Hampshire · England
Sand Mastic in Chalton
Problem with your window and door surrounds in Chalton? We cut out the old, prepare the joints and apply the right sealant.
- Cracked mastic round a front door frame
- Crumbling sand mastic round a window
- Modern sealant on a period surround
About our sand mastic in Chalton
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We work on tenement windows, timber door frames and stone surrounds, and people most often call us about weathered mastic on the most exposed windows and a silicone bead on a sash window that spoils the look.
Mastic can only go onto a dry, clean joint, so window work in Chalton is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Where
- Chalton (PO8)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we’ll confirm what’s needed.
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Nearby places to Chalton
Other services in Chalton
Why deal with it now?
If you are redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. In a small place like Chalton, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
What you get with us
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
- 4.9 on Google from 180+ five-star reviews
- We never seal over old sealant
Read what affects the cost and what customers say.
Aftercare tips
To keep the joints looking good and working properly:
- Plan mastic work ahead of painting
- Clear gutters so water does not pour onto the windows
- Find out about consent before window work on a listed home
- Take care around the mastic when scraping paint
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Chalton: your questions answered
Do you work for landlords with property near Rowlands Castle station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover Chalton for sand mastic?
Yes, Chalton is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear price.
Which is right for my windows, sand mastic or modern sealant?
We will help you decide. Sand mastic suits many period homes and newer frames suit modern sealant.
How long does sand mastic take to go off?
The surface skins quite quickly, then hardens over a longer period. The weather and joint depth both affect it.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Do you remove the old sealant?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Is the work guaranteed?
There’s a 12-month guarantee on every job.
How it works
There isn’t much for you to do on the day. Show us the job and we will take it from there. The job generally takes a few hours for a single window, longer for several. In a small place like Chalton, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
How to prepare
- Tell us about any water getting in
- On commercial sites, let us know about site rules
- Move anything stored near the joints
Get a quote
For sand mastic in Chalton, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Honest limits
To be straight with you, some problems need a different trade:
- Crumbling stone or brickwork round the window
- Whether work needs listed building consent
- Timber that has rotted
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Chalton
- Period & listed homes
- Sash and case windows
- Timber door frames
- Tenement windows
- Brick reveals
- Stone surrounds
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Chalton homes and the weather
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. Historic houses like Uppark (about 3.2 miles east) are a reminder that the area around Chalton 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’s traditional sand mastic.
Rented homes near Rowlands Castle station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Chalton is about 3 miles north-east of Horndean, in Hampshire. Jobs in Chalton get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 683 places across Hampshire, from the larger towns to small villages. Portsmouth is on our list too, about 10 miles from Chalton.
Postcode districts we cover here for sand mastic: PO8. Neighbouring places we cover for sand mastic include Blendworth (2 miles south-west), Buriton (3 miles north), Forestside (3 miles south-east), West Marden (3 miles south-east) and Weston (4 miles north). Within a short drive, we also cover Gosport (12 miles south-west), Havant (5 miles south), Fareham (12 miles south-west), Horndean (3 miles south-west), Alton (15 miles north) and Hedge End (15 miles west).
Landmarks near Chalton
We work in homes and buildings around Ditcham Park and the streets around them. The closest station to Chalton is Rowlands Castle station, roughly 3.1 miles south. Other landmarks nearby include Clanfield Earthwork (1.2 miles north-west) and Petersfield Community Hospital (4.7 miles north). Not far away are Windmill Hill.
Common problems we fix in Chalton
Water gets into small cracks in the mastic and loosens it further. Exposed elevations usually fail first.
It’s worth asking for a quote if you see:
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
Homes close to Church of St Michael include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
What your quote should include
- Whether you can choose the colour
- Whether all the old sealant comes out first
- What the cure time is
- What happens if they find a problem under the old sealant