Surrey · England
Walliswood Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Walliswood. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where the frame meets the masonry
- Wind and rain getting in round a sash window
- Modern sealant on a period surround
About our sand mastic in Walliswood
Across Walliswood, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. If you have gaps round a timber door in stone or brick and silicone on a period window that looks wrong, we can put it right, whatever the surface.
Mastic can only go onto a dry, clean joint, so window work in Walliswood is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Walliswood (RH5)
- Region
- Surrey
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What sand mastic looks like in Walliswood
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.
If you live in an older home near Church of St John the Baptist, the joint between an old wall and a newer frame is usually the first place rain gets in.
Walliswood is about 6 miles north-west of Horsham, in Surrey. Anywhere in RH5, our applicators can take on sand mastic. Walliswood is one of 395 places in Surrey where we work for sand mastic. We also work in Crawley, about 9 miles from Walliswood.
Postcode districts we cover here for sand mastic: RH5. Streets in the area include Horsham Road, Standon Lane and Oakfields. Other places close to Walliswood include Mayes Green (1 mile north), Ewhurst Green (2 miles north-west), Ellen's Green (2 miles south-west), Ewhurst (2 miles north-west) and Cranleigh (4 miles west). Within a short drive, we also cover Guildford (11 miles north-west), Woking (15 miles north-west), Epsom (15 miles north), Horley (11 miles east), Redhill (12 miles north-east) and Reigate (11 miles north-east).
Near you in Walliswood
In Walliswood, that means homes and buildings near Wallis Wood and The Scarlett Arms Public House and the streets around them. For rail, the closest station is Ockley station, about 3.1 miles north-east. Nearby you’ll also find Abinger Castle (4.8 miles north) and Horsham Hospital (5.5 miles south-east). Not far away are Vann Lake and Leith Hill.
For landlords and businesses
If you manage several properties in or around Walliswood, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Also near Walliswood
More services for Walliswood
Surface by surface
Sash and case windows
The mastic round a sash window is on show so we finish it carefully.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
Should I try it myself first?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Walliswood questions
Do you cover Walliswood for sand mastic?
Yes, Walliswood is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
Is Walliswood within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Are you insured?
Yes. We’re fully insured.
How do I get a quote for sand mastic in Walliswood?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will advise.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Ask us before painting near the mastic
- Make sure water runs off the sill
- Have rotten timber repaired before new mastic goes in
- Do not run silicone over sand mastic
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
How it works
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a single window, longer for several, depending on the size of the job. In a small place like Walliswood, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- Mention any parking rules near the property
- Mention if the joints have been sealed before
- On commercial sites, let us know about site rules
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or send us an email with the details and send photos if you have them.
Advice
Common problems we fix in Walliswood
Shallow joints are a common cause. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
It’s worth asking for a quote if you see:
- Gaps between timber frames and stone or brick
- Wind and rain getting in round a sash window
- Window mastic to renew ahead of painting
- Old sand mastic that has cracked, crumbled or fallen out
For landlords with property near Ockley station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before booking
- Which sealant they’ll use, and why
- The length of the guarantee
- Is the old sealant removed completely?
- What preparation is included
Why deal with it now?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry so renewing it early protects the window. In a small place like Walliswood, 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: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will explain what it covers.
What you get with us
- An ARBOMaster approved applicator
- We never seal over old sealant
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
Take a look at how sealant jobs are priced and customer reviews.