Greater London · England
Brent Park Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Brent Park, with a 12-month guarantee on every job. Ask us for a quote.
- Crumbling sand mastic round a window
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
FAQs for Brent Park
Can you do sand mastic in Brent Park?
Yes, Brent Park is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Is parking an issue for sand mastic in Brent Park?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Brent Park, along with the rest of our area.
Is it messy?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Sand mastic in Brent Park, done properly
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. Common call-outs are for crumbling sand mastic round a window and wind and rain getting in round a sash window, on brick reveals, tenement windows and stone surrounds.
Many London homes are flats, with windows high above the street. 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 Brent Park is something to talk through when you book.
Your job is guaranteed for a year, as with all our work.
- Place
- Brent Park (NW10, HA9, NW2)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Find out about consent before window work on a listed home
- Check the mastic when you check the paintwork
- Ask us before painting near the mastic
- Go gently near the mastic when preparing windows
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Windows and doors in Brent Park
With historic houses such as Pitzhanger Manor (about 3.5 miles south-west) nearby, there’s older building stock in the area around Brent Park 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. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
As a London address, Brent Park can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Homes close to Church of St Mary include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Brent Park is about 1 mile west of Neasden, in Greater London. Whether you are in the middle of Brent Park or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Brent Park is one of 764 places in Greater London we cover. Our London page covers work nearby, about 8 miles away.
We cover every part of NW10, HA9 and NW2 for sand mastic. Streets in the area include Dog Lane, Mayo Road and Barry Road, and we cover them all. Other places close to Brent Park include Church End (1 mile south-east), Neasden (1 mile east), Stonebridge Park (1 mile south-west), Stonebridge (1 mile south) and Tokyngton (1 mile south-west). We also work in nearby towns such as London (8 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (4 miles south-east), St Pancras (6 miles east) and Shoreditch (8 miles east).
Around Brent Park
Typical jobs here are in homes near Michaela Community School, Stonebridge Park Public House and The Swaminarayan School. The closest station to Brent Park is Stonebridge Park station, about 0.9 miles south-west of the centre. Nearby you’ll also find London Designer Outlet (1.1 miles west) and Brent Museum and Archives (1.4 miles east). Green spaces nearby include The Long Water and Masons Field.
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Nearby places to Brent Park
What else we do in Brent Park
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to a full day, depending on how many windows. For a job in Brent Park, 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.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Let us know if you’ve seen damp or leaks
- Tell us about access, such as stairs, a lift or high-level joints
- Keep pets and children clear of the area while we work
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
Advice
What we are called out for in Brent Park
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Signs it’s time to call us include:
- Cement or filler used on old window joints that has cracked
- Wind and rain getting in round a sash window
- Gaps round a timber door in stone or brick
- Crumbling sand mastic round a window
Letting a property close to Stonebridge Park station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
What your quote should include
- How the colour is chosen
- When the joint can take water or movement
- What happens if the job turns out different
- Are they insured?
Why deal with it now?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Brent Park, the repair is bigger than a sealant job.
Leaving a failed joint generally makes the job bigger, not smaller. If you’re unsure, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why Brent Park clients choose us
- Homes, businesses and hotels
- One-year guarantee on every job
- Tidy, careful work
- Any old sealant cut out fully, not covered over
Take a look at what affects the cost or customer reviews.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.