Greater London · England
Sand Mastic in Wood Green
Sand mastic for Wood Green, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Wind and rain getting in round a sash window
- Mastic worn away on windows facing the weather
- Silicone on a period window that looks wrong
About our sand mastic in Wood Green
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. We are often asked to deal with tired mastic found when preparing windows for paint and weathered mastic on the most exposed windows, on timber door frames, sash and case windows and tenement windows.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, letting in draughts and water.
You are covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or email us.
- Where
- Wood Green (N22, N8)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Wood Green
Over the years, sand mastic weathers. It hardens, cracks and starts to come away on the stone or timber.
Common reasons people contact us include:
- Gaps between timber frames and stone or brick
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
- A silicone bead on a sash window that spoils the look
Schools such as St Michael's CofE Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Before booking anyone
- What preparation is included
- Whether the sealant suits the joint
- The length of the guarantee
- How long to leave it before use
Places near Wood Green
More services for Wood Green
Your questions about sand mastic in Wood Green
Can you help a landlord with a rental near Alexandra Palace station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can call 0345 464 0079 or email us with the details for a clear quote.
Is Wood Green in your area for sand mastic?
Yes. Our work covers London and the South East, and Wood Green is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear quote.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We’ll explain what to expect before we leave.
Can you quote for more than one area?
Yes. Just list everything you need.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or drop us an email.
How to look after the new joints
So the new joints stay in good condition:
- Sort the mastic before the decorators arrive
- Check with your local planning authority if your home is listed
- Ask us before painting near the mastic
- Avoid heavy scraping on the mastic joint
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
An open joint round the box lets weather through. Left, the gap tends to get bigger.
How it works
We keep the work tidy and contained to the joints we’re treating, so you can get on with your day. The job usually takes anything from a few hours to a full day, depending on how many windows, and we explain the cure time before we leave. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Clear the area around the work
- Let us know about parking restrictions
How to get a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Why deal with it now?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
The cost reflects the work involved, not guesswork. That is why we ask about the job first and agree the price before starting.
Why choose Mr Mastic in Wood Green
- We are fully insured
- Arbo and Everbuild products
- Tidy, careful work
- Every job guaranteed for a year
Take a look at how sealant jobs are priced or customer reviews.
How we quote for sand mastic
For a quick quote, just ask. The main things that affect it are:
- How easy the joints are to reach
- The size of the job
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- Where the property is
For sand mastic in Wood Green, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Windows and doors in Wood Green
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. The South East is one of the drier parts of the UK, 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 cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near Church of St Michael and All Angels, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Wood Green is about 3 miles south-west of Edmonton, in Greater London. Homes, rented property, offices and hotels in Wood Green can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. 764 places in Greater London are on our list, from the larger towns to small villages. There’s also a page for London, about 7 miles away.
All of N22 and N8 is within our area for sand mastic. Local streets include Vincent Square, Station Road and Gathorne Road, and we cover them all. Wood Green is on the B151, so it’s easy for us to get to with everything needed for sand mastic. Other places close to Wood Green include Noel Park (1 mile south-east), Turnpike Lane (1 mile south), Hornsey (1 mile south-west), Crouch End (1 mile south-west) and Stroud Green (2 miles south). 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).
Local landmarks in Wood Green
Locally, jobs take us to homes and businesses close to St Thomas More Catholic School, Woodside Park and The Nag's Head pub. The nearest railway station is Alexandra Palace station, about 0.5 miles west of the centre. Nearby you will also find Broomfield House Museum (1.3 miles north) and The Mall Wood Green (less than half a mile south). Green spaces nearby include Railway Fields and Highgate Hill.
What the job involves on each surface
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we’ll confirm access.
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.