Essex · England
Sand Mastic in Felsted
Sand mastic across Felsted and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Failed mastic on an exposed elevation
- Cement or filler used on old window joints that has cracked
- Draughty sash windows at the surround
How we handle sand mastic in Felsted
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. We work on sash and case windows, brick reveals and stone surrounds, and common reasons people get in touch are gaps where the frame meets the masonry and a silicone bead on a sash window that spoils the look.
Around Felsted, 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.
You’re covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or send us an email.
- Place
- Felsted (CM6)
- Region
- Essex
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Felsted: your questions answered
Is sand mastic in Felsted guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Is Felsted in your area for sand mastic?
Yes, Felsted is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
Is it messy?
We keep the work tidy. We protect what’s around the joints.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Can I choose the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before any work starts.
How long will you be here?
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.
What exactly is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It’s made with sand and a linseed-oil-based binder.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Windows and doors in Felsted
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Felsted Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Homes close to Church of the Holy Cross include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Felsted is about 6 miles west of Braintree, in Essex. Wherever you are in the CM6 postcode area, we cover sand mastic for homes and businesses. Our area takes in 644 places across Essex, from the larger towns to small villages. You can also see our page for Chelmsford, about 9 miles away.
Here we cover the CM6 postcode area for sand mastic. If you need sand mastic at a property on Station Road, Braintree Road and Chelmsford Road or a nearby road, we can help. We also cover the places around Felsted: Causeway End (1 mile south), Watch House Green (1 mile north-east), Little Dunmow (1 mile west), Bannister Green (1 mile east) and Brookstreet (1 mile west). Larger places within reach include Chelmsford (9 miles south), Braintree (6 miles east), Harlow (15 miles south-west), Maldon (14 miles south-east), Witham (9 miles south-east) and Saffron Walden (14 miles north-west).
What’s near Felsted
In Felsted, that means homes and buildings near The Chequers pub, among other places. Well-known places in the area include Little Easton Moat (4.9 miles north-west) and Braintree Community Hospital (4.6 miles east). Open spaces near Felsted include Phyllis Currie Nature Reserve.
What affects the cost of sand mastic
We quote each job individually. This is what makes a difference:
- When we can work, for business premises
- Any mould that needs treating
- The number of rooms or windows
- The amount of work
No two jobs are quite the same, 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, and we will explain the quote if you ask.
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:
- Pictures of the joints, sent by email
- What’s wrong with the joints now
- Where the property is
- How many joints, rooms or windows are involved
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or drop us an email.
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Avoid patching sand mastic with silicone
- Take care around the mastic when scraping paint
- Look over the window mastic once a year
- Find out about consent before window work on a listed home
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
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. Most jobs then take a few hours for a single window, longer for several. In a small place like Felsted, 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.
- Old mastic and any loose material are raked out.
- 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.
How to prepare
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.
Read more
Also near Felsted
Other services in Felsted
Why it’s worth doing now in Felsted
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Where a wall is exposed, as many are in small places like Felsted, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Combining jobs into one visit is generally more efficient than separate visits. We will give you a clear quote for the lot.
Why Felsted customers choose us
- Trusted Arbo and Everbuild sealants
- Anti-fungal sanitary silicone in wet areas
- 20+ years of sealant experience
- Tidy, careful work
Take a look at how sealant jobs are priced and customer reviews.
Landlord and commercial work in Felsted
If you manage several properties in or around Felsted, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Landlords and letting agents in Felsted can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for.
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Planning or listed building consent (your local planning authority decides)
- Rotten sashes, sills or window boxes (a joiner’s job)
- Masonry that needs repairing
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Felsted
- Period & listed homes
- Timber door frames
- Brick reveals
- Stone surrounds
- Tenement windows
- Sash and case windows
Surface by surface
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. Sand mastic is shaped by hand to suit.
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.