Greater London · England
Sand Mastic in Tottenham
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Tottenham, with a 12-month guarantee on every job. Ask us for a quote.
- Mastic worn away on windows facing the weather
- Gaps where the frame meets the masonry
- Silicone on a period window that looks wrong
Sand mastic in Tottenham, done properly
On many period windows, sand mastic looks right and suits the building. Newer frames normally get a flexible sealant instead and we will explain which is best for yours. We’re often asked to deal with crumbling sand mastic round a window and open joints round the window box, on sash and case windows, brick reveals and stone surrounds.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.
The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or drop us an email.
- Place
- Tottenham (N17, N15, N18)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Tottenham
Call for a quick quote. What matters most is:
- How many rooms, windows or areas are involved
- The type of sealant required
- The size of the job
- Any mould that needs treating
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Where the job is, and your postcode
- Roughly how big the job is
- How we’d reach the joints
- The problem you’ve noticed
We quote each job on its own. Simply ring 0345 464 0079 or send us an email and describe the job.
DIY versus a professional finish
If you are 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.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
What happens if it’s left?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice and that can be important for listed homes. 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.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why book with us
- Rated 4.9 stars on Google
- We never seal over old sealant
- Anti-fungal sanitary silicone in wet areas
- A 12-month guarantee on all work
What sand mastic looks like in Tottenham
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking.
Tottenham is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Schools such as The Mulberry Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Tottenham is about 6 miles north-east of Marylebone, in Greater London. Homes, rented property, offices and hotels in Tottenham is covered 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. You can also see our page for London, about 7 miles away.
All of N17, N15 and N18 is covered for sand mastic. Sand mastic is available to properties on New Road, High Road and Reed Road and the roads around them. Main roads around Tottenham include the A10, which makes travel easy. Nearby, we also carry out sand mastic in Broadwater Farm (1 mile west), Tottenham Hale (1 mile south-east), Tottenham Green (1 mile south), South Tottenham (1 mile south) and Seven Sisters (1 mile south). We also work in nearby towns such as London (7 miles south), City of Westminster (7 miles south-west), Marylebone (6 miles south-west), Kensington (9 miles south-west), St Pancras (5 miles south-west) and Shoreditch (5 miles south).
Around Tottenham
We work in homes and buildings around Bruce Castle Park, The John Loughborough School and Northumberland Park Community School. Tottenham has its own railway station: Bruce Grove station. Nearby you’ll also find North Middlesex University Hospital (1.1 miles north) and Markfield Beam Engine and Museum (1.1 miles south). Open spaces near Tottenham include Highgate Hill and Railway Fields.
Towns and villages near Tottenham
More services for Tottenham
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Sashes that need overhauling
- Masonry that needs repairing
- Planning or listed building consent (your local planning authority decides)
If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Surfaces we seal
- Period & listed homes
- Brick reveals
- Tenement windows
- Timber door frames
- Sash and case windows
- Stone surrounds
What we’re called out for in Tottenham
Timber frames move with the seasons. That movement opens up the mastic joint little by little.
Any of these means the joints need attention:
- Weathered mastic on the most exposed windows
- Crumbling sand mastic round a window
- Cracked mastic round a front door frame
- Window mastic to renew ahead of painting
For an older house near a landmark such as Church of St Mary the Virgin, the joint between an old wall and a newer frame is generally the first place rain gets in.
What your quote should include
- How long to leave it before use
- What guarantee comes with the work
- How much experience the applicator has
- What the quote includes, VAT included or not
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to a full day, depending on how many windows. 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.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Let us know about parking restrictions
- For indoor joints, keep the area dry beforehand if you can
- On commercial sites, let us know about site rules
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
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Questions from Tottenham
Is parking an issue for sand mastic in Tottenham?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Can you help a landlord with a rental near Bruce Grove station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
What guarantee comes with the work?
Every job comes with our 12-month guarantee, and we’re fully insured.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will talk you through it.
Do you offer different sealant colours?
Yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Is consent needed for window work on a listed home?
Check with your local planning authority. They decide whether consent is needed for work to your windows.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Renew mastic before redecorating the windows
- Find out about consent before window work on a listed home
- Ask a joiner to look at soft timber first
- Take care around the mastic when scraping paint
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.