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

Facade Sealing in Marehill

Facade joint and window perimeter sealing on commercial buildings in Marehill. CHAS accredited and fully insured, with a 12-month guarantee.

  • Hard, chalky sealant that no longer flexes
  • Water coming in around window frames
  • Failed sealant on precast panel joints
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
Fully insured: £5m PL

Facade sealing near Marehill

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

Why it’s worth doing now in Marehill

The longer a failed joint is left, the more the substrate suffers: wet edges break down, so repairs may be needed before resealing. Early action keeps it simple. For buildings around smaller places like Marehill, 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. Renewing joints in good time avoids the problem.

The price depends on how many linear metres there are, what has to come out first and how the joints are reached. Call for a quote once you have the details.

Why choose Mastic Doctor in Marehill

  • Work to your specification and the manufacturer’s guidance
  • Sealing commercial buildings since 2005
  • Fully insured
  • A Constructionline member, so easy to vet

Take a look at our cost guide or our accreditations and insurance.

Facade sealing for commercial buildings in Marehill

Water ingress at window frames is a frequent reason facilities managers contact us. Failed perimeter sealant is a frequent cause. If the evidence points away from the sealant, we say so before quoting. If you’re dealing with failed seals around shopfront and entrance frames and cladding panel joints that have opened up, we can help. Most enquiries from Marehill start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.

Construction in and around smaller places such as Marehill is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

A 12-month guarantee applies to all our work. Should something we installed fail, phone 01277 525 020 or email the details over and we will come back to it.

Location
Marehill (RH20)
Wider area
West Sussex
Guarantee
A 12-month guarantee
Price
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Surface by surface

Perimeter joints at frames and structure

Where framed systems such as shopfronts meet the building structure, there is a perimeter joint to seal. Our work is that perimeter joint, not the framing or glazing itself.

Window and door perimeters

Frame-to-wall joints at windows and doors are the facade joints we reseal most. A low-modulus neutral-cure product, chosen for the frame and wall, goes in finished to throw water off the joint.

When to bring in a specialist

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Questions about Marehill

Is a smaller place like Marehill outside your area?

Not at all: smaller places are covered as well as towns. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.

Is Station Approach Industrial Estate, near Marehill, within your area?

Yes. We cover Marehill and the area around it, including industrial estates, business parks and retail parks such as Station Approach Industrial Estate. Send details of the unit and the work through our quote form for a quick quote.

Can staff carry on working while you are here?

In the majority of cases, yes. Phased work can be planned so areas stay in use.

Do we need an asbestos check before resealing?

For older buildings, yes, check before work starts. The dutyholder holds the asbestos register, so ask for it before we start. Suspect material is left alone until it has been tested.

Do you seal facades in winter?

Rain and frost can pause external sealing. We plan for weather and keep you updated.

Can you find out why a window is leaking?

Yes. We look at the perimeter sealant and tell you whether it has failed as part of pricing. Where the cause seems to be elsewhere, we’d rather tell you than reseal pointlessly.

Are you CHAS accredited and on Constructionline?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

From enquiry to sign-off

At the end of each section, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. Rural sites near Marehill may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. The existing bead comes out in full and the joint faces cleaned.
  4. Primer is applied where the maker specifies it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. The finished joints are checked with you.

What we need from you

  • Share your working hours and any access restrictions
  • Send asbestos survey details if the building is pre-2000
  • Arrange parking or a loading space

Quotes

For a fixed quote, give us a call on 01277 525 020 or email drawings and photos. You can also send details through our quote form.

Get a price

Advice

After the work

A few simple habits keep the new joints working:

  • Don’t wait for a second leak before calling
  • Avoid harsh cleaners on facade sealant
  • Avoid patch repairs on failed facade joints
  • Inspect facade joints on a regular cycle

Keep a note of which product went in and when. Future work can then match the product and colour.

Check older buildings for asbestos before disturbing old mastic. Some older mastics contain it, and work stops until it’s tested if it’s suspected.

Building and refurbishing in Marehill

Marehill is in the South East, one of the UK’s drier regions. Even so, frost and condensation on steel and glass are common on winter mornings, so we time external mastic for dry faces and agree it with the site team. Marehill is about 41 miles from central London. Towns within reach of London tend to keep building, from flats to offices and schools, which keeps mastic packages in demand.

For contractors refurbishing units at places like Station Approach Industrial Estate, 1.5 miles to the west of Marehill, the mastic covers cladding panels, roller-door and window perimeters. For contractors at a school such as St Mary's Church of England Primary School, sealing has to be finished before term starts.

Marehill is about 10 miles north of Worthing, in West Sussex. Anywhere in RH20, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. 373 places across West Sussex fall within our area, including Marehill. Sites around Brighton have their own page, roughly 17 miles from Marehill.

Work on facade joints is covered throughout RH20. We cover commercial and managed buildings on West Chiltington Road, Tudor Close and Kings Lane and the roads nearby. If your building is just outside Marehill, we cover Nutbourne (1 mile north-east), Broomershill (1 mile north-west), Wiggonholt (1 mile south), West Chiltington Common (1 mile south-east) and West Chiltington (1 mile east). A short drive away, we cover Horsham (10 miles north-east), Worthing (10 miles south), Bognor Regis (14 miles south-west), Chichester (15 miles south-west), Burgess Hill (15 miles east) and Littlehampton (10 miles south).

Around Marehill

We work on buildings around The Rising Sun Inn and the streets around them. For rail, the closest station is Pulborough station, roughly 1.6 miles west of the centre. Other landmarks nearby include Amberley Castle (4 miles south-west) and The Storrington And District Museum (2.9 miles south-east). Green spaces nearby include Amberley Wildbrooks RSPB Reserve.

Map of Marehill © OpenStreetMap contributors

Signs you need facade sealing in Marehill

Three-sided adhesion is a classic installation fault. With no backing, the sealant is restrained.

These are often picked up first by site or facilities staff:

  • Patch repairs that keep failing
  • Old perimeter mastic that has dried out
  • Gaps between rainscreen or cladding panels
  • Discoloured or dirty facade joints

Older buildings in the area around Marehill, such as Old Place Manor, 1.4 miles to the west of Marehill, need care when sealed: the product has to suit soft or historic materials.

Before you book anyone

  • Their plan for phasing and protecting the area
  • Will RAMS and insurance details be available?
  • What level of public liability insurance do they hold?
  • How joint depth will be controlled

Questions to ask before you appoint anyone

Accreditations

Trusted. Accredited. Insured.