Surrey · England
Sand mastic for sash & case windows in Brockham, Surrey
Sand mastic across Brockham and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Failed mastic on an exposed elevation
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
How we handle sand mastic in Brockham
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. Renewing it closes the gap and tidies the surround. If you have cement or filler used on old window joints that has cracked and mastic round period door frames that has failed, we can put it right.
Around Brockham, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Your job is guaranteed for a year, as with all our work.
- Place
- Brockham (RH3)
- Region
- Surrey
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
Landlords and agents in Brockham can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
For anyone letting property in or around Brockham, several properties can be quoted together. Just tell us the addresses and what each one needs.
Your questions about sand mastic in Brockham
Is Brockham within the area you cover?
Yes. Brockham is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for landlords with property near Betchworth station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
How much does sand mastic cost in Brockham?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
Can you match the sealant colour?
Most of the time, yes. We’ll tell you which colours the right product comes in.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply ring 0345 464 0079 or send us an email.
What sand mastic looks like in Brockham
Historic houses like Polesden Lacey (about 4.2 miles west) are a reminder that the area around Brockham has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
If you let a flat or house near Betchworth station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near Christ Church, the joint between an old wall and a newer frame is normally the first place rain gets in. If you look after a building such as North Downs Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Brockham is about 2 miles east of Dorking, in Surrey. Whether you are in the middle of Brockham or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Brockham is one of 395 towns and villages in Surrey where we work. There’s also a page for Crawley, roughly 9 miles from Brockham.
We cover every part of the RH3 postcode area for sand mastic and the streets around it. Whether your property is on Holly Close, Nutwood Avenue and Kiln Lane or a nearby road, our applicators can take on the job. Neighbouring places we cover for sand mastic include Betchworth (1 mile north-east), Strood Green (1 mile south), Box Hill (1 mile north), Buckland (1 mile east) and Bunce Common (2 miles south). We also work in nearby towns such as Guildford (13 miles west), Woking (14 miles north-west), Epsom (7 miles north), Horley (6 miles south-east), Redhill (5 miles east) and Ewell (8 miles north).
Near you in Brockham
In Brockham, that means homes and buildings near The Ashcombe School, Pippbrook House and Inn on The Green and the streets around them. The nearest railway station is Betchworth station, about 1.1 miles north-east of the centre. Well-known places in the area include Reigate Priory Museum (3.3 miles east) and Headley Court (3.9 miles north). For a walk, there’s Reigate Heath and Box Hill.
Different surfaces, different methods
Timber door frames
Round a period front door, sand mastic gives the right look.
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is usually favoured.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Look over the window mastic once a year
- Keep sills and gutters clear so water drains away
- Check with your local planning authority if your home is listed
- Take care around the mastic when scraping paint
Leave the new mastic unpainted, as traditional guidance advises. If you are redecorating, ask us first.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Nearby places to Brockham
Also in Brockham
Why act early in Brockham
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Older cottages and farmhouses around Brockham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll explain what it covers.
Why Brockham customers choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- 20+ years of sealant experience
- 12-month guarantee on every job
- Full insurance on every job
Take a look at our cost guide and customer reviews.
How it works
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. Most jobs take a few hours per window, depending on the condition of the joints. In a small place like Brockham, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we’re working on
- Tell us if parking is tricky
Get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Advice
What affects the quote in Brockham
The quote reflects the job in front of us. We look at:
- How many areas need sealing
- The old material and how stubborn it is
- Whether the work is at height
- Any working-time requirements on site
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Helping us quote
There’s no need for technical detail. Just tell us:
- What’s wrong with the joints now
- The rough size of the job
- Pictures of the joints, sent by email
- How we’d reach the joints
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand, and we will come back to you with a quote.
When it isn’t the sealant
It helps to know what we can’t do too:
- Decisions on consent for listed homes
- Crumbling stone or brickwork round the window
- Broken panes
If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer.
What we seal
- Brick reveals
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Timber door frames
- Tenement windows