Hertfordshire · England

Welham Green Fire Rated Sealant

Specialist fire rated sealant for Welham Green: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.

  • Gaps left after a refit or conversion
  • Open joints along the top of partitions
  • Old fire sealant that has split or come away

Fire rated sealant for Welham Green homes and businesses

What the job involves on each surface

Flats and HMOs

In flats and HMOs, the walls and floors between homes and common areas need sealing where services pass through. We work through the gaps on your assessment room by room.

Linear gaps

Head-of-wall gaps are often hidden above suspended ceilings. We seal them along their full length so there are no open sections left.

About our fire rated sealant in Welham Green

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. We work on linear gaps, pipe & cable gaps and flats & HMOs, and people most often call us about gaps left after a refit or conversion and gaps around pipes and cables through fire-resisting walls.

Community buildings, schools and small businesses around places like Welham Green have washrooms and kitchens that see a lot of use. Sealant and fire-rated joints there matter as much as in any larger building.

You get a 12-month guarantee, the same in Welham Green as everywhere else we work.

Mr Mastic applicators lined up beside the company vans, one holding a sealant gun
Location
Welham Green (AL9, AL10)
Wider area
Hertfordshire
Cover
12 months on all our work
Price
A clear price before work begins
Telephone
0345 464 0079
Page updated
26 October 2026

Do you need fire rated sealant in Welham Green?

Many open fire-stopping gaps are made after the building is finished. New cables, pipes and data runs go through walls and ceilings and the hole they leave does not always get resealed.

These are the problems we are asked about most:

  • Gaps filled with a product that isn’t fire-rated
  • Seals cut through by electricians, plumbers or data installers
  • Gaps left after a refit or conversion
  • Gaps flagged on a fire risk assessment

For buildings such as Church of St Mary the Virgin, gaps around pipes and cables are worth checking after any building work there.

What your quote should include

  • Whether VAT is included
  • What insurance they hold
  • Who turns up on the day
  • The length of the guarantee

Our hiring checklist

DIY sealant or a professional job?

Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.

Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.

Quotes for fire rated sealant in Welham Green

The quote reflects the job in front of us. We look at:

  • Working hours on commercial sites
  • Which sealant suits the joint
  • Mould in or behind the old joints
  • How easy the joints are to reach

We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email.

Asking for a quote

What to tell us when you ask for a quote:

  • The rough size of the job
  • Photos by email, if that’s easy
  • Whether it’s a home or a business
  • Where the job is, and your postcode

Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job.

Aftercare tips

Looking after new joints is easy, and it makes a real difference:

  • Store the list of sealed gaps with your building paperwork
  • Look in service cupboards and ceiling voids from time to time
  • Do not fill fire-stopping gaps with ordinary foam or silicone
  • Plan fire stopping into any work that goes through walls or floors

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.

Open gaps do not only matter in a fire: noise, draughts and even pests can come through too. Sealing them early helps on every front.

The process

Every visit runs the same way: we check the joints, protect the area around them, carry out the job and tidy away. It normally takes anything from a few hours to several days, depending on how many gaps there are. In a smaller place like Welham Green, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.

  1. Access to each area is agreed so the work can run in order.
  2. We take out any damaged or unsuitable sealant.
  3. Gaps are cleaned of dust and loose material.
  4. We apply and tool the sealant to the product’s tested detail.
  5. Locations and products are written up and any gaps unsuitable for sealant are flagged.

How to prepare

  • For business premises, tell us about site rules or sign-in
  • Tell us about any previous sealing or DIY attempts
  • Tell us if parking is tricky

Ask for a quote

Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and send you a clear quote.

Get a price

Related advice

Work for landlords, hotels and businesses

We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.

Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.

What fire rated sealant looks like in Welham Green

Welham Green is part of Hatfield, one of the post-war new towns. Like the other new towns, Hatfield was planned with its own areas for industry and business, so workplaces sit close to the homes. Their washrooms, kitchens and fire-rated joints need the same upkeep as anywhere. 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.

If you let a flat or house near Welham Green station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. If you look after a building such as St Mary's Church of England Primary School, service openings in fire-resisting walls need checking after any refurbishment.

Welham Green is about 2 miles south of Hatfield, in Hertfordshire. Homes, rented property, offices and hotels in Welham Green can book us for fire rated sealant, old or new, large or small. Every job comes with our 12-month guarantee. Welham Green is one of 381 places in Hertfordshire we cover for fire rated sealant. There’s also a page for London, roughly 17 miles from Welham Green.

Every address in AL9 and AL10 is covered for fire rated sealant. Fire rated sealant is available to properties on Station Road, Old Farmhouse Mews and Vincenzo Close and the roads around them. We also cover the places around Welham Green: North Mymms (1 mile south), Colney Heath (1 mile west), Hatfield (2 miles north), Sleapshyde (2 miles west) and Smallford (3 miles north-west). Further out, we also cover Watford (9 miles south-west), Hemel Hempstead (10 miles west), Stevenage (12 miles north), St Albans (5 miles west), Welwyn Garden City (4 miles north) and Harpenden (8 miles north-west).

Around Welham Green

Around Welham Green, our work takes us to homes and buildings near Brookmans Park, The Hope and Anchor Public House and Chancellor's School. There’s a railway station in Welham Green itself: Welham Green station. Well-known places in the area include Queen Elizabeth II Hospital (3.5 miles north) and The Bunker at Hatfield Police Station (2.3 miles north). Not far away are Gobions Wood.

Map of Welham Green © OpenStreetMap contributors

Your questions about fire rated sealant in Welham Green

Can you help a landlord with a rental near Welham Green station?

Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.

Do you work in hotels near Welham Green?

Yes. Hotel and guest-house work is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.

Is it worth trying it myself?

Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.

What do you put in the joint?

The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.

Can you tell me how many minutes the seal will last?

We don’t give ratings or certificates for our work. Your specification sets the requirement, and we fit a product whose tested details meet it.

Where are you based?

We are based in Crawley, and we work across South East England, London and Scotland.

Are you fully insured?

Yes. We are fully insured, with over 20 years’ experience in sealant work.

Can you match the sealant colour?

Yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job