West Sussex · England
Sand Mastic in East Marden
Professional sand mastic in and around East Marden, with old sealant always removed completely and a 12-month guarantee.
- Draughts and rain around sash boxes
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
Why deal with it now?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and blends with the stone or brick. In a small place like East Marden, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What you get with us
- More than 20 years in sealant work
- Rated 4.9 stars on Google
- Trusted Arbo and Everbuild sealants
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced and customer reviews.
Sand mastic in East Marden, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. If you are dealing with silicone on a period window that looks wrong and old sand mastic that has cracked, crumbled or fallen out, we can put it right.
Around East Marden, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Each job carries a 12-month guarantee.
- Place
- East Marden (PO18)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What sand mastic looks like in East Marden
With historic houses such as Uppark (about 2.6 miles north-west) nearby, there’s older building stock in the area around East Marden 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. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around East Marden, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
East Marden is about 6 miles north-east of Emsworth, in West Sussex. Homes, rented property, offices and hotels in East Marden can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. East Marden is one of 371 places in West Sussex where we work. You can also see our page for Portsmouth, roughly 13 miles from East Marden.
Here we cover the PO18 postcode area for sand mastic. Neighbouring places we cover for sand mastic include Compton (2 miles west), Chilgrove (2 miles east), Didling (3 miles north-east), Elsted (3 miles north) and East Harting (3 miles north). Further out, we also cover Bognor Regis (12 miles south-east), Chichester (7 miles south-east), Selsey (14 miles south), Emsworth (6 miles south-west), Portfield (7 miles south-east) and Yapton (13 miles south-east).
Landmarks near East Marden
Nearby you will also find Museum of Gardening (3.6 miles east). The countryside around East Marden includes Bow Hill and Kingley Vale National Nature Reserve.
How we quote for sand mastic
We quote each job individually. This is what makes a difference:
- Mould in or behind the old joints
- The old material and how stubborn it is
- The size of the job
- How easy the joints are to reach
What it costs depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
Asking for a quote
Before you ask for a quote, have a think about:
- Where the job is, and your postcode
- Whether it’s a home or a business
- How we’d reach the joints
- A few pictures by email, if you can
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or send us an email and describe the job, and photos are welcome.
When to call us in East Marden
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
The problems people generally mention when they call include:
- Gaps round a timber door in stone or brick
- Patchy fillers round a sash window
- Weathered mastic on the most exposed windows
- Modern sealant on a period surround
For an older house near a landmark such as Church of St Peter, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- What product goes in the joint
- How the joint is cleaned and prepared
- Whether they’re fully insured
- When the joint can take water or movement
Places near East Marden
Also in East Marden
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Common questions in East Marden
What guarantee comes with sand mastic in East Marden?
All our work, in East Marden and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Do you cover smaller places like East Marden?
Yes, East Marden is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can sand mastic be painted?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Are you fully insured?
Yes. We are fully insured for domestic and commercial work.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
How long does sand mastic take to go off?
It takes a while. It skins first and hardens fully later, and we’ll tell you what to expect.
Is it OK to seal over old sealant?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
How the visit works
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. Once we have agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for a single window, longer for several. Somewhere like East Marden needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Mention if the joints have been sealed before
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To get started, call 0345 464 0079 or send us an email.
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When it is not the sealant
In fairness, there are a few things sealant won’t fix:
- Masonry that needs repairing
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sash cords, weights and draught-proofing of the sashes
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Brick reveals
- Stone surrounds
- Period & listed homes
- Sash and case windows
- Timber door frames
- Tenement windows
Different surfaces, different methods
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Stone surrounds
The stone is treated with care when the old mastic comes out.