West Sussex · England

New Build Mastic in Balcombe Lane

Plot mastic for developers and snagging failed sealant in new homes for householders, landlords and businesses in Balcombe Lane. Fully insured, ARBOMaster approved and guaranteed for a year.

  • Cracked caulk along new skirting
  • Worktop and upstand sealant coming away
  • New-build shower sealant that has already split

New build mastic in Balcombe Lane

New build mastic in Balcombe Lane, done properly

Building dust is behind a lot of failed new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the sealant actually sticks rather than sitting on a layer of grit. We work on skirting & floors, kitchens and windows & doors, and people most often call us about sealant applied over dusty or wet surfaces and cracks appearing as a new home settles.

Somewhere as small as Balcombe Lane, new homes tend to be conversions, self-builds or a few houses rather than an estate. Each still needs its sealant and floor joints finished properly.

You are covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or send us an email.

Fresh white silicone going into the corner where a shower screen meets the tiled wall
Where
Balcombe Lane (RH17)
Region
West Sussex
Guarantee
A year, on every job
Price
Quoted before any work starts
Call
0345 464 0079
Last updated
26 October 2026

Looking after it afterwards

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

  • Report sealant problems to your builder during the snagging period
  • Record problems with dated photos
  • Follow the cure time we give you
  • Avoid running a DIY bead over the old one

Clean the sealant with a mild detergent and a soft cloth. Keep scourers and harsh chemicals off it, which can damage the surface.

Lifting sealant traps moisture and mould behind it. Resealing before mould gets in keeps the job straightforward.

FAQs for Balcombe Lane

Do you cover smaller places like Balcombe Lane?

Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.

Can you help a landlord with a rental near Balcombe station?

Yes, we work for landlords and agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.

Can new sealant go on top of the old bead?

No. We always remove the existing bead, the joint cleaned and primed where needed, before resealing.

What sealant do you use?

Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.

How long does the job take?

A typical job takes a few hours for most snagging lists, longer for a run of plots, including preparation and clearing up. We will confirm how long when we quote.

Will there be a smell?

Some sealants have a smell while they cure, but it fades. Ventilation helps.

Should I wait before resealing?

For failed seals that let water through, the best time is now. For small cosmetic gaps, waiting until the house has settled can save doing them twice.

Are you an approved applicator?

Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.

What we can’t put right

We won’t take on work that will not last, so these are the limits:

  • Leaks from pipes, valves or wastes, which need a plumber
  • Broken tiles or a split tray
  • Disputes or warranty claims with your builder

If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer.

Where we work in Balcombe Lane

  • Plot handovers
  • Show homes
  • Kitchens
  • Windows & doors
  • Bathrooms & en suites
  • Skirting & floors

Quotes for new build mastic in Balcombe Lane

Call for a quick quote. What matters most is:

  • Which sealant suits the joint
  • The number and length of the joints
  • When we can work, for business premises
  • Any mould that needs treating

We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or send us an email.

What to tell us for a quote

Photos by email are helpful but not essential. Please mention:

  • A few pictures by email, if you can
  • Where the property is
  • The rough size of the job
  • If it’s domestic, commercial or a hotel

The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.

Surface by surface

Skirting and floors

Gaps under skirting are one of the most common new-build snags. We seal it with a flexible sealant that copes with the movement.

Show homes

Bathrooms, kitchens and frames in show homes are sealed or resealed to a neat finish. Tell us when the home is open so we can plan around it.

When to call us in Balcombe Lane

On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, so the bead never bonds properly.

Look out for these signs:

  • Frame joints opening as the plaster dries
  • Shower seals failing in the first year or two
  • Cracked caulk along new skirting
  • Gaps opening as the house dries out and settles

In and around Balcombe Lane, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.

What to look for in a quote

  • How the surfaces are prepared before sealing
  • Whether they’re fully insured
  • How long the guarantee is
  • Whether they seal over old material or remove it

10 questions to ask before booking

The process

Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes anything from a few hours to several days, depending on the number of plots. In a small place like Balcombe Lane, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. We go through the snagging list or plot schedule and agree the joints to do.
  2. Failed or untidy sealant is cut out completely.
  3. We clean off dust from the build and prime the surfaces where the product needs it.
  4. We apply a sealant that suits each joint and tool it to a neat finish.
  5. We check every joint and tell you how long each needs to cure.

How to prepare

  • Let us know if you’ve seen damp or leaks
  • Mention any tricky access
  • Keep children and pets away from the work area

Ask for 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.

Get a quick quote

Related advice

New build mastic around Balcombe Lane

London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

For new homes near Balcombe station, it’s worth checking the sealant early, while snags are still fresh.

Balcombe Lane is about 4 miles south-east of Crawley, in West Sussex. Wherever you are in the RH17 postcode area, we cover new build mastic for homes and businesses. Our area takes in 371 places across West Sussex, large and small.

Jobs for new build mastic in RH17 is quoted and booked the same way as anywhere else. Other places close to Balcombe Lane include Balcombe (1 mile south), Worth Abbey (2 miles north-east), Furnace Green (2 miles north-west), Pease Pottage (3 miles west) and Staplefield (3 miles south-west). Further out, we also cover Crawley (4 miles north-west), Horsham (8 miles west), Haywards Heath (5 miles south), Burgess Hill (8 miles south), East Grinstead (6 miles north-east) and Broadfield (4 miles north-west).

Local landmarks in Balcombe Lane

Locally, jobs take us to homes and businesses close to Oriel High School, among other places. For rail, the closest station is Balcombe station, about 1.3 miles south of the centre. A little further out are Crawley Museum (3.9 miles north-west) and Waterbury Castle (4.8 miles south-east). Green spaces nearby include Blunts Wood and Paiges Meadow and Tilgate Lake.

Map of Balcombe Lane © OpenStreetMap contributors

Leave it or put it right?

A hairline gap at a skirting can wait, but a leaking seal cannot. If you are unsure which you have, call 0345 464 0079 or send us an email with photos and we’ll tell you. Around Balcombe Lane, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.

Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.

What you get with us

  • ARBOMaster approved applicator
  • Full insurance on every job
  • Sanitary silicone with an anti-fungal additive in wet areas
  • Trusted Arbo and Everbuild sealants

Read our cost guide and customer reviews.

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