Greater London · England
Sand Mastic in Goodmayes
Sand mastic in Goodmayes from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps where the frame meets the masonry
- Crumbling sand mastic round a window
- Wind and rain getting in round a sash window
Different surfaces, different methods
Timber door frames
Round a period front door, sand mastic gives the right look.
Period and listed homes
Period homes look their best with traditional materials.
Sand mastic for homes and businesses in Goodmayes
On many period windows, sand mastic looks right and suits the building. Newer frames generally get a flexible sealant instead, and we will talk through which suits your home. We work on sash and case windows, period & listed homes and stone surrounds, and the jobs we see most are gaps where the frame meets the masonry and cement or filler used on old window joints that has cracked.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Goodmayes as anywhere.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Goodmayes (IG3, RM8, RM6)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Goodmayes
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Goodmayes, the repair is bigger than a sealant job.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why Goodmayes customers choose us
- Arbo and Everbuild products
- Neat joints and a tidy finish
- More than 20 years in sealant work
- We are fully insured
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a single window, longer for several, depending on the size of the job. In a London area like Goodmayes, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We check each window surround and the condition of the joint.
- 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.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we are working on
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Every job is quoted individually. Simply phone 0345 464 0079 or send us an email and describe the job.
Related advice
Questions from Goodmayes
Do you work for landlords with property near Goodmayes station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Is parking an issue for sand mastic in Goodmayes?
Parking in Goodmayes, 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.
Do you cover Goodmayes?
We do. Goodmayes is part of the area we cover.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
What should I tell you?
Only a few details: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or send us an email.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
When will the new mastic be hard?
It takes a while. The skin forms first, and the full set comes later and we’ll give you an idea for your job.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Goodmayes.
What sand mastic looks like in Goodmayes
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.
Managing a site like Goodmayes Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Goodmayes station? Then any sash windows need sound mastic to keep draughts and rain out.
Goodmayes is about 2 miles north of Barking, in Greater London. Anywhere in IG3, we cover sand mastic for homes and businesses. We cover 764 towns and villages across Greater London. You can also see our page for London, about 10 miles away.
Here we cover the IG3, RM8 and RM6 postcode area for sand mastic. We cover properties on High Road, Green Lane and Essex Road and the roads around them. You’ll find Goodmayes on the A1083, which makes it straightforward to reach with everything needed for sand mastic. Other places close to Goodmayes include Little Heath (1 mile north), Aldborough Hatch (1 mile north), Chadwell Heath (2 miles north-east), Becontree (2 miles south-east) and Becontree Heath (2 miles east). Larger places within reach include London (10 miles south-west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (10 miles west) and Shoreditch (9 miles west).
Local landmarks in Goodmayes
We work in homes and buildings around The Eva Hart pub, South Park and Mayfield School. There’s a railway station in Goodmayes itself: Goodmayes station. Other landmarks nearby include Redbridge Museum (1.7 miles west) and Goodmayes Hospital (0.9 miles north). The countryside around Goodmayes includes Hollow Pond and Scrattons Eco Park.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Putty and glazing repairs
- Whether work needs listed building consent
- Crumbling stone or brickwork round the window
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Where we work in Goodmayes
- Sash and case windows
- Stone surrounds
- Timber door frames
- Brick reveals
- Tenement windows
- Period & listed homes
Towns and villages near Goodmayes
Other services in Goodmayes
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Do you need sand mastic in Goodmayes?
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint and we normally remove them.
Most people get in touch when they notice something like this:
- Gaps round a timber door in stone or brick
- Mastic worn away on windows facing the weather
- Patchy fillers round a sash window
- Draughty sash windows at the surround
If you live in an older home near Church of All Saints, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- Whether the sealant suits the joint
- How long the guarantee is
- Whether they seal over old material or remove it
- How much experience the applicator has
Aftercare tips
Good habits help new joints last longer. A few tips:
- Get any rot dealt with first
- Check with your local planning authority if your home is listed
- Keep sills and gutters clear so water drains away
- Keep modern sealant off the mastic
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.