Greater London · England
Sand mastic for sash & case windows in Notting Hill, Greater London
Problem with your window and door surrounds in Notting Hill? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Failed mastic on an exposed elevation
- Window mastic to renew ahead of painting
- Old sand mastic that has cracked, crumbled or fallen out
How we handle sand mastic in Notting Hill
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We work on stone surrounds, timber door frames and brick reveals, and people most often call us about gaps where the frame meets the masonry and mastic that needs renewing before redecorating.
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.
Big or small, you get the same 12-month guarantee.
- Where
- Notting Hill (W11, W8, W2)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Surface by surface
Timber door frames
Round a period front door, sand mastic gives the right look.
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Also near Notting Hill
Also in Notting Hill
What sand mastic looks like in Notting Hill
Historic houses like Sambourne House (about 0.7 miles south-east) are a reminder that the area around Notting Hill has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking.
As a London address, Notting Hill can be tricky for parking: let us know about parking bays, permits or a driveway. If you live in an older home near St John's Notting Hill, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as St Clement and St James CofE Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Notting Hill is about 1 mile north of Kensington, in Greater London. Every kind of property in Notting Hill is covered for sand mastic. Every job comes with our 12-month guarantee. Across Greater London, we cover 764 places, Notting Hill among them.
All of W11, W8 and W2 is covered for sand mastic. If you need sand mastic at a property on Walmer Road, Aubrey Road and Sirdar Road or anywhere close by, our applicators can take on the job. Being close to the A402 and A4204, Notting Hill is simple for us to get to for sand mastic. We also cover the places around Notting Hill: Holland Park (1 mile south), Notting Dale (1 mile north-west), Kensington (1 mile south), Shepherd's Bush (1 mile south-west) and White City (1 mile west). Within a short drive, we also cover London (5 miles east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east), Walthamstow (9 miles north-east) and Hoxton (5 miles east).
Around Notting Hill
Around Notting Hill, our work takes us to homes and buildings near The Sun In Splendour pub, Kensington School and Abdus Salam Library and the streets around them. Other local landmarks include Holland Park (under half a mile south) and Holland Park School (less than half a mile south). Notting Hill’s nearest station is Shepherds Bush station, about 0.6 miles south-west of the centre. Nearby you will also find Montfichet's Tower (4.4 miles east) and Westfield London (0.7 miles west). Open spaces near Notting Hill include Campden Hill and The Long Water.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for a single window, longer for several and we leave things clean and tidy. For a job in Notting Hill, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Let us know about earlier repairs to the joints
- Let us know about parking restrictions
- Move anything stored near the joints
How to get a quote
To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before any work starts.
Advice
Common questions in Notting Hill
Do you work for landlords with property near Shepherds Bush station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Is Notting Hill in your area for sand mastic?
Yes. We work across London and the South East, and Notting Hill is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
Are you insured?
Yes. We are fully insured for domestic and commercial work.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They decide whether consent is needed.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
How we quote for sand mastic
You’ll get a clear quote before work begins. It takes into account:
- The product the joint needs
- How much old sealant there is and how hard it is to remove
- The amount of work
- The number of rooms or windows
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- Roughly how big the job is
- Whether it’s a home or a business
- Whether it has been sealed before
- How we’d reach the joints
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Avoid patching sand mastic with silicone
- Go gently near the mastic when preparing windows
- Plan mastic work ahead of painting
- Clear gutters so water doesn’t pour onto the windows
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
When it isn’t the sealant
We will not take on work that will not last, so these are the limits:
- Masonry that needs repairing
- Sash cords, weights and draught-proofing of the sashes
- Whether work needs listed building consent
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before booking.
Surfaces we seal
- Brick reveals
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
- Timber door frames