Structural Movement Joint Sealing
Expansion Joints
Structural movement joint sealing for commercial and industrial buildings. We remove failed sealant, install the right backing and primer, and apply a sealant that can handle the expected movement.
What Expansion Joints Do
- Structural movement joint sealing
- Sealant selected for the joint movement
- Backing rod installed at the correct depth where required
- Priming and surface preparation
- Floor, wall, ceiling and façade joints
- Commercial and industrial applications
- Drawings and specifications reviewed where provided
Common Problems
Sealant tearing at movement joints
The wrong sealant or no backer rod causes the bead to tear as the joint moves. We install the right system for the joint's expected movement.
Water ingress through horizontal joints
Failed deck or floor joints can let water through. We replace the sealant with a product that can handle the movement.
Debris and failed backing rod
Old backer rod can degrade and hold water. We remove it and install the correct backing material before resealing.
Joint width too large for basic sealant
Wide joints need the right sealant and sometimes a backer rod. We size and detail the joint correctly.
Our Process
Joint survey
We measure the joint width, depth and movement range and check the substrate condition. For specification-led work we review drawings or manufacturer details.
Product selection
We select a sealant system based on joint movement, exposure, substrate and manufacturer or specifier guidance.
Preparation
Old sealant and backing are removed and the joint is cleaned and primed where required.
Backing rod and sealant
Backing rod is installed at the correct depth and the sealant is applied and tooled.
What to Send for a Quote
- Site address and building type
- Joint location and approximate metres
- Joint width and depth
- Substrate and exposure
- Drawings or specification
- Access requirements
- Expected movement or load
Relevant Projects
Genuine examples of our sealant and mastic work across Liverpool and the North West.
Related Services
Common Questions
Why do expansion joints fail?
Common causes include the wrong sealant for the movement, missing or incorrect backing rod, poor surface preparation and blocked joints that prevent the sealant from flexing.
Can you seal both floor and wall expansion joints?
Yes. We seal movement joints in floors, walls, ceilings and external façades, selecting a sealant matched to the exposure, substrate and expected movement.
Can you work from a specification or drawing?
Yes. For commercial and specification-led work, we can review drawings, schedules and manufacturer details to match the required sealant system.
Should every crack in a wall be filled with sealant?
No. Not every crack is a movement joint. Some cracks indicate structural movement or substrate problems that sealant alone cannot solve. We assess the joint before recommending resealing.
Do you need a backing rod?
It depends on the joint width and depth. Backing rod controls the sealant depth and is required for many movement-joint systems. We install it where the manufacturer or specification calls for it.
Related Services
Industrial & Commercial Sealing
Commercial Mastic
Mastic and sealant work for main contractors, facilities managers and developers across Liverpool and the North West. Glazing perimeters, curtain wall interfaces, cladding joints and expansion joints.
View ServiceWeatherproofing & External Joints
External Sealant
External mastic for window and door perimeters, brick, render, cladding and façade joints across Liverpool. Old material is removed and the cause of any water ingress is assessed before quoting.
View ServiceSite Finishing & Construction Sealant
New Build
Sealant finishing for new-build sites, from plot snagging to phased programmes. We work to drawings and schedules, including Everton Stadium and Mooreside Place.
View ServiceRequest a Commercial Quote
Send the site address, drawings, photos and approximate dimensions and we will come back with a price and programme.
07538 385459