sanitary silicone with an anti-fungal additive in wet areas
- Full insurance on every job
Take a look at what affects the cost and our reviews.
How the job changes by surface
Flats and HMOs
Converted houses often have gaps around old and new services. The gaps on your list are sealed with a fire-rated product and record where they are.
Linear gaps
Gaps along the top of partitions are easy to miss above a ceiling. We seal them along their full length so there are no open sections left.
What we do, step by step
At the end, we look at the finished work together. The work normally takes anything from a few hours to several days, depending on how many gaps there are, depending on the size of the job. Somewhere like Nether Street 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.
- First we work through your list or survey, measuring each gap and checking what it’s formed in.
- We remove any old or unsuitable filler and clean the gap.
- Where the tested detail needs backing or fill, we fit it.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- Locations and products are noted so you have them on file.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Clear items away from the joints we are working on
- For business premises, tell us about site rules or sign-in
How to get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.