Hampshire · England
Sand mastic for sash & case windows in Whitehill, Hampshire
Sand mastic across Whitehill and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Draughty sash windows at the surround
- Cracked mastic round a front door frame
- Mastic dropping out of the joint
How we quote for sand mastic
You will get a clear quote before work begins. It takes into account:
- The number and length of the joints
- How many areas need sealing
- The type of sealant required
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Helping us quote
To make quoting easier, let us know:
- A few pictures by email, if you can
- The address or postcode of the job
- Any previous sealing or DIY work
- The problem you’ve noticed
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Sand mastic in Whitehill
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. We’re often asked to deal with mastic dropping out of the joint and modern sealant on a period surround, on brick reveals, stone surrounds and timber door frames.
Houses in smaller places like Whitehill can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Whitehill (GU35)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Whitehill questions
Do you cover smaller places like Whitehill?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Whitehill for sand mastic?
Yes, Whitehill is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing, and we will send you a clear quote.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will advise.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
What do you need from me for a quote?
Let us know what needs doing and where, plus pictures if you have them. If we need more, we’ll ask.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
What exactly is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours per window, depending on the condition of the joints. A visit to Whitehill is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- 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.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
How to get a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Advice
Landlord and commercial work in Whitehill
For anyone letting property in or around Whitehill, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
What sand mastic looks like in Whitehill
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Woodlea Primary School, the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near St Mark's Sacred Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Whitehill is about 6 miles south-east of Alton, in Hampshire. Our applicators cover sand mastic for homes and businesses in Whitehill and nearby, as part of our work across Hampshire. We cover 683 towns and villages across Hampshire. For nearby work, see our Portsmouth page.
Postcode districts we cover here for sand mastic: GU35. That includes homes and businesses on Stubbington Avenue, Petersfield Road and Dudley Close and the roads around them. If you are just outside Whitehill, we cover Hollywater (1 mile east), Bordon (1 mile north), Deadwater (1 mile north-east), Pinewood Village (1 mile north) and Standford (1 mile east). Larger places within reach include Basingstoke (15 miles north-west), Farnborough (14 miles north), Fleet (12 miles north), Horndean (15 miles south-west), Aldershot (11 miles north-east) and Alton (6 miles north-west).
Near you in Whitehill
Around Whitehill, our work takes us to homes and buildings near St Matthew's Church and Mill Chase Academy. The nearest railway station is Liphook station, about 3.7 miles south-east. Nearby you’ll also find The Romany Museum (3.2 miles west) and Chase Community Hospital (less than half a mile north-east). For a walk, there’s Selborne Hill and Deadwater Valley.
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Cracked or broken glass
- Decisions on consent for listed homes
- Masonry that needs repairing
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Joints and surfaces we work on
- Stone surrounds
- Timber door frames
- Tenement windows
- Period & listed homes
- Brick reveals
- Sash and case windows
When to call us in Whitehill
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
People generally contact us when they notice something like this:
- Open joints round the window box
- Failed mastic on an exposed elevation
- Patchy fillers round a sash window
- Modern sealant on a period surround
For landlords with property near Liphook station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- Which sealant they’ll use, and why
- Are they insured?
- Whether VAT is included
- When the joint can take water or movement
Different surfaces, different methods
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
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.
DIY sealant or a professional job?
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.
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.