Kent · England
Aylesham Sand Mastic
We cover Aylesham for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Crumbling sand mastic round a window
- Gaps round a timber door in stone or brick
- Cement or filler used on old window joints that has cracked
About our sand mastic in Aylesham
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you have mastic round period door frames that has failed and mastic dropping out of the joint, we can put it right, on period & listed homes, brick reveals and sash and case windows alike.
Homes around Aylesham 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.
All our work is covered by our one-year guarantee, wherever you are in Kent.
- Location
- Aylesham (CT3)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for sand mastic
Every job gets its own quote. These are the things that affect it:
- How easy the joints are to reach
- The product the joint needs
- The old material and how stubborn it is
- Any mould that needs treating
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What to tell us for a quote
What to tell us when you ask for a quote:
- The type of property
- Pictures of the joints, sent by email
- The problem you’ve noticed
- Roughly how big the job is
There’s no standard price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Landlord and commercial work in Aylesham
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for.
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.
Sand mastic in Aylesham: local notes
With historic houses such as Goodnestone Park (about 1.6 miles north-east) nearby, there’s older building stock in the area around Aylesham 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’s traditional sand mastic. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Aylesham station, any sash windows need sound mastic to keep draughts and rain out. Managing a site like Aylesham Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Aylesham is about 6 miles south-east of Canterbury, in Kent. Wherever you are in the CT3 postcode area, we cover sand mastic for homes and businesses. Aylesham is one of 922 places in Kent where we work. You can also see our page for Chelmsford, roughly 47 miles from Aylesham.
Every address in CT3 is covered for sand mastic. Sand mastic is available to properties on Market Place, Mexborough Square and Derwent Way. We also cover the places around Aylesham: Bloodden (1 mile north), Adisham (1 mile north), Womenswold (1 mile south-west), Woolage Green (2 miles south) and Out Elmstead (2 miles south-west). Larger places within reach include Canterbury (6 miles north-west), Margate (13 miles north-east), Dover (8 miles south-east), Folkestone (10 miles south), Ramsgate (12 miles north-east) and Broadstairs (14 miles north-east).
Around Aylesham
There’s a railway station in Aylesham itself: Aylesham station. Nearby you will also find St Martins Hospital (5.2 miles north-west).
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a single window, longer for several, and the area is left clean. Parking around Aylesham is usually easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention if the joints have been sealed before
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Related advice
Aylesham: your questions answered
Do you cover smaller places like Aylesham?
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.
Can you do sand mastic in Aylesham?
Yes, Aylesham is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses, and we are fully insured.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Is consent needed for window work on a listed home?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Leave it or put it right?
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. Homes in smaller places like Aylesham can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
What you get with us
- Experience in homes, commercial sites and hotels
- One-year guarantee on every job
- 180+ five-star Google reviews
- Sanitary silicone with an anti-fungal additive in wet areas
Looking after it afterwards
Aftercare is simple:
- Get any rot dealt with first
- Do not run silicone over sand mastic
- Check the mastic when you check the paintwork
- Don’t paint over the new mastic
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Towns and villages near Aylesham
What else we do in Aylesham
Signs you need sand mastic in Aylesham
Some old mastic was never deep enough. Mastic that’s too thin cracks and drops out so we make sure the new mastic is the right thickness.
These are the problems we are asked about most:
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps round a timber door in stone or brick
- Patchy fillers round a sash window
- Open joints round the window box
In the older streets around St Peter, the joint between an old wall and a newer frame is generally the first place rain gets in.
What your quote should include
- What product goes in the joint
- Is the old sealant removed completely?
- What preparation is included
- Who does the work, and how experienced they are