Greater London · England
Sand mastic for sash & case windows in Bowes Park, Greater London
Sand mastic for Bowes Park and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic worn away on windows facing the weather
- Draughty sash windows at the surround
- Crumbling sand mastic round a window
Sand mastic for homes and businesses in Bowes Park
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you’re dealing with draughty sash windows at the surround and mastic that needs renewing before redecorating, we can help, on brick reveals, tenement windows and timber door frames alike.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first, and access in Bowes Park is something to talk through when you book.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Bowes Park (N22, N11, N8)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Cracked or broken glass
- Sashes that need overhauling
- Timber that has rotted
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Timber door frames
- Tenement windows
- Sash and case windows
- Period & listed homes
- Stone surrounds
- Brick reveals
FAQs for Bowes Park
Is parking a problem for a job in Bowes Park?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Do you work for landlords with property near Alexandra Palace station?
Yes. We work for landlords and letting agents as well as homeowners. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Can I choose the sealant colour?
In most cases you can choose. We will explain which colours are available and agree one before any work starts.
How long does sand mastic take to harden?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.
How long does the job take?
Most jobs take a few hours for a single window, longer for several, including the preparation. Your quote will say how long we expect yours to take.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
How the job changes by surface
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
Landlords, agents and businesses in Bowes Park
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Towns and villages near Bowes Park
Also in Bowes Park
How we quote for sand mastic
We quote each job individually. This is what makes a difference:
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- The size of the job
- How easy the joints are to reach
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
When you call or email, these details help:
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that is easy
- Access, such as stairs, a lift or height
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
Frames and glazing around Bowes Park
Historic houses like Bruce Castle (about 1.7 miles east) are a reminder that the area around Bowes Park has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking.
For an older house near a landmark such as St Mary's Greek Orthodox Church, the joint between an old wall and a newer frame is usually the first place rain gets in. Bowes Park is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Bowes Park is about 3 miles south-west of Edmonton, in Greater London. Wherever you are in the N22 postcode area, our applicators can take on sand mastic. 764 places in Greater London are on our list, large and small. Our London page covers work nearby, about 7 miles away.
Our applicators cover all of the N22, N11 and N8 postcode area for sand mastic. You will find streets such as High Road, Park Road and Edith Road, and we cover them all. Other places close to Bowes Park include 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). We also work in nearby towns such as 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
We work in homes and buildings around Greek Secondary School of London, Woodside Park and St Thomas More Catholic School, among other places. There’s a railway station in Bowes Park itself: Alexandra Palace station. Well-known places in the area include Broomfield House Museum (1.1 miles north) and The Mall Wood Green (0.5 miles south-east). Not far away are Highgate Hill and Railway Fields.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. In Bowes Park, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- Keep pets and children clear of the area while we work
- Mention any tricky access
- On commercial sites, let us know about site rules
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or email us.
Advice
Signs you need sand mastic in Bowes Park
Shallow joints are a common cause. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
Common reasons people contact us are:
- Old sand mastic that has cracked, crumbled or fallen out
- Silicone on a period window that looks wrong
- Cracked mastic round a front door frame
- Mastic that needs renewing before redecorating
For site and facilities teams at buildings such as Trinity Primary Academy, its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- What the cure time is
- How much experience the applicator has
- What insurance they hold
- What product goes in the joint