Mastic sealing for building owners and managing agents in Greenford, Greater London
Work needed on a mastic joint in Greenford? We assess it, carry out the work and guarantee our workmanship for 12 months.
- A mix of products and colours from past repairs
- Draughts at frames across a block
- Brittle perimeter mastic across a building
Mastic sealing in Greenford
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
About our mastic sealing in Greenford
Managing agents and housing associations typically need paperwork before anyone starts. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. We work on shopfronts below residential blocks, balcony and threshold joints and external wall and movement joints, and what we’re called in for most is complaints coming in block by block and draughts at frames across a block. For commercial sealant work in Greenford, you deal with one contact from quote to sign-off, whether it’s one building or several.
London’s ULEZ covers every borough, and parking and loading rules vary street by street. For a block or estate, it helps to know where we can park and stage materials.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Place
- Greenford (UB6, UB5, UB1)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Honest limits
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Substrate edges that need repairing first
- Glazing that needs replacing
- Failed window or door frames, which need a window contractor
Not sure which it is? You can call the office on 01277 525 020 or email the details over and we will tell you honestly before you book.
Joints and surfaces we work on
- Communal kitchens and washrooms
- Balcony and threshold joints
- Shopfronts below residential blocks
- Communal entrances and stairwells
- External wall and movement joints
- Window and door perimeters on blocks
On site: what to expect
Tell us your site hours and access windows and we will plan around them. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. All of Greater London is in the ULEZ, and kerbside space in Greenford can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Before we start on site
- Share the asbestos register for older buildings
- Confirm the product named in the specification
- Point out parking and an unloading spot
Request a quote
The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or speak to us on 01277 525 020 or email drawings and photos if you’d rather talk the job through.
Advice
Owners, agents and contractors
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, and each stage is agreed with your contact.
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.
Greenford: questions and answers
Can you work in a London building with booked loading and goods-lift slots?
Yes, we plan every London job around the building’s own access rules. Share the building’s contractor rules and we’ll work to them. All of Greater London is inside the ULEZ, and our planning allows for it
Is Lyon Way Industrial Estate, near Greenford, within your area?
Yes. Estates, retail parks and business parks around Greenford, Lyon Way Industrial Estate among them, are all within reach. A few photos and the unit address let us price the work.
Do you take on small jobs?
Small jobs are welcome alongside larger packages. Photos and a description are enough to start.
Do you work with property factors and landlords?
We do. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords, and we quote building by building or as a programme.
How many days will you need on site?
That varies with the scale of the job, though a typical visit usually takes one or more days per building, depending on the joint lengths and the access. Larger or phased jobs take longer, and we will give you a timescale with the quote.
Is mastic sealing guaranteed?
A 12-month guarantee covers our work. It covers our workmanship, not later building movement, damage or frame failures.
Is it fine to apply new sealant on top of old?
No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Blocks and managed buildings in Greenford
In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We fit the programme to your notice periods. The 2 miles around Greenford include two care or nursing homes. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.
Buildings close to stations like Greenford station, under half a mile to the north-east of Greenford, are often flats over shops, with frame mastic to keep sound. Site managers at schools like Oldfield Primary School can fit frame mastic into the summer works.
Greenford is about 3 miles north-west of Ealing, in Greater London. We cover Greenford and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 764 places in Greater London, from busy centres to rural villages. For work in that direction, see our London page (11 miles or so).
Commercial sites across UB6, UB5 and UB1 are covered. We cover commercial and managed buildings on Courthope Road, Oldfield Farm Gardens and Greenford Road and the roads nearby. Being close to the A4090 and A4127, Greenford is straightforward for us to reach. Just outside Greenford, we also work in Northolt (1 mile north-west), Perivale (1 mile east), Sudbury (2 miles north-east), Sudbury Hill (2 miles north-east) and Dormers Wells (2 miles south-west). Bigger towns within reach include London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (12 miles east).
Landmarks near Greenford
Recent enquiries here include premises near Ada Lovelace Church of England High School, The Railway pub and Northala Fields. There’s a railway station in Greenford itself: Greenford station. A little further out are London Designer Outlet (3 miles north-east) and Clementine Churchill Hospital (2 miles north). Not far away are Northala Fields and Litten Nature Reserve.
How the quote is worked out
We price every job individually. The things that drive the figure:
- Joint width, depth and condition
- Location, for remote and island sites
- Working within restricted access windows
- The product specified
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Details that help us quote
Whether it’s one area or a whole building, these details speed things up:
- Your programme or deadline
- Drawings or a marked-up plan, if available
- A wide shot and a close-up of the area
- The site address and postcode
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. If you have questions first, ring 01277 525 020 or email the details over.
Places near Greenford
More services for Greenford
Signs you need mastic sealing in Greenford
UV and rain age external sealant. It stiffens, stops stretching and cracks, especially on south and west faces.
Any of the following is a good reason to get the joints checked over:
- Open joints in brickwork or panels
- Leaks at window and door perimeters
- Damaged joints in communal entrances and corridors
- Occupiers reporting cold air round windows
If you manage student housing near a university such as University of West London, 2.4 miles to the south-east of Greenford, the summer turnaround is the time for mastic.
What your quote should include
- What site paperwork they can supply
- Is the sealant right for the movement and the substrate?
- How they’ll work around occupants
- Proof of insurance
Doing it in-house
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong typically costs more in the end than doing them right.