Greater London · England
Sand mastic for sash & case windows in Palmers Green, Greater London
Professional sand mastic in and around Palmers Green, with old sealant always removed completely and a 12-month guarantee.
- Mastic round period door frames that has failed
- Mastic that needs renewing before redecorating
- Draughts and rain around sash boxes
Why act early in Palmers Green
If you’re redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
Combining jobs into one visit is usually more efficient than separate visits. We will send you a clear quote for the lot.
Why choose Mr Mastic in Palmers Green
- ARBOMaster approved applicator
- Trusted Arbo and Everbuild sealants
- We never seal over old sealant
- Fully insured
See what affects the cost and what customers say.
Sand mastic in Palmers Green
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. If you have patchy fillers round a sash window and open joints round the window box, we can put it right, whatever the surface.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking.
Every job comes with a one-year guarantee, wherever you are in Greater London.
- Where
- Palmers Green (N13, N22, N11)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Windows and doors in Palmers Green
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Bruce Castle (about 1.9 miles south-east) are a reminder that the area around Palmers Green has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around Palmers Green United Reformed Church, the joint between an old wall and a newer frame is usually the first place rain gets in. Palmers Green is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Schools such as St Anne's Catholic High School for Girls are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Palmers Green is about 6 miles north of St Pancras, in Greater London. We provide sand mastic to homes and businesses in Palmers Green and the surrounding area. Palmers Green is one of 764 towns and villages in Greater London where we work. London is on our list too, about 8 miles from Palmers Green.
Postcode districts we cover here for sand mastic: N13, N22 and N11. Streets in the area include Oak Lane, Fox Lane and York Road, all of which we cover. Being close to the A105 and A1004, Palmers Green is simple for us to get to for sand mastic. We also cover the places around Palmers Green: Oakthorpe Park (1 mile south-east), Arnos Grove (1 mile west), Bounds Green (1 mile south-west), Bowes Park (1 mile south) and Southgate (1 mile north-west). Further out, we also cover London (8 miles south), City of Westminster (7 miles south), Marylebone (7 miles south), Kensington (9 miles south-west), St Pancras (6 miles south) and Shoreditch (6 miles south).
Near you in Palmers Green
Typical jobs here are in homes near St Thomas More Catholic School, Broomfield Park and The Alfred Herring pub and the streets around them. There’s a railway station in Palmers Green itself: Palmers Green station. Other landmarks nearby include Broomfield House Museum (under half a mile west) and Greentrees Hospital (0.6 miles south-east). Open spaces near Palmers Green include Highgate Hill and Darland's Lake.
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- Sashes that need overhauling
- Cracked or broken glass
- Timber that has rotted
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Where we work in Palmers Green
- Stone surrounds
- Timber door frames
- Period & listed homes
- Tenement windows
- Brick reveals
- Sash and case windows
Palmers Green questions
Is parking a problem for a job in Palmers Green?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you cover Palmers Green for sand mastic?
Yes, Palmers Green is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Is there any odour?
There can be a smell while the sealant cures. Opening a window helps.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or email us.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
Can you quote for more than one area?
Yes. Just list everything you need and we’ll quote it together.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What happens on the day
At the end, we look at the finished work together. The work normally takes a few hours for a single window, longer for several, depending on the size of the job. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Palmers Green. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
Related advice
Towns and villages near Palmers Green
More services for Palmers Green
Different surfaces, different methods
Stone surrounds
The stone is treated with care when the old mastic comes out.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Clear gutters so water does not pour onto the windows
- Take care around the mastic when scraping paint
- Leave the new mastic unpainted
- Ask a joiner to look at soft timber first
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
What affects the quote in Palmers Green
The price is agreed before any work begins. It’s based on:
- The old material and how stubborn it is
- The number and length of the joints
- Any mould that needs treating
- When we can work, for business premises
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Where the property is
- What’s wrong with the joints now
- Any access issues, like height or stairs
- If someone has resealed it before
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or email us.