Greater London · England
Sand mastic for sash & case windows in Perivale, Greater London
Problem with your window and door surrounds in Perivale? We remove the old material, prepare the joints and seal them properly.
- Gaps where the frame meets the masonry
- Cracked mastic round a front door frame
- Tired mastic found when preparing windows for paint
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. It normally takes anything from a few hours to a full day, depending on how many windows. For a job in Perivale, 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.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Keep pets and children clear of the area while we work
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or email us.
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About our sand mastic in Perivale
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. We work on tenement windows, timber door frames and period & listed homes, and common reasons people get in touch are window mastic to renew ahead of painting and gaps round a timber door in stone or brick.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in, in Perivale as anywhere.
Big or small, you get the same one-year guarantee in Perivale and across Greater London.
- Place
- Perivale (UB6, HA0, W5)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Perivale
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and give you a clear quote before work begins.
Why Perivale customers choose us
- Approved under the ARBOMaster scheme
- Over 20 years’ experience
- Tidy, careful work
- Any old sealant cut out fully, not covered over
Take a look at what affects the cost and what customers say.
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Keep sills and gutters clear so water drains away
- Plan mastic work ahead of painting
- Keep modern sealant off the mastic
- Inspect the joints round the windows every year or so
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Questions from Perivale
Can you do sand mastic in Perivale?
Yes, Perivale is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and tell us what needs doing.
Is parking a problem for a job in Perivale?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Can you seal over the old sealant?
No. The old sealant always comes out first.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Do you offer different sealant colours?
We’ll suggest a colour to suit the surroundings. The choice depends on the product the joint needs.
What guarantee comes with the work?
There’s a 12-month guarantee on every job, sand mastic included.
Do you work for letting agents?
Yes. We work in homes, commercial premises and hotels, and we’re fully insured.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Nearby places to Perivale
More services for Perivale
Frames and glazing around Perivale
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Pitzhanger Manor (about 2 miles south) are a reminder that the area around Perivale has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
As a London address, Perivale can be tricky for parking: let us know about parking bays, permits or a driveway. If you let a flat or house near South Greenford station, any sash windows need sound mastic to keep draughts and rain out.
Perivale is about 1 mile east of Greenford, in Greater London. Homes, rented property, offices and hotels in Perivale is covered for sand mastic. The work is guaranteed for a year. Perivale is one of 764 places in Greater London we cover. Our London page covers work nearby, about 10 miles away.
Postcode districts we cover here for sand mastic: UB6, HA0 and W5. If you need sand mastic at a property on Lee Road, Wicket Road and Bilton Road or anywhere close by, our applicators can take on the job. Neighbouring places we cover for sand mastic include Pitshanger (1 mile south), Brentham Garden Suburb (1 mile south-east), Sudbury Hill (1 mile north), Sudbury (1 mile north) and Greenford (1 mile west). Further out, we also cover London (10 miles east), City of Westminster (7 miles east), Marylebone (8 miles east), Kensington (6 miles south-east), St Pancras (9 miles east) and Shoreditch (10 miles east).
What’s near Perivale
Around Perivale, our work takes us to homes and buildings near Alperton Community School, Castle Bar Park and Brentham Clubhouse pub and the streets around them. The nearest railway station is South Greenford station, roughly 0.8 miles south-west of the centre. Well-known places in the area include London Transport Museum Depot (2.8 miles south-east) and London Designer Outlet (1.9 miles north-east). Not far away are Middle Lake and Castlebar Hill.
Landlord and commercial work in Perivale
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
We work for letting agents and landlords as well as householders. Resealing between tenancies keeps a property looking cared for.
Different surfaces, different methods
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We work on single windows or whole elevations.
Signs you need sand mastic in Perivale
Rain on the window surround works into any crack and loosens it further. Windows facing the weather tend to go first.
It’s worth asking for a quote if you see:
- Silicone on a period window that looks wrong
- Crumbling sand mastic round a window
- Open joints round the window box
- Cracked mastic round a front door frame
If you live in an older home near St. Mary with St. Nicholas - Perivale, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- How the colour is chosen
- How hidden problems are handled
- The length of the guarantee
- Are they insured?