Kent · England

Grove Green Sand Mastic

Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Grove Green. Fully insured, ARBOMaster approved and guaranteed for a year.

  • Cement or filler used on old window joints that has cracked
  • Mastic round period door frames that has failed
  • Mastic worn away on windows facing the weather

Need sand mastic in Grove Green?

Sand mastic for homes and businesses in Grove Green

Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. If you have cement or filler used on old window joints that has cracked and open joints round the window box, we can put it right, on timber door frames, tenement windows and stone surrounds alike.

Homes around Grove Green 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.

Big or small, you get the same 12-month guarantee in Grove Green and across Kent.

Place
Grove Green (ME14)
Wider area
Kent
Guarantee
A year, on every job
Quotes
A clear quote up front
Phone
0345 464 0079
Last updated
26 October 2026
Applicator reaching up to seal an external door frame on a sunny day

Honest limits

We’d rather tell you now than do work that won’t last, so these are the limits:

  • Sash cords, weights and draught-proofing of the sashes
  • Timber that has rotted
  • Masonry that needs repairing

Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.

Joints and surfaces we work on

  • Sash and case windows
  • Period & listed homes
  • Tenement windows
  • Stone surrounds
  • Brick reveals
  • Timber door frames

What the job involves on each surface

Timber door frames

Doors face weather and wear and the mastic can crack early. We rake it out and renew it.

Brick reveals

Loose mastic comes out and deep gaps are packed before pointing.

Grove Green homes and the weather

The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Stoneacre (about 2.5 miles south-east) are a reminder that the area around Grove Green has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.

Letting a property close to Bearsted station? Then any sash windows need sound mastic to keep draughts and rain out.

Grove Green is about 1 mile east of Foley Park, in Kent. If you need sand mastic in Grove Green, it’s easy to get a quote: please ring 0345 464 0079 or email us. We are based in Crawley and cover Kent, Grove Green included. 922 places in Kent are on our list, from the larger towns to small villages. Our London page covers work nearby, about 32 miles away.

Jobs for sand mastic in ME14 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on New Cut Road, Hampton Road and Bargrove Road or a nearby road, we can help. We also cover the places around Grove Green: Penenden Heath (1 mile west), Weavering (1 mile south-east), Foley Park (1 mile west), Harbourland (1 mile north-west) and Detling (1 mile north-east). Larger places within reach include Sittingbourne (9 miles north-east), Gravesend (13 miles north-west), Tonbridge (13 miles south-west), Faversham (15 miles east), Northfleet (14 miles north-west) and Minster (14 miles north-east).

Landmarks near Grove Green

We work in homes and buildings around Bell Inn, Valley Park School and Vinters Valley Park, among other places. Grove Green’s nearest station is Bearsted station, about 1.3 miles south-east of the centre. Well-known places in the area include KIMS hospital (under half a mile north-east) and Queen's Own Royal West Kent Regiment Museum (1.4 miles west). For a walk, there’s Burham Down and Detling Hill.

Map of Grove Green © OpenStreetMap contributors

DIY versus a professional finish

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 fails, we can still redo it.

Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.

When to call us in Grove Green

Timber frames move with the seasons. The movement cracks the mastic little by little.

Signs it’s time to call us include:

  • Open joints round the window box
  • Modern sealant on a period surround
  • Mastic worn away on windows facing the weather
  • Old cement repairs round a window that have failed

If you live in an older home near Church of St Luke, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.

Before you book anyone

  • The length of the guarantee
  • What happens if they find a problem under the old sealant
  • Who does the work, and how experienced they are
  • Whether VAT is included

10 questions to ask before you book

For landlords and businesses

Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.

Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.

Leave it or put it right?

Replacing sash windows is a big decision for a period home and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In an older home around Grove Green, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.

No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.

Why us?

  • 4.9 on Google from 180+ five-star reviews
  • Old sealant always removed completely
  • Quality sealants from Arbo and Everbuild
  • Domestic, commercial and hotel work

Take a look at our cost guide and customer reviews.

What happens on the day

The work is kept neat and contained to the area we’re working on, so you can get on with your day. The job normally takes a few hours for a single window, longer for several, and we explain the cure time before we leave. In a smaller place like Grove Green, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.

  1. First we agree which joints need doing.
  2. We remove the old, loose mastic.
  3. Deep gaps are packed so the mastic sits at the right depth.
  4. The sand mastic is mixed and pressed into the joint by hand.
  5. The surface is finished to suit the stone or brick.

How to prepare

  • For indoor joints, keep the area dry beforehand if you can
  • Mention any tricky access
  • Mention if the joints have been sealed before

Getting a quote

We quote each job on its own, so start by telling us what you need. Just phone 0345 464 0079 or send us an email with the details, and photos are welcome.

Ask for a quote

Advice

Grove Green questions

Is Grove Green within the area you cover?

Yes, Grove Green is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.

Is Grove Green in your area for sand mastic?

Yes. Our work covers London and the South East, and Grove Green is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.

When will the new mastic be hard?

It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.

I’m a tenant. Can you help?

Of course. Check with your landlord; we can send the quote to them too.

Can I paint the new mastic?

It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.

What do you need from me for a quote?

Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or drop us an email.

Where do you work from?

We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.

Can you seal over the old sealant?

No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job