Construction Mastic in Itchen
Construction mastic for Itchen, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Mastic snags holding up handover
- Cracks opening in caulked internal joints
- Sanitary sealant damaged by following trades
Construction mastic near Itchen
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic in Itchen
Mastic tends to be one of the final packages before handover, so it lands at exactly the point the programme is tightest. We work as a mastic subcontractor to main contractors and developers on schemes in Itchen, sealing plot by plot or floor by floor as areas are released. Most enquiries involve mastic snags holding up handover and a mastic package split between trades with no clear owner, on floor and skirting junctions, sanitary and kitchen joints and cladding and panel joints. Whoever orders the work in Itchen, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.
Conversions around smaller places like Itchen often join new frames to old masonry or timber, which leaves joints between old walls and new frames that need a sealant able to take the movement, in a colour the planners or architect are happy with.
Our workmanship is guaranteed for 12 months. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- Itchen (SO19, SO14)
- Region
- Southampton
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Different surfaces, different methods
Kitchens and utility areas
Worktop upstands, sinks and splashbacks are sealed once the kitchen is fitted. The sealant is a kitchen-grade product and hygienic or food-safe grades wherever food contact is possible.
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, usually a low-modulus neutral-cure silicone.
Places near Itchen
Other services in Itchen
Why it’s worth doing now in Itchen
Some packages split mastic across the window fitter, kitchen fitter and plumber. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple and a consistent finish. In a smaller place such as Itchen, getting a contractor back for a second visit takes time, so it’s worth dealing with every failing joint at once.
What a job costs comes down to how many linear metres there are, what has to come out first and the access. Call for a fixed quote once you have the details.
Why appoint us
- Matching to RAL references, product permitting
- A range of standard colours, depending on the product
- CHAS accredited contractor
- Joints cleaned back to sound surfaces
See how commercial sealant jobs are priced and our accreditations.
Questions about Itchen
Does the sea air around Itchen change the choice of sealant?
It can. Coastal exposure works external joints harder than inland weather. We check the specified product suits the exposure and pay close attention to preparation.
Can work at a site such as Solent University fit around teaching?
Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is any job too small?
We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.
How long will the new sealant last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
How do we ask for a quote?
It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photographs and a postcode.
Can you handle several sites?
Yes. Several buildings can share a single quote, with one point of contact across South East England, Greater London and Scotland.
Which sealant will you use?
A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
For managing agents and facilities managers
Building owners and managing agents use us on sealant work across single buildings or whole portfolios around Itchen. Several sites can go on one quote, which keeps the paperwork simple.
If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
Our process
Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then reopened once the sealant allows before the next one starts. If neighbouring businesses or buildings around Itchen need work too, visits can be combined. Tell us your site hours and we’ll plan around them.
- We start with the drawings, specification and programme.
- Quantities are measured and a fixed price returned.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Getting the site ready
- Clear stock, furniture or equipment away from the joints
- Send any specification or drawings in advance
- Send asbestos survey details if the building is pre-2000
Request a quote
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. To get it moving, speak to us on 01277 525 020 or send photos by email.
Read more
Construction mastic in Itchen: the local picture
Itchen is within about 1 mile of the coast. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, and the sealant, primer and backing need choosing with that in mind. The area within 2 miles of Itchen holds a good number of hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
Units on estates such as Central Trading Estate, 0.9 miles west of Itchen, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal. Building work at universities like Solent University (1.4 miles west of Itchen) is often timed for the summer, mastic included. Hotel extensions and refits, at places such as Marsh Hotel, which lies west of Itchen, normally run between busy periods, so the sealing is squeezed into short windows.
Itchen is about 2 miles south-east of Southampton, in Southampton. Businesses, contractors and managing agents in Itchen can call on us for mastic packages. Our Southampton coverage takes in 30 places, from busy centres to rural villages.
Postcode districts covered here: SO19 and SO14 for mastic packages. If your site is on Sea Road, Oak Road and West Road or close by, we can quote for mastic packages. With the A3025 nearby, Itchen is straightforward for us to reach. If your building is just outside Itchen, we cover Peartree Green (1 mile north-west), Northam (1 mile north-west), Sholing (1 mile east), Bitterne (1 mile north-east) and St Mary's (1 mile west). A short drive away, we cover Shirley (3 miles north-west), Regents Park (3 miles west), Maybush (4 miles north-west), Coxford (4 miles north-west), Freemantle (3 miles west) and Lordswood (4 miles north-west). Itchen ranks among the main centres of Southampton, with offices, shops, schools and other public and commercial buildings, and we cover them all.
Near you in Itchen
Locally, jobs take us to sites close to Houndwell Park, Woolston School and Oasis Academy Sholing. There’s a railway station in Itchen itself: Woolston station. Nearby you’ll also find Bitterne Local History Society Heritage And Research Centre (0.9 miles north) and Marlands Shopping Centre (1.6 miles west). For a walk, there’s Netley Common.
Keeping the joints sound
After handover, a little attention goes a long way:
- Bring the mastic contractor in after the last trades are through
- Keep finished joints away from paint, plaster and scrapers
- Check frame gaps are within the sealant’s range before sealing
- Allow flexibility for external sealing in damp or cold weather
At handover, keep the product details with the O&M information. Future maintenance is easier when the products are known and avoids guesswork when joints are renewed. Tell us what records you need and we’ll confirm with the quote.
Oversized gaps are a problem better caught early. Filling a wide gap with sealant alone sets up a failure so packing or adjustment by the installer comes first. We raise them during our first walk of the area.
Should maintenance staff do it?
Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
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.