Fire-rated sealing and fire stopping in Bishopsgate, Surrey
Sealant work in Bishopsgate for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.
- Unsealed openings around new pipes and cables
- Damaged fire seals in risers and voids
- Fire sealant pulled out of the opening
Fire stopping across Bishopsgate
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our fire stopping in Bishopsgate
We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We hold no third-party fire-stopping installer certificate, and we won’t pretend otherwise. We install the specified fire-rated sealant to its tested detail, and our workmanship carries a 12-month guarantee. If you are dealing with damaged fire seals in risers and voids and fire-rated sealant that has cracked or shrunk back, we can help, on joints between fire-resisting walls and floors, small duct penetrations where the tested detail allows and service gaps in risers alike. Searching for sealant specialists in Bishopsgate? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Rural conversions around Bishopsgate can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.
We stand by our work with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.
- Location
- Bishopsgate (TW20)
- Wider area
- Surrey
- Guarantee
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
What the job involves on each surface
Masonry and concrete
Core-drilled holes are neat; broken-out ones rarely are. The gap is measured at the widest point so we know it sits within the tested range, and any that don’t are flagged.
Small ducts
Ducts are only sealed with sealant where the detail allows it. Dampers and ductwork systems themselves are outside our work.
Where services cross fire walls in Bishopsgate
Bishopsgate lies roughly 22 miles out from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls; the gaps need the specified seal. A 2-mile radius around Bishopsgate takes in a number of hotels. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal.
For a hospital such as King Edward VII Hospital, which lies north-west of Bishopsgate, penetration sealing is typically phased ward by ward, with infection-control rules agreed first. Tenant changes at parks like The Green Business Centre (to the east of Bishopsgate) bring new data and services, and openings through fire-resisting walls need the specified seal.
Bishopsgate is about 2 miles north-west of Egham, in Surrey. We cover Bishopsgate and the rest of Surrey, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Bishopsgate is one of 379 places we cover in Surrey. There’s a separate page for Reading, about 17 miles away.
Postcode districts covered here: TW20. If your site is on Bishopsgate Road, Ridgemead Road and Wick Lane or close by, send details and we’ll quote for service penetrations. Just outside Bishopsgate, we also work in Englefield Green (1 mile south-east), Egham Wick (1 mile south), Old Windsor (1 mile north), Wraysbury (2 miles north-east) and Egham (2 miles south-east). Bigger towns within reach include Guildford (13 miles south), Woking (9 miles south), Camberley (10 miles south-west), Epsom (15 miles south-east), Ewell (15 miles south-east) and Walton-on-Thames (9 miles south-east).
Near you in Bishopsgate
Recent enquiries here include premises near The Barley Mow Public House, Englefield Green Infant School and Nurseries and Windsor Great Park, among other places. The nearest railway station is Egham station, roughly 1.8 miles east. Well-known places in the area include Berkshire Yeomanry Museum (2.4 miles north-west) and Windsor Castle (3.2 miles north). For a walk, there’s St Ann's Hill and Virginia Water Lake.
What we can’t put right
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Issuing fire ratings or certificates for seals
- Large openings beyond what any sealant detail covers
- Fire doors, dampers or other fire safety equipment
Not sure which it is? You can speak to us on 01277 525 020 or email the details over and we will tell you honestly.
Surfaces we seal
- Small duct penetrations where the tested detail allows
- Cable penetrations
- Linear gaps at wall heads
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Pipe penetrations
Signs you need fire stopping in Bishopsgate
Some seals fail because the wrong product went in: expanding foam or a general-purpose sealant pushed into a gap to tidy it. The opening looks sealed but has no fire test evidence behind it.
Things that normally lead to an enquiry:
- Damaged fire seals in risers and voids
- Unsealed joints where partitions meet the slab
- Fire sealant pulled out of the opening
- Hidden openings found during inspections
Hotels like The Lodge Hotel (to the south-east of Bishopsgate) are refurbished in phases, and each phase can open up compartment walls.
Questions to ask before you book
- Will CSCS-carded applicators be on site?
- The terms of the workmanship guarantee
- Will RAMS and insurance details be available?
- Their pre-qualification and accreditations
Diagnose, treat, sign off
The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. Jobs in and around smaller places like Bishopsgate are normally planned as a single visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.
- The specification and schedule come first, so we know which details apply.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- Foam, ordinary sealant and debris come out.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
Getting the site ready
- Tell us your opening times and when work is allowed
- Move anything stored against the joints
- Warn occupants and staff about the work
Getting a fixed quote
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we’ll arrange a site visit if anything is unclear.
Related advice
Should maintenance staff do it?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Towns and villages near Bishopsgate
What else we do in Bishopsgate
Questions we are asked in Bishopsgate
Is Bishopsgate too far out for you?
No. Places such as Bishopsgate are covered as much as the big towns. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.
Can you work on a hospital site such as King Edward VII Hospital?
Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.
Do you seal openings left by new services?
Yes. Share the penetration schedule and product details and a fixed quote follows. Work can run area by area behind the M&E trades keeping pace with the programme.
Can weather delay the job?
Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
How many days will you need on site?
We plan the time on site around your programme and access. You’ll have an expected duration with the quote.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
What about RAMS and site documents?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
What affects the price in Bishopsgate
Each job is priced on its own details. The main factors are:
- Joint width, depth and condition
- Specialist products, such as fire-rated or hygienic sealants
- Whether the work must be split into stages
- Location, for remote and island sites
The specified product makes a difference, and so does the preparation. Access, phasing and site requirements come into it too.
What we need to price the job
We can often quote from photographs and a few details. It helps to include:
- Your programme or deadline
- Whether an asbestos survey exists
- Rough lengths or quantities, or drawings if you have them
- The product your specification calls for
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, phone 01277 525 020 or email us.