West Sussex · England

Sand Mastic in Goddards Green

Problem with your window and door surrounds in Goddards Green? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.

  • Silicone on a period window that looks wrong
  • Open joints round the window box
  • Cracked mastic round a front door frame

Sand mastic in Goddards Green

Signs you need sand mastic in Goddards Green

Timber frames move with the seasons. That movement opens up the mastic joint over time.

Most people get in touch after spotting something like this:

  • Failed mastic on an exposed elevation
  • Gaps round a timber door in stone or brick
  • Gaps where the frame meets the masonry
  • Crumbling sand mastic round a window

For landlords with property near Burgess Hill station, cracked sand mastic around sash windows lets in the draughts tenants complain about.

Before you book anyone

  • Is VAT in the price?
  • How the joint is cleaned and prepared
  • What product goes in the joint
  • How long the guarantee is

10 questions to ask before you book

Sand mastic in Goddards Green, done properly

Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it and tidies the surround. Typical jobs include crumbling sand mastic round a window and tired mastic found when preparing windows for paint, on timber door frames, stone surrounds and brick reveals.

Outdoor sealant needs dry, clean surfaces, so work on frames around Goddards Green is planned for dry weather. Let us know about access to all the frames, upstairs ones included.

The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.

Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter
Location
Goddards Green (BN6)
Wider area
West Sussex
Cover
12 months on all our work
Quote
Quoted before any work starts
Telephone
0345 464 0079
Updated
26 October 2026

What sand mastic looks like in Goddards Green

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. With historic houses such as Ockenden Manor (about 3 miles north-east) nearby, there’s older building stock in the area around Goddards Green as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.

If you live in an older home near St Edward the Confessor, the joint between an old wall and a newer frame is usually the first place rain gets in. For site and facilities teams at buildings such as St Paul's Catholic College, the mastic around its windows and doors needs looking after like any other building’s.

Goddards Green is about 2 miles west of Burgess Hill, in West Sussex. Every kind of property in Goddards Green can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. Our West Sussex coverage runs to 371 places, and Goddards Green is one of them. Brighton is on our list too, about 9 miles from Goddards Green.

Postcode districts we cover here for sand mastic: BN6. Local streets include Cuckfield Road and High Hatch Lane. Being close to the A2300, Goddards Green is easy for our applicators to reach. Other places close to Goddards Green include Hickstead (1 mile west), Abbotsford (1 mile east), Jacob's Post (1 mile east), Sayers Common (2 miles south-west) and Ansty (2 miles north). Further out, we also cover Crawley (10 miles north), Horsham (9 miles north-west), Worthing (14 miles south-west), Haywards Heath (4 miles north-east), East Grinstead (13 miles north-east) and Shoreham-by-Sea (10 miles south-west).

Landmarks near Goddards Green

Typical jobs here are in homes near Southway Junior School. The closest station to Goddards Green is Burgess Hill station, roughly 2.1 miles south-east. Other landmarks nearby include Burgess Hill Museum (2 miles east) and Clayton Castle (4.1 miles south). Open spaces near Goddards Green include Wolstonbury Hill and Bedelands Farm Nature Reserve.

Map of Goddards Green © OpenStreetMap contributors

Surface by surface

Brick reveals

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

Stone surrounds

Stone openings are rarely perfectly straight, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.

What we do, step by step

At the end, we look at the finished work together. The work normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. Somewhere as small as Goddards Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.

  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. We dress the finish so it sits neatly against the masonry.

Getting ready for the visit

  • Mention any tricky access
  • For business premises, tell us about site rules or sign-in
  • Try not to wet indoor joints just before the visit

Ask for a quote

Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will explain what’s involved and give you a clear quote.

Ask for a quote

Related advice

For landlords and businesses

Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.

Housing providers, facilities teams and property managers book us too in Goddards Green and across West Sussex. Several sites can be quoted together, and we’re fully insured.

How we quote for sand mastic

The price is agreed before any work begins. It takes into account:

  • The number of rooms or windows
  • Mould in or behind the old joints
  • Which sealant suits the joint
  • The old material and how stubborn it is

Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.

Asking for a quote

When you call or email, it’s useful to know:

  • Any access issues, like height or stairs
  • Photos by email, if that is easy
  • Whether it has been sealed before
  • The rough size of the job

If you’re in Goddards Green and need sand mastic, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.

DIY versus a professional finish

If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.

Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.

Goddards Green questions

I let a flat near Burgess Hill station. Can you help?

Yes. We work for landlords and agents as well as homeowners. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.

Is Goddards Green within the area you cover?

Yes, Goddards Green is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.

Can old silicone round a sash window be swapped for sand mastic?

Usually, yes. With the silicone removed and the joint cleaned we point it with sand mastic.

What does sand mastic cost?

There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.

How long will you be here?

Typically it takes a few hours for a single window, longer for several. Larger jobs naturally take longer.

Can you seal over the old sealant?

No. We remove every bit of old sealant first, so the new sealant bonds properly.

Will you leave a mess?

No. We work neatly, protect the area around the joints and tidy up afterwards.

Do I need permission for sand mastic on a listed building?

It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.

Keeping the joints in good condition

Once the sealant has cured, a few habits help it last:

  • Make sure water runs off the sill
  • Renew mastic before redecorating the windows
  • Go gently near the mastic when preparing windows
  • Ask the planning authority about consent for listed or conservation-area homes

When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.

Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.

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