Kent · England
Sand mastic for sash & case windows in Godmersham, Kent
Our applicators work in Godmersham on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
- Silicone on a period window that looks wrong
Why it’s worth doing now in Godmersham
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Around Godmersham, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear price for the lot.
Why Godmersham clients choose us
- Full insurance on every job
- 20+ years of sealant experience
- Experience in homes, commercial sites and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
Read our cost guide or customer reviews.
Sand mastic in Godmersham
On many period windows, sand mastic looks right and suits the building. On modern frames we’d normally use a flexible sealant and we will explain which is best for yours. We work on brick reveals, tenement windows and timber door frames, and the jobs we see most are open joints round the window box and cement or filler used on old window joints that has cracked.
Mastic can only go onto a dry, clean joint, so window work in Godmersham is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Godmersham (CT4)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Godmersham
Also in Godmersham
Frames and glazing around Godmersham
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.
If you live in an older home near Church of St Lawrence, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Godmersham is about 7 miles south-west of Canterbury, in Kent. Anywhere in CT4, our applicators can take on sand mastic. Godmersham is one of 922 towns and villages in Kent where we work. You can also see our page for Chelmsford, roughly 41 miles from Godmersham.
Every address in CT4 is within our area for sand mastic. If you need sand mastic at a property on The Street and Eggarton Lane or anywhere close by, our applicators can take on the job. Neighbouring places we cover for sand mastic include Bilting (1 mile south-west), Mountain Street (1 mile north), Chilham (2 miles north), Old Wives Lees (2 miles north) and Shottenden (3 miles north-west). Within a short drive, we also cover Ashford (7 miles south-west), Canterbury (7 miles north-east), Sittingbourne (13 miles north-west), Folkestone (13 miles south-east), Whitstable (10 miles north) and Faversham (7 miles north-west).
Landmarks near Godmersham
We work in homes and buildings around Godmersham Park and the streets around them. The closest station to Godmersham is Chilham station, roughly 1.8 miles north of the centre. Well-known places in the area include William Harvey Hospital (5.8 miles south) and Chilham Castle (1.7 miles north).
When to call us in Godmersham
Shallow joints are a common cause. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
The problems people normally mention when they call include:
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
- Crumbling sand mastic round a window
If you let a flat or house near Chilham station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Questions to ask before you book
- What guarantee comes with the work
- Whether they’re fully insured
- Whether they seal over old material or remove it
- How the surfaces are prepared before sealing
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Get any rot dealt with first
- Check with your local planning authority if your home is listed
- Ask us before painting near the mastic
- Keep sills and gutters clear so water drains away
Do not run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Different surfaces, different methods
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we’ll confirm access.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Timber that has rotted
- Crumbling stone or brickwork round the window
- Cracked or broken glass
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
What we seal
- Brick reveals
- Stone surrounds
- Period & listed homes
- Sash and case windows
- Tenement windows
- Timber door frames
Questions from Godmersham
Can you do sand mastic in Godmersham?
Yes, Godmersham is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Is Godmersham within the area you cover?
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.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints, and the area is left clean when we finish.
Do you guarantee sand mastic work?
Our 12-month guarantee applies on every job.
Do you work for letting agents?
Yes, often. We can quote for several properties at once.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we’re using and why.
I rent my home. Can I book you?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
What we do, step by step
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. It usually takes a few hours per window, depending on the condition of the joints. For a village or hamlet like Godmersham, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
- Clear the area around the work
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Related advice
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.