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

Fisher mastic sealing

Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in Fisher and the surrounding area. Send photographs or drawings for a fixed quote.

  • Damaged joints in communal entrances and corridors
  • Movement joints with sealant missing
  • Draught complaints from residents or tenants
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Mastic sealing for businesses in Fisher

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Common questions from Fisher clients

Is a smaller place like Fisher outside your area?

No. Places such as Fisher are covered as much as the big 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.

Does a coastal location like Fisher affect which sealant is used?

It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.

Does the weather affect the work?

For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.

How do you reach windows on upper floors?

It depends on the building. We agree access with you at quote stage so there are no surprises.

Who decides which product is used?

If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Will you just go over the old sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.

Mastic sealing in Fisher

We diagnose before we prescribe: what has failed, what caused it and whether new sealant will actually solve it. Old mastic is removed entirely, the faces prepared, primer used where the maker specifies it and new sealant tooled in, with backing rod setting the depth where it’s needed. Site teams most often ask us about draughts at frames across a block and a mix of products and colours from past repairs, across shopfronts below residential blocks, balcony and threshold joints and external wall and movement joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Fisher, preparation and product choice get the time they need.

In and around smaller places like Fisher, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Frame and wall-joint mastic on all of them ages and hardens.

Our workmanship is guaranteed for 12 months, in Fisher as everywhere else we work. If our installation lets you down in that time, we return and fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Fisher (PO20)
Wider area
West Sussex
Guarantee
12 months on every job
Quotes
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026

Our process

Site rules come first: sign-in, induction and whatever permit system the building uses. Once we are cleared to begin, we take the joints in the sequence agreed with you, and each area is checked before we leave it. Smaller jobs around Fisher can be grouped with others nearby, which keeps travel down. You will have a fixed quote before work starts.

  1. A building-by-building inspection lists the failed joints.
  2. The quote is fixed and split as suits you.
  3. Dates and areas are agreed so occupiers can be told.
  4. Old mastic is removed and the joint faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. Each building is checked and signed off with the 12-month guarantee.

Preparing the site

  • Tell us which areas need to stay in use
  • Have the specification and drawings to hand
  • For older buildings, check the asbestos register before work

Ask for a quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, call the office on 01277 525 020 or email a schedule or drawings.

Get a price

Advice

Quoting for work in Fisher

Your fixed quote is built from the real scope. It allows for:

  • Whether the work must be split into stages
  • Travel to remote or island sites
  • The site’s rules and procedures
  • Any access equipment needed

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.

What to include in your enquiry

Good information means a firmer quote. When you get in touch, include:

  • What the building is and how it’s used
  • Where the site is, with the postcode
  • Your programme or deadline
  • Anything awkward about access or site hours

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.

General trades versus a specialist

Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.

Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Surface by surface

Communal areas

We keep entrances and stairs open throughout. We work in sections so access is never blocked.

Window and door perimeters on blocks

Window and door perimeters are where most mastic failure shows. We remove the failed mastic, prepare the faces, add backing rod if the joint is deep and reseal.

Signs you need mastic sealing in Fisher

We often find joints filled solid with no backing rod, so the mastic is glued to the joint bottom too. That three-sided adhesion stops it stretching and it tears.

Any of the following is a good reason to get the joints checked over:

  • Water getting in round frames after rain
  • Estate-wide sealant that is simply worn out
  • Repeated reactive repairs to the same buildings
  • Patchy repairs in mismatched sealant

If you manage student housing near a university such as University of Chichester, 2.4 miles north-east of Fisher, the summer turnaround is the time for mastic.

What your quote should include

  • How joint depth will be controlled
  • Who will actually carry out the work
  • How the existing material will be dealt with
  • The named product and why it was chosen

Choosing a commercial sealant contractor

For owners and agents in Fisher

Fisher is within about 2 miles of the coast. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first, so it’s worth inspecting those sides more often. The South East is one of the drier parts of the UK. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first.

Churches, halls and community buildings such as St Leodegar's Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. For agents with blocks near Chichester station (2.5 miles north of Fisher), a block-wide mastic programme deals with frames, balconies and entrances in one go.

Fisher is about 3 miles south of Chichester, in West Sussex. We cover Fisher and the rest of West Sussex, with the same fixed quotes and 12-month guarantee as everywhere else. Fisher is one of 373 places in West Sussex on our list. Sites around Portsmouth have their own page, roughly 14 miles from Fisher.

We take on mastic joints across the PO20 postcode area, for business premises of every kind. Nearby places we also cover include South Mundham (1 mile east), Street End (1 mile south-west), Sidlesham Common (1 mile west), Sidlesham (2 miles south-west) and Nyetimber (2 miles south-east). Nearby towns on our patch include Bognor Regis (3 miles east), Chichester (3 miles north), Selsey (5 miles south), Littlehampton (10 miles east), Rustington (11 miles east) and Angmering (13 miles east).

Around Fisher

Fisher’s nearest station is Chichester station, roughly 2.5 miles north. Well-known places in the area include Chichester Cathedral Treasury (2.7 miles north) and Chichester Castle (3 miles north).

Map of Fisher © OpenStreetMap contributors

Why act early in Fisher

Piecemeal repairs over the years often leave mismatched sealant. A block-wide reseal gives one product, one colour and one guarantee. Older rural buildings around Fisher move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.

What you get with us

  • Joints cleaned back to sound surfaces
  • Constructionline member for supplier checks
  • Colours confirmed for the specified product
  • RAL and finish matching where the product range allows

Take a look at how commercial sealant jobs are priced and how we’re accredited.

Accreditations

Trusted. Accredited. Insured.