Selsey construction mastic
Mastic packages for new-build and refurbishment projects in Selsey and across West Sussex. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Internal caulk splitting as the building dries out
- Existing joints on a refurb that need cutting out and resealing
- External joints sealed in damp or cold conditions that are now failing
Construction mastic for Selsey sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Common questions from Selsey clients
Can the mastic package for our job in Selsey follow the site programme?
Yes, we work to the programme and the sequence the site sets. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Will you take on work at estates like Selsey Business Centre, close to Selsey?
Yes. Estates, retail parks and business parks around Selsey, Selsey Business Centre among them, are all within reach. A few photographs and the unit address let us price the work.
How much does the work cost?
That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
How soon can the area be used again?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
What joints do you seal on a new build?
External perimeters and movement joints, internal caulking where specified, sanitary and kitchen joints, plus snagging.
Can you send site paperwork?
Requirements differ from site to site, so tell us what you need and we will confirm it when we quote.
About our construction mastic in Selsey
External mastic depends on the weather in a way most internal trades don’t. Each sealant has a temperature range, and damp, frost or condensation on frames stops work so it helps to sequence elevations with some flexibility. Internal sealing often fills those days. We work on cladding and panel joints, internal decorators’ caulk and window and door perimeters, and the usual reasons a site gets in touch are sanitary sealant damaged by following trades and window and door perimeters that won’t pass inspection. A single leaking joint is often how a building in Selsey 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 towns like Selsey, sites are usually modest: small housing schemes, extensions to schools and surgeries, refurbished shops and offices. The perimeter and facade joints on a small scheme need the same sizing and preparation as on a big one.
Work we carry out comes with a 12-month guarantee. If an installation problem shows up, ring 01277 525 020 or send details through our quote form and we will arrange a return visit.
- Place
- Selsey (PO20)
- Region
- West Sussex
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Building and refurbishing in Selsey
Selsey is within about 1 mile of the coast. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, and the sealant, primer and backing need choosing with that in mind. Selsey is about 61 miles from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes.
When a school such as Seal Primary Academy is extended or refurbished, the mastic package is often squeezed into the holidays.
Selsey is about 6 miles south-west of Bognor Regis, in West Sussex. Commercial clients in Selsey can call on us for mastic packages. 373 places across West Sussex fall within our area, including Selsey. There’s a separate page for Portsmouth, about 14 miles away.
Anyone looking for construction mastic in PO20 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are Church Road, High Street and Ellis Square. You’ll find Selsey on or near the B2145, so getting applicators and materials to site is simple. Just outside Selsey, we also work in Church Norton (1 mile north-east), Keynor Estate (2 miles north), Sidlesham (3 miles north), Pagham (3 miles north-east) and Street End (4 miles north). Bigger towns within reach include Bognor Regis (6 miles north-east), Chichester (7 miles north), Littlehampton (12 miles north-east), Rustington (13 miles north-east), Angmering (15 miles north-east) and Portfield (7 miles north). As one of the bigger centres in West Sussex, Selsey has a broad mix of commercial, public and industrial buildings, and we cover them all.
Local landmarks in Selsey
Around Selsey, our work takes us to commercial buildings near The Academy, The Fisherman's Joy Public House and The Academy and the streets around them. Nearby you will also find Selsey Lifeboat Museum (0.5 miles south-east).
What we are called out for in Selsey
Frames installed with uneven gaps make perimeter sealing harder. Every product has limits on how wide a joint it can bridge, so gaps outside that range need sorting by the installer first. We flag them early rather than filling them with sealant that won’t last.
Look out for the following:
- Frame gaps too wide for sealant alone
- Frame perimeters left unsealed or poorly sealed
- Sealant knocked or painted over by other trades
- Old sealant on a refurbishment that needs stripping before new work
Recladding or extending a unit at a site like Selsey Business Centre (less than half a mile south-west of Selsey) brings panel joints and frame perimeters into the programme.
Comparing quotes
- Are they CHAS accredited or on Constructionline?
- How they’ll work around occupants
- Will failed sealant be removed rather than covered?
- Will CSCS-carded applicators be on site?
Why deal with it now?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. Sound frames often need only a new perimeter seal and that’s a far smaller job. We will say so if a frame itself is the problem. For businesses and landlords in Selsey, a tidy, sound joint also matters for appearance. Renewing it keeps the building looking cared for.
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you’ll have a fixed figure to work with.
Why us?
- One contact handling all your sites
- Colours confirmed for the specified product
- Joints cleaned back to sound surfaces
- CHAS accredited
Read how commercial sealant jobs are priced and our accreditations.
How a job runs
Before we leave any area, we remove the tape, clean down and inspect every joint. If an area should be left alone while the sealant cures, we say how long and put signs out. Most work in Selsey is one building at a time: a school, a unit, an office or a block. We start with your photos, drawings or a site visit, then send a fixed quote.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Paperwork is agreed and applicators are inducted on site.
- We seal plot by plot or floor by floor in line with the programme.
- Any frame gaps or issues outside our scope are flagged to the site team.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
Before we start on site
- Share your working hours and any access restrictions
- Move anything stored against the joints
- Arrange parking or a loading space
Getting a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, ring 01277 525 020 or email drawings and photos.
Read more
When something else is needed
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Joint design decisions that belong to the architect or engineer
- Faulty frames rather than failed sealant
- Frame gaps too wide for sealant, which the installer needs to correct
If in doubt, ring 01277 525 020 or email drawings and photos and we’ll say what we think.
Where we work in Selsey
- Brick and block movement joints
- Internal decorators’ caulk
- Cladding and panel joints
- Sanitary and kitchen joints
- Window and door perimeters
- Floor and skirting junctions
How the job changes by surface
Fire-rated sealant where specified
Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. The design and sign-off of fire stopping sit with the designer, principal designer or fire engineer.
Window and door perimeters
Perimeter joints between frames and the structure are the weather line on any new building. We use the specified perimeter sealant, normally a low-modulus neutral-cure silicone, with backing rod in deeper gaps.
What affects the price in Selsey
What shapes the price:
- Access and working height
- Removal of failed or old sealant
- The total length or number of joints
- The size and state of each joint
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Sending details for a quote
Diagnosis starts before we arrive. Let us know:
- Anything awkward about access or site hours
- The asbestos register, for older buildings
- When you need the work done
- Approximate linear metres or a joint schedule
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.