Surrey · England
Sand mastic for sash & case windows in Parkgate, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Parkgate. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps where the frame meets the masonry
- Cracked mastic round a front door frame
- Mastic worn away on windows facing the weather
About our sand mastic in Parkgate
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. If you have a silicone bead on a sash window that spoils the look and cement or filler used on old window joints that has cracked, we can help.
Mastic can only go onto a dry, clean joint, so window work in Parkgate is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Parkgate (RH5)
- Wider area
- Surrey
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Parkgate
Filling over old, loose mastic does not last. Raking out and preparing the joint gives it a sound base so the new work lasts. Around Parkgate, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why Parkgate clients choose us
- 20+ years of sealant experience
- Any old sealant cut out fully, not covered over
- 180+ five-star Google reviews
- Every job guaranteed for a year
Take a look at what affects the cost or our reviews.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours per window, depending on the condition of the joints. Somewhere as small as Parkgate, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
- Mention any sign-in or site rules at work premises
Get a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
Related advice
Parkgate homes and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Around Parkgate, as everywhere, sand mastic is only as good as the preparation behind it.
Parkgate is about 4 miles south-east of Dorking, in Surrey. Homes, rented property, offices and hotels in Parkgate is covered for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. 395 places in Surrey are on our list. There’s also a page for Crawley, roughly 6 miles from Parkgate.
We cover every part of RH5 for sand mastic and the streets around it. Sand mastic is available to properties on Broad Lane, Mill Lane and Becket Wood and the roads around them. Neighbouring places we cover for sand mastic include Shellwood Cross (1 mile north), Newdigate (1 mile south-west), Cudworth (2 miles south), Nalderswood (2 miles north-east) and Norwood Hill (2 miles east). Within a short drive, we also cover Guildford (14 miles west), Epsom (11 miles north), Horley (5 miles east), Redhill (6 miles north-east), Ewell (12 miles north) and Reigate (5 miles north-east).
Around Parkgate
In Parkgate, that means homes and buildings near Newdigate Brickworks, among other places. The nearest railway station is Holmwood station, about 2.1 miles west. Nearby you’ll also find Langley Green Hospital (5.1 miles south-east) and Betchworth Castle (3.8 miles north). The countryside around Parkgate includes Reigate Heath and Leith Hill.
Landlord and commercial work in Parkgate
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured for the work.
What the job involves on each surface
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
What we’re called out for in Parkgate
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber, and they usually need raking out.
If you can see any of these, it’s time to have the joints looked at:
- Mastic round period door frames that has failed
- Crumbling sand mastic round a window
- Weathered mastic on the most exposed windows
- Window mastic to renew ahead of painting
Rented homes near Holmwood station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- Which colour the sealant will be
- Who turns up on the day
- What happens if they find a problem under the old sealant
- Whether VAT is included
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Get any rot dealt with first
- Check the mastic when you check the paintwork
- Sort the mastic before the decorators arrive
- Find out about consent before window work on a listed home
Don’t run silicone over the new mastic. If anything cracks, get it looked at rather than patching it.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Common questions in Parkgate
Is Parkgate within the area you cover?
Yes. Parkgate is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Parkgate for sand mastic?
Yes, Parkgate is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
What is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Should I use sand mastic or silicone?
It depends on the window. Period windows in stone or brick generally suit sand mastic and newer frames normally get a flexible sealant.
How long does sand mastic take?
That depends on the amount of work, but as a guide it takes a few hours for a single window, longer for several. We’ll give you a better idea when we quote.
Do you guarantee sand mastic work?
All our work has a one-year guarantee, and we’re fully insured.
Do you offer different sealant colours?
Usually, yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before work begins.