Surrey · England
Sand Mastic in Redhill
Sand mastic for Redhill, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughts and rain around sash boxes
- Mastic worn away on windows facing the weather
- Gaps round a timber door in stone or brick
Sand mastic for homes and businesses in Redhill
Across Redhill, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on sash and case windows, timber door frames and period & listed homes, and the jobs we see most are cement or filler used on old window joints that has cracked and cracked mastic round a front door frame.
Redhill mixes older streets, where windows have often been replaced, with newer estates fitted with uPVC. In every case, the joint between frame and wall is what keeps water out.
A 12-month guarantee comes as standard.
- Place
- Redhill (RH1, RH2)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What we can’t put right
New sealant cannot fix everything, and we’d rather say so up front. Sealant won’t put right:
- Masonry that needs repairing
- Decayed frames that need repair
- Putty and glazing repairs
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
What we seal
- Timber door frames
- Period & listed homes
- Brick reveals
- Sash and case windows
- Stone surrounds
- Tenement windows
Redhill homes and the weather
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.
Letting a property close to Redhill station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. In the older streets around Saint Matthew's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Schools such as St Joseph's Catholic Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Redhill is about 9 miles north of Crawley, in Surrey. Every kind of property in Redhill can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Our Surrey coverage runs to 395 places, and Redhill is one of them. We also work in Crawley, around 9 miles away.
Postcode districts we cover here for sand mastic: RH1 and RH2. We cover properties on High Street, Station Road and Church Road. Being close to the A23 and A25, Redhill is simple for us to get to for sand mastic. Close by, we work in Earlswood (1 mile south), Holmethorpe (1 mile north-east), Meadvale (1 mile south-west), South Earlswood (2 miles south) and South Nutfield (2 miles south-east). Larger places within reach include Epsom (8 miles north-west), Horley (4 miles south), Ewell (9 miles north-west), Walton-on-Thames (14 miles north-west), Caterham (5 miles north-east) and Dorking (7 miles west). As one of the bigger places in Surrey, Redhill has every kind of property, from flats to offices.
Local landmarks in Redhill
Typical jobs here are in homes near The Carrington School, Nutfield Marshes and Dunottar School, among other places. Redhill has its own railway station: Redhill station. Well-known places in the area include The Belfry (less than half a mile north) and Surrey Fire Museum (1.2 miles west). Open spaces near Redhill include Colley Hill and Reigate Heath.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Common questions in Redhill
Do you work for landlords with property near Redhill station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Is there a guarantee on sand mastic in Redhill?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Do you work in Redhill?
Yes. We cover Redhill and the rest of Surrey, as part of our work across South East England, London and Scotland. To book, ring 0345 464 0079 or drop us an email.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we will quote it together.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
What does sand mastic cost?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or send us an email and let us know what needs doing and where.
Landlord and commercial work in Redhill
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
What the job involves on each surface
Timber door frames
Door frames get knocked and soaked and the mastic can crack early. We rake it out and renew it.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
Other services in Redhill
What happens on the day
The work is kept neat and contained to the area we are working on. The job generally takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. Parking in a town like Redhill is generally straightforward, but tell us if there’s a driveway or any restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
Get a quote
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
Advice
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Sort the mastic before the decorators arrive
- Inspect the joints round the windows every year or so
- Go gently near the mastic when preparing windows
- Avoid patching sand mastic with silicone
Do not touch or press the mastic while it hardens. It skins over quickly but needs longer to fully harden.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
How we quote for sand mastic
You will get a clear quote before any work starts. It’s based on:
- The old material and how stubborn it is
- How many areas need sealing
- Working hours on commercial sites
- The size of the job
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email and we’ll talk you through it.
What to tell us for a quote
When you contact us, it’s useful to know:
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
- If someone has resealed it before
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or send us an email.