Greater London · England
Window & door mastic in Ham, Greater London
Window mastic for Ham, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Water coming in at the bottom corners of a door
- Cracked sealant at the sill ends
- Draughty joints inside around the window
Window mastic for homes and businesses in Ham
Every window and door frame has a gap around it, and mastic is what closes it. Once that seal fails, wind and rain find the gap. The old mastic is removed and the joint resealed with a flexible exterior sealant. We’re often asked to deal with mastic that has split away from the wall and rushed sealant from a window installation, on patio & French doors, uPVC windows and window sills.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease generally says who is responsible for the windows, so it’s worth checking before booking, and access in Ham is something to talk through when you book.
You get a one-year guarantee, the same in Ham as everywhere else we work.
- Location
- Ham (TW10, KT2, TW11)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
To keep the joints looking good and working properly:
- Clean frames with a soft cloth and soapy water
- Make sure the drainage slots aren’t blocked
- Repaint timber before it’s bare
- Don’t paint over the silicone
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
Leaks normally show up in wet, windy weather, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
What happens if it’s left?
A quick bead over the top of old mastic looks like an easy fix, but it will not grip old, dirty sealant. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. In a flat in Ham, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, ring 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why Ham customers choose us
- Arbo and Everbuild products
- 180+ five-star Google reviews
- Old sealant always removed completely
- Colour agreed with you before any work starts
Landlord and commercial work in Ham
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Landlords and agents in Ham can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Other services in Ham
How the visit works
There is not much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours for a handful of frames, longer for a whole house. In a London area like Ham, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
How to prepare
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
- Try not to wet indoor joints just before the visit
Get a quote
If you are in Ham and need window mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Read more
What the job involves on each surface
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We will tell you which suits your home.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so we pay close attention there.
Windows and doors in Ham
With historic houses such as Ham House (about 0.6 miles north) nearby, there’s older building stock in the area around Ham as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Meadlands Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Teddington station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Ham is about 1 mile south-east of Twickenham, in Greater London. Homes, rented property, offices and hotels in Ham can book us for window mastic, old or new, large or small. The work is guaranteed for a year. We cover 764 towns and villages across Greater London, from the larger towns to small villages. Our London page covers work nearby.
Here we cover the TW10, KT2 and TW11 postcode area for window mastic. That includes homes and businesses on New Road, Lock Road and Cave Road. Ham is on the A307, which makes it straightforward to reach with everything needed for window mastic. We also cover Petersham (1 mile north), Eel Pie Island (1 mile north-west), Strawberry Hill (1 mile west), Teddington (1 mile south-west) and Richmond (1 mile north). Within a short drive, we also cover London (10 miles north-east), City of Westminster (9 miles north-east), Marylebone (9 miles north-east), Kensington (6 miles north-east), St Pancras (10 miles north-east) and Shoreditch (12 miles north-east).
Local landmarks in Ham
Locally, jobs take us to homes and businesses close to Grey Court School, The New Inn Public House and Sudbrook Park. For rail, the closest station is Teddington station, about 1.2 miles south-west. Other landmarks nearby include Eel Pie Island Museum (1.1 miles north-west) and Bentall Centre (1.6 miles south). Not far away are Kew Gardens Lake and Richmond Hill.
What we’re called out for in Ham
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
Common reasons people contact us are:
- Gaps left after new windows were fitted
- Old mastic that has gone black or come away
- Hard, cracked sealant around windows
- Gaps where the sill meets the wall
As a London address, Ham can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before booking anyone
- What guarantee comes with the work
- What preparation is included
- Who turns up on the day
- What happens if the job turns out different
Common questions in Ham
Is parking an issue for window mastic in Ham?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do you cover Ham for window mastic?
Yes, Ham is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
How do I get a quote for window mastic in Ham?
Size, access and the old material all affect the cost. Call for a quick quote.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We will tell you what we are using and why.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or email us.