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

Mastic sealant contractors in Mid Lavant

Work needed on a mastic joint in Mid Lavant? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Communal area joints that look neglected
  • Draught complaints from residents or tenants
  • Patchy repairs in mismatched sealant
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Mastic sealing for Mid Lavant 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 Mid Lavant

For blocks and buildings in Mid Lavant and across West Sussex, the process is the same: you send details, we return a fixed quote, the joints are resealed and the 12-month guarantee follows. A list of buildings, a few photographs and approximate joint numbers are enough for a quick quote, and site visits can be arranged. We work on shopfronts below residential blocks, external wall and movement joints and balcony and threshold joints, and the usual reasons a site gets in touch are estate-wide sealant that is simply worn out and water getting in round frames after rain. Most enquiries from Mid Lavant 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.

For buildings around smaller places like Mid Lavant, we group work so one trip covers it. Send photographs of the frames and joints and we will give a fixed quote.

Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Mid Lavant (PO18)
Wider area
West Sussex
Cover
A 12-month guarantee
Quotes
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026

When to call us in Mid Lavant

We often find joints filled solid with no backing rod so the mastic is bonded on three sides. That three-sided adhesion stops it stretching and splits as the building moves.

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

  • Occupiers reporting cold air round windows
  • The same joint failures repeated across a portfolio
  • Open joints in brickwork or panels
  • Water getting in round frames after rain

If you are responsible for a building such as Church of St Nicholas, frame and door mastic needs the same attention as any other property.

Before you book anyone

  • Can the work be phased to keep areas open?
  • Their approach to joint depth and backing
  • Who will actually carry out the work
  • Health and safety accreditation such as CHAS

Questions to ask before you appoint anyone

How the quote is worked out

Sealant work doesn’t have a standard rate, because every site is different. What we take into account:

  • Whether old sealant has to be cut out first
  • Phasing around occupants
  • Any access equipment needed
  • Specialist products, such as fire-rated or hygienic sealants

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Details that help us quote

However big the job, these details speed things up:

  • A wide shot and a close-up of the area
  • Drawings or a marked-up plan, if available
  • The site address and postcode
  • Whether the building will be occupied during the work

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

FAQs: Mid Lavant

Is Mid Lavant off your patch?

No. Places such as Mid Lavant are covered as much as the big towns. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

Do you work for managing agents with blocks near Fishbourne station?

Yes. Blocks of any size are within what we do. Send the address, photographs of the elevations and your access arrangements, and we will give a fixed quote.

How long will the new sealant last?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

Can people stay in the building while you reseal?

The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told, and entrances stay in use.

Can you seal joints high up on a block?

It depends on the building. How upper joints are reached is agreed before work is booked so there are no surprises.

Can you work to our specification?

Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.

What sealant work can’t fix

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • Broken glass or failed sealed units
  • Materials that need asbestos testing before work
  • Frames that are rotten, warped or broken

If you are not sure, just phone 01277 525 020 or use the quote form and we will give you a straight answer before you book.

Surfaces we seal

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

How the job changes by surface

External movement joints

Failed sealant is removed, backing rod inserted to control depth and the joint resealed with a grade whose movement class fits.

Tenement and older buildings

Some old mastics in pre-2000 buildings contain asbestos, so we check the asbestos register or survey first. Suspect material is tested before work continues.

When to bring in a specialist

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Blocks and managed buildings in Mid Lavant

Mid Lavant is in the South East, one of the UK’s drier regions. Outside work still depends on dry joints, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first. Mid Lavant is about 53 miles from central London. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres, and window and balcony mastic on them tends to age at the same rate.

Owners of student blocks near University of Chichester (to the south of Mid Lavant) can schedule frame and external mastic for the summer vacation. Schools and community buildings such as Lavant CofE Primary School need frame and external mastic kept sound like any building.

Mid Lavant is about 2 miles north of Chichester, in West Sussex. Any commercial site in Mid Lavant is covered, for single jobs and planned programmes alike. Mid Lavant is one of 373 places in West Sussex on our list for mastic joints. We also cover Portsmouth, some 14 miles away.

We take on mastic joints across the PO18 postcode area, whatever the building. Buildings on St Nicholas Road, Churchmead Close and Springfield Close are within our area for mastic joints. Close to Mid Lavant, our area also takes in East Lavant (1 mile south-east), Westerton (2 miles south-east), Westhampnett (2 miles south-east), Chichester (2 miles south) and Waterbeach (2 miles east). Nearby towns on our patch include Bognor Regis (7 miles south-east), Selsey (10 miles south), Littlehampton (12 miles east), Rustington (13 miles east), Storrington (15 miles east) and Angmering (14 miles east).

What’s near Mid Lavant

We work on buildings around The Earl Of March Public House and Bishop Luffa School and the streets around them. The nearest railway station is Fishbourne station, roughly 2.7 miles south-west. A little further out are Chichester Castle (2.3 miles south) and Museum of Gardening (2.4 miles north). Not far away are Kingley Vale National Nature Reserve and Stoke Down.

Map of Mid Lavant © OpenStreetMap contributors

How a job runs

Tell us your site hours and access windows and we’ll plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For work around Mid Lavant, we aim to finish in one visit, so we ask for photos and rough sizes first. That way the right products come on the day.

  1. Each block or building is walked and the failed joints recorded with the likely cause.
  2. A fixed quote follows, split by block or building if that suits you.
  3. The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
  6. Finished joints are looked over and the 12-month guarantee confirmed.

Getting the site ready

  • Share your working hours and any access restrictions
  • Arrange parking or a loading space
  • Make sure the joints can be reached

Ask for a quote

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 will fill any gaps with a visit.

Ask for a quote

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