Surrey · England
Sand mastic for sash & case windows in Shellwood Cross, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Shellwood Cross and across Surrey. Fully insured, ARBOMaster approved and guaranteed for a year.
- A silicone bead on a sash window that spoils the look
- Wind and rain getting in round a sash window
- Gaps where the frame meets the masonry
Sand mastic for homes and businesses in Shellwood Cross
Sand mastic suits most period window surrounds. Newer frames generally get a flexible sealant instead and we will explain which is best for yours. We work on stone surrounds, brick reveals and timber door frames, and people most often call us about mastic dropping out of the joint and a silicone bead on a sash window that spoils the look.
Outdoor sealant needs dry, clean surfaces, so work on frames around Shellwood Cross is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Where
- Shellwood Cross (RH2)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Sand mastic in Shellwood Cross: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
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.
Shellwood Cross is about 3 miles south-east of Dorking, in Surrey. Whether you are in the middle of Shellwood Cross or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Shellwood Cross is one of 395 places in Surrey we cover. Crawley is on our list too, about 7 miles from Shellwood Cross.
Every address in RH2 is within our area for sand mastic. If you are just outside Shellwood Cross, we cover Parkgate (1 mile south), Nalderswood (1 mile east), Newdigate (2 miles south), Norwood Hill (2 miles south-east) and Cudworth (2 miles south). We also work in nearby towns such as Guildford (14 miles west), Woking (15 miles north-west), Epsom (10 miles north), Horley (5 miles east), Redhill (5 miles north-east) and Ewell (11 miles north).
Around Shellwood Cross
Locally, jobs take us to homes and businesses close to Newdigate Brickworks. Shellwood Cross’s nearest station is Holmwood station, roughly 2.5 miles south-west. Nearby you will also find Reigate Priory Museum (3.8 miles north-east) and East Surrey Hospital (4.8 miles east). Not far away are Box Hill and Reigate Heath.
Honest limits
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Sash cords, weights and draught-proofing of the sashes
- Putty and glazing repairs
- Planning or listed building consent (your local planning authority decides)
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Brick reveals
- Stone surrounds
- Timber door frames
- Tenement windows
- Period & listed homes
- Sash and case windows
What affects the cost of sand mastic
Call for a quick quote. The main things that affect it are:
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- Working hours on commercial sites
- The type of sealant required
Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
For sand mastic in Shellwood Cross, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Why it’s worth doing now in Shellwood Cross
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in and new mastic seals them. Where a wall is exposed, as many are in small places like Shellwood Cross, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Why book with us
- ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
- More than 20 years in sealant work
- Domestic, commercial and hotel work
Take a look at our cost guide or customer reviews.
Questions from Shellwood Cross
Can you help a landlord with a rental near Holmwood station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Is Shellwood Cross within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Can I choose the sealant colour?
Most of the time, yes. We’ll explain which colours are available.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll explain our choice.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Do you take out the old sealant first?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Nearby places to Shellwood Cross
What else we do in Shellwood Cross
When to call us in Shellwood Cross
Shallow joints are a common cause. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
It’s worth asking for a quote if you see:
- Mastic dropping out of the joint
- Modern sealant on a period surround
- Mastic that needs renewing before redecorating
- Draughty sash windows at the surround
For landlords with property near Holmwood station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- How long the guarantee is
- What insurance they hold
- What happens if they find a problem under the old sealant
- Whether the sealant suits the joint
What happens on the day
The work is kept neat and contained to the area we’re working on, so you can carry on as normal. Expect the work to take a few hours per window, depending on the condition of the joints. Somewhere as small as Shellwood Cross, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
- For business premises, tell us about site rules or sign-in
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Read more
How to look after the new joints
Looking after new joints is easy:
- Plan mastic work ahead of painting
- Take care around the mastic when scraping paint
- Do not run silicone over sand mastic
- Have rotten timber repaired before new mastic goes in
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.