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

Mastic Sealing in Marehill

Mastic sealing for building owners, managing agents and housing associations in Marehill. CHAS accredited and fully insured, with a 12-month guarantee.

  • Open joints in brickwork or panels
  • Complaints coming in block by block
  • Window mastic that has split and shrunk
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
Constructionline member
£5m PL insurance

Mastic sealing for Marehill sites

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Mastic sealing for commercial buildings in Marehill

Our clients include managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios. A planned, building-by-building programme often works better than reacting to each complaint and we quote and schedule each building in turn. The enquiries we see most involve no planned programme for sealant and damp patches beside frames, across communal kitchens and washrooms, window and door perimeters on blocks and balcony and threshold joints. Whether you call it commercial sealant work, mastic application or joint sealing, in Marehill it comes down to the same thing: the right product in a properly prepared joint.

Owners and agents with buildings around smaller places such as Marehill tend to manage small terraces of association properties, converted barns and commercial units. Mastic around frames and on external joints wears out in time, whatever the building.

We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.

Place
Marehill (RH20)
Region
West Sussex
Cover
12 months on every job
Quote
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

Owners, agents and contractors

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Marehill can sit alongside others in a wider programme.

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

Why act early in Marehill

Looking at mastic during planned maintenance costs little. Leaving it until there’s a leak turns it into reactive work and less choice about when. Around Marehill, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

Why appoint us

  • A range of standard colours, depending on the product
  • Colours confirmed for the specified product
  • A Constructionline member, so easy to vet
  • Specification-led, product-correct work

Take a look at what affects the cost and our accreditations.

Block-wide mastic in Marehill

Marehill is in the South East, one of the UK’s drier regions. Even so, frame mastic only goes on in dry, workable conditions, and south- and west-facing elevations, which take the most sun and rain, often age first. At about 41 miles from central London, Marehill is within reach of the capital. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres, and window and balcony mastic on them tends to age at the same rate.

Schools and community buildings such as St Mary's Church of England Primary School need frame and external mastic kept sound like any building. If you look after a block within reach of Pulborough station (1.6 miles west of Marehill), frame and balcony mastic can be renewed on one programme. Churches, halls and community buildings such as Wiggonholt Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Marehill is about 10 miles north of Worthing, in West Sussex. Across the RH20 postcode area, 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, Marehill among them. There’s a separate page for Brighton, roughly 17 miles from Marehill.

Business premises anywhere in RH20 are within our area for mastic joints. We cover commercial and managed buildings on West Chiltington Road, Tudor Close and Kings Lane and the roads nearby. We also 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) for mastic joints. Nearby towns on our patch include 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

Recent enquiries here include premises near The Rising Sun Inn and the streets around them. For rail, the closest station is Pulborough station, roughly 1.6 miles west. Other landmarks nearby include Amberley Castle (4 miles south-west) and The Storrington And District Museum (2.9 miles south-east). For a walk, there’s Amberley Wildbrooks RSPB Reserve.

Map of Marehill © OpenStreetMap contributors

After the work

To get the most from the new sealant:

  • Plan resealing building by building rather than complaint by complaint
  • Encourage occupiers to report problems at frames
  • Mention RAMS, insurance or CSCS requirements up front
  • Keep a record of when each building was resealed

Ask residents or tenants to report draughts or leaks round windows early. A quick report keeps a small repair small.

Water getting in round frames can damage plaster, decoration and the frames themselves. Early resealing is far simpler than repairs inside.

What affects the price in Marehill

To price the job, we consider:

  • Whether old sealant has to be cut out first
  • Travel to remote or island sites
  • The size and state of each joint
  • How accessible the joints are

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

Before you send an enquiry

Whether it’s one area or a whole building, the same details help:

  • When you need the work done
  • Asbestos survey details if the building is older
  • Access details, including height
  • The type of building and who uses it

To get a fixed quote, phone 01277 525 020 or email a schedule or drawings, telling us the site location and the nature of the job. Our quote form is another easy route.

Questions about Marehill

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

Yes, and several blocks can go on one quote. Send the address, photos of the elevations and your access arrangements, and we’ll give a fixed quote.

Is Marehill too far out for you?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. Good photographs up front let us bring everything on the first visit.

Do you do block-wide mastic programmes?

Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.

When is resealing likely to be due?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.

Does weather matter for sealant work?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.

How long does a job like this take?

It depends on the scope, though a typical visit normally takes one or more days per building, depending on the joint lengths and the access. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

How do you choose the sealant?

The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

Diagnose, treat, sign off

Tell us your site hours and access windows and we’ll plan around them. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Rural sites near Marehill may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.

  1. First we look at the mastic on each building and note what needs replacing.
  2. We send a fixed quote that sets out the joints, the products and the programme.
  3. The programme is fixed with you, including dates you can pass on to residents or tenants.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Getting the site ready

  • For older buildings, check the asbestos register before work
  • Confirm the product named in the specification
  • Move anything stored against the joints

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, ring 01277 525 020 or send details through our quote form.

Ask for a quote

Related advice

When something else is needed

We check first that sealant really is the fix. It won’t put right:

  • Leaks through the frame itself rather than the perimeter
  • Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
  • Broken glass or failed sealed units

If in doubt, speak to us on 01277 525 020 or email a schedule or drawings and we’ll say what we think before you book.

What we seal

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

Trusted. Accredited. Insured.