Greater London · England
Bowes Park External Mastic
External mastic for Bowes Park and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
- Weathered mastic that no longer stretches
Aftercare tips
Aftercare is simple:
- Never let anyone fill a movement joint with mortar
- Point out the joints to other trades
- Do not let climbing plants root in the sealant
- Have failed joints looked at early
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
About our external mastic in Bowes Park
On houses, flats and commercial buildings across Bowes Park, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. We work on render & cladding joints, concrete & block and brickwork movement joints, and people most often call us about sealant that has lost its bond to the brick or render and failed seals between different materials.
London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so a leaking gutter joint or failed wall joint can affect more than one home. For a flat in Bowes Park, check the lease for who looks after the outside.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Bowes Park (N22, N11, N8)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
Before you book, it’s worth knowing the limits:
- Cracking across the wall rather than at a joint
- Render that’s blown, hollow or coming away
- Structural movement, which needs a surveyor or engineer
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
What happens on the day
The work is kept neat and contained to the area we’re working on. The job usually takes a few hours for a handful of joints, longer for a whole elevation, and we tell you how long to leave it before we go. In Bowes Park, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Keep children and pets away from the work area
- Mention any tricky access
- Let us know about parking restrictions
Ask for a quote
For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Advice
Towns and villages near Bowes Park
Also in Bowes Park
Bowes Park buildings and the weather
London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Alexandra Palace station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. Bowes Park is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Bowes Park is about 3 miles south-west of Edmonton, in Greater London. Our applicators cover external mastic for householders, landlords and businesses in Bowes Park and the surrounding area. 764 places in Greater London are on our list, from the larger towns to small villages. There’s also a page for London, roughly 7 miles from Bowes Park.
Postcode districts we cover here for external mastic: N22, N11 and N8. We cover properties on High Road, Park Road and Edith Road. Close by, we work in Bounds Green (1 mile north-west), Oakthorpe Park (1 mile north), Palmers Green (1 mile north), Arnos Grove (1 mile north-west) and New Southgate (1 mile north-west). Further out, we also cover London (7 miles south), City of Westminster (6 miles south), Marylebone (6 miles south), Kensington (8 miles south-west), St Pancras (5 miles south) and Shoreditch (5 miles south).
Landmarks near Bowes Park
Typical jobs here are in homes near Greek Secondary School of London, Woodside Park and St Thomas More Catholic School and the streets around them. Bowes Park has its own railway station: Alexandra Palace station. Nearby you will also find Broomfield House Museum (1.1 miles north) and The Mall Wood Green (0.5 miles south-east). For a walk, there’s Highgate Hill and Railway Fields.
Questions from Bowes Park
I let a flat near Alexandra Palace station. Can you help?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Can parking be tricky for a visit in Bowes Park?
Parking in Bowes Park, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
How long should I leave it?
It depends on the product and the temperature. We tell you how long to leave it before we go.
Are you ARBOMaster approved?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Do you have insurance?
Yes. Mr Mastic is fully insured.
Can a movement joint be filled with mortar?
No. Rigid materials cannot move with the wall and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Signs you need external mastic in Bowes Park
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Signs it’s time to call us include:
- Panel joints letting water in
- Sealant pulling away from one side of the joint
- Brick movement joints where the sealant has split
- Moss and dirt in joints with no sealant left
Homes close to St Mary's Greek Orthodox Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- How long the guarantee is
- How the surfaces are prepared before sealing
- What happens if the job turns out different
- How much experience the applicator has
Landlord and commercial work in Bowes Park
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
For anyone letting property in or around Bowes Park, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
What affects the quote in Bowes Park
Jobs vary more than people expect. What affects the quote:
- How easy the joints are to reach
- Any mould that needs treating
- Which sealant suits the joint
- The size of the job
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are unsure, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
What to tell us for a quote
You do not need to know the technical terms. Just tell us:
- A few pictures by email, if you can
- The rough size of the job
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
Need a quote? Please ring 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before we start.
Leave it or put it right?
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. We will give you a clear price for the lot.
Why choose Mr Mastic in Bowes Park
- Any old sealant cut out fully, not covered over
- Domestic, commercial and hotel work
- Fully insured
- You choose the colour before work begins
Read what affects the cost and customer reviews.