Expansion and movement joint sealing in Marshalswick, Hertfordshire
Expansion and movement joint sealing in walls, decks and floors across Marshalswick, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Brittle, chalky sealant on external joints
- Car park joints leaking onto vehicles below
- Joints packed with grit and debris
Expansion joint sealing in Marshalswick
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How a job runs
Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. For a job in Marshalswick, the main thing is a clear picture of the work. A fixed quote follows.
- Photos, joint lengths and drawings come to us, or we visit.
- 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.
- Each area is handed back after its cure time, under our 12-month guarantee.
Getting the site ready
- Flag any permit to work we will need
- Confirm the product named in the specification
- Arrange parking or a loading space
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.
Advice
How we handle expansion joint sealing in Marshalswick
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 while depth is limited by backing rod or, in shallow joints, a bond-breaker. For wider joints, many sealant makers recommend a width-to-depth ratio, often around 2:1, and the bead is tooled so it grips the two faces alone. We work on precast concrete panel joints, car park decks and ramps and podiums and floor movement joints, and the usual reasons a site gets in touch are hardened, cracked sealant on exposed facades and joints where the bead has lost adhesion. Facilities teams, main contractors and managing agents in Marshalswick tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.
Work in a smaller place like Marshalswick is usually one building at a time. Getting widths, depths and traffic details up front means one visit, not two.
The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Place
- Marshalswick (AL4, AL1, AL3)
- Region
- Hertfordshire
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
General trades versus a specialist
Redoing a failed joint normally costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
When something else is needed
Honesty saves time and money. New sealant won’t cure:
- Damaged metal nosings or cover plates over a joint
- Broken or spalled joint edges, which need repairing before any sealant goes in
- Structural movement beyond what the joints were designed for (that needs a structural engineer)
If you are not sure, just call the office on 01277 525 020 or email us and we’ll give you a straight answer before you book.
What we seal
- Brickwork movement joints
- Blockwork control joints
- Car park decks and ramps
- Cladding panel joints
- Precast concrete panel joints
- Podiums and floor movement joints
Marshalswick: questions and answers
Is hospital work, at somewhere like St Albans City Hospital, something you do?
Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.
Is Marshalswick off your patch?
No. Places such as Marshalswick are covered as much as the big towns. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.
What hours do you work?
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?
Whatever suits the joint and the specification. We name the proposed product in the quote, so you know what’s going in.
Can a joint be sealed if the edges are broken?
A bond is only as strong as the material behind it, so broken or crumbling edges have to be repaired first. We flag it at the quote stage where we can see it.
How do you deal with asbestos in old sealant?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.
Do you guarantee expansion joint work?
A 12-month guarantee covers our workmanship. Keeping joints clear of debris helps them last.
Where floor joints take the most wear near Marshalswick
Marshalswick has at least three named business or industrial parks inside a 3-mile radius. Sites like these are full of saw-cut floor joints, yard slabs and car park joints. Marshalswick is about 21 miles from central London. Distribution warehouses and industrial estates are common around the motorway corridors that serve the capital; their floors carry heavy traffic every shift.
University campuses such as University of Hertfordshire (to the east of Marshalswick) have car parks, paved walkways and building elevations with movement joints. Another example is Valley Road Industrial Estate, 0.9 miles to the north-west of Marshalswick, where floors and yards would be done in stages around the occupiers. A healthcare site such as St Albans City Hospital (to the west of Marshalswick) depends on car parks, ramps and service yards whose joints take traffic all day.
Marshalswick is about 1 mile north-east of St Albans, in Hertfordshire. Across the AL4 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 371 places in Hertfordshire. Sites around London have their own page, roughly 21 miles from Marshalswick.
Postcode districts covered here: AL4, AL1 and AL3. If your site is on Milvus Road, Jersey Lane and Sandpit Lane or close by, send details and we will quote for movement joints. If your building is just outside Marshalswick, we cover Sandridge (1 mile north), Bernards Heath (1 mile west), St Albans (1 mile south-west), Childwick Green (2 miles north-west) and Sopwell (2 miles south-west). Further afield, our area takes in Watford (8 miles south-west), Hemel Hempstead (7 miles west), Stevenage (11 miles north-east), Welwyn Garden City (5 miles north-east), Harpenden (4 miles north-west) and Hitchin (13 miles north).
Landmarks near Marshalswick
Locally, jobs take us to sites close to The Baton pub, Sandringham School and Clarence Park. The closest station to Marshalswick is St Albans station, about 1.3 miles south-west. Nearby you’ll also find St Albans Musical Museum (0.8 miles south-west) and The Maltings (1.6 miles south-west). Green spaces nearby include The Wick Local Nature Reserve and Verulamium Lake.
Surface by surface
Joints between different materials
Some mixed-material joints suit a hybrid sealant. The choice depends on the substrates and how much the joint moves, and confirm it in the quote.
Concrete and precast panel joints
Joints between precast panels open and close with temperature and loading. The sealant needs the right movement capability and a controlled depth.
Nearby places to Marshalswick
Other services in Marshalswick
What affects the price in Marshalswick
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- Joint width, depth and condition
- Removal of failed or old sealant
- Induction, permit and paperwork requirements
- Travel to remote or island sites
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote.
Details that help us quote
For an accurate fixed quote, we need to understand the site. Useful things to include:
- Drawings or a marked-up plan, if available
- What the building is and how it’s used
- When you need the work done
- Where the site is, with the postcode
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.
Why deal with it now?
Leaving a failed movement joint rarely stays a small problem. Grit and water fill the gap and the material either side breaks up. Acting at the first split keeps the cost down. A failed joint lets water into a building whatever its size. Early resealing avoids the damage that follows a leak.
Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Why appoint us
- Matching to RAL references, product permitting
- Health and safety: CHAS accredited
- Constructionline member
- Work carried out by CSCS-carded applicators
Read how commercial sealant jobs are priced or how we’re accredited.