Expansion joint sealing in Alverstoke
Expansion and movement joint sealing in walls, decks and floors across Alverstoke, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Torn sealant in brick or block movement joints
- New sealant over old, now failing
- Damp inside where a wall movement joint has failed
Expansion joint sealing for businesses in Alverstoke
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Different surfaces, different methods
Car park decks and ramps
Deck and ramp joints take tyre loads, grit and de-icing salts. A trafficable sealant suited to the movement goes in.
Brickwork and blockwork joints
A brick movement joint full of old mortar or debris can’t close. We clear the joint fully before sealing.
How we handle expansion joint sealing in Alverstoke
For movement joints in Alverstoke, photographs and approximate lengths are the best start. We’ll come and look where photos don’t show enough before issuing a fixed quote. You can also phone 01277 525 020 or email us to talk the joints through. We work on blockwork control joints, brickwork movement joints and cladding panel joints, and the failures we’re asked to look at most are leaks through car park deck joints onto the level below and rain penetration at brick or block movement joints. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Alverstoke it comes down to the same thing: the right product in a properly prepared joint.
For a site near Alverstoke, measurements and photos up front mean one trip where possible. Note joint widths and the traffic that uses them, and we will take it from there.
Our workmanship is guaranteed for 12 months, in Alverstoke as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Location
- Alverstoke (PO12)
- Region
- Hampshire
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Also in Alverstoke
Common questions from Alverstoke clients
Can you work at a site such as QinetiQ Haslar Marine Technology Park, by Alverstoke?
Yes. Estates, retail parks and business parks around Alverstoke, QinetiQ Haslar Marine Technology Park among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.
Would you work within a site like Gosport War Memorial Hospital?
Yes, provided the work is planned with the site’s estates team. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can you quote from photographs?
That depends on the size and complexity of the job. Simple work can often be priced from photographs, while larger or less clear jobs get a site visit first.
Can a joint be sealed if the edges are broken?
A bond is only as strong as the material behind it, so broken or crumbling edges have to be repaired first. We flag it at the quote stage where we can see it.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
How do you choose the sealant?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
How long will the new sealant last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
How a job runs
We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you. For work around Alverstoke, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- We look at the joints, their width and how they’ve failed.
- You get a fixed quote with the product and its movement capability stated.
- The failed seal is removed and both faces are cleaned until sound and dry, flagging any broken edges that need repair before sealing.
- Backing rod goes in at the right depth, or bond-breaker tape where the joint is shallow.
- After any primer the maker requires, the bead is applied and tooled so it grips two sides only.
- Finished joints are checked and backed by our 12-month guarantee.
Getting the site ready
- Share the asbestos register for older buildings
- Share your working hours and any access restrictions
- Warn occupants and staff about the work
Quotes
For a fixed quote, ring 01277 525 020 or send details through our quote form with the site address and an outline of the work. Our quote form is another easy route.
Advice
Looking after the joints
For the best life from the joints:
- Sweep decks, ramps and floors so grit doesn’t collect in the joints
- Look over external and deck joints after a hard winter
- Raise snow-clearing blades over deck joints where possible
- Record the sealant used and the date in the O&M file
On car parks, winter clearance can damage deck joint sealant. Raising blades over joints where possible protects the seal, and it’s worth checking joints once the cold weather has passed.
Joints sealed at the same time generally fail around the same time. It pays to check every joint, not just the obvious one, so the work can be planned rather than rushed. We can suggest an order, worst joints first.
Cost factors for movement joints
Quotes vary with the job. Expect it to depend on:
- Backing rod, priming and other preparation
- Phasing around occupants
- The product specified
- Access and working height
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 we will put a fixed figure on it.
What we need to price the job
The more we know, the firmer the quote. Helpful details to send:
- Approximate linear metres or a joint schedule
- Any specification or named product
- Asbestos survey details if the building is older
- Anything awkward about access or site hours
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or call 01277 525 020 or use the quote form to discuss it first.
Common problems we fix in Alverstoke
Most movement joint failures come down to the joint stretching further than the sealant can take. Cohesive failure, a split through the centre, usually means the joint or product wasn’t right for the movement. The same product in the same joint tends to fail again.
Common reasons buildings call us in:
- Expansion joints filled with dirt and stones
- New sealant over old, now failing
- Leaks through car park deck joints onto the level below
- Arrises breaking up along floor joints
For buildings at a park such as QinetiQ Haslar Marine Technology Park, 1 mile to the north-east of Alverstoke, brick and panel movement joints are easy to forget until one leaks.
What to look for in a quote
- Can the work be phased to keep areas open?
- What the guarantee covers, and for how long
- Who will actually carry out the work
- Do they follow the manufacturer’s priming guidance?
Site staff or a sealant specialist?
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.
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
Warehouse floors and decks around Alverstoke
Alverstoke is within about 1 mile of the coast. Coastal yards and decks give their joints salt and wet weather to deal with, not just wheels, which is why split joints are worth sealing before the edges deteriorate. At least three named trading, business or retail sites lie within about 3 miles of Alverstoke. Their warehouses, yards and car parks are exactly where joints take the most punishment.
Another example is Cranbourne Industrial Estate, which lies north-east of Alverstoke, where floors and yards would be done in stages around the occupiers. Campuses like University of Portsmouth - North Zone (to the north-east of Alverstoke) mix old and new buildings, with movement joints wherever they meet.
Alverstoke is about 2 miles south of Gosport, in Hampshire. Alverstoke sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Hampshire, 723 places are covered, Alverstoke among them.
Anyone looking for expansion joint sealing in PO12 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are The Lane, Fort Road and Church Road, and sites on any of them can send details for a fixed quote. Sites close to Alverstoke are covered too, including Clayhall (1 mile east), Haslar (1 mile east), Privett (1 mile north-west), Portsmouth Point (2 miles north-east) and Portsea (2 miles north-east). A short drive away, we cover Havant (9 miles north-east), Fareham (5 miles north), Horndean (11 miles north-east), Hedge End (12 miles north-west), Waterlooville (9 miles north-east) and Purbrook (8 miles north-east).
What’s near Alverstoke
Locally, jobs take us to sites close to Bay House School and Village Home pub. Alverstoke’s nearest station is Portsmouth Harbour station, roughly 2.1 miles north-east. Well-known places in the area include Tricorn Centre (3 miles north-east) and Gosport War Memorial Hospital (0.9 miles north). Green spaces nearby include West of the River Alver.