Greater London · England
Sand Mastic in Tufnell Park
Professional sand mastic in and around Tufnell Park, with old sealant always removed completely and a 12-month guarantee.
- Mastic dropping out of the joint
- Draughty sash windows at the surround
- Patchy fillers round a sash window
How the job changes by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
Sand mastic in Tufnell Park, done properly
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it so the surround looks right again. If you have weathered mastic on the most exposed windows and a silicone bead on a sash window that spoils the look, we can put it right.
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, in Tufnell Park as anywhere.
Every job is covered by our 12-month guarantee, wherever you are in Greater London.
- Location
- Tufnell Park (NW5, N19, N7)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Tufnell Park
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
What happens if it’s left?
New mastic over crumbling mastic won’t hold. We remove the loose material first so the new mastic stays put. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.
Rather than a set price list, 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.
Why us?
- Homes, businesses and hotels
- An ARBOMaster approved applicator
- Rated 4.9 stars on Google
- We leave the area clean and tidy
Take a look at how sealant jobs are priced or our reviews.
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Sand mastic in Tufnell Park: local notes
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. With historic houses such as Witanhurst (about 1.2 miles north-west) nearby, there’s older building stock in the area around Tufnell Park as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to Church of St Benet and All Saints include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. As a London address, Tufnell Park can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For landlords with property near Upper Holloway station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Tufnell Park is about 2 miles west of Highbury, in Greater London. Every kind of property in Tufnell Park can book us for sand mastic. The work is guaranteed for a year. Tufnell Park is one of 764 towns and villages in Greater London where we work for sand mastic.
Jobs for sand mastic in NW5, N19 and N7 is quoted and booked the same way as anywhere else. That includes homes and businesses on Hugo Road, Ward Road and Anson Road. Neighbouring places we cover for sand mastic include Dartmouth Park (1 mile west), Upper Holloway (1 mile north), Gospel Oak (1 mile west), Lissenden Gardens (1 mile west) and Holloway (1 mile east). We also work in nearby towns such as London (4 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), Shoreditch (3 miles south-east) and Walthamstow (5 miles north-east).
Around Tufnell Park
Typical jobs here are in homes near Musical Theatre Academy, The Boston Arms Public House and Vaughan Williams Memorial Library. Other local landmarks include Acland Burghley School (within half a mile west) and Whittington Park (less than half a mile north-east). The nearest railway station is Upper Holloway station, about 0.5 miles north-east of the centre. Nearby you’ll also find Royal Northern Hospital (0.5 miles north-east) and Montfichet's Tower (3.3 miles south-east). Open spaces near Tufnell Park include St. James's Park Lake and Dartmouth Park Hill.
Also near Tufnell Park
Also in Tufnell Park
How to look after the new joints
To keep the joints looking good and working properly:
- Check the mastic when you check the paintwork
- Keep modern sealant off the mastic
- Make sure water runs off the sill
- Ask us before painting near the mastic
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
The process
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a few hours for a single window, longer for several. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Clear the area around the work
- Mention any tricky access
- Keep pets and children clear of the area while we work
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, ring 0345 464 0079 or send us an email.
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Common questions in Tufnell Park
I let a flat near Upper Holloway station. Can you help?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Is parking a problem for a job in Tufnell 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.
How long will you be here?
Most jobs take a few hours per window, depending on the condition of the joints, including the preparation. We will confirm how long when we quote.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Can old silicone round a sash window be swapped for sand mastic?
Generally, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Where are you based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Are you insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Can I add another job to the visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
What affects the cost of sand mastic
There’s no set price list, because no two jobs are the same. What we look at:
- Any mould that needs treating
- When we can work, for business premises
- The product the joint needs
- How easy the joints are to reach
Combining jobs into one visit usually makes better use of the time than several visits. We will give you a clear quote for the lot.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- The type of property
- The address or postcode of the job
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
For sand mastic in Tufnell Park, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.