Hertfordshire · England
Fire-rated sealant in Shenley, Hertfordshire
Fire rated sealant in Shenley from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Fire stopping disturbed by later work
- Cracked or shrunken fire-rated sealant
- Gaps flagged on a fire risk assessment
Fire rated sealant for homes and businesses in Shenley
Where services or frames pass through a fire-resisting wall or floor, the gap around them needs a fire-rated seal. We apply intumescent and fire-rated sealants to the manufacturer’s tested details for each gap, with a record of the products and locations if you need one. Typical jobs include unsealed gaps where pipes and cables go through a wall and door frames with gaps between frame and wall, on flats & HMOs, door frames and service penetrations.
If you run a pub, café, guest house or shop in or near Shenley, its washrooms and kitchen need the same sealant care as any big building, and fire-rated sealant around service openings should be restored after new pipes or cables go through.
We stand behind the work with a 12-month guarantee.
- Where
- Shenley (WD7)
- Region
- Hertfordshire
- Cover
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Do you need fire rated sealant in Shenley?
Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it can be left open when a door is replaced.
It’s worth asking for a quote if you see:
- Open joints along the top of partitions
- Door frames with gaps between frame and wall
- Damaged fire sealant left by other trades
- Unsealed gaps where pipes and cables go through a wall
For buildings such as Church of St Martin, older buildings that have had new heating or wiring often have service gaps worth checking.
What to look for in a quote
- How long to leave it before use
- How much experience the applicator has
- Are they insured?
- Which colour the sealant will be
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Report cracked or damaged seals as soon as you notice them
- Ask which product was used before you paint
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- Take photos of fire stopping before ceilings or boxing go back
Include fire stopping in your regular building checks. Watch for cracking, gaps or seals that have been disturbed and have them put right.
A flagged gap shouldn’t wait for the next assessment. Have it sealed, then keep the record.
What fire rated sealant looks like in Shenley
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.
For site and facilities teams at buildings such as Shenley Primary School, service openings in fire-resisting walls need checking after any refurbishment. For landlords with property near Radlett station, any gap left by new services in shared walls should be closed with a fire-rated product.
Shenley is about 2 miles north of Borehamwood, in Hertfordshire. We carry out fire rated sealant for homeowners, landlords and businesses in Shenley and nearby. Our Hertfordshire coverage runs to 381 places, and Shenley is one of them. There’s also a page for London, about 16 miles away.
Here we cover the WD7 postcode area for fire rated sealant. That includes homes and businesses on London Road, Southerton Way and Juniper Gardens and the roads around them. Main roads around Shenley include the B5378. We also cover Green Street (1 mile south-east), Ridge (2 miles east), Well End (2 miles south-east), Borehamwood (2 miles south) and South Mimms (2 miles east). Further out, we also cover Watford (5 miles south-west), Hemel Hempstead (8 miles north-west), St Albans (4 miles north-west), Welwyn Garden City (8 miles north-east), Harpenden (9 miles north) and Hoddesdon (12 miles east).
What’s near Shenley
In Shenley, that means homes and buildings near Manor Lodge School, Hertswood Academy and The Black Lion pub, among other places. Shenley’s nearest station is Radlett station, roughly 1.4 miles south-west. A little further out are Radlett and District Museum (1.5 miles south-west) and Shenley Hospital (less than half a mile west). Open spaces near Shenley include Verulamium Lake and Broad Colney Lakes.
Shenley: your questions answered
Do you cover Shenley for fire rated sealant?
Yes. We work across London and the South East, and Shenley is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
I let a flat near Radlett station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Is it worth trying it myself?
That depends on the joint. 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.
Can you tell me which gaps need fire stopping?
No, we don’t assess buildings. When your assessor or designer has set out what’s needed, we can quote for the fire-rated sealant items.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Do you offer different sealant colours?
Yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before any work starts.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Places near Shenley
More services for Shenley
Can I do it myself?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What affects the cost of fire rated sealant
You’ll get a clear quote before work begins. It’s based on:
- The number and length of the joints
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- Whether there’s mould to deal with
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first.
What to tell us for a quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- The rough size of the job
- Where the property is
- If someone has resealed it before
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Why act early in Shenley
For some gaps, sealant is not the right answer and another system is needed. Big openings, bundles of cables and plastic pipes may need batts, collars or wraps instead. We’ll say so if a gap needs something other than sealant. Around Shenley, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
What you get with us
- More than 20 years in sealant work
- We leave the area clean and tidy
- We are fully insured
- Old sealant always removed completely
See what affects the cost and customer reviews.
How it works
We bring everything the job needs with us. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours for a handful of gaps, and longer for a whole building. A visit to Shenley is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- We measure every gap and note what it’s in and what passes through.
- Unsuitable material such as ordinary foam or silicone is cut out and the gap cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products for your records.
Preparing for the visit
- Clear the area around the work
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Want a quote for fire rated sealant? Please ring 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.