Mastic Sealing in South Mundham
Work needed on a mastic joint in South Mundham? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Repeated reactive repairs to the same buildings
- Old repairs sealed over failed mastic
- Brittle perimeter mastic across a building
Mastic sealing across South Mundham
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Mastic sealing for commercial buildings in South Mundham
Owners and agents usually inherit a building’s mastic rather than choose it, and it ages quietly: window perimeters, door frames, external joints and communal junctions all rely on it. Once it cracks, hardens or comes away, draughts and water find a way in along with complaints. Site teams most often ask us about communal area joints that look neglected and repeated reactive repairs to the same buildings, across external wall and movement joints, communal entrances and stairwells and communal kitchens and washrooms. Looking for mastic applicators who cover South Mundham? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
Rural conversions near places like South Mundham often set modern frames into older stone, flint or brick. The mastic needs to suit an irregular masonry face and the look of the building.
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
- South Mundham (PO20)
- Region
- West Sussex
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Quoting for work in South Mundham
Sealant work doesn’t have a standard rate, because every site is different. What we take into account:
- The product specified
- Travel to remote or island sites
- Phasing around occupants
- Any access equipment needed
Pricing mastic joints depends on quantities, condition and access, plus any specification you’re working to. Call for a quote.
Details that help us quote
Whether it’s one area or a whole building, these details speed things up:
- Whether the building will be occupied during the work
- Drawings or a marked-up plan, if available
- The postcode of the building
- When you need the work done
For a fixed quote, phone 01277 525 020 or send details through our quote form. Our quote form is another easy route.
Towns and villages near South Mundham
Other services in South Mundham
Leave it or put it right?
Leaving failed external joints lets water reach the structure behind. That can lead to damp, staining and damage to finishes and those cost far more to put right. Older rural buildings around South Mundham move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
The specified product makes a difference, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.
What you get with us
- Our applicators hold CSCS cards
- CHAS accredited contractor
- Sealing commercial buildings since 2005
- Public liability insurance in place
Read our cost guide or how we’re accredited.
When to call us in South Mundham
Previous repairs often sealed new mastic over old. New sealant won’t grip failed sealant, so these repairs rarely last.
Site and facilities staff are often the first to spot these:
- A mix of products and colours from past repairs
- Movement joints with sealant missing
- Complaints coming in block by block
- Worn sealant at communal door frames
Trustees of buildings like The Parish Church of St Stephen can bring frame and external mastic into a planned maintenance list.
What your quote should include
- How they handle RAMS and site documents
- Will failed sealant be removed rather than covered?
- Who will actually carry out the work
- Proof of insurance
When something else is needed
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Leaks from above rather than through a joint
- Frames that are rotten, warped or broken
- Substrate edges that need repairing first
Not sure which it is? You can speak to us on 01277 525 020 or email the details over and we will tell you honestly.
What we seal
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Communal entrances and stairwells
- Balcony and threshold joints
- External wall and movement joints
Mastic sealing in South Mundham: the local picture
South Mundham sits close to the coast, within about 2 miles. On buildings near the shore, the side facing the weather usually needs its mastic renewed first, and they deserve more regular inspection. South Mundham is about 56 miles from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres.
Student blocks close to universities like University of Chichester, 2.1 miles to the north-east of South Mundham, are easiest to work on between tenancies. Site managers at schools like North Mundham Primary School can fit frame mastic into the summer works.
South Mundham is about 3 miles south of Chichester, in West Sussex. We send applicators to South Mundham for mastic joints. 373 places across West Sussex fall within our area, South Mundham among them. There’s a separate page for Portsmouth, roughly 14 miles from South Mundham.
Postcode districts covered here: PO20 for mastic joints. If your site is on Manor Lane and Honer Lane or close by, we can quote for mastic joints. Sites close to South Mundham are covered too, including Fisher (1 mile west), Street End (2 miles south-west), Sidlesham Common (2 miles west), Nyetimber (2 miles south-east) and Sidlesham (2 miles south-west). Further afield, our area takes in Bognor Regis (3 miles east), Chichester (3 miles north), Selsey (5 miles south), Littlehampton (10 miles east), Rustington (11 miles east) and Angmering (12 miles east).
Local landmarks in South Mundham
We work on buildings around Chichester High School For Girls and Avisford and the streets around them. For rail, the closest station is Chichester station, roughly 2.5 miles north-west. Other landmarks nearby include Chichester Castle (3 miles north) and Chichester Cathedral Treasury (2.7 miles north-west).
On site: what to expect
Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work typically takes anything from a day to a few weeks, depending on the number of buildings and joints, and we clear our waste as we work. Jobs in and around smaller places like South Mundham are normally planned as a single visit, so photos and measurements up front really help. Then the right materials arrive with us.
- First we look at the mastic on each building and note what needs replacing.
- We send a fixed quote that sets out the joints, the products and the programme.
- The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
Before we start on site
- Let us know about inductions and permits
- Explain the parking and delivery arrangements
- Tell us your opening times and when work is allowed
Ask for a quote
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.
Read more
FAQs: South Mundham
Does the sea air around South Mundham change the choice of sealant?
It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.
Will you take on work at estates like Quarry Lane Industrial Estate, close to South Mundham?
Yes. Our area takes in South Mundham and its surroundings, with estates and business parks such as Quarry Lane Industrial Estate included. To start, just give us a call on 01277 525 020 or use the quote form with the unit, the joints involved and your access times.
Does the weather affect the work?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Internal work is far less affected.
How long before the joints can be used?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.
Can people stay in the building while you reseal?
We plan around people living or working in the building. We agree the programme so you can notify occupiers and communal access is kept open.
How long does a job like this take?
The duration is planned around your programme and the access we are given. You’ll have an expected duration with the quote.
What’s the quickest route to a quote?
You can use the quote form on this site; alternatively, ring 01277 525 020 or use the quote form. Include photos or drawings if you have them.
When to bring in a specialist
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class.