East Sussex · England
Sand mastic for sash & case windows in Cock Marling, East Sussex
Problem with your window and door surrounds in Cock Marling? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Mastic worn away on windows facing the weather
- Wind and rain getting in round a sash window
- Tired mastic found when preparing windows for paint
Surface by surface
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.
Sand mastic in Cock Marling, done properly
On many period windows, sand mastic looks right and suits the building. On modern frames we’d normally use a flexible sealant, and we’ll talk through which suits your home. If you’re dealing with draughty sash windows at the surround and cracked mastic round a front door frame, we can put it right.
Outdoor sealant needs dry, clean surfaces, so work on frames around Cock Marling is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Cock Marling (TN31)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for sand mastic
For a quick quote, just ask. What matters most is:
- When we can work, for business premises
- The product the joint needs
- The size of the job
- Access and height
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Any access issues, like height or stairs
- Photos by email, if that’s easy
- Roughly how big the job is
- Whether it has been sealed before
For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
How the visit works
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. In a small place like Cock Marling, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
- Let us know about earlier repairs to the joints
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, ring 0345 464 0079 or email us.
Related advice
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Leave it or put it right?
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 Cock Marling, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, call 0345 464 0079 or email us and we will give you an honest view and a quote.
Why book with us
- Old sealant always removed completely
- One-year guarantee on every job
- Homes, businesses and hotels
- Rated 4.9 stars on Google
Take a look at what affects the cost or our reviews.
Places near Cock Marling
Other services in Cock Marling
Work for landlords, hotels and businesses
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.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Windows and doors in Cock Marling
Cock Marling is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Historic houses like Lamb House (about 2.5 miles east) are a reminder that the area around Cock Marling has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Historic houses such as Lamb House, about 2.5 miles east, show how far back building around Cock Marling goes, and older homes nearby need a sealant that suits their walls. Rented homes near Winchelsea station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Cock Marling is about 7 miles north-east of Hastings, in East Sussex. Whether you’re in the middle of Cock Marling or further out, we cover sand mastic for every kind of property. Cock Marling is one of 289 towns and villages in East Sussex where we work for sand mastic. We also work in Brighton, around 36 miles away.
Here we cover the TN31 postcode area for sand mastic. If you’re just outside Cock Marling, we cover Udimore (1 mile west), Icklesham (2 miles south), Broad Street (2 miles south-west), Broadland Row (2 miles west) and Peasmarsh (2 miles north). Larger places within reach include Hastings (7 miles south-west), Bexhill-on-Sea (11 miles south-west), St Leonards (8 miles south-west), Hastings Old Town (7 miles south-west), Belmont (7 miles south-west) and Hollington (7 miles south-west).
What’s near Cock Marling
For rail, the closest station is Winchelsea station, roughly 1.1 miles east of the centre. Well-known places in the area include Camber Castle (2.4 miles east) and Winchelsea Court Hall Museum (1.6 miles south-east). The countryside around Cock Marling includes Flatropers Wood.
Questions from Cock Marling
Do you cover smaller places like Cock Marling?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for landlords with property near Winchelsea station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
How long does sand mastic take?
Most jobs take a few hours per window, depending on the condition of the joints, including preparation and clearing up. Your quote will say how long we expect yours to take.
How long does sand mastic take to go off?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.
Do you guarantee sand mastic work?
Every job comes with our one-year guarantee, and we are fully insured.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Ask the planning authority about consent for listed or conservation-area homes
- Check the mastic when you check the paintwork
- Have rotten timber repaired before new mastic goes in
- Ask us before painting near the mastic
Do not touch or press the mastic while it hardens. It skins over quickly but needs longer to fully harden.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.