Mastic sealing for building owners and managing agents in North Mundham, West Sussex
Mastic sealing for North Mundham, from a contractor working since 2005. Fully insured and CHAS accredited.
- Patchy repairs in mismatched sealant
- Cracked, hardened mastic round windows on a block
- Water getting in round frames after rain
Mastic sealing for North Mundham sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
North Mundham: questions and answers
Does a coastal location like North Mundham 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. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.
Is a smaller place like North Mundham outside your area?
No. Small places get the same service as large ones. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.
Can weather delay the job?
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.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
What will the job cost?
Each job is quoted on its own details. To get one, call 01277 525 020 or use the quote form with a description of the work.
Can you follow the specification on our project?
Yes. Send it with your enquiry, and we will price the work to it, flagging anything that needs clarifying.
What if the old mastic contains asbestos?
In older buildings, old mastic can contain asbestos. We check the asbestos register or survey before disturbing it and suspect material is tested first.
About our mastic sealing in North Mundham
Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out and if it’s suspected, work stops until it’s tested. Removing asbestos-containing material isn’t something we do. We work on balcony and threshold joints, shopfronts below residential blocks and communal kitchens and washrooms, and the usual reasons a site gets in touch are movement joints with sealant missing and mastic failing across several blocks on an estate. A single leaking joint is often how a building in North Mundham first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.
In and around smaller places like North Mundham, 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.
Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Location
- North Mundham (PO20)
- Region
- West Sussex
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
What the job involves on each surface
Communal areas
Entrance doors, screens and corridor junctions in communal areas all have sealant joints. Fresh joints make shared areas look looked after.
External movement joints
Joint size and product are matched to the expected movement with the width-to-depth ratio set as the manufacturer advises.
Site staff or a sealant 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. Getting these wrong normally costs more in the end than doing them right.
Redoing a failed joint normally costs more than getting it right at the outset, 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.
Blocks and managed buildings in North Mundham
North Mundham sits close to the coast, within about 3 miles. On buildings near the shore, the side facing the weather usually needs its mastic renewed first, so it’s worth inspecting those sides more often. At about 55 miles from central London, North Mundham is within reach of the capital. Within reach of London, blocks run by agents and associations are common around stations, and window and balcony mastic on them tends to age at the same rate.
If you manage student housing near a university such as University of Chichester, 1.8 miles to the east of North Mundham, the summer turnaround is the time for mastic. If you look after a block within reach of Chichester station, 1.6 miles to the north-west of North Mundham, frame and balcony mastic can be renewed on one programme.
North Mundham is about 2 miles south-east of Chichester, in West Sussex. Any commercial site in North Mundham is covered. Across West Sussex, 373 places are covered, North Mundham among them. For work in that direction, see our Portsmouth page (14 miles or so).
We cover the PO20 postcode districts for mastic joints. Among the streets we cover are Church Road, Fletcher Place and Palmer Place, and sites on any of them can send details for a fixed quote. If your building is just outside North Mundham, we cover Runcton (1 mile east), Hunston (1 mile west), Merston (1 mile east), Donnington (1 mile west) and Lagness (2 miles south-east). A short drive away, we cover Bognor Regis (4 miles south-east), Selsey (6 miles south), Littlehampton (10 miles east), Rustington (11 miles east), Storrington (15 miles north-east) and Angmering (12 miles east).
What’s near North Mundham
We work on buildings around The Spotted Cow Public House and Chichester High School For Girls. The closest station to North Mundham is Chichester station, about 1.6 miles north-west of the centre. A little further out are St Richard's Hospital (2.1 miles north) and Chichester Cathedral Treasury (1.8 miles north-west).
Cost factors for mastic joints
Your fixed quote is built from the real scope. It takes account of:
- Which sealant the job calls for
- Whether the work must be split into stages
- Whether old sealant has to be cut out first
- Any access equipment needed
There’s no price list, because the scope varies so much from one building to the next. Call for a quote and we’ll price your job on its own details.
What to include in your enquiry
Whether it’s one area or a whole building, the same details help:
- Specification clauses that apply
- The site address and postcode
- Drawings or a marked-up plan, if available
- Any dates the work must fit around
For a fixed quote, ring 01277 525 020 or email drawings and photos with the site address and an outline of the work. You can also send details through our quote form.
Common problems we fix in North Mundham
Sunlight and weather break mastic down over time. It stiffens, stops stretching and cracks most of all on the sunniest and most exposed elevations.
Look out for the following:
- The same joint failures repeated across a portfolio
- Movement joints with sealant missing
- Occupiers reporting cold air round windows
- Old repairs sealed over failed mastic
If you own or manage units on a site such as Quarry Lane Industrial Estate, 1.2 miles north of North Mundham, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
What to look for in a quote
- Is the sealant right for the movement and the substrate?
- Do they follow the manufacturer’s priming guidance?
- Their approach to joint depth and backing
- The terms of the workmanship guarantee
Towns and villages near North Mundham
What else we do in North Mundham
Keeping the joints sound
For the best life from the joints:
- Include mastic in your cyclical inspections
- Keep bins and bikes away from communal door frames
- Share the asbestos register when you send details
- Log resealing dates block by block
If a joint we sealed fails within 12 months, tell us and we will look at it. Beyond that, routine checks spot the next round of repairs.
Joints on a building age together so a single failure is a sign to check the rest. A planned reseal saves repeated visits.
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 we finish with a walk round so the work can be signed off. Rural sites near North Mundham may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- We finish each building before moving to the next.
Preparing the site
- Let us know about inductions and permits
- Arrange parking or a loading space
- For older buildings, check the asbestos register before work
Request a quote
Every quote starts with the facts: 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.