Greater London · England
Sand mastic for sash & case windows in Bickley, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Bickley and across Greater London. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Weathered mastic on the most exposed windows
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Sand mastic for homes and businesses in Bickley
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. Typical jobs include failed mastic on an exposed elevation and draughty sash windows at the surround, across brick reveals, timber door frames and stone surrounds.
Many London homes are flats, with windows high above the street. In a converted house or block, the lease usually says who is responsible for the windows, so it’s worth checking before booking, and access in Bickley is something to talk through when you book.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Bickley (BR1, BR2, BR7)
- Region
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for sand mastic in Bickley
For a quick quote, just ask. The main things that affect it are:
- The old material and how stubborn it is
- The product the joint needs
- Whether there’s mould to deal with
- When we can work, for business premises
Doing several joints on one visit normally makes better use of the time than several visits. We’ll give you a clear quote for the lot.
What to tell us for a quote
To make quoting easier, let us know:
- Roughly how big the job is
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- The problem you’ve noticed
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you are ready, phone 0345 464 0079 or drop us an email.
When to call us in Bickley
Water gets into small cracks in the mastic and pushes it out. Exposed elevations usually fail first.
The most common problems we see are:
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Modern sealant on a period surround
- Weathered mastic on the most exposed windows
For an older house near a landmark such as Church of St George, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before you book anyone
- What product goes in the joint
- When the joint can take water or movement
- How much experience the applicator has
- How hidden problems are handled
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Keep modern sealant off the mastic
- Make sure water runs off the sill
- Have rotten timber repaired before new mastic goes in
- Leave the new mastic unpainted
Leave the new mastic unpainted, as traditional guidance advises. If you are redecorating, ask us first.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry so early renewal protects both.
Also in Bickley
FAQs for Bickley
Can you help a landlord with a rental near Bickley station?
Yes. We work for landlords and letting agents as well as householders. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Is parking an issue for sand mastic in Bickley?
Parking in Bickley, 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.
Should I check with the council before work on a listed or conservation-area home?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Bickley, along with the rest of our area.
Do you have insurance?
Yes. We are fully insured.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Why act early in Bickley
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Bickley, the repair is bigger than the sealant job would have been.
Leaving a failed joint generally makes the job bigger, not smaller. If you are unsure, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What you get with us
- 4.9 on Google from 180+ five-star reviews
- An ARBOMaster approved applicator
- A 12-month guarantee on all work
- Homes, businesses and hotels
What sand mastic looks like in Bickley
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. Historic houses like Bromley Palace (about 1.1 miles west) are a reminder that the area around Bickley has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Bickley is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Managing a site like Bullers Wood School for Boys? Then the mastic around its windows and doors needs looking after like any other building’s.
Bickley is about 1 mile east of Bromley, in Greater London. For sand mastic in and around Bickley, please call 0345 464 0079 or send us an email for a quick quote. We cover Greater London from our Crawley base. Our area takes in 764 places across Greater London, large and small. London is on our list too, about 9 miles from Bickley.
Postcode districts we cover here for sand mastic: BR1, BR2 and BR7. If you need sand mastic at a property on Golf Road, The Avenue and Canon Road or anywhere close by, we can help. Neighbouring places we cover for sand mastic include Widmore (1 mile north), Elmstead (1 mile north), Chislehurst (1 mile north-east), Bromley (1 mile west) and Sundridge (1 mile north-west). We also work in nearby towns such as London (9 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles north-west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
What’s near Bickley
In Bickley, that means homes and buildings near Bird In Hand Public House, Holy Trinity College Bromley and Jubilee Country Park. Bickley has its own railway station: Bickley station. Other landmarks nearby include Bethlem Museum of the Mind (1.5 miles south-west) and The Mall (1.3 miles west). Not far away are Summer Hill and The Tarn.
When it isn’t the sealant
A few problems are outside what sealant work can do:
- Decayed frames that need repair
- Putty and glazing repairs
- Sashes that rattle, stick or will not open
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before you book.
Surfaces we seal
- Stone surrounds
- Timber door frames
- Tenement windows
- Sash and case windows
- Period & listed homes
- Brick reveals
The process
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. In Bickley, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
If you’re in Bickley and need sand mastic, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.