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

Mastic sealing for building owners and managing agents in Catisfield, Hampshire

Mastic sealing for Catisfield, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Window mastic that has split and shrunk
  • Water getting in round frames after rain
  • Open joints in brickwork or panels
1
Send details
Tell us about the site, with photos if you have them.
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.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing across Catisfield

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

How we handle mastic sealing in Catisfield

Treatment starts with a proper look: which joints have failed, why, and whether sealant is the right answer. Failed mastic is stripped, the faces taken back to sound material, primed where the manufacturer specifies and resealed and backing rod used wherever a joint is deep. Most enquiries involve estate-wide sealant that is simply worn out and movement joints with sealant missing, across shopfronts below residential blocks, communal kitchens and washrooms and window and door perimeters on blocks. Whoever orders the work in Catisfield, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Older buildings and conversions around places like Catisfield mix old masonry with newer frames. Perimeter joints need a sealant that suits both frame and masonry.

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.

Place
Catisfield (PO15, PO14)
Region
Hampshire
Cover
12 months on our workmanship
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

For owners and agents in Catisfield

The sea is no more than about 2 miles from Catisfield. Sea-facing elevations take driven rain and salt, and their mastic shows it before the sheltered sides do. Catisfield sits in one of the drier corners of the country, the South East. External mastic still waits for dry faces and the right temperature, while the elevations that take the most sun tend to show hardened mastic first.

For agents with blocks near Fareham station (1.3 miles east of Catisfield), a block-wide mastic programme deals with frames, balconies and entrances in one go. Churches, halls and community buildings such as Church of St Peter are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Catisfield is about 1 mile west of Fareham, in Hampshire. Across the PO15 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Catisfield is one of 723 places we cover in Hampshire for mastic joints. For work in that direction, see our Portsmouth page, about 7 miles away.

Postcode districts covered here: PO15 and PO14. Buildings on Mill Lane, Bradly Road and Harcourt Road are within our area for mastic joints. Sites close to Catisfield are covered too, including Heathfield (1 mile east), Titchfield (1 mile west), Titchfield Park (1 mile north-west), Funtley (2 miles north-east) and Little Posbrook (2 miles south-west). Further afield, our area takes in Winchester (15 miles north), Gosport (4 miles south-east), Havant (10 miles east), Eastleigh (10 miles north-west), Horndean (10 miles north-east) and Totton (13 miles west).

Local landmarks in Catisfield

We work on buildings around Fishermans Arms and The Henry Cort Community College, among other places. The nearest railway station is Fareham station, roughly 1.3 miles east of the centre. Nearby you’ll also find Fareham Shopping Centre (1.9 miles east) and Knowle Hospital (2.2 miles north). Green spaces nearby include Holly Hill Woodland Park and Portsdown Hill.

Map of Catisfield © OpenStreetMap contributors

Work for main contractors and building owners

Building owners and managing agents use us on everything from one building to a spread of sites. Several sites can go on one quote, which keeps the paperwork simple.

Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, with each stage agreed with your site contact.

On site: what to expect

Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. What matters most for a job in Catisfield is a clear list of what needs doing. A fixed quote follows.

  1. We inspect each building and record the joints that have failed.
  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. Joints are resealed and tooled.
  6. Each building is checked and signed off with the 12-month guarantee.

What we need from you

  • Tell us which areas need to stay in use
  • Tell us your opening times and when work is allowed
  • Share the asbestos register for older buildings

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, phone 01277 525 020 or email a schedule or drawings.

Get a price

Advice

Catisfield: questions and answers

Does the sea air around Catisfield change the choice of sealant?

It can. Coastal exposure works external joints harder than inland weather. We check the specified product suits the exposure and pay close attention to preparation.

Is Catisfield too small for you to travel to?

No. Small places get the same service as large ones. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Can you take on resealing for a block portfolio?

Yes, block and estate work is a core part of what we do. We work through buildings in a planned order so you can plan around it.

Does weather matter for sealant work?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.

Will you quote for a small job?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

Is mastic sealing guaranteed?

Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.

Is asbestos a concern with old mastic?

Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.

Signs you need mastic sealing in Catisfield

Occasionally the substrate fails, not the sealant for example where render or brick edges crumble. We will tell you if the joint edges need repairing before resealing.

Most enquiries start with something like this:

  • Repeated reactive repairs to the same buildings
  • The same joint failures repeated across a portfolio
  • Damp patches beside frames
  • A mix of products and colours from past repairs

Schools and community buildings such as Ranvilles Infant School need frame and external mastic kept sound like any building.

What to look for in a quote

  • How they’ll work around occupants
  • Health and safety accreditation such as CHAS
  • Whether old or failed sealant will be cut out, not overlaid
  • Do they follow the manufacturer’s priming guidance?

Questions to ask before you appoint anyone

When to bring in a specialist

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

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.

What happens if it’s left?

Looking at mastic during planned maintenance costs little. Waiting until leaks appear means working under pressure and less choice about when. In a smaller place such as Catisfield, getting a contractor back for a second visit takes time, so it’s worth dealing with every failing joint at once.

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.

Why choose Mastic Doctor in Catisfield

  • Work carried out by CSCS-carded applicators
  • Constructionline member
  • Colours chosen to suit frames, cladding or finishes where possible
  • A range of standard colours, depending on the product

See how commercial sealant jobs are priced and our accreditations and insurance.

Looking after the joints

Regular inspection catches problems early. In particular:

  • Reduce knocks to communal area joints
  • Include mastic in your cyclical inspections
  • Avoid piecemeal callouts where you can
  • Look at the sunniest and most exposed elevations first

Where a paintable product was specified, it can be painted after curing. Non-paintable silicone shouldn’t be painted over.

Left open, joint edges in render, brick or frames can deteriorate. Once that happens, repairs come before resealing.

Accreditations

Trusted. Accredited. Insured.