Greater London · England
Sand Mastic in Hanger Hill
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Hanger Hill and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Wind and rain getting in round a sash window
- Silicone on a period window that looks wrong
- Old sand mastic that has cracked, crumbled or fallen out
Sand mastic in Hanger Hill, done properly
We work across Hanger Hill renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on timber door frames, stone surrounds and tenement windows, and people most often call us about patchy fillers round a sash window and mastic round period door frames that has failed.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Hanger Hill.
You’re covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Place
- Hanger Hill (W3, W5, NW10)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Housing providers, facilities teams and property managers book us too in Hanger Hill and across Greater London. We can quote a run of properties together.
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
DIY sealant or a professional job?
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.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Frames and glazing around Hanger Hill
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. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
For landlords with property near Acton Main Line station, older sash windows in a rental need their mastic kept sound to keep the weather out. If you live in an older home near Church of the Ascension, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Hanger Hill is about 1 mile north-west of Acton, in Greater London. We provide sand mastic to homes and businesses in Hanger Hill and the surrounding area, as part of our work across Greater London. 764 places in Greater London are on our list, large and small. London is on our list too, about 8 miles from Hanger Hill.
Here we cover the W3, W5 and NW10 postcode area for sand mastic. Whether your property is on Noel Road, Vale Lane and Links Road or anywhere close by, our applicators can take on the job. We also cover the places around Hanger Hill: Park Royal (1 mile north-east), West Twyford (1 mile north), Acton (1 mile south-east), South Acton (1 mile south) and Acton Green (2 miles south-east). Within a short drive, we also cover London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (4 miles east), St Pancras (7 miles east) and Shoreditch (9 miles east).
Around Hanger Hill
We work in homes and buildings around The Ellen Wilkinson School for Girls, The Sir Michael Balcon pub and Library for Iranian Studies. Nearby too are The Ellen Wilkinson School for Girls (under half a mile south-west) and Ealing Common (0.7 miles south-west). The nearest railway station is Acton Main Line station, roughly 0.7 miles east of the centre. Other landmarks nearby include Central Middlesex Hospital (1 mile north-east) and London Transport Museum Depot (1 mile south). Green spaces nearby include Castlebar Hill and Hanger Hill Wood.
When to call us in Hanger Hill
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Keep an eye out for these signs:
- Draughty sash windows at the surround
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
- Mastic worn away on windows facing the weather
Hanger Hill is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Before you book anyone
- How much experience the applicator has
- Is VAT in the price?
- Is the old sealant removed completely?
- How long the guarantee is
What affects the cost of sand mastic
We don’t publish a price list. What we look at:
- The amount of work
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- A few pictures by email, if you can
- How we’d reach the joints
- The type of property
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or send us an email with the details, and photos are welcome.
Common questions in Hanger Hill
Can you help a landlord with a rental near Acton Main Line 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 will give you a fixed price before we start.
Is parking a problem for a job in Hanger Hill?
Parking in Hanger Hill, 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.
Can I choose the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
What guarantee comes with the work?
Our one-year guarantee covers every job, sand mastic included.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. The old silicone has to come out completely so the mastic beds in well.
Can I paint the new mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we are using.
How the visit works
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours per window, depending on the condition of the joints. In Hanger Hill, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
Get a quote
Want a quote for sand mastic? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Keep sills and gutters clear so water drains away
- Do not run silicone over sand mastic
- Check the mastic when you check the paintwork
- Have rotten timber repaired before new mastic goes in
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Sound mastic protects the frame. Once it fails, water can sit against the timber and timber that stays wet can rot.
Places near Hanger Hill
Other services in Hanger Hill
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
- Masonry that needs repairing
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before you book.
What we seal
- Period & listed homes
- Brick reveals
- Tenement windows
- Stone surrounds
- Sash and case windows
- Timber door frames