Expansion Joint Sealing in Great Wymondley
Work needed on a movement joint in Great Wymondley? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Car park joints leaking onto vehicles below
- New sealant over old, now failing
- Torn sealant in brick or block movement joints
Expansion joint sealing for Great Wymondley sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Owners, agents and contractors
Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules.
FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.
Expansion joint sealing for commercial buildings in Great Wymondley
The seal is what lets a movement joint do its job. When the sealant splits or lets go, the gap fills with dirt and water. Resealing at the first signs of failure is far cheaper than repairing the material either side. We work on cladding panel joints, brickwork movement joints and podiums and floor movement joints, and what we’re called in for most is torn sealant in brick or block movement joints and sealant peeling off one face of the joint. Looking for mastic applicators who cover Great Wymondley? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Halls, schools and small commercial buildings near places like Great Wymondley have movement joints in brick, block and concrete too. They’re easily forgotten until water gets in or an edge breaks.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Place
- Great Wymondley (SG4)
- Wider area
- Hertfordshire
- Cover
- 12 months on every job
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Towns and villages near Great Wymondley
Other services in Great Wymondley
FAQs: Great Wymondley
Would you work within a site like Pinehill Hospital?
Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.
Is a smaller place like Great Wymondley outside your area?
No. Places such as Great Wymondley are covered as much as the big towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.
Is movement joint sealing guaranteed?
The workmanship is guaranteed for 12 months from sign-off, and we’re fully insured for public liability. Regular sweeping and inspection help the joints last.
Will your applicators have CSCS cards?
Yes. We use CSCS-carded applicators, as many construction sites ask for.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.
Can you send site paperwork?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
How long before the joints can be used?
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.
What we’re called out for in Great Wymondley
Sealant peeling cleanly off one side is an adhesion failure. Poor preparation, a skipped primer, or sealant bonded to the back of the joint are typical reasons, and it’s common on joints sealed in a hurry.
Typical triggers for a call:
- Water dripping through deck or ramp joints
- Arrises breaking up along floor joints
- Water getting into the wall through a failed joint
- Weathered movement joint sealant that no longer flexes
Places like Letchworth Gateway Retail Park, 2.7 miles to the north-east of Great Wymondley, put trolleys over floor joints inside and cars over slab joints outside.
Comparing quotes
- Will failed sealant be removed rather than covered?
- How joint depth will be controlled
- Can the work be phased to keep areas open?
- Their public liability cover
When it isn’t the sealant
Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is one of these:
- Structural movement beyond what the joints were designed for (that needs a structural engineer)
- Leaks coming from the membrane rather than the joint seal
- Damaged metal nosings or cover plates over a joint
If in doubt, phone 01277 525 020 or email a schedule or drawings and we’ll say what we think before you book.
What we seal
- Precast concrete panel joints
- Blockwork control joints
- Car park decks and ramps
- Cladding panel joints
- Podiums and floor movement joints
- Brickwork movement joints
When to bring in a specialist
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Why deal with it now?
Leaving a failed movement joint rarely stays a small problem. Water and debris get in, the joint jams and the edges spall. Resealing early keeps the work to sealant. Older rural buildings around Great Wymondley move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote.
Why appoint us
- Failed material removed, not covered up
- One phone line for London, the South East and Scotland
- Fully insured, including public liability cover
- 12-month guarantee on workmanship
Our process
At the end of each section, we remove the tape, clean down and inspect every joint with your site contact. Where the sealant needs time to cure before use, we tell you and sign the area. If others near Great Wymondley need work, visits can be combined. A fixed quote is given before anything starts.
- We start with photos, approximate lengths and any drawings, visiting where needed.
- Joint widths and expected movement are checked against what the sealant can take.
- Every joint is cleared of the failed seal and any grit packed into it.
- 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.
- Areas reopen once cured, and the work carries our 12-month guarantee.
Preparing the site
- Send any specification or drawings in advance
- Point out any areas we must not close
- For older buildings, check the asbestos register before work
Request a quote
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, speak to us on 01277 525 020 or email the details over.
Related advice
Where floor joints take the most wear near Great Wymondley
Great Wymondley lies roughly 31 miles out from central London. The South East has large numbers of industrial estates and warehouses along the motorway corridors; their floors carry heavy traffic every shift. Rainfall across the South East, Great Wymondley included, is lower than in many parts of the UK. External joints still wait for dry conditions, and gritting in cold spells finds its way into open joints.
For a school such as Wymondley Junior Mixed and Infant School, playground and building joints can be done in the holidays. Large sites such as Pinehill Hospital, 1.3 miles west of Great Wymondley, have car parks, service roads and long elevations with movement joints in brick and panels.
Great Wymondley is about 2 miles east of Hitchin, in Hertfordshire. We cover commercial sites throughout Great Wymondley, for single jobs and planned programmes alike. 371 places across Hertfordshire fall within our area, including Great Wymondley. For work in that direction, see our London page.
Commercial sites across SG4 are covered for movement joints. We cover commercial and managed buildings on Graveley Road, Hitchin Road and Arch Road. If your building is just outside Great Wymondley, we cover Little Wymondley (1 mile south), Poets Estate (1 mile north-west), Graveley (1 mile south-east), Titmore Green (1 mile south) and Willian (1 mile north-east). A short drive away, we cover Stevenage (3 miles south-east), St Albans (14 miles south), Welwyn Garden City (10 miles south), Harpenden (10 miles south-west), Hatfield (12 miles south) and Hertford (12 miles south-east).
Around Great Wymondley
We work on buildings around Hitchin Girls' School, The Green Man pub and Kingshott School and the streets around them. The nearest railway station is Hitchin station, about 1.4 miles north-west of the centre. Well-known places in the area include North Hertfordshire Museum (2 miles west) and Lister Hospital (1.6 miles south-east). Not far away are Purwell Ninesprings.