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

Mastic sealing for building owners and managing agents in Compton, West Sussex

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

  • No planned programme for sealant
  • A mix of products and colours from past repairs
  • Cracked, hardened mastic round windows on a block
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Mastic sealing for businesses in Compton

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

How we handle mastic sealing in Compton

For over 20 years we have resealed joints for owners, agents and landlords. Our applicators are CSCS-carded and we hold public liability insurance. Resealed mastic joints in Compton carry our 12-month guarantee. We work on external wall and movement joints, balcony and threshold joints and shopfronts below residential blocks, and the failures we’re asked to look at most are occupiers reporting cold air round windows and repeated reactive repairs to the same buildings. A specialist sealant contractor works differently from a general builder: on jobs in Compton, preparation and product choice get the time they need.

Around smaller places like Compton, older walls fitted with newer windows are a familiar sight. Perimeter mastic there has to grip an uneven face and suit the building’s character.

The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Compton (PO18)
Wider area
West Sussex
Cover
A 12-month guarantee
Price
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026

When to call us in Compton

Previous repairs often sealed new mastic over old. New sealant won’t grip failed sealant and the repair soon fails.

Things that usually lead to an enquiry:

  • Brittle perimeter mastic across a building
  • Draughts at frames across a block
  • Repeated reactive repairs to the same buildings
  • Movement joints with sealant missing

With historic buildings such as Uppark, 1.8 miles north of Compton, in the wider area, owners of older properties around Compton should expect mastic to need a product that suits old masonry.

Before you book anyone

  • Their plan for phasing and protecting the area
  • How the joint faces will be prepared and primed
  • What the guarantee covers, and for how long
  • How joint depth will be controlled

Questions to ask before you appoint anyone

Mastic sealing around Compton: what changes locally

Compton lies roughly 53 miles out from central London. Within reach of London, blocks run by agents and associations are common around stations. Rainfall across the South East, Compton included, is lower than in many parts of the UK. External mastic still waits for dry faces and the right temperature, and the sunniest, most exposed sides of a building normally need attention first.

For a school such as Compton and Up Marden CofE Primary School, perimeter mastic on windows and doors is a holiday job. If you’re responsible for a building such as The Parish Church of St Mary, frame and door mastic needs the same attention as any other property.

Compton is about 5 miles east of Horndean, in West Sussex. Anywhere in PO18, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Compton is one of 373 places in West Sussex on our list. Our Portsmouth page has more on work in that area.

Work on mastic joints is covered throughout PO18, for business premises of every kind. Buildings on Church Lane and School Lane are within our area for mastic joints. Nearby places we also cover include East Marden (2 miles east), South Harting (3 miles north), East Harting (3 miles north-east), Chilgrove (4 miles east) and Elsted (4 miles north-east) for mastic joints. Further afield, our area takes in Bognor Regis (13 miles south-east), Chichester (8 miles south-east), Selsey (14 miles south), Portfield (9 miles south-east), Yapton (15 miles south-east) and East Wittering (11 miles south).

What’s near Compton

Locally, jobs take us to sites close to The Coach And Horses Public House and the streets around them. Compton’s nearest station is Rowlands Castle station, roughly 3.6 miles south-west of the centre. Well-known places in the area include Petersfield Community Hospital (5.7 miles north) and Clanfield Earthwork (4 miles west). The countryside around Compton includes Kingley Vale National Nature Reserve and Compton Down.

Map of Compton © OpenStreetMap contributors

Our process

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before the next one starts. Smaller jobs around Compton can be grouped with others nearby. A fixed quote is given before anything starts.

  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. Dates, areas and access are agreed so residents or tenants can be told in advance.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
  6. Finished joints are looked over and the 12-month guarantee confirmed.

Before we start on site

  • Point out any areas we must not close
  • Share the asbestos register for older buildings
  • Let building users know which areas are affected

Getting a fixed quote

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

Get a price

Advice

Questions we are asked in Compton

Can you quote for mastic across several buildings in and around Compton?

Yes, we quote for single buildings and for programmes across several blocks. Send the addresses and photos and we’ll give a fixed quote.

Can you quote for a block close to Rowlands Castle station?

Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Give us the building’s details and say how residents are notified, and we will quote and plan to suit.

How long do sealant joints last?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

Will residents or tenants be disturbed?

Residents and tenants carry on as normal. If any flats or units need access, we will tell you in advance so it can be arranged.

How do you reach windows on upper floors?

It depends on the building. We agree access with you at quote stage so the fixed quote reflects it.

Do you work in Compton?

Yes. Sites across Compton are covered, with one number for every area we cover.

Do you seal on top of existing sealant?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

When to bring in a specialist

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

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. For that reason, many FMs and contractors use a sealant specialist from the outset.

How the quote is worked out

Each job is priced on its own details. The main factors are:

  • Quantities, in metres or numbers
  • Removal of failed or old sealant
  • Location, for remote and island sites
  • Induction, permit and paperwork requirements

The specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.

Sending details for a quote

For an accurate fixed quote, we need to understand the site. Useful things to include:

  • The product your specification calls for
  • When you need the work done
  • Drawings or a marked-up plan, if available
  • Anything awkward about access or site hours

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, phone 01277 525 020 or email drawings and photos.

Commercial clients in Compton

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

Honest limits

Part of a good diagnosis is knowing where sealant stops. You will hear from us if the cause turns out to be one of these:

  • Roof leaks, gutters or failed flashings that aren’t sealant joints
  • Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
  • Broken glass or failed sealed units

Not sure which it is? You can call 01277 525 020 or email a schedule or drawings and we will tell you honestly before you book.

Surfaces we seal

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

Trusted. Accredited. Insured.