East Sussex · England
Sand mastic for sash & case windows in Dallington, East Sussex
Sand mastic for Dallington and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Crumbling sand mastic round a window
- Weathered mastic on the most exposed windows
- Open joints round the window box
Sand mastic in Dallington
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Like-for-like sand mastic is often the preferred finish. If you are dealing with silicone on a period window that looks wrong and patchy fillers round a sash window, we can put it right, on timber door frames, stone surrounds and period & listed homes alike.
Mastic can only go onto a dry, clean joint, so window work in Dallington is booked around the forecast. 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 call 0345 464 0079 or drop us an email.
- Where
- Dallington (TN21)
- Region
- East Sussex
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Do you need sand mastic in Dallington?
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber, and they normally need raking out.
Common reasons people contact us include:
- Gaps between timber frames and stone or brick
- Window mastic to renew ahead of painting
- Old cement repairs round a window that have failed
- Wind and rain getting in round a sash window
In the older streets around The Parish Church of St Giles, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- How hidden problems are handled
- Whether all the old sealant comes out first
- How the surfaces are prepared before sealing
- How long to leave it before use
The process
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. The job usually takes a few hours for a single window, longer for several, and we tell you how long to leave it before we go. In a small place like Dallington, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Clear the area around the work
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
For sand mastic in Dallington, call 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 work begins.
Advice
Also near Dallington
Other services in Dallington
Your questions about sand mastic in Dallington
Is Dallington in your area for sand mastic?
Yes, Dallington is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Do you cover smaller places like Dallington?
Yes. Dallington is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long does the job take?
That depends on the amount of work, but as a guide it takes a few hours per window, depending on the condition of the joints. We will give you a better idea when we quote.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
How we quote for sand mastic
You will get a clear quote before work begins. It takes into account:
- Any working-time requirements on site
- Any mould that needs treating
- The size of the job
- How much old sealant there is and how hard it is to remove
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, ring 0345 464 0079 or send us an email and we will give you an honest view and a quote.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- A few pictures by email, if you can
- Any previous sealing or DIY work
- Any access issues, like height or stairs
- Roughly how big the job is
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or drop us an email.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Check the mastic when you check the paintwork
- Keep modern sealant off the mastic
- Find out about consent before window work on a listed home
- Take care around the mastic when scraping paint
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Surface by surface
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Windows and doors in Dallington
Rainfall in the South East is lower than in much 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 Bateman's (about 3.1 miles north) nearby, there’s older building stock in the area around Dallington 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.
Schools such as Dallington Church of England Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Dallington is about 7 miles north-east of Hailsham, in East Sussex. If you need sand mastic in Dallington, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover East Sussex. Dallington is one of 289 places in East Sussex where we work. Our Brighton page covers work nearby (23 miles or so).
Here we cover the TN21 postcode area for sand mastic. Neighbouring places we cover for sand mastic include Wood's Corner (1 mile east), Rushlake Green (2 miles west), Punnett's Town (2 miles north-west), Brownbread Street (3 miles south-east) and Burwash Common (3 miles north). We also work in nearby towns such as Eastbourne (12 miles south), Hastings (10 miles south-east), Bexhill-on-Sea (8 miles south-east), Hailsham (7 miles south-west), Crowborough (11 miles north-west) and St Leonards (11 miles south-east).
Around Dallington
Other landmarks nearby include Old Castle (within half a mile west) and Hellingly Hospital (5.6 miles south-west).
Leave it or put it right?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. Around Dallington, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
What you get with us
- Tidy, careful work
- Sanitary silicone with an anti-fungal additive in wet areas
- Trusted Arbo and Everbuild sealants
- An ARBOMaster approved applicator
Take a look at what affects the cost and customer reviews.