Farthing Street construction mastic
Looking for construction mastic in Farthing Street? It’s simple: send details, get a quote, we seal, guaranteed.
- Sanitary sealant damaged by following trades
- Missed perimeter joints on a new elevation
- Oversized or tapered gaps around new frames
Construction mastic for businesses in Farthing Street
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Sites and facades in and around Farthing Street
Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Farthing Street. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.
When units on a site such as Glebe Farm Business Park, 0.8 miles to the west of Farthing Street, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. School extensions, at buildings such as Downe Primary School, usually run to the summer holidays, mastic included. Further education sites such as Shaftesbury Nash College (2.7 miles north-west of Farthing Street) are extended and refurbished from time to time, with mastic often programmed into the summer break.
Farthing Street is about 4 miles south-west of Orpington, in Greater London. Any commercial site in Farthing Street is covered. We work across 764 places in Greater London, from busy centres to rural villages. Sites around London have their own page, roughly 12 miles from Farthing Street.
If you need construction mastic in BR6, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. We cover commercial and managed buildings on Farthing Street, New Road Hill and Orange Court Lane and the roads nearby. Close to Farthing Street, our area also takes in Downe (1 mile south-east), Leaves Green (1 mile south-west), Hazelwood (1 mile south-east), Keston (1 mile north-west) and Farnborough (1 mile north-east). Further afield, our area takes in London (12 miles north-west), City of Westminster (15 miles north-west), Marylebone (15 miles north-west), Kensington (15 miles north-west), St Pancras (14 miles north-west) and Shoreditch (14 miles north-west).
Local landmarks in Farthing Street
In Farthing Street, that means premises near Darrick Wood School, South Park and The Queens Head pub, among other places. For rail, the closest station is Orpington station, about 2.6 miles north-east. A little further out are Princess Royal University Hospital (1.4 miles north) and Crofton Roman Villa (2.5 miles north-east). The countryside around Farthing Street includes Betsom's Hill and West Kent Golf Course nature reserve.
How we handle construction mastic in Farthing Street
The programme rarely stands still, so the mastic package has to flex with it. The sequence is set with the site team and updated as plots or floors are handed over. Sealing too early only means coming back once others have damaged it. The enquiries we see most involve a mastic package split between trades with no clear owner and internal caulk splitting as the building dries out, across internal decorators’ caulk, floor and skirting junctions and window and door perimeters. Whether you call it commercial sealant work, mastic application or joint sealing, in Farthing Street it comes down to the same thing: the right product in a properly prepared joint.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Where
- Farthing Street (BR6)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
For managing agents and facilities managers
Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
Building owners and managing agents use us on everything from one building to a spread of sites around Farthing Street. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Looking after the joints
For the best life from the joints:
- Flag uneven or tapered frame gaps early
- Keep product details for future maintenance
- Ask cleaners to use soft cloths around fresh sealant
- Allow flexibility for external sealing in damp or cold weather
At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later. Tell us what records you need and we will confirm with the quote.
Frames with gaps too wide for sealant need sorting before the mastic goes on. Filling a wide gap with sealant alone sets up a failure. We flag them as soon as we see them.
Our process
Site rules come first: signing in, inductions and any permit to work. With the paperwork done, we take the joints in the sequence agreed with you. Planning a London job such as one in Farthing Street starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we’ll schedule to suit.
- Drawings, specification and programme come to us.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Joints are prepared, backed and sealed to the specification.
- Snags are cleared and the package signed off with our 12-month guarantee.
Before we start on site
- Make sure the joints can be reached
- Share the asbestos register for older buildings
- Tell us which areas need to stay in use
Quotes
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 will arrange a site visit if anything is unclear.
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When it isn’t the sealant
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Designing joint widths or choosing the specification (that sits with the designer)
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Damage to finishes by other trades after we’ve sealed
If you are not sure, just give us a call on 01277 525 020 or email drawings and photos and we will give you a straight answer.
What we seal
- Internal decorators’ caulk
- Floor and skirting junctions
- Brick and block movement joints
- Cladding and panel joints
- Window and door perimeters
- Sanitary and kitchen joints
Different surfaces, different methods
Bathrooms, en suites and washrooms
On multi-unit schemes, consistency matters across hundreds of bathrooms. One applicator team gives the same finish everywhere, plot by plot or floor by floor.
Snagging before handover
Damaged, missed or untidy joints make up most snag lists. Snagging can be included or priced separately.
What affects the price in Farthing Street
A fixed quote reflects the actual work. It takes account of:
- Induction, permit and paperwork requirements
- Travel to remote or island sites
- Whether old sealant has to be cut out first
- How much there is to seal
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
What we need to price the job
Diagnosis starts before we arrive. Let us know:
- The asbestos register, for older buildings
- Approximate linear metres or a joint schedule
- Whether the building will be occupied during the work
- Access details, including height
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call 01277 525 020 or send details through our quote form.
Questions about Farthing Street
Can you work in a London building with booked loading and goods-lift slots?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Share the building’s contractor rules and we’ll work to them. The ULEZ covers the whole of Greater London, which we allow for
Is a hospital such as Princess Royal University Hospital somewhere you can work?
Yes, provided the work is planned with the site’s estates team. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
What does a mastic package usually include?
Window and door perimeters, internal decorators’ caulk where specified, sanitary joints, kitchens, movement joints and snagging. The scope follows your specification.
How long does a job like this take?
The duration is planned around your programme and the access we are given. You’ll have an expected duration with the quote.
Can the sealant be colour-matched?
Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We’ll confirm the colours available for the specified product.
Do your applicators hold CSCS cards?
Our applicators are CSCS-carded, and we hold CHAS accreditation and Constructionline membership. We confirm any paperwork you need with the quote.
Do you take on mastic snagging only?
Yes. Send the snag list or photographs and we will price it, with the work timed to your handover date.