Essex · England
The Hythe Sand Mastic
Window and door surrounds in The Hythe need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Mastic round period door frames that has failed
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
Sand mastic in The Hythe, done properly
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditional guidance is not to paint over it and we’ll advise if you’re redecorating. Typical jobs include open joints round the window box and a silicone bead on a sash window that spoils the look, across tenement windows, period & listed homes and sash and case windows.
Homes around The Hythe range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- The Hythe (CO1, CO4, CO2)
- Region
- Essex
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
The process
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours per window, depending on the condition of the joints. Parking around The Hythe is usually easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- Mention any tricky access
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or send us an email.
Advice
Can I do it myself?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
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.
Also in The Hythe
Why deal with it now?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. In an older home around The Hythe, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
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. You’ll know the price before we begin.
Why choose Mr Mastic in The Hythe
- Trusted Arbo and Everbuild sealants
- Experience in homes, commercial sites and hotels
- 4.9 on Google from 180+ five-star reviews
- We leave the area clean and tidy
Sand mastic in The Hythe: 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.
Managing a site like Kendall Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near Church of St Leonard at the Hythe, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
The Hythe is about 1 mile south-east of Colchester, in Essex. Our applicators cover sand mastic for householders, landlords and businesses in The Hythe and the surrounding area. 644 places in Essex are on our list. Chelmsford is on our list too, about 21 miles from The Hythe.
Here we cover the CO1, CO4 and CO2 postcode area for sand mastic. Whether your property is on Port Lane, Beche Road and Haven Road or anywhere close by, we can help. We also cover Greenstead (1 mile north-east), Old Heath (1 mile south), Berechurch (2 miles south-west), Wivenhoe Cross (2 miles south-east) and Crockleford Heath (2 miles north-east). Within a short drive, we also cover Clacton-on-Sea (11 miles south-east), Maldon (15 miles south-west), Witham (14 miles south-west), Harwich (15 miles east), Halstead (13 miles west) and Heybridge (14 miles south-west).
Local landmarks in The Hythe
Around The Hythe, our work takes us to homes and buildings near Colchester Academy, Donyland Lodge and The Rising Sun Public House and the streets around them. There’s a railway station in The Hythe itself: Hythe station. Nearby you’ll also find Colchester Castle (1.1 miles north-west) and Essex County Hospital (1.6 miles west). For a walk, there’s Cockaynes Wood.
Honest limits
New sealant cannot fix everything, and we’d rather say so up front. Sealant won’t put right:
- Decayed frames that need repair
- Sashes that need overhauling
- Broken panes
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
Where we work in The Hythe
- Stone surrounds
- Period & listed homes
- Brick reveals
- Sash and case windows
- Timber door frames
- Tenement windows
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
How we quote for sand mastic
We do not publish a price list, because no two jobs are the same. The quote depends on:
- Any mould that needs treating
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
- The size of the job
What you pay reflects the work, not guesswork. That is why we ask about the job first.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- How we’d reach the joints
- Where the property is
- If someone has resealed it before
- A few pictures by email, if you can
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Do you need sand mastic in The Hythe?
Previous repairs in cement or silicone often trap water or crack away. They do not move with the timber, and they normally need raking out.
It’s worth asking for a quote if you see:
- Cracked mastic round a front door frame
- Draughty sash windows at the surround
- Failed mastic on an exposed elevation
- Gaps between timber frames and stone or brick
If you let a flat or house near Hythe station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Questions to ask before you book
- What the quote includes, VAT included or not
- How hidden problems are handled
- The length of the guarantee
- How long to leave it before use
The Hythe: your questions answered
Is The Hythe in your area for sand mastic?
Yes. Our work covers London and the South East, and The Hythe is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Do you cover smaller places like The Hythe?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Can you match the sealant colour?
Yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before work begins.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.