Greater London · England
Fulwell Sand Mastic
Window and door surrounds in Fulwell need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Window mastic to renew ahead of painting
- Mastic dropping out of the joint
- Cement or filler used on old window joints that has cracked
When something else is needed
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Damaged stone surrounds
- Broken panes
- Decisions on consent for listed homes
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Fulwell
- Tenement windows
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Brick reveals
- Timber door frames
Sand mastic for homes and businesses in Fulwell
We renew sand mastic around sash windows and doors in stone and brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. If you are dealing with wind and rain getting in round a sash window and tired mastic found when preparing windows for paint, we can put it right, on period & listed homes, brick reveals and timber door frames alike.
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, and access in Fulwell is something to talk through when you book.
All our work comes with a one-year guarantee.
- Location
- Fulwell (TW11, TW2, TW12)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. 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.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why Fulwell customers choose us
- Homes, businesses and hotels
- Rated 4.9 stars on Google
- ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
See what affects the cost and what customers say.
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. It normally 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.
- 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.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
- Clear the area around the work
Getting a quote
Want a quote for sand mastic? Please ring 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear price before any work starts.
Related advice
Windows and doors in Fulwell
With historic houses such as Strawberry Hill House (about 0.6 miles north-east) nearby, there’s older building stock in the area around Fulwell as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Fulwell station, older sash windows in a rental need their mastic kept sound to keep the weather out. As a London address, Fulwell can be tricky for parking: let us know about parking bays, permits or a driveway.
Fulwell is about 1 mile south of Twickenham, in Greater London. Our applicators cover sand mastic for homeowners, landlords and businesses in Fulwell and nearby. Fulwell is one of 764 towns and villages in Greater London we cover for sand mastic. For nearby work, see our London page, about 12 miles away.
Our applicators cover all of TW11, TW2 and TW12 for sand mastic. That includes homes and businesses on Mays Road, Royal Road and Grove Road and the roads around them. Main roads around Fulwell include the A311 and A313, which makes travel easy. If you’re just outside Fulwell, we cover Strawberry Hill (1 mile north-east), Hampton Hill (1 mile south-west), Teddington (1 mile south-east), Twickenham (1 mile north) and Whitton (1 mile north). Larger places within reach include London (12 miles east), City of Westminster (10 miles north-east), Marylebone (10 miles north-east), Kensington (8 miles north-east), St Pancras (12 miles north-east) and Shoreditch (13 miles north-east).
Landmarks near Fulwell
Typical jobs here are in homes near Pope's Grotto pub, Thames Valley Grammar School and Waldegrave School, among other places. There’s a railway station in Fulwell itself: Fulwell station. Well-known places in the area include Treaty Centre (2.4 miles north) and Teddington Memorial Hospital (0.7 miles south-east). For a walk, there’s Kew Gardens Lake and Ham Lands.
Nearby places to Fulwell
Also in Fulwell
What affects the cost of sand mastic
We don’t publish a price list. What we look at:
- When we can work, for business premises
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- The number and length of the joints
Combining jobs into one visit normally makes better use of the time than several visits. You will get one clear quote for the whole job.
What to tell us for a quote
To make quoting easier, let us know:
- Roughly how big the job is
- Where the job is, and your postcode
- A few photos by email, if you can
- Any previous sealing or DIY work
For sand mastic in Fulwell, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Your questions about sand mastic in Fulwell
Do you work for landlords with property near Fulwell station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Is parking a problem for a job in Fulwell?
Parking in Fulwell, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Do I need permission for sand mastic on a listed building?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Can I paint the new mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Is sand mastic better than silicone for my windows?
We will help you decide. Sand mastic suits many period homes and newer frames suit modern sealant.
What the job involves on each surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. Sand mastic is shaped by hand to suit.
Work for landlords, hotels and businesses
For anyone letting property in or around Fulwell, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Signs you need sand mastic in Fulwell
Age is the main cause. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
Common reasons people contact us include:
- Weathered mastic on the most exposed windows
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
- Patchy fillers round a sash window
If you look after a building such as Stanley Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before you book
- Which colour the sealant will be
- Are they insured?
- Whether VAT is included
- How long to leave it before use