Catherington expansion joint sealing
Need expansion joint sealing in Catherington? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Brittle, chalky sealant on external joints
- Sealant peeling off one face of the joint
- Leaks through car park deck joints onto the level below
Expansion joint sealing for businesses in Catherington
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle expansion joint sealing in Catherington
Buildings and slabs are never completely still: temperature, moisture, shrinkage and loading all make materials grow and shrink. Movement joints are where that movement is absorbed. Mastic Doctor reseals movement joints in brickwork, blockwork, concrete, cladding and floors for buildings in Catherington. If you are dealing with water getting into the wall through a failed joint and previous reseals laid over old sealant, we can help. A specialist sealant contractor works differently from a general builder: in Catherington, that means joint design, primers and backing rod as standard.
Around smaller places such as Catherington, floor joints are often in barns and farm buildings turned into workshops, stores and offices. Joints in those slabs take vehicles, trolleys and foot traffic, and need a filler or sealant to match.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.
- Location
- Catherington (PO8)
- Region
- Hampshire
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Should maintenance staff do it?
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
Work for main contractors and building owners
Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
For main contractors, we work as the sealant subcontractor. Programme, specification and site rules come first, with CSCS-carded applicators on site.
After the work
Regular inspection catches problems early. Specifically:
- Put movement joints on the planned maintenance inspection round
- Reopen bays and walkways only after the stated cure time
- Look over external and deck joints after a hard winter
- Treat a small split as a warning, not a cosmetic issue
Floor joints on main traffic routes need watching more closely than the rest. Keep racking feet and heavy point loads off joint lines and flag chipped arrises before they spread.
Once debris packs a failed joint, the structure has nowhere to expand. The edges then take the pressure and start to spall. Keeping the seal sound avoids all of that.
Catherington: questions and answers
Is hospital work, at somewhere like Havant War Memorial Hospital, something you do?
Yes. Healthcare sites are among the places we work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Is Catherington too small for you to travel to?
No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. Where we can, we group nearby jobs to make the most of each trip.
Can weather delay the job?
Outside, 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.
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.
Is any job too small?
Small jobs are welcome alongside larger packages. Photos and a description are enough to start.
When can you be on site?
The office is staffed Monday to Friday, from 8am until 5pm. Tell us your site hours and access windows and the work will be fitted around them.
Do you use silicone or polyurethane in movement joints?
It depends on the movement, exposure and traffic. Facades often take a low-modulus silicone; floors and decks normally need a polyurethane unless the specification names something else.
Other services in Catherington
Cost factors for movement joints
Your fixed quote is built from the real scope. It takes account of:
- Specialist products, such as fire-rated or hygienic sealants
- Joint width, depth and condition
- Travel to remote or island sites
- How accessible the joints are
The price depends on how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote once you have the details.
What to include in your enquiry
We can often quote from photos and a few details. It helps to include:
- Rough lengths or quantities, or drawings if you have them
- Where the site is, with the postcode
- Whether an asbestos survey exists
- The type of building and who uses it
Let us know the site, the scope and your timescale, and a fixed quote will follow. To get it moving, speak to us on 01277 525 020 or email the details over.
How the job changes by surface
Internal floor movement joints
Warehouse and retail floors have saw-cut induced joints and construction joints. A semi-rigid filler is common in trafficked industrial floors.
Brickwork and blockwork joints
Vertical movement joints in brick and block walls let the masonry grow and shrink. We use a sealant rated for the movement, usually low-modulus.
Expansion joint sealing in Catherington: the local picture
Central London is about 56 miles from Catherington. The roads out of London are lined with trade parks and distribution sheds, and their floor joints take forklift and pallet-truck traffic all day. Catherington has two named business or industrial parks inside a 3-mile radius. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest.
Large sites such as Havant War Memorial Hospital, 5.3 miles to the south of Catherington, have car parks, service roads and long elevations with movement joints in brick and panels. At places like Westfield Industrial Estate, 1.2 miles south-east of Catherington, joints are sealed a section at a time so operations carry on. For a school such as Catherington Church of England Infant School, playground and building joints can be done in the holidays.
Catherington is about 2 miles north of Horndean, in Hampshire. We cover Catherington, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 723 places in Hampshire, large and small. Portsmouth is covered too, some 9 miles away.
Anyone looking for expansion joint sealing in PO8 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. For a building on Glamorgan Road, Wrexham Grove and White Dirt Lane or nearby, send details and we will quote for movement joints. If your building is just outside Catherington, we cover Clanfield (1 mile north), Lovedean (2 miles south-west), Horndean (2 miles south), Wecock Farm (2 miles south-west) and Anmore (3 miles south-west). Bigger towns within reach include Gosport (11 miles south-west), Havant (5 miles south), Eastleigh (15 miles west), Fareham (10 miles south-west), Alton (15 miles north) and Hedge End (13 miles west).
Around Catherington
In Catherington, that means premises near Horndean Technology College. The closest station to Catherington is Rowlands Castle station, about 3.5 miles south-east of the centre. Nearby you will also find Havant War Memorial Hospital (5.3 miles south) and Clanfield Earthwork (1.7 miles north-east). Open spaces near Catherington include Windmill Hill.
On site: what to expect
Inspect, seal, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. If others near Catherington need work, visits can be combined. You’ll have a fixed quote before work starts.
- We start with photos, approximate lengths and any drawings, visiting where needed.
- We compare each joint’s width with the movement and the sealant’s capability and tell you if the design looks wrong for the movement.
- Old sealant and debris are cut out of every joint.
- Any broken arrises or friable edges are flagged before work goes further.
- A sealant suited to the movement and traffic is laid to depth and tooled.
- Areas reopen once cured, and the work carries our 12-month guarantee.
Before we start on site
- Move anything stored against the joints
- Agree which areas must stay open
- Send asbestos survey details if the building is pre-2000
Get a fixed quote
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or phone 01277 525 020 or email the details over to discuss it first.