Mastic contractors in North Mundham
Looking for construction mastic in North Mundham? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Oversized or tapered gaps around new frames
- Mastic snags holding up handover
- Inconsistent sealant finishes from plot to plot
Construction mastic for North Mundham sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
About our construction mastic in North Mundham
On refurbishments, the mastic package usually includes cutting out old sealant as well as sealing new work. Old beads come out completely, as fresh silicone can’t grip old. New and existing joints then get the same preparation. We work on floor and skirting junctions, cladding and panel joints and sanitary and kitchen joints, and the failures we’re asked to look at most are sealant knocked or painted over by other trades and mastic snags holding up handover. Most enquiries from North Mundham start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
In the countryside around places like North Mundham, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.
Our workmanship is guaranteed for 12 months, in North Mundham as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- North Mundham (PO20)
- Wider area
- West Sussex
- Cover
- 12 months on every job
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Contractors’ notes for North Mundham
North Mundham sits close to the coast, within about 3 miles. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. The area within 2 miles of North Mundham holds several hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
For contractors on a campus like University of Chichester, 1.8 miles east of North Mundham, facade and perimeter sealing has to fit around students and term dates. Recladding or extending a unit at a site like Quarry Lane Industrial Estate, 1.2 miles north of North Mundham, brings panel joints and frame perimeters into the programme.
North Mundham is about 2 miles south-east of Chichester, in West Sussex. North Mundham sits inside our coverage and the rest of West Sussex, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our West Sussex coverage takes in 373 places, large and small. For work in that direction, see our Portsmouth page (14 miles or so).
If you need construction mastic in PO20, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Church Road, Fletcher Place and Palmer Place or close by, we can quote for mastic packages. Just outside North Mundham, we also work in Runcton (1 mile east), Hunston (1 mile west), Merston (1 mile east), Donnington (1 mile west) and Lagness (2 miles south-east). Nearby towns on our patch include 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).
Local landmarks in North Mundham
In North Mundham, that means premises near The Spotted Cow Public House and Chichester High School For Girls and the streets around them. The closest station to North Mundham is Chichester station, about 1.6 miles north-west. Other landmarks nearby include St Richard's Hospital (2.1 miles north) and Chichester Cathedral Treasury (1.8 miles north-west).
Should maintenance staff do it?
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. That’s why many clients bring in a specialist from the beginning.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Your questions answered
Can being near the sea in North Mundham affect the sealant we need?
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 North Mundham off your patch?
No. Places such as North Mundham are covered as much as the big towns. We cover Greater London and the counties of the South East. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.
How long does a typical visit take?
That varies with the scale of the job, though a typical visit usually takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. For bigger or phased jobs, we’ll set out a timescale with the quote.
Do you take on small jobs?
Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.
How do we ask for a quote?
The quote form is the simplest route, though you can also give us a call on 01277 525 020 or email the details over. Photos, drawings or a joint schedule help us quote quickly.
Does the weather affect the work?
For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
What does a mastic package typically include?
Window and door perimeters, internal decorators’ caulk where specified, sanitary joints, kitchens, movement joints and snagging. The scope follows your specification.
Keeping the joints sound
For the best life from the joints:
- Get the mastic subcontractor involved early in the programme
- Keep finished joints away from paint, plaster and scrapers
- Brief the final clean team to avoid blades near sealant
- Record the products used in the O&M file
If a joint is damaged after sealing, flag it early. We can return to clear snags before handover, priced as part of the package or separately.
One unsealed frame can let water into finished internal areas. On a new building that means remedial work after decorating and possibly a delayed handover. Checking perimeters before internal finishes go on avoids it.
On site: what to expect
The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. Jobs in and around smaller places like North Mundham are typically planned as a single visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Plots or floors are sealed as they’re handed over.
- Joints are prepared, backed and sealed to the specification.
- After snagging, the work is handed over under our 12-month guarantee.
Getting the site ready
- Tell us what induction or permit system the site runs
- Make sure the joints can be reached
- Arrange parking or a loading space
Ask for a quote
Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings you can plan around. For a chat about it beforehand, ring 01277 525 020 or email the details over.
Advice
Signs you need construction mastic in North Mundham
Dust is the enemy of adhesion on a construction site. Dust, film adhesive, damp and grease on the joint faces prevent a proper bond.
Look out for the following:
- Oversized or tapered gaps around new frames
- Sealant knocked or painted over by other trades
- Caulk cracking where joints are moving more than expected
- Existing joints on a refurb that need cutting out and resealing
For a contractor working at a hospital such as St Richard's Hospital, 2.2 miles to the north of North Mundham, perimeter and facade sealing is planned around patients and deliveries.
Comparing quotes
- Health and safety accreditation such as CHAS
- The terms of the workmanship guarantee
- Will CSCS-carded applicators be on site?
- How the joint faces will be prepared and primed
Why it’s worth doing now in North Mundham
Patching snags as they appear can feel quicker than a proper close-out. But one planned snagging pass through each area usually clears more for less disruption and saves applicators coming back again and again. We can run snagging as its own phase before handover. Older rural buildings around North Mundham move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
A quote for mastic packages depends on quantities, condition and access. Ask us for a fixed quote.
What you get with us
- Work carried out by CSCS-carded applicators
- A fixed quote before work starts
- Fully insured, including public liability cover
- A Constructionline member, so easy to vet
See how commercial sealant jobs are priced or our accreditations and insurance.
Different surfaces, different methods
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. We set the depth with backing rod to avoid three-sided adhesion.
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s paintable and suits gaps that don’t move while moving joints need a flexible sealant.