Hertfordshire · England
Fire Rated Sealant in Marshalswick
Specialist fire rated sealant for Marshalswick: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps filled with a product that is not fire-rated
- Joints picked up in a fire-stopping survey
- Fire seals that have cracked with movement
Fire rated sealant for homes and businesses in Marshalswick
Fire stopping only performs as intended if it’s done to the detail: correct depth, correct backing and a product suited to the surfaces. That’s the part we focus on, gap by gap. We work on door frames, plasterboard & masonry and linear gaps, and common reasons people get in touch are new service routes left unsealed after building work and sealant items on a fire risk assessment action list.
For a pub, café, guest house or shop in or near Marshalswick, the washrooms and kitchen need the same attention as a big site, and fire-rated sealant around service openings should be restored after new pipes or cables go through.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Where
- Marshalswick (AL4, AL1, AL3)
- Region
- Hertfordshire
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Keep photos of seals that will be hidden
- Tell trades working in the building that fire seals must be put back
- Include fire stopping when you schedule refits
- Report cracked or damaged seals as soon as you notice them
Let contractors know where fire stopping has been done, and make sure anything they disturb is resealed with a suitable product. A lot of damaged fire stopping comes from later work.
Any job that breaks through a wall or ceiling should include resealing. Catching it then saves a separate visit later.
Do you need fire rated sealant in Marshalswick?
Lots of unsealed gaps appear long after the building was completed. New cables, pipes and data runs go through walls and ceilings and the hole round the new service isn’t always sealed again.
Keep an eye out for these signs:
- Linear gaps at the head of walls
- Gaps filled with a product that isn’t fire-rated
- Fire stopping disturbed by later work
- Gaps flagged on a fire risk assessment
Managing a site like St John Fisher Roman Catholic Primary School? Then fire-stopping around service openings should be restored whenever new services go in.
Before booking anyone
- What the cure time is
- Whether they’re fully insured
- The length of the guarantee
- Which sealant they’ll use, and why
What happens on the day
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before any work begins. Most jobs take from a few hours to a few days, depending on the number of gaps and the access. Parking around Marshalswick is usually easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We go through the gaps on your list or survey and check each one’s size and substrate.
- We remove any old or unsuitable filler and clean the gap.
- We put in whatever backing or fill the product detail specifies.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- Finally, we list where we worked and what we used, for your records.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
- Mention any parking rules near the property
Ask for a quote
Every job is quoted individually. Simply phone 0345 464 0079 or drop us an email and describe the job.
Read more
Fire rated sealant in Marshalswick: local notes
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 St Albans station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. Community buildings like Saint Mary's are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking.
Marshalswick is about 1 mile north-east of St Albans, in Hertfordshire. If you need fire rated sealant in Marshalswick, it’s easy to get a quote: please ring 0345 464 0079 or email us. We’re based in Crawley and cover Hertfordshire. Our Hertfordshire coverage runs to 381 places, and Marshalswick is one of them. We also work in London, about 21 miles from Marshalswick.
Postcode districts we cover here for fire rated sealant: AL4, AL1 and AL3. Local streets include Milvus Road, Jersey Lane and Sandpit Lane, all of which we cover. We also cover Sandridge (1 mile north), Bernards Heath (1 mile west), St Albans (1 mile south-west), Childwick Green (2 miles north-west) and Sopwell (2 miles south-west). Larger places within reach include Watford (8 miles south-west), Hemel Hempstead (7 miles west), Stevenage (11 miles north-east), Welwyn Garden City (5 miles north-east), Harpenden (4 miles north-west) and Hitchin (13 miles north).
Around Marshalswick
Around Marshalswick, our work takes us to homes and buildings near The Baton pub, Sandringham School and Clarence Park, among other places. The nearest railway station is St Albans station, about 1.3 miles south-west. Well-known places in the area include St Albans Musical Museum (0.8 miles south-west) and The Maltings (1.6 miles south-west). Green spaces nearby include The Wick Local Nature Reserve and Verulamium Lake.
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
What the job involves on each surface
Masonry and concrete
For masonry and concrete, we use a product tested in that substrate. The gap is cleaned of dust first.
Door frames
Frame gaps are generally hidden behind the architrave. We seal any open gap to the product’s tested details before the trim goes back.
Quotes for fire rated sealant in Marshalswick
Your quote is based on your job. We look at:
- Whether the work is at height
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- The address or postcode of the job
- A few photos by email, if you can
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
For fire rated sealant in Marshalswick, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
FAQs for Marshalswick
Do you work for landlords with property near St Albans station?
Yes. We work for landlords and letting agents as well as householders. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is Marshalswick in your area for fire rated sealant?
Yes. We work across London and the South East, and Marshalswick is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Do you have insurance?
Yes. We are fully insured.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Do you remove the old sealant?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Can you work in occupied buildings?
Yes. We work in flats, HMOs, schools, offices and other commercial buildings, including occupied ones. We agree access and the order of work with you first.
Is there a guarantee?
Yes, always. There’s a 12-month guarantee on every job, wherever you are.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too in Marshalswick and across Hertfordshire. We can quote a run of properties together.