Kent · England
Sand mastic for sash & case windows in Strood, Kent
Our applicators work in Strood 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 12-month guarantee.
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
- Weathered mastic on the most exposed windows
What we do, step by step
We keep the work tidy and contained to the joints we’re treating, so you can carry on as normal. Expect the work to take a few hours per window, depending on the condition of the joints, and we explain the cure time before we leave. In a small place like Strood, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
For a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before we start.
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About our sand mastic in Strood
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. We work on period & listed homes, tenement windows and brick reveals, and common reasons people get in touch are gaps where the frame meets the masonry and mastic dropping out of the joint.
Around Strood, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Strood (TN17)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Strood
Also in Strood
Honest limits
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Sashes that rattle, stick or will not open
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in Strood
- Sash and case windows
- Timber door frames
- Period & listed homes
- Stone surrounds
- Tenement windows
- Brick reveals
Different surfaces, different methods
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
Leave it or put it right?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. Where a wall is exposed, as many are in small places like Strood, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why Strood customers choose us
- 180+ five-star Google reviews
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- We never seal over old sealant
Read our cost guide and our reviews.
Frames and glazing around Strood
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. Historic houses like Smallhythe Place (about 2.6 miles south-east) are a reminder that the area around Strood has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Schools such as Rolvenden Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Strood is about 11 miles south-west of Ashford, in Kent. Jobs in Strood get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Kent, we cover 922 places, and Strood is one of them. Our Crawley page covers work nearby, about 37 miles away.
Every address in TN17 is covered for sand mastic. If you need sand mastic at a property on Rolvenden Hill and Tenterden Road or anywhere close by, our applicators can take on the job. We also cover Rolvenden (1 mile south-west), Rolvenden Layne (1 mile south), West Cross (1 mile west), Parkgate (2 miles north) and Broad Tenterden (2 miles east). Within a short drive, we also cover Maidstone (15 miles north), Ashford (11 miles north-east), Paddock Wood (14 miles north-west), Bearsted (15 miles north), Park Wood (13 miles north) and Kennington (13 miles north-east).
Near you in Strood
Typical jobs here are in homes near Turners Field and Homewood School and Sixth Form Centre and the streets around them. A little further out are The C.M Booth Collection (1 mile south-west) and Benenden Hospital (2.4 miles north-west).
What we’re called out for in Strood
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint and we normally remove them.
Keep an eye out for these signs:
- Crumbling sand mastic round a window
- Cracked mastic round a front door frame
- Old cement repairs round a window that have failed
- Modern sealant on a period surround
If you live in an older home near Parish Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- What happens if they find a problem under the old sealant
- How the colour is chosen
- Whether they seal over old material or remove it
- What the quote includes, VAT included or not
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Leave the new mastic unpainted
- Inspect the joints round the windows every year or so
- Make sure water runs off the sill
- Ask a joiner to look at soft timber first
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Landlord and commercial work in Strood
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
FAQs for Strood
Is Strood within the area you cover?
Yes, Strood is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do sand mastic in Strood?
Yes. We work across London and the South East, and Strood is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Do you guarantee sand mastic work?
Every job comes with our 12-month guarantee, and we’re fully insured.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will talk you through it.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.