Mastic sealing for building owners and managing agents in Southfields, Greater London
Mastic sealing for Southfields, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Cracked, hardened mastic round windows on a block
- Estate-wide sealant that is simply worn out
- A mix of products and colours from past repairs
Mastic sealing in Southfields
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Mastic sealing in Southfields, done properly
On a residential block, the work happens around people’s lives. The sequence, the areas and the dates are settled with you so you can let residents know what is happening. Entrances and stairwells are kept in use while we work. Most enquiries involve cracked, hardened mastic round windows on a block and old repairs sealed over failed mastic, on communal entrances and stairwells, balcony and threshold joints and external wall and movement joints. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Southfields is the same: the right product in a properly prepared joint.
For managing agents in Southfields, resident access, notice periods and the building’s rules shape the job. We work to the agent’s notice and access plan, so residents know what’s happening.
Our workmanship is guaranteed for 12 months. If our installation lets you down in that time, we return and fix it.
- Location
- Southfields (SW18, SW19, SW17)
- Wider area
- Greater London
- Guarantee
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Block-wide mastic in Southfields
Blocks in London are normally run by managing agents, landlords or housing associations, with residents to notify and access to arrange. We work to your notice and access plan. Southfields has four 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 school such as Floreat Wandsworth Primary School, perimeter mastic on windows and doors is a holiday job. Older community buildings, St John the Divine among them, often have frames of mixed ages whose mastic varies. For owners of several units at places like Rufus Business Centre, which lies south of Southfields, one programme can deal with frame and external mastic across the lot.
Southfields is about 2 miles north-east of Wimbledon, in Greater London. Commercial clients in Southfields can call on us for mastic joints, as part of our coverage of Greater London. Southfields is one of 764 places in Greater London on our list for mastic joints. There’s a separate page for London, roughly 6 miles from Southfields.
Commercial sites across SW18, SW19 and SW17 are covered for mastic joints. If your site is on Burr Road, Acuba Road and Mount Road or close by, send details and we will quote for mastic joints. Close to Southfields, our area also takes in Earlsfield (1 mile south-east), Wandsworth (1 mile north), Summerstown (1 mile south), Battersea (2 miles north-east) and Clapham Junction (2 miles north-east). Further afield, our area takes in London (6 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (4 miles north), St Pancras (6 miles north-east) and Shoreditch (7 miles north-east).
Landmarks near Southfields
We work on buildings around Old Sergeant pub, Southfields Academy and Wandsworth School, among other places. Southfields has its own railway station: Earlsfield station. Nearby you will also find Royal Hospital for Neuro-disability (1 mile west) and Wimbledon Lawn Tennis Museum (1.2 miles south-west). For a walk, there’s Henman Hill and Wandle Meadow Nature Park.
Places near Southfields
What else we do in Southfields
What sealant work can’t fix
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Leaks through the frame itself rather than the perimeter
- Substrate edges that need repairing first
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
If you’re not sure, just speak to us on 01277 525 020 or send photos by email and we will give you a straight answer before you book.
What we seal
- Shopfronts below residential blocks
- Balcony and threshold joints
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
How the job changes by surface
Estate-wide resealing programmes
Using the same products throughout keeps the estate consistent.
External movement joints
Brickwork, blockwork and panel joints let a building move. Once that sealant goes, rain can reach the wall.
Questions we are asked in Southfields
Do you cover business parks and estates near Southfields, such as Rufus Business Centre?
Yes. Estates, retail parks and business parks around Southfields, Rufus Business Centre among them, are all within reach. Photos and a short description are enough for a first look.
Do you take on jobs in Southfields where loading and access are tightly controlled?
Yes. Inductions, permits and timed loading are routine for us in London. The building manager’s rules go straight into our method. We allow for the ULEZ, which covers every borough
Do you seal on top of existing sealant?
No. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
How long before the joints can be used?
We’ll confirm how long the chosen product needs to cure, and sign any area that should be left alone.
What paperwork can you provide?
We are CHAS accredited, a Constructionline member and carry public liability insurance. For specific documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
Can people stay in the building while you reseal?
Occupiers stay in the building throughout. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
On site: what to expect
We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
What we need from you
- Move anything stored against the joints
- Let building users know which areas are affected
- Tell us what induction or permit system the site runs
Getting a fixed quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, call the office on 01277 525 020 or email drawings and photos.
Related advice
Work for main contractors and building owners
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first.
Cost factors for mastic joints
The price varies from site to site. Expect it to depend on:
- Access and working height
- Distance, for remote addresses
- The size and state of each joint
- The total length or number of joints
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
Details that help us quote
We can often quote from photographs and a few details. It helps to include:
- What the building is and how it’s used
- Rough lengths or quantities, or drawings if you have them
- The postcode of the building
- A wide shot and a close-up of the area
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.
After the work
To get the most from the new sealant:
- Look at the sunniest and most exposed elevations first
- Keep a record of when each building was resealed
- Reduce knocks to communal area joints
- Check sealant joints during planned building inspections
Ask residents or tenants to report draughts or leaks round windows early. A quick report keeps a small repair small.
Leaks at window perimeters spoil finishes and can affect frames. Early resealing is far simpler than repairs inside.