Expansion Joint Sealing in Knightwood
Work needed on a movement joint in Knightwood? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Joints packed with grit and debris
- Hardened, cracked sealant on exposed facades
- Leaks through car park deck joints onto the level below
Expansion joint sealing near Knightwood
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How the job changes by surface
Podium joints
On podiums, the joint can belong to a larger waterproofing detail. Where the specification calls for sealant, we reseal, and tell you if the problem looks like the waterproofing below.
Brickwork and blockwork joints
Vertical movement joints in brick and block walls let the masonry grow and shrink. They take a low-modulus sealant with a movement class to suit laid over backing rod at the correct depth.
Expansion joint sealing in Knightwood
A movement joint only works while its seal does. When the sealant splits or lets go, the gap fills with dirt and water; the joint jams, its edges take the load and the arrises spall. Resealing at the first signs of failure is far cheaper than repairing the material either side. Most enquiries involve leaks through car park deck joints onto the level below and expansion joints filled with dirt and stones, on car park decks and ramps, blockwork control joints and podiums and floor movement joints. Most enquiries from Knightwood 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.
Work in a smaller place like Knightwood is typically one building at a time. Getting widths, depths and traffic details up front means one visit, not two.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- Knightwood (SO53, SO52)
- Region
- Hampshire
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Should maintenance staff do it?
Some joints are best left to specialists: for instance 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.
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
What sets the cost
The price varies from site to site. It mainly depends on:
- Specialist products, such as fire-rated or hygienic sealants
- How much there is to seal
- Site requirements such as inductions and permits
- Travel to remote or island sites
What a job costs comes down to the quantity of joints, what has to come out first and the access. Call for a quote when you’re ready.
What to include in your enquiry
The more we know, the firmer the quote. When you get in touch, include:
- The asbestos register, for older buildings
- When you need the work done
- Specification clauses that apply
- Photos of the joints, close up and from further back
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or give us a call on 01277 525 020 or email us to discuss it first.
Floors, slabs and movement joints in Knightwood
Knightwood sits in one of the drier corners of the country, the South East. External slab and deck joints still need a dry, clean joint to seal, and gritting in cold spells finds its way into open joints. Knightwood lies roughly 67 miles out from central London. The roads out of London are lined with trade parks and distribution sheds.
For estates staff at a university like University of Southampton (4.2 miles south of Knightwood), building and paving joints are part of the planned maintenance list. Hospital campuses such as Wessex Hospital (1.9 miles east of Knightwood) grow in stages, leaving movement joints wherever new blocks meet old.
Knightwood is about 1 mile west of Chandler's Ford, in Hampshire. Any commercial site in Knightwood is covered. Knightwood is one of 723 places we cover in Hampshire for movement joints.
If you need expansion joint sealing in SO53 and SO52, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Foyle Road, Harvest Road and Flexford Road or close by, send details and we will quote for movement joints. Close to Knightwood, our area also takes in Chilworth Old Village (2 miles south-west), Chilworth (2 miles south), North Baddesley (2 miles west), Toothill (3 miles south-west) and Bassett (3 miles south). A short drive away, we cover Winchester (6 miles north-east), Eastleigh (3 miles south-east), Fareham (13 miles south-east), Totton (7 miles south-west), Hedge End (7 miles south-east) and Romsey (4 miles west).
Around Knightwood
Recent enquiries here include premises near Toynbee School and the streets around them. For rail, the closest station is Chandlers Ford station, about 0.8 miles south-east of the centre. A little further out are Romsey Community Hospital (3.5 miles west) and Eastleigh Museum (2.5 miles south-east). Not far away are Flexford Nature Reserve.
Our process
Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. For a site in Knightwood, we plan so the whole job is done in one go where possible. Clear photos and measurements help us bring the right products.
- First, the joints are inspected for width, movement and the type of failure.
- Next, we fix a price and confirm the sealant we propose for the movement.
- We strip out the old seal and prepare the faces, and we tell you if any edges need repairing first.
- Closed-cell backing rod is set to depth, or bond-breaker tape in shallow joints.
- Primer goes on where the manufacturer specifies it, followed by the sealant, which is then tooled off.
- Finished joints are checked and backed by our 12-month guarantee.
Getting the site ready
- Point out parking and an unloading spot
- Clear stock, furniture or equipment away from the joints
- Point out any areas we must not close
Quotes
Let us know the site, the scope and your timescale, and we will put a fixed quote together. To get it moving, ring 01277 525 020 or email the details over.
Related advice
Towns and villages near Knightwood
What else we do in Knightwood
Knightwood: questions and answers
Does your area include sites such as Monks Brook Industrial Park, near Knightwood?
Yes. Estates, retail parks and business parks around Knightwood, Monks Brook Industrial Park among them, are all within reach. A few photographs and the unit address let us price the work.
Is a smaller place like Knightwood outside your area?
Not at all. Knightwood is within our area. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
When can the area be used after sealing?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.
How do you choose the sealant?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
How long does movement joint sealing take?
It usually takes a few hours to several weeks, depending on how many metres of joint there are and how much old sealant or filler needs removing and phased work can stretch that to suit your site. We will confirm when each area can be used again.
How do you deal with asbestos in old sealant?
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 if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.
What exactly is a movement joint?
The terms overlap a great deal. A movement joint allows for expansion, contraction, shrinkage and loading.
Why it’s worth doing now in Knightwood
Spot repairs can be useful on a tight budget. But if the rest of the run is the same age and product, it’s normally not far behind. Where it helps, we quote both options. Sealant hardens, cracks and loses grip with age, UV and movement. Replacing it before it fails keeps water out.
There’s no price list, because the scope varies so much from one building to the next. Call for a quote.
Why appoint us
- Clear, fixed quotes
- CHAS accredited
- One contact handling all your sites
- Over 20 years of commercial sealing
Read what affects the cost and our accreditations.
Signs you need expansion joint sealing in Knightwood
Most movement joint failures come down to the joint stretching further than the sealant can take. Cohesive failure, a split through the centre, normally means the joint or product wasn’t right for the movement. The same product in the same joint tends to fail again, so we check width and movement before quoting.
What tends to prompt an enquiry:
- Brittle, chalky sealant on external joints
- Chipped joint edges on forklift routes
- Torn sealant in brick or block movement joints
- Water dripping through deck or ramp joints
If you manage units on an estate such as Monks Brook Industrial Park, 0.6 miles to the south-east of Knightwood, the floor joints under forklifts and pallet trucks and the slab joints in the yard are the ones to watch.
Questions to ask before you book
- Are they CHAS accredited or on Constructionline?
- How the joint faces will be prepared and primed
- How they’ll work around occupants
- Whether old or failed sealant will be cut out, not overlaid