East Sussex · England
Sand mastic for sash & case windows in Hellingly, East Sussex
Window and door surrounds in Hellingly need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Open joints round the window box
- Window mastic to renew ahead of painting
- Cracked mastic round a front door frame
Why deal with it now?
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. In an older home around Hellingly, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and give you a clear price before we start.
Why book with us
- We never seal over old sealant
- Anti-fungal sanitary silicone in wet areas
- Neat joints and a tidy finish
- 4.9 on Google from 180+ five-star reviews
Read our cost guide and customer reviews.
How we handle sand mastic in Hellingly
Traditional burnt sand mastic blends with stone and brick surrounds. It’s a good fit for period properties, where modern sealant can look out of place. If you have mastic worn away on windows facing the weather and open joints round the window box, we can help.
In a smaller place like Hellingly, some walls face open ground and catch the full force of the weather. That is hard on the mastic around frames and sills.
All of our work is guaranteed for twelve months, in Hellingly and everywhere else we cover.
- Location
- Hellingly (BN27)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Towns and villages near Hellingly
More services for Hellingly
Landlord and commercial work in Hellingly
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Surface by surface
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
How the visit works
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a single window, longer for several. A visit to Hellingly is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we’re working on
- Let us know about stairs, lifts or work at height
How to get a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Read more
Sand mastic in Hellingly: 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. With historic houses such as Horselunges Manor (about 0.6 miles west) nearby, there’s older building stock in the area around Hellingly as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Hawkes Farm Academy? Then larger buildings have plenty of frames, and the mastic around each one ages. Historic houses such as Horselunges Manor, about 0.6 miles west, show how far back building around Hellingly goes, and older homes nearby need a sealant that suits their walls. For landlords with property near Polegate station, any sash windows need sound mastic to keep draughts and rain out.
Hellingly is about 1 mile north of Hailsham, in East Sussex. Whether you are in the middle of Hellingly or further out, we cover sand mastic for every kind of property. Our area takes in 289 places across East Sussex, from the larger towns to small villages. For nearby work, see our Brighton page, about 17 miles away.
Work in BN27 works the same way as everywhere else we cover. Local streets include Station Road, Cheviot Street and Iris Close, and we cover them all. Neighbouring places we cover for sand mastic include Upper Horsebridge (1 mile south-west), Lower Horsebridge (1 mile west), Magham Down (1 mile east), Hailsham (1 mile south) and Tile Hurst (1 mile south-west). We also work in nearby towns such as Eastbourne (7 miles south), Hastings (13 miles east), Bexhill-on-Sea (9 miles east), Seaford (10 miles south-west), Lewes (11 miles west) and Crowborough (12 miles north).
Landmarks near Hellingly
Around Hellingly, our work takes us to homes and buildings near Hailsham Community College, among other places. Hellingly’s nearest station is Polegate station, roughly 4.3 miles south of the centre. A little further out are Hellingly Hospital Railway (less than half a mile north) and Sussex Farm Museum (3.6 miles north).
Quotes for sand mastic in Hellingly
For a quick quote, just ask. The main things that affect it are:
- The size of the job
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- The type of sealant required
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
What we need to know
There’s no need for technical detail. Just tell us:
- Photos by email, if that is easy
- How we’d reach the joints
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved and give you a clear quote.
Common questions in Hellingly
Can you help a landlord with a rental near Polegate station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Will you come out to Hellingly?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
What’s sand mastic made of?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Can you do several jobs on one visit?
Of course. Doing several areas at once is normally more efficient.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
What does sand mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
What we cannot put right
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Crumbling stone or brickwork round the window
- Cracked or broken glass
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Sash and case windows
- Brick reveals
- Stone surrounds
- Timber door frames
- Tenement windows
- Period & listed homes