Mastic sealing for building owners and managing agents in Arnos Grove, Greater London
Sealant work in Arnos Grove for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, with a fixed quote first.
- Open joints in brickwork or panels
- The same joint failures repeated across a portfolio
- Draught complaints from residents or tenants
Mastic sealing for businesses in Arnos Grove
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
What sets the cost
To price the job, we consider:
- The size and state of each joint
- How much there is to seal
- Removal of failed or old sealant
- Working within restricted access windows
The price depends on the quantity of joints, what has to come out first and how the joints are reached. Call for a quote when you are ready.
Details that help us quote
To price the job accurately, we need to understand the site. Send us:
- Photos of the joints, close up and from further back
- Asbestos survey details if the building is older
- The product your specification calls for
- Any dates the work must fit around
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, ring 01277 525 020 or send photos by email.
How we handle mastic sealing in Arnos Grove
We diagnose before we prescribe: which joints have failed, why, and whether sealant is the right answer. Failed mastic is stripped, the faces taken back to sound material, primed where the manufacturer specifies and resealed, with backing rod setting the depth where it’s needed. Site teams most often ask us about leaks at window and door perimeters and window mastic that has split and shrunk, on balcony and threshold joints, communal entrances and stairwells and shopfronts below residential blocks. A single leaking joint is often how a building in Arnos Grove first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.
London’s ULEZ covers every borough, and parking and loading rules vary street by street. For block-wide work, a place to park and store materials saves time on every visit.
Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.
- Place
- Arnos Grove (N11, N14, N13)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Blocks and managed buildings in Arnos Grove
London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. Our programme follows the access you agree with residents. Arnos Grove has six care or nursing homes no more than 2 miles away. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.
Landlords with units on estates such as Brunswick Industrial Estate (0.6 miles north-west of Arnos Grove) can bring frame, door and external mastic across several units into one programme. Buildings close to stations like New Southgate station, 0.6 miles to the west of Arnos Grove, are often flats over shops, with frame mastic to keep sound. Churches, halls and community buildings such as Syro-Malabar Catholic Church of London are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Arnos Grove is about 3 miles north-east of Finchley, in Greater London. Any commercial site in Arnos Grove is covered, whether it’s a single job or part of a planned programme. Arnos Grove is one of 764 places we cover in Greater London. There’s a separate page for London, about 8 miles away.
Postcode districts covered here: N11, N14 and N13 for mastic joints. Streets here include Oak Lane, High Road and York Road, and sites on any of them can send details for a fixed quote. Arnos Grove sits on or close to the A109 and A1004. We also cover New Southgate (1 mile west), Bounds Green (1 mile south), Southgate (1 mile north), Palmers Green (1 mile east) and Oakthorpe Park (1 mile east). Bigger towns within reach include London (8 miles south), City of Westminster (7 miles south), Marylebone (7 miles south), Kensington (9 miles south), St Pancras (6 miles south) and Shoreditch (7 miles south).
Landmarks near Arnos Grove
In Arnos Grove, that means premises near The Ranelagh pub, Broomfield School and Broomfield Park, among other places. The nearest railway station is New Southgate station, about 0.6 miles west of the centre. A little further out are Broomfield House Museum (0.5 miles east) and The Mall Wood Green (1.7 miles south-east). Green spaces nearby include Highgate Hill and Darland's Lake.
Towns and villages near Arnos Grove
Other services in Arnos Grove
How the job changes by surface
Window and door perimeters on blocks
We usually work through a block’s windows in a planned order. How each joint is reached is agreed at quote stage.
Commercial and mixed-use buildings
Commercial occupiers normally stay open during the work so the work is phased.
Owners, agents and contractors
As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Arnos Grove can form part of a wider programme.
Leave it or put it right?
Failed perimeter mastic lets cold air in around frames and the windows typically get the blame. Resealing the perimeters is often the simpler fix when the frames themselves are sound. In a London building, a failed joint rarely affects only one party. Putting it right early is less disruptive than dealing with the consequences.
The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.
Why appoint us
- Constructionline member
- Work to your specification and the manufacturer’s guidance
- Standard and matched colours in many product ranges
- One number for every site we cover
Take a look at our cost guide and our accreditations and insurance.
Arnos Grove: questions and answers
Does your area include sites such as Brunswick Industrial Estate, near Arnos Grove?
Yes. We cover Arnos Grove and the area around it, including industrial estates, business parks and retail parks such as Brunswick Industrial Estate. A few photographs and the unit address let us price the work.
Can you quote for a block close to New Southgate station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Photos of each elevation help us quote accurately.
How long before the joints can be used?
We will confirm how long the chosen product needs to cure, and sign any area that should be left alone.
How do you handle work on occupied blocks?
Residents and tenants carry on as normal. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.
Is asbestos a concern with old mastic?
Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it, and if it’s suspected, work stops until it’s tested.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
Do you work for managing agents and housing associations?
Yes, that’s exactly who this service is for. We work through buildings in a planned order so you can plan around it.
After the work
To get the most from the new sealant:
- Prioritise elevations facing the weather
- Keep bins and bikes away from communal door frames
- Log resealing dates block by block
- Share the asbestos register when you send details
Add mastic joints to your cyclical inspections. Check for splits, open joints, brittle mastic and lifting edges, and note the building and elevation.
The longer failed joints are left, the more likely the substrate edges break up. Then the edges may need repairing first and the job grows.
From enquiry to sign-off
The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. All of Greater London is in the ULEZ, and kerbside space in Arnos Grove can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- A building-by-building inspection lists the failed joints.
- 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.
Preparing the site
- For older buildings, check the asbestos register before work
- Send your site hours and access windows
- Have the specification and drawings to hand
Ask for a quote
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’ll fill any gaps with a visit.