Hertfordshire · England
Fire-rated sealant in Langley, Hertfordshire
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homes and businesses in Langley and across Hertfordshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Holes left by a change of layout
- Ordinary sealant used where a fire-rated product was needed
- Linear gaps at the head of walls
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
About our fire rated sealant in Langley
Bigger jobs can be worked through in stages, flat by flat or floor by floor, with each location and product recorded. That record is useful for your files and for whoever looks at the building next. We work on pipe & cable gaps, flats & HMOs and plasterboard & masonry, and the jobs we see most are new service routes left unsealed after building work and gaps filled with a product that isn’t fire-rated.
Somewhere as small as Langley, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. Each still needs sound sealant in its washrooms and kitchens, and fire-rated joints where services pass through walls.
All our work comes with a one-year guarantee.
- Place
- Langley (SG4)
- Region
- Hertfordshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
After the cure time, these simple habits help:
- Plan fire stopping into any work that goes through walls or floors
- Photograph sealed gaps before they’re covered up
- Look in service cupboards and ceiling voids from time to time
- Ask which product was used before you paint
File the record of locations and products with your fire safety paperwork. It helps whoever checks the building next.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Closing it is usually a straightforward job.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Different surfaces, different methods
Service penetrations
New gaps tend to show up where services have been added. We clean out what’s there and reseal to the right depth with backing where the detail needs it.
Door frames
We deal with the gap around the frame, not the door. Doors, seals and closers are for a door specialist, and we will say if we spot a problem with them.
Commercial buildings in Langley
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 look after a building such as The Thomas Alleyne School, service openings in fire-resisting walls need checking after any refurbishment.
Langley is about 3 miles south-west of Stevenage, in Hertfordshire. Every kind of property in Langley is covered for fire rated sealant, old or new, large or small. The work is guaranteed for a year. Langley is one of 381 towns and villages in Hertfordshire where we work. Our London page covers work nearby (27 miles or so).
Here we cover the SG4 postcode area for fire rated sealant. If you need fire rated sealant at a property on London Road and Village Street or a nearby road, we can help. Close by, we work in Langley Bottom (1 mile north-west), Rush Green (1 mile north-west), St Paul's Walden (1 mile west), Old Knebworth (2 miles south-east) and Driver's End (2 miles south). Larger places within reach include Hemel Hempstead (13 miles south-west), Stevenage (3 miles north-east), St Albans (10 miles south-west), Welwyn Garden City (6 miles south), Harpenden (7 miles south-west) and Hitchin (5 miles north).
Landmarks near Langley
Around Langley, our work takes us to homes and buildings near Concerts at Knebworth House and Farmers Boy Public House and the streets around them. Langley’s nearest station is Stevenage station, about 1.5 miles north-east of the centre. Well-known places in the area include Lister Hospital (2.7 miles north) and Wymondley Castle (3.7 miles north). For a walk, there’s Ridlins Mire.
Common questions in Langley
Do you cover smaller places like Langley?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Langley for fire rated sealant?
Yes. Our work covers London and the South East, and Langley is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Can ordinary silicone be used in a fire-stopping gap?
No. Ordinary silicone, caulk or foam isn’t tested as fire stopping. We cut it out and reseal with a fire-rated product.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can I choose the sealant colour?
Most of the time, yes. We will explain which colours are available and agree one before we start.
Do you provide details of the products used?
Yes. When the job is done, we give you the locations and products. Tell us if your assessor needs it in a particular format.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
Can you fill the gap behind a fire door frame?
Yes, where the gap suits a sealant detail. Our work is the gap around the frame and we will tell you if we spot problems with the door.
Common problems we fix in Langley
Movement in the structure can open gaps too: a seal that cracks or pulls away leaves a path for smoke. Damage from cleaning, knocks and maintenance adds to it.
The problems people generally mention when they call include:
- Open holes round services passing through fire walls
- Holes left by a change of layout
- Old fire sealant that has split or come away
- Standard silicone or caulk in a fire-stopping gap
For landlords with property near Stevenage station, any gap left by new services in shared walls should be closed with a fire-rated product.
Questions to ask before booking
- Whether the sealant suits the joint
- What insurance they hold
- Whether VAT is included
- Which colour the sealant will be
How the visit works
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the work takes a few hours for a handful of gaps, and longer for a whole building in most cases. Somewhere like Langley needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- Each gap is measured and its substrate and service noted.
- Any non-fire-rated filler is removed and the faces cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Tell us about any water getting in
- Tell us if parking is tricky
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
Related advice
Nearby places to Langley
More services for Langley
Why it’s worth doing now in Langley
Sealant is not the fix for every opening. 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. Older cottages and farmhouses around Langley can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why us?
- 4.9 on Google from 180+ five-star reviews
- Neat joints and a tidy finish
- ARBOMaster approved applicator
- Over 20 years’ experience
Read our cost guide or our reviews.