Expansion and movement joint sealing in Knaphill, Surrey
Expansion and movement joint sealing in walls, decks and floors across Knaphill, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Water getting into the wall through a failed joint
- Sealant peeling off one face of the joint
- Chipped joint edges on forklift routes
Expansion joint sealing for Knaphill sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Surface by surface
Cladding panel joints
Access to cladding joints is agreed before the price is fixed. Photos taken near the joints help us price accurately or a site visit fills the gaps.
Car park decks and ramps
Failed deck joints often show as leaks on the level below. The old seal comes out, the edges are prepared and the joint resealed flagging broken edges along the way.
Expansion joint sealing for commercial buildings in Knaphill
Few joints take as much punishment as those in a car park. Wheel loads, grit and de-icing salts attack the seal and the concrete either side. A sealant suited to traffic and the expected movement goes in, phasing bays so the car park can stay in use. Site teams most often ask us about sealant peeling off one face of the joint and water getting into the wall through a failed joint, on blockwork control joints, podiums and floor movement joints and cladding panel joints. Most enquiries from Knaphill start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Small units near places like Knaphill are often converted farm buildings with new concrete floors. Joints in those slabs need a product suited to whatever runs over them, from pallet trucks to foot traffic.
Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Where
- Knaphill (GU21, GU24)
- Wider area
- Surrey
- Guarantee
- 12 months on every job
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
FAQs: Knaphill
Is hospital work, at somewhere like Cygnet Hospital, something you do?
Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.
Is a smaller place like Knaphill outside your area?
No. Places such as Knaphill are covered as much as the big towns. London and every South East county are within our area. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Does the weather affect joint sealing?
Sealant needs a dry joint and a temperature within the product’s range. Frost, rain and condensation on steel or concrete can hold up external work so external dates keep some flexibility.
Will you come and look before quoting?
That depends on the size and complexity of the job. Simple work can often be priced from photos, and bigger or more complex jobs typically get a visit.
What sealant do you use in movement joints?
The right product depends on the joint. Facades often take a low-modulus silicone; floors and decks normally need a polyurethane, and the specification has the final say.
Can weather delay the job?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
What site paperwork can you supply?
Requirements differ from site to site, so tell us what you need and we’ll confirm it when we quote.
Nearby places to Knaphill
Also in Knaphill
Expansion joint sealing in Knaphill: the local picture
Less than 3 miles from Knaphill there are two named estates and business parks. Sites like these are full of saw-cut floor joints, yard slabs and car park joints. Rainfall across the South East, Knaphill included, is lower than in many parts of the UK. External joints still wait for dry conditions, while winter salting gets into any joint left open.
Large sites such as Cygnet Hospital, less than half a mile south of Knaphill, have car parks, service roads and long elevations with movement joints in brick and panels. Another example is Martlands Industrial Estate, which lies south-east of Knaphill, where floors and yards would be done in stages around the occupiers.
Knaphill is about 2 miles west of Woking, in Surrey. We cover commercial sites throughout Knaphill, for single jobs and planned programmes alike. 379 places across Surrey fall within our area, Knaphill among them. Our Reading page has more on work in that area (18 miles or so).
Work on movement joints is covered throughout GU21 and GU24. For a building on Wood Lane, High Street and Barnby Road or nearby, we can quote for movement joints. Close to Knaphill, our area also takes in Bisley (1 mile north-west), Sheet's Heath (1 mile south-west), Castle Green (1 mile north), Brookwood (1 mile south-west) and Penny Pot (1 mile north). Nearby towns on our patch include Guildford (5 miles south), Camberley (5 miles west), Epsom (15 miles east), Farnham (11 miles south-west), Egham (8 miles north) and Walton-on-Thames (10 miles north-east).
Around Knaphill
In Knaphill, that means premises near Anchor Inn, The Winston Churchill School A Specialist Sports College and Brookwood Lye, among other places. For rail, the closest station is Brookwood station, roughly 1.4 miles south-west of the centre. A little further out are The Peacocks (2.5 miles east) and Brookwood Hospital (less than half a mile south). Green spaces nearby include Brookwood Lye.
Diagnose, treat, sign off
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. If neighbouring businesses or buildings around Knaphill need work too, visits can be combined. Tell us your site hours and we’ll plan around them.
- We start with photographs, approximate lengths and any drawings, visiting where needed.
- We compare each joint’s width with the movement and the sealant’s capability, and flag anything that needs an engineer.
- Old sealant and debris are cut out of every joint.
- Edges are checked, and we tell you if any need repairing before sealing.
- A sealant suited to the movement and traffic is laid to depth and tooled.
- Each area is handed back after its cure time, under our 12-month guarantee.
What we need from you
- Send asbestos survey details if the building is pre-2000
- Point out any areas we must not close
- Explain the parking and delivery arrangements
Getting a fixed quote
For a fixed quote, speak to us on 01277 525 020 or email drawings and photos with the site address and an outline of the work. Our quote form is another easy route.
Advice
When to bring in a specialist
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.
Some joints are best left to specialists: 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
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.
Signs you need expansion joint sealing in Knaphill
Weathering wears down sealant on exposed elevations and decks. In time the bead chalks, stiffens and cracks.
Clients normally get in touch after noticing one or more of the following:
- Rain penetration at brick or block movement joints
- Layers of sealant in a movement joint
- Movement joints with split or torn sealant
- Leaks through car park deck joints onto the level below
For an occupier at a site such as Goldsworth Park Trading Estate, 1.4 miles to the east of Knaphill, the joints at loading doors and dock levellers typically see the hardest wear.
Comparing quotes
- Their plan for phasing and protecting the area
- How the existing material will be dealt with
- How joint depth will be controlled
- The terms of the workmanship guarantee
Maintenance after handover
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. Our advice:
- Treat a small split as a warning, not a cosmetic issue
- Include every elevation and deck joint in periodic inspections
- Keep product details with the building records for the next reseal
- Brief car park operatives to protect joint lines during winter clearance
Add every elevation, deck and floor joint to your inspection round. A periodic look picks up tears and lifting before water gets in. Should you spot a problem, you can call the office on 01277 525 020 or email drawings and photos and send a picture.
When one joint fails, others of the same age are rarely far behind. It pays to check every joint, not just the obvious one. We’ll tell you which movement joints need doing now and which can wait.