Greater London · England
New-build mastic & snagging in South Tottenham, Greater London
Specialist new build mastic for South Tottenham: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Cracks appearing as a new home settles
- Cracked sealant around new window and door frames
- Sealant applied over dusty or wet surfaces
How we handle new build mastic in South Tottenham
Some new-home owners let the house settle before resealing. That makes sense for small gaps that are just cosmetic, but a seal that is letting water through needs doing now. We are often asked to deal with internal frame sealant that has split and sealant work across a run of new homes, on plot handovers, skirting & floors and bathrooms & en suites.
London homes range from new-build flats to period conversions with new floors laid over old boards. Every joint between floor, skirting and threshold has to cope with some movement, in South Tottenham as anywhere.
You are covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Where
- South Tottenham (N15, N17, N16)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
After the cure time, these simple habits help:
- Record problems with dated photos
- Check bath and shower seals every few months as the house settles
- Raise failed sealant with the developer while you’re covered
- Use the extractor fan every time you shower
Avoid standing on the rim of the bath or the edge of the tray while the sealant cures. If a bath or tray moves when you stand in it, get it looked at.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small.
What we do, step by step
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the job takes a few hours in a single home for a typical job. 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 start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
- Mention any sign-in or site rules at work premises
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
Related advice
Landlord and commercial work in South Tottenham
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 that we can handle for you.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
What affects the cost of new build mastic
For a quick quote, just ask. The main things that affect it are:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Whether the work is at height
- How much there is to do
What you pay reflects the work, not guesswork. That is why we ask a few questions first.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Roughly how big the job is
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
We do not publish a price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or email us.
Your questions about new build mastic in South Tottenham
Can you do new build mastic in South Tottenham?
Yes. We work across London and the South East, and South Tottenham is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Can parking be tricky for a visit in South Tottenham?
Parking in South Tottenham, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
I rent my home. Can I book you?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Do I have to be there?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the number of plots. Your quote will say how long we expect yours to take.
Do you work through snagging lists?
Yes. Photos of each sealant item help us quote. Items that need a plumber, tiler or the builder are flagged.
Do you work for developers?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send the schedule and any specification and we will give you a quote.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Why act early in South Tottenham
Water getting past a failed seal in a new build reaches walls and floors that are still settling. Resealing promptly protects the new finishes around it. 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. Dealing with it early is far simpler.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts.
What you get with us
- We never seal over old sealant
- 20+ years of sealant experience
- Sanitary silicone with an anti-fungal additive in wet areas
- Rated 4.9 stars on Google
Should I try it myself first?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Places near South Tottenham
More services for South Tottenham
How the job changes by surface
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one in a matching colour.
Kitchens
As a new house dries, worktops and walls shift a little, which opens gaps along the back. A fresh flexible bead closes them.
What new build mastic looks like in South Tottenham
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.
South Tottenham is in London, so parking needs planning: let us know about parking bays, permits or a driveway. If you’ve bought a new home near Seven Sisters station, the sealant around baths, showers and frames is worth checking in the first year or two.
South Tottenham is about 2 miles west of Walthamstow, in Greater London. We provide new build mastic to householders, landlords and businesses in South Tottenham and the surrounding area, as part of our work across Greater London. South Tottenham is one of 764 places in Greater London we cover. You can also see our page for London, roughly 6 miles from South Tottenham.
Work in N15, N17 and N16 works the same way as everywhere else we cover. Local streets include Ida Road, Elmar Road and Grove Road, and we cover them all. Neighbouring places we cover for new build mastic include Seven Sisters (1 mile south), Tottenham Green (1 mile north), St Ann's (1 mile west), Tottenham Hale (1 mile north-east) and West Green (1 mile west). Within a short drive, we also cover London (6 miles south), City of Westminster (6 miles south-west), Marylebone (6 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south-west) and Shoreditch (4 miles south).
Near you in South Tottenham
We work in homes and buildings around Church of St Andrew, Ada College and Gladesmore Community School. Also close by are Chestnuts Park (0.7 miles west) and No.8 Seven Sisters pub (0.5 miles south-west). There’s a railway station in South Tottenham itself: Seven Sisters station. Well-known places in the area include The Mall Wood Green (1.7 miles north-west) and North Middlesex University Hospital (2 miles north). Not far away are Highgate Hill and Woodberry Wetlands.