Digswell fire stopping
Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Digswell and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Unsealed openings around new pipes and cables
- Seals that don’t match their tested detail
- Hidden openings found during inspections
Fire stopping for businesses in Digswell
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Common questions from Digswell clients
Can you seal around new services in a hotel near Digswell?
Yes. We install fire-rated and intumescent sealant where it is specified. Each seal follows the tested detail, and rooms are done in turn.
Will you work in a care home in Digswell without moving residents out?
Yes, with the manager deciding the order and timing of rooms. Tell us about any infection-control or safeguarding requirements and we’ll work to them.
Do you take on small jobs?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.
Do you offer coloured sealant?
It depends on the product specified. Some ranges offer many colours, others very few, so the available colours are confirmed with the quote.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and we’ll price the work to it, flagging anything that needs clarifying.
Which sealant will you use?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Can weather delay the job?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Fire stopping in Digswell, done properly
Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We don’t hold a third-party fire-stopping installer certificate, and we won’t pretend otherwise. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. If you have unsealed joints where partitions meet the slab and fire-rated sealant that has cracked or shrunk back, we can put it right, whatever the surface. Whoever orders the work in Digswell, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In places the size of Digswell, fire-resisting walls and floors are found in schools, care homes, health centres and mixed-use buildings. Around those penetrations, fire-rated sealant is installed if specified, with depth, backing and gap all as tested.
We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Place
- Digswell (AL8, AL7, AL6)
- Region
- Hertfordshire
- Cover
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
What happens if it’s left?
It is cheaper to seal service penetrations as each services package finishes than to come back for them later. While the area is still open, every opening is easy to see and reach, and the right detail can be checked at the time. For buildings in places like Digswell, one well-planned visit beats several small ones, so we’d suggest renewing all the joints that are going, not just the worst.
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.
What you get with us
- Failed material removed, not covered up
- Work to your specification and the manufacturer’s guidance
- Work carried out by CSCS-carded applicators
- One contact handling all your sites
After the work
Regular inspection catches problems early. Specifically:
- Keep product data and details in the fire safety file
- Ask the designer to confirm details early on refits
- Treat an open penetration as a priority repair
- Foam or ordinary sealant is never a fire-seal repair
New services after handover are a common way fire stopping gets breached. Building it into each contractor’s sign-off keeps the walls intact.
Specify fire stopping early on refits, not as an afterthought. Details can then be picked to suit the actual pipes, cables and ducts, and the work runs in step with the M&E.
Towns and villages near Digswell
What else we do in Digswell
Work for main contractors and building owners
For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.
CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
Fire stopping around Digswell: how the place shapes the job
Digswell is about 23 miles from central London. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls, and the gaps need sealing with the specified product. Digswell has several hotels close by, all within 2 miles. In hotels, bedroom and corridor walls are normally fire-resisting, so services added in a refit need sealing with the specified product.
Wherever services are added at a hospital such as Queen Elizabeth II Hospital (to the south of Digswell) the compartment line has to be made good with the specified product. For a unit at a centre such as Howard Centre, which lies south of Digswell, penetration seals are worth checking after each shop fit.
Digswell is about 1 mile north of Welwyn Garden City, in Hertfordshire. Businesses, contractors and managing agents in Digswell can call on us for service penetrations. 371 places across Hertfordshire fall within our area, including Digswell. We also cover London, some 23 miles away.
Postcode districts covered here: AL8, AL7 and AL6. We cover commercial and managed buildings on Adele Avenue, Station Road and Hertford Road and the roads nearby. Nearby places we also cover include Haldens (1 mile south-east), Harmer Green (1 mile north-east), Burnham Green (2 miles north-east), Oaklands (2 miles north) and Tewin (2 miles east) for service penetrations. Bigger towns within reach include Watford (14 miles south-west), Hemel Hempstead (12 miles west), Stevenage (6 miles north), St Albans (7 miles south-west), Harpenden (6 miles west) and Hitchin (10 miles north).
Near you in Digswell
Locally, jobs take us to sites close to Hedgehog pub, Monk's Walk School and Danesbury Park and the streets around them. Digswell has its own railway station: Welwyn North station. Other landmarks nearby include Howard Centre (1.3 miles south) and Datchworth Museum (2.6 miles north-east). Open spaces near Digswell include Tewin Orchard and Hopkyns Wood.
What we are called out for in Digswell
On a busy project, programme pressure can mean fire stopping is rushed or left to whichever trade is closest. That is how unsuitable products and improvised details end up in compartment walls, which then have to be put right.
What tends to prompt an enquiry:
- Fire seals cut back for extra cables and never reinstated
- Snag lists that include open service penetrations
- Improvised or mixed-product fire seals
- Fire-rated sealant that has cracked or shrunk back
For a site team at a college like Oaklands College - Welwyn Garden City Campus (1 mile south of Digswell), fire-rated sealing is best scheduled after the summer works.
Comparing quotes
- The named product and why it was chosen
- Their pre-qualification and accreditations
- Proof of insurance
- The terms of the workmanship guarantee
Diagnose, treat, sign off
Inspect, seal, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. For a site in Digswell, we plan so the whole job is done in one go where possible. Clear photos and measurements help us bring the right products.
- We ask for the product and detail your designer has specified.
- We sort the openings by the detail each one needs.
- Improvised fillers and failed sealant are removed.
- Where the detail needs backing, it goes in at the stated depth.
- We gun the sealant in to the specified depth around each service and tool it.
- Completed areas are checked with you, with the records agreed when we quoted.
Getting the site ready
- Send your site hours and access windows
- For older buildings, check the asbestos register before work
- Tell us which areas need to stay in use
Quotes
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.
Read more
Different surfaces, different methods
Small ducts
Some fire-rated sealant details cover small ducts. Bigger ducts and fire-resisting ductwork are normally handled with other products and we flag that rather than guess.
Plastic pipes
Plastic waste pipes through slabs come up often. The detail decides whether sealant alone is enough.