Surrey · England
Wanborough Sand Mastic
Sand mastic across Wanborough and nearby, with old sealant always removed completely and a one-year guarantee.
- Tired mastic found when preparing windows for paint
- Draughts and rain around sash boxes
- Modern sealant on a period surround
Sand mastic in Wanborough, done properly
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. Renewing it closes the gap and tidies the surround. We work on tenement windows, sash and case windows and stone surrounds, and the jobs we see most are draughts and rain around sash boxes and gaps where the frame meets the masonry.
Outdoor sealant needs dry, clean surfaces, so work on frames around Wanborough is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Wanborough (GU3)
- Region
- Surrey
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
At the end, we look at the finished work together. The visit itself normally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. Somewhere as small as Wanborough, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- 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.
Preparing for the visit
- Let us know about parking restrictions
- Tell us about any water getting in
- Keep children and pets away from the work area
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
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FAQs for Wanborough
Will you come out to Wanborough?
Yes, Wanborough is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Wanborough station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
What do you need from me for a quote?
Only a few details: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or drop us an email.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Is consent needed for window work on a listed home?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like, but they decide.
Can I choose the sealant colour?
We’ll suggest a colour to suit the surroundings. The product needed can limit the range.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before resealing.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
How the job changes by surface
Timber door frames
Doors face weather and wear and the mastic can crack early. It’s renewed by hand.
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
Towns and villages near Wanborough
Other services in Wanborough
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that need overhauling
- Cracked or broken glass
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before you book.
Joints and surfaces we work on
- Timber door frames
- Stone surrounds
- Period & listed homes
- Tenement windows
- Brick reveals
- Sash and case windows
What affects the cost of sand mastic
Call for a quick quote. The main things that affect it are:
- Mould in or behind the old joints
- When we can work, for business premises
- How much there is to do
- The product the joint needs
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Asking for a quote
When you contact us, these details help:
- Photos by email, if that is easy
- What’s wrong with the joints now
- How we’d reach the joints
- How many joints, rooms or windows are involved
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job.
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Plan mastic work ahead of painting
- Keep sills and gutters clear so water drains away
- Go gently near the mastic when preparing windows
- Look over the window mastic once a year
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Landlord and commercial work in Wanborough
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Windows and doors in Wanborough
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Wanborough Manor (about 0.1 miles east) nearby, there’s older building stock in the area around Wanborough 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.
Managing a site like Puttenham CofE Infant School? Then its window and door frames need their mastic kept sound, just like a home’s. Homes close to Church of St Bartholomew include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Rented homes near Wanborough station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Wanborough is about 4 miles west of Guildford, in Surrey. We provide sand mastic to homeowners, landlords and businesses in Wanborough and nearby. Wanborough is one of 395 towns and villages in Surrey where we work. Our Reading page covers work nearby, about 20 miles away.
Every address in GU3 is within our area for sand mastic, from the main roads to the quietest streets. We also cover Christmas Pie (1 mile north-west), Flexford (1 mile north-west), Puttenham (1 mile south-west), Normandy (2 miles north) and Willey Green (2 miles north). Further out, we also cover Guildford (4 miles east), Woking (7 miles north-east), Camberley (8 miles north), Farnham (6 miles west), Egham (15 miles north) and Walton-on-Thames (15 miles north-east).
Around Wanborough
In Wanborough, that means homes and buildings near Pucks Oak Barn and McAlmont Reserves and The Good Intent pub and the streets around them. The nearest railway station is Wanborough station, roughly 0.9 miles north of the centre. Other landmarks nearby include Guildford Castle (4 miles east) and Guildford Hospital (2.4 miles east). Open spaces near Wanborough include Ash Ranges and Lower Lake.