The Mastic Doctor team standing beside their branded vans outside an office building
West Sussex · England

Mastic sealing for building owners and managing agents in Newtimber, West Sussex

We carry out mastic sealing for building owners, managing agents and housing associations in Newtimber and the surrounding area. Send details for a fixed quote.

  • Failed external movement joints
  • Mastic failing across several blocks on an estate
  • Brittle perimeter mastic across a building
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Mastic sealing for businesses in Newtimber

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Building owners, agents and FMs in Newtimber

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules.

When you manage a building on behalf of an owner, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

How we handle mastic sealing in Newtimber

Most buildings come with mastic joints nobody has looked at since handover and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. Site teams most often ask us about draughts at frames across a block and water getting in round frames after rain, across communal entrances and stairwells, balcony and threshold joints and external wall and movement joints. Facilities teams, main contractors and managing agents in Newtimber tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Rural conversions near places like Newtimber often set modern frames into older stone, flint or brick. Perimeter mastic there has to grip an uneven face and suit the building’s character.

We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Place
Newtimber (BN6)
Wider area
West Sussex
Guarantee
12 months on every job
Price
Quoted before any work starts
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

When to bring in a specialist

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

For owners and agents in Newtimber

Newtimber is in the South East, one of the UK’s drier regions. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first. Central London is about 41 miles from Newtimber. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres, and window and balcony mastic on them tends to age at the same rate.

Churches, halls and community buildings such as The Parish Church of St John Evangelist are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. For owners of several units at places like Aviation Trading Estate, which lies north-west of Newtimber, one programme can deal with frame and external mastic across the lot. Buildings close to stations like Hassocks station (2.4 miles north-east of Newtimber) are often flats over shops, with frame mastic to keep sound.

Newtimber is about 5 miles south-west of Burgess Hill, in West Sussex. We cover commercial sites throughout Newtimber, for single jobs and planned programmes alike. Across West Sussex, 373 places are covered, Newtimber among them. For work in that direction, see our Brighton page.

We take on mastic joints across the BN6 postcode area, for business premises of every kind. Nearby places we also cover include Clayton (2 miles east), Hurstpierpoint (2 miles north), Hurst Wickham (2 miles north-east), Hassocks (2 miles north-east) and Keymer (3 miles north-east). Bigger towns within reach include Crawley (14 miles north), Horsham (12 miles north-west), Worthing (11 miles south-west), Haywards Heath (8 miles north-east), Burgess Hill (5 miles north-east) and Shoreham-by-Sea (6 miles south-west).

Near you in Newtimber

Newtimber’s nearest station is Hassocks station, about 2.4 miles north-east of the centre. Nearby you’ll also find The Dene Hospital (4.2 miles north) and The Budding Foundation Museum of Gardening (2.1 miles north-east). Open spaces near Newtimber include Woods Mill and Wolstonbury Hill.

Map of Newtimber © OpenStreetMap contributors

From enquiry to sign-off

Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes a day or two for a single block, longer for an estate programme, and our waste is bagged and taken away as we go. For a building around Newtimber, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.

  1. First comes a look at the joints and, for older buildings, the asbestos records.
  2. The products and programme are set out in a fixed quote.
  3. We strip out the old sealant.
  4. The joints are prepared and resealed with the right product.
  5. We finish each building before moving to the next.

What we need from you

  • Explain the parking and delivery arrangements
  • Share the asbestos register for older buildings
  • Send any specification or drawings in advance

Get a fixed quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Get a price

Read more

FAQs: Newtimber

We manage a building near Hassocks station. Can you help?

Yes, we work for agents, landlords and housing associations with blocks of every size. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.

Will you take on work at estates like Aviation Trading Estate, close to Newtimber?

Yes, sites like Aviation Trading Estate are within our area, along with the rest of Newtimber. Photos and a short description are enough for a first look.

Do you work in Newtimber?

Yes. Newtimber is in our area. For a quote, phone 01277 525 020 or email us.

Do you check for asbestos in old sealant?

In older buildings, old mastic can contain asbestos. We ask for the asbestos register or survey before work starts and suspect material is tested first.

How many days will you need on site?

It depends on the scope, though a typical visit typically takes a day or two for a single block, longer for an estate programme. For bigger or phased jobs, we will set out a timescale with the quote.

Can you seal joints high up on a block?

Every block is different. How upper joints are reached is agreed before work is booked so the fixed quote reflects it.

Do you supply RAMS and insurance details?

Let us know your requirements: tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We hold CHAS accreditation and Constructionline membership.

Quoting for work in Newtimber

We price every job individually. The things that drive the figure:

  • Quantities, in metres or numbers
  • The product specified
  • Location, for remote and island sites
  • Removal of failed or old sealant

What a job costs comes down to how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote when you’re ready.

What we need to price the job

Whether it’s one area or a whole building, these details speed things up:

  • Where the site is, with the postcode
  • A wide shot and a close-up of the area
  • Any specification or named product
  • Whether the building will be occupied during the work

For a fixed quote, speak to us on 01277 525 020 or email a schedule or drawings. Our quote form is another easy route.

Why deal with it now?

Sealing over failed mastic looks tidy for a while. It won’t grip the old sealant and soon comes away. Full removal and proper preparation is what lasts. For buildings around smaller places like Newtimber, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.

Why choose Mastic Doctor in Newtimber

  • Matching to RAL references, product permitting
  • 12-month guarantee on workmanship
  • Clear, fixed quotes
  • Old sealant cut out, never sealed over

Read what affects the cost and our accreditations and insurance.

What sealant work can’t fix

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • Glazing that needs replacing
  • Leaks from above rather than through a joint
  • Masonry that has broken away beside the joint

If in doubt, call 01277 525 020 or use the quote form and we will say what we think.

Surfaces we seal

  • Shopfronts below residential blocks
  • Communal entrances and stairwells
  • Communal kitchens and washrooms
  • Balcony and threshold joints
  • Window and door perimeters on blocks
  • External wall and movement joints
Accreditations

Trusted. Accredited. Insured.