Surrey · England
Sand mastic for sash & case windows in Castle Green, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Castle Green and across Surrey. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Weathered mastic on the most exposed windows
- Old cement repairs round a window that have failed
- Open joints round the window box
Sand mastic for homes and businesses in Castle Green
We work across Castle Green renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We’re often asked to deal with gaps round a timber door in stone or brick and window mastic to renew ahead of painting, on brick reveals, sash and case windows and tenement windows.
Somewhere as small as Castle Green, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
You get a one-year guarantee, the same in Castle Green as everywhere else we work.
- Location
- Castle Green (GU24)
- Wider area
- Surrey
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Castle Green
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
How the job changes by surface
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. We renew it the same way as on windows.
Why it’s worth doing now in Castle Green
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. Where a wall is exposed, as many are in small places like Castle Green, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We will give you a clear price for the lot.
Why book with us
- Trusted Arbo and Everbuild sealants
- Domestic, commercial and hotel work
- 4.9 on Google from 180+ five-star reviews
- More than 20 years in sealant work
Take a look at our cost guide and what customers say.
Frames and glazing around Castle Green
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Botleys Mansion (about 4.2 miles north-east) nearby, there’s older building stock in the area around Castle Green as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Homes close to Church of St Lawrence include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Letting a property close to Brookwood station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Castle Green is about 2 miles north-west of Woking, in Surrey. Anywhere in GU24, our applicators can take on sand mastic. Our Surrey coverage runs to 395 places, Castle Green among them. We also work in Reading, around 18 miles away.
Here we cover the GU24 postcode area for sand mastic. Whether your property is on Scotts Grove Road, Guildford Road and Scott's Grove Close or anywhere close by, our applicators can take on the job. Other places close to Castle Green include Penny Pot (1 mile north-west), Coxhill Green (1 mile north-east), Chobham (1 mile north-east), West End (1 mile west) and Bisley (1 mile south-west). Larger places within reach include Guildford (6 miles south), Camberley (5 miles west), Epsom (15 miles east), Farnham (12 miles south-west), Ewell (15 miles east) and Egham (7 miles north-east).
What’s near Castle Green
Locally, jobs take us to homes and businesses close to The Sun Public House, Gordon's School and Milford Green and Coxhill Green, among other places. The closest station to Castle Green is Brookwood station, roughly 2.6 miles south-west. Nearby you’ll also find Brookwood Hospital (1.6 miles south) and Chobham Museum (0.8 miles north-east). Green spaces nearby include Brookwood Lye.
Also in Castle Green
Castle Green questions
Can you help a landlord with a rental near Brookwood station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Do you cover Castle Green for sand mastic?
Yes. We work across London and the South East, and Castle Green is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Can I paint the new mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Can you match the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Can I add another job to the visit?
Yes, we can. More than one area can be quoted together.
Where are you based?
We are a Crawley-based firm. We work across South East England, London and Scotland.
Do the sealants smell?
Some sealants have a smell while they cure. Ventilation helps.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant.
Quotes for sand mastic in Castle Green
The quote reflects the job in front of us. We take into account:
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- Whether the work is at height
- The number and length of the joints
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it has been sealed before
- What’s wrong with the joints now
- The type of property
- Photos by email, if that’s easy
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details and send photos if you have them.
Aftercare tips
Looking after new joints is easy:
- Don’t run silicone over sand mastic
- Check with your local planning authority if your home is listed
- Ask a joiner to look at soft timber first
- Inspect the joints round the windows every year or so
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
Signs you need sand mastic in Castle Green
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
Look out for any of the following:
- Wind and rain getting in round a sash window
- Patchy fillers round a sash window
- Gaps between timber frames and stone or brick
- Tired mastic found when preparing windows for paint
For site and facilities teams at buildings such as St Lawrence CofE (Aided) Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- What the cure time is
- Is VAT in the price?
- Whether they seal over old material or remove it
- How the joint is cleaned and prepared
How the visit works
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. Once we have agreed what’s being done, the area is protected and the work begins. It normally takes a few hours per window, depending on the condition of the joints. In a small place like Castle Green, 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.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Move anything stored near the joints
- Let us know if you’ve seen damp or leaks
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or send us an email.