Farthing Street mastic sealing
Mastic sealing for building owners, managing agents and housing associations across Farthing Street, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Window mastic that has split and shrunk
- A mix of products and colours from past repairs
- Movement joints with sealant missing
Need mastic sealing in Farthing Street?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Site staff or a sealant specialist?
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
How we handle mastic sealing in Farthing Street
For blocks and buildings in Farthing Street and across Greater London, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Addresses, photos of typical joints and a rough idea of quantities let us give a quick quote, and site visits can be arranged. We work on communal entrances and stairwells, external wall and movement joints and window and door perimeters on blocks, and the failures we’re asked to look at most are draughts at frames across a block and worn sealant at communal door frames. A specialist sealant contractor works differently from a general builder: on jobs in Farthing Street, preparation and product choice get the time they need.
For managing agents in Farthing Street, resident access, notice periods and the building’s rules shape the job. Work is planned with the agent so residents get notice and access is arranged in advance.
Whoever the client is, the cover is the same: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.
- Place
- Farthing Street (BR6)
- Wider area
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
What happens if it’s left?
Resealing ahead of leaks keeps it to a maintenance task. Once water has tracked in, the repair list grows, and the complaints come with it. Getting scaffold, permits or access booked in Farthing Street takes effort, so while access is arranged it pays to renew all failing joints, not just the worst.
What a job costs comes down to the quantity of joints, how much old material needs removing and the access. Call for a fixed quote when you are ready.
Why clients in Farthing Street choose us
- Constructionline member
- Colours chosen to suit frames, cladding or finishes where possible
- Colours confirmed for the specified product
- A fixed quote before work starts
Read how commercial sealant jobs are priced or our accreditations.
Diagnose, treat, sign off
We follow your site rules from the start: signing in, inductions and any permit to work. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. All of Greater London is in the ULEZ, and kerbside space in Farthing Street can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We inspect the joints, building by building, and record what has failed and why.
- A fixed quote follows, split by block or building if that suits you.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
What we need from you
- Tell us your opening times and when work is allowed
- For older buildings, check the asbestos register before work
- Confirm the product named in the specification
Request a quote
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, phone 01277 525 020 or email drawings and photos.
Read more
Common problems we fix in Farthing Street
The edges of the material itself sometimes break away, such as crumbling render, brick arrises or frame edges. We will tell you if the joint edges need repairing before resealing.
If one of these sounds familiar, it’s time for a closer look:
- Draught complaints from residents or tenants
- Movement joints with sealant missing
- Damp patches beside frames
- Brittle perimeter mastic across a building
Historic properties like Down House (1 mile south of Farthing Street) show the age of some local stock, where frame mastic must suit soft brick or stone.
What your quote should include
- Their approach to joint depth and backing
- How they handle RAMS and site documents
- Will failed sealant be removed rather than covered?
- Their plan for phasing and protecting the area
How the job changes by surface
Estate-wide resealing programmes
Priority order can follow condition, complaints or your maintenance plan. Quotes can be per block or for the full programme.
External movement joints
Brickwork, blockwork and panel joints let a building move. Once that sealant goes, rain can reach the wall.
Looking after buildings in and around Farthing Street
Farthing Street has two care or nursing homes no more than 2 miles away. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents. For a London block, the agent or landlord normally handles notices to residents and access to flats. We work to your notice and access plan.
Trustees of buildings like St Mary's Church can bring frame and external mastic into a planned maintenance list. Property owners at sites such as Glebe Farm Business Park, 0.8 miles west of Farthing Street, can have mastic renewed between lettings.
Farthing Street is about 4 miles south-west of Orpington, in Greater London. If you are looking for mastic sealing in Farthing Street, we can help. Across Greater London, 764 places are covered, including Farthing Street. London is covered too, some 12 miles away.
Anyone looking for mastic sealing in BR6 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are Farthing Street, New Road Hill and Orange Court Lane, and sites on any of them can send details for a fixed quote. 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). Bigger towns within reach include 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).
Near you in Farthing Street
Around Farthing Street, our work takes us to commercial buildings near Darrick Wood School, South Park and The Queens Head pub. The closest station to Farthing Street is Orpington station, about 2.6 miles north-east of the centre. Other landmarks nearby include Princess Royal University Hospital (1.4 miles north) and Crofton Roman Villa (2.5 miles north-east). Green spaces nearby include Betsom's Hill and West Kent Golf Course nature reserve.
Keeping the joints sound
Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:
- Encourage occupiers to report problems at frames
- Share your contractor requirements early
- Check the asbestos register before any old mastic is disturbed
- Group repairs into a planned programme
Log the date and extent of the resealing for each block. It helps plan the next round and gives you a history.
Budgets are easier to plan when sealant is part of planned maintenance. A programme can start with the worst buildings so spending is spread.
Nearby places to Farthing Street
Other services in Farthing Street
Farthing Street: questions and answers
Is Glebe Farm Business Park, near Farthing Street, within your area?
Yes. Estates, retail parks and business parks around Farthing Street, Glebe Farm Business Park among them, are all within reach. A few photos and the unit address let us price the work.
Can you quote for a block close to Orpington station?
Yes, we work for agents, landlords and housing associations with blocks of every size. Photos of each elevation help us quote accurately.
Will you just go over the old sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Do you work for managing agents and housing associations?
Yes, block and estate work is a core part of what we do. We work through buildings in a planned order so you can plan around it.
How long will the new sealant last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
Can you seal joints high up on a block?
It depends on the building. We agree access with you at quote stage so the fixed quote reflects it.