Keyhaven expansion joint sealing
We carry out expansion and movement joint sealing in walls, decks and floors in Keyhaven and the surrounding area. Send details for a fixed quote.
- Expansion joints split through the centre of the bead
- Arrises breaking up along floor joints
- Water dripping through deck or ramp joints
Expansion joint sealing for businesses in Keyhaven
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle expansion joint sealing in Keyhaven
Joint design counts for as much as the sealant itself. The joint has to be wide enough for the expected movement and the sealant’s movement capability. For wider joints, many sealant makers recommend a width-to-depth ratio, often around 2:1. We work on brickwork movement joints, blockwork control joints and cladding panel joints, and the usual reasons a site gets in touch are expansion joints split through the centre of the bead and leaks through car park deck joints onto the level below. A specialist sealant contractor works differently from a general builder: on jobs in Keyhaven, preparation and product choice get the time they need.
For a site near Keyhaven, measurements and photographs up front mean one trip where possible. Tell us the joint widths if you can, and what drives or walks over them.
Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Where
- Keyhaven (SO41)
- Region
- Hampshire
- Cover
- 12 months on every job
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Common questions from Keyhaven clients
Our building in Keyhaven is near the coast: does that change the sealant?
It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.
Is Keyhaven too small for you to travel to?
Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. Good photos up front let us bring everything on the first visit.
How do I request a quote?
You can use the quote form on this site; alternatively, call 01277 525 020 or use the quote form. Include photographs or drawings if you have them.
What if there’s asbestos in the old mastic?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.
Which sealant will you use?
Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
What’s the difference between an expansion joint and a movement joint?
They’re closely related. A movement joint allows for expansion, contraction, shrinkage and loading, and the seal across it keeps water and debris out.
Are your applicators CSCS-carded?
Yes. If you need card details for site access, tell us and we will confirm them with the quote.
What we can’t put right
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Waterproofing layers buried beneath the sealant
- Structural movement beyond what the joints were designed for (that needs a structural engineer)
- A joint that has to be widened or re-detailed before it can work
If in doubt, call 01277 525 020 or email drawings and photos and we will say what we think.
Joints and surfaces we work on
- Precast concrete panel joints
- Brickwork movement joints
- Car park decks and ramps
- Podiums and floor movement joints
- Cladding panel joints
- Blockwork control joints
Expansion joint sealing in Keyhaven: the local picture
Keyhaven 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, and edges left open tend to break up faster. Keyhaven sits in one of the drier corners of the country, the South East. External joints still wait for dry conditions, while winter salting gets into any joint left open.
For a school such as Milford-on-Sea Church of England Primary School, playground and building joints can be done in the holidays.
Keyhaven is about 3 miles south of Lymington, in Hampshire. Commercial clients in Keyhaven can call on us for movement joints. Keyhaven is one of 723 places we cover in Hampshire for movement joints. Southampton is covered too, around 16 miles from Keyhaven.
Postcode districts covered here: SO41 for movement joints. If your site is on New Road, Keyhaven Road and Saltgrass Lane or close by, we can quote for movement joints. Sites close to Keyhaven are covered too, including Milford on Sea (1 mile west), Lymore (1 mile north-west), Lower Pennington (1 mile north-east), Everton (2 miles north-west) and Pennington (2 miles north). Bigger towns within reach include Totton (14 miles north), Hythe (12 miles north-east), New Milton (4 miles north-west), Ringwood (13 miles north-west), Warsash (15 miles north-east) and Barton on Sea (4 miles west).
What’s near Keyhaven
We work on buildings around The Gun Public House and Priestlands School and the streets around them. The closest station to Keyhaven is Lymington Town station, about 3 miles north-east of the centre. Other landmarks nearby include St Barbe Museum and Art Gallery (2.8 miles north-east) and Yarmouth Castle (3.3 miles east). The countryside around Keyhaven includes Milford on Sea LNR and Tennyson Down.
When to call us in Keyhaven
On trafficked joints, wheels and salts do the damage. Wheel loads stress the sealant and the arrises, while de-icing salts and grit attack the seal. A sealant that isn’t trafficable won’t last there.
Site and facilities staff are often the first to spot these:
- Layers of sealant in a movement joint
- Torn sealant in brick or block movement joints
- Joints where the bead has lost adhesion
- Debris jammed in movement joints
For an estate such as Lymington New Forest Hospital, 3.4 miles north of Keyhaven, the joints in ramps, decks and long building elevations all need attention over time.
Questions to ask before you book
- Who will actually carry out the work
- Whether old or failed sealant will be cut out, not overlaid
- Health and safety accreditation such as CHAS
- The named product and why it was chosen
After the work
For the best life from the joints:
- Put movement joints on the planned maintenance inspection round
- Plan racking layouts so feet don’t land on a joint
- Report split or peeling joint sealant early
- Inspect exposed joints once the cold weather has passed
Keep wheels, feet and water off new joints until the sealant has cured. The time varies with product, conditions and joint depth and we’ll tell you when each bay or area can reopen. Barriers left in place until then protect the finish.
Joints sealed at the same time generally fail around the same time. Inspecting the whole run is worth the effort. We’ll tell you which movement joints need doing now and which can wait.
Also near Keyhaven
More services for Keyhaven
Cost factors for movement joints
The price varies from site to site. Expect it to depend on:
- Any access equipment needed
- Which sealant the job calls for
- The total length or number of joints
- Working within restricted access windows
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.
Before you send an enquiry
Diagnosis starts before we arrive. Tell us:
- Clear photographs of the problem areas
- Rough lengths or quantities, or drawings if you have them
- The product your specification calls for
- The site address and postcode
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, speak to us on 01277 525 020 or email drawings and photos.
Site staff or a sealant specialist?
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
On site: what to expect
Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself normally takes a short visit for a handful of joints, or several days or more for a car park deck or long runs of facade joints, and our waste is bagged and taken away as we go. Jobs in and around smaller places like Keyhaven are usually planned as a single visit, so photographs and measurements up front really help. That way the right products come on the day.
- We start with photographs, approximate lengths and any drawings, visiting where needed.
- Joint widths and expected movement are checked against what the sealant can take and tell you if the design looks wrong for the movement.
- Old sealant and debris are cut out of every joint.
- Edges are checked, and we tell you if any need repairing before sealing.
- The right sealant goes in at the right depth, bonded to the two sides only.
- Each area is handed back after its cure time, under our 12-month guarantee.
What we need from you
- Send your site hours and access windows
- Let us know about inductions and permits
- Move anything stored against the joints
Get a fixed quote
To get a fixed quote, phone 01277 525 020 or email a schedule or drawings. Our quote form is another easy route.