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

Construction and new-build mastic in Saint Hill Green, West Sussex

We carry out mastic packages for new-build and refurbishment projects in Saint Hill Green. Send details for a fixed quote.

  • Different trades sealing to different standards
  • Caulk cracking where joints are moving more than expected
  • Failed sealant in an existing building being refurbished
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Construction mastic for businesses in Saint Hill Green

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Construction mastic for commercial buildings in Saint Hill Green

Since 2005 we have worked alongside main contractors, developers and fit-out firms. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. For construction mastic on a scheme in Saint Hill Green, send drawings through our quote form, or phone or email us to talk it through. We work on sanitary and kitchen joints, cladding and panel joints and floor and skirting junctions, and the failures we are asked to look at most are caulk cracking where joints are moving more than expected and frame gaps too wide for sealant alone. Most enquiries from Saint Hill Green start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

In the countryside around places like Saint Hill Green, conversion schemes put new frames into old stone, flint, brick or timber. A product that grips an irregular face, with a colour that suits the building’s character, is usually what’s needed.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Saint Hill Green (RH19)
Region
West Sussex
Guarantee
12 months on every job
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026

On site: what to expect

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. For a building around Saint Hill Green, 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. We walk the site or review drawings to understand the package.
  2. You receive a fixed quote covering scope, products and sequence.
  3. Site paperwork is confirmed and our CSCS-carded applicators are inducted.
  4. We seal plot by plot or floor by floor in line with the programme.
  5. Problems we find, such as oversized gaps, are raised right away.
  6. Final snagging is completed and the 12-month guarantee applies.

What we need from you

  • Arrange parking or a loading space
  • For older buildings, check the asbestos register before work
  • Tell us what induction or permit system the site runs

Get a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, call 01277 525 020 or use the quote form.

Get a quick quote

Related advice

New build and refits around Saint Hill Green

Saint Hill Green has a number of hotels close by, all within 2 miles. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Saint Hill Green lies roughly 27 miles out from central London. Towns within reach of London tend to keep building, from flats to offices and schools, so mastic packages have to keep pace with busy programmes.

When a school such as The Meads Primary School is extended or refurbished, the mastic package is often squeezed into the holidays. Historic houses such as Saint Hill Manor (0.1 miles north-west of Saint Hill Green) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.

Saint Hill Green is about 2 miles south of East Grinstead, in West Sussex. Across the RH19 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Across West Sussex, 373 places are covered, Saint Hill Green among them. Sites around Brighton have their own page, about 19 miles away.

Commercial sites across RH19 are covered for mastic packages. Streets here include Saint Hill Road and West Hoathly Road, and sites on any of them can send details for a fixed quote. Just outside Saint Hill Green, we also work in East Grinstead (2 miles north), Ashurst Wood (2 miles east), Crawley Down (3 miles north-west), Turners Hill (3 miles west) and Felbridge (3 miles north-west). Nearby towns on our patch include Crawley (7 miles west), Horsham (13 miles west), Haywards Heath (8 miles south-west), Burgess Hill (11 miles south-west), Broadfield (8 miles west) and Bewbush (8 miles west).

Around Saint Hill Green

In Saint Hill Green, that means premises near Sackville School. For rail, the closest station is East Grinstead station, about 1.5 miles north. Other landmarks nearby include Queen Victoria Hospital (2.4 miles north-east) and East Grinstead Museum (1.6 miles north-east). The countryside around Saint Hill Green includes Hedgecourt Lake.

Map of Saint Hill Green © OpenStreetMap contributors

Why it’s worth doing now in Saint Hill Green

A quick bead over a damaged joint can get an area past inspection, but it won’t last. Sealant can’t grip a contaminated or existing bead. Damaged joints are removed and resealed from clean faces. One visit to deal with every failing joint makes more sense than several trips to a place like Saint Hill Green, rather than one at a time. Photos of every joint help us quote for the whole job.

Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.

Why choose Mastic Doctor in Saint Hill Green

  • Public liability insurance in place
  • Coloured sealants to suit the setting, where available
  • Old sealant cut out, never sealed over
  • Health and safety: CHAS accredited

See how commercial sealant jobs are priced and our accreditations.

Your questions answered

Is Saint Hill Farm Business Park, near Saint Hill Green, within your area?

Yes. We cover Saint Hill Green and the area around it, including industrial estates, business parks and retail parks such as Saint Hill Farm Business Park. Send details of the unit and the work through our quote form for a quick quote.

Is Saint Hill Green too small for you to travel to?

No. Small places get the same service as large ones. Our area covers London and the South East counties. Good photos up front let us bring everything on the first visit.

Are you CHAS accredited?

Our applicators hold CSCS cards, and we’re CHAS accredited and a Constructionline member. Public liability insurance of five million pounds is in place too.

What guarantee comes with a mastic package?

Our workmanship carries a 12-month guarantee from sign-off. The guarantee covers our work, not later damage by other trades.

How do you work with the site programme?

We seal plot by plot or floor by floor as areas are released. The sequence is settled with your site team.

Do you take on multi-site work?

Yes. Multi-site work and planned programmes are a core part of the service, planned site by site to suit how each building is used.

What if there’s asbestos in the old mastic?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.

Different surfaces, different methods

Fire-rated sealant where specified

Not every penetration suits a sealant. Collars, wraps, batts and boards are specified for other services so we’ll flag where the detail needs something different. Tell us what records you need and we’ll confirm with the quote.

Window and door perimeters

Internal perimeters are normally sealed with a paintable product where decorating follows. We follow what’s specified.

Looking after the joints

To get the most from the new sealant:

  • Note which sealant went where at handover
  • Flag uneven or tapered frame gaps early
  • Protect sealed areas from following trades
  • Plan external elevations with the weather in mind

At handover, keep the product details with the O&M information. Future maintenance is easier when the products are known and avoids guesswork when joints are renewed. Tell us what records you need and we will confirm with the quote.

Oversized gaps are a problem better caught early. Sealant stretched over an oversized gap won’t last, so the installer needs to correct it first. We raise them during our first walk of the area.

When to call us in Saint Hill Green

Swapping the specified sealant for a cheaper general-purpose product is a common cause of failure. A general-purpose silicone on a facade or a caulk in a wet area won’t perform like the specified product. We stick to the specified product, or put any alternative to you first.

Clients usually get in touch after noticing one or more of the following:

  • New external sealant already peeling away
  • Failed sealant in an existing building being refurbished
  • Mastic snags holding up handover
  • Missed perimeter joints on a new elevation

On a healthcare site such as Queen Victoria Hospital, 2.3 miles north-east of Saint Hill Green, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

Comparing quotes

  • How the joint faces will be prepared and primed
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How long is the guarantee, and what does it include?
  • The named product and why it was chosen

Our contractor checklist

When it isn’t the sealant

We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:

  • Approving fire stopping as compliant
  • Specifying the product where the designer hasn’t
  • Rework caused by others damaging completed areas

If in doubt, give us a call on 01277 525 020 or use the quote form and we will say what we think before you book.

Surfaces we seal

  • Floor and skirting junctions
  • Cladding and panel joints
  • Sanitary and kitchen joints
  • Brick and block movement joints
  • Internal decorators’ caulk
  • Window and door perimeters
Accreditations

Trusted. Accredited. Insured.