SEALTECH INDUSTRIES
Expansion & Movement Joint Sealing
Engineered sealing systems designed to accommodate structural movement while maintaining long-term waterproof integrity.
Service Area: South-East Queensland and Northern NSW (Brisbane, Gold Coast, Ipswich, Moreton Bay, Redland City and surrounding regions)
Why Professional Movement Joint Sealing Matters
Movement joints are dynamic — not static. They continuously open and close as structures respond to environmental and load-related stress.
The installed sealant must:
- Stretch and compress without tearing
- Maintain adhesion to joint sidewalls
- Resist UV exposure and weathering
- Withstand traffic loading where required
- Remain watertight over time
Improper installation or incorrect sealant selection results in premature failure. SealTech Industries specifies commercial-grade polyurethane and silicone sealants selected according to movement capability, exposure classification and traffic requirements.
Proper installation ensures the seal performs under real-world conditions — not just at application.
Application and Sectors
Our concrete expansion joint sealing services are delivered across:
Commercial office developments
Retail centres & shopping complexes
Multi-level car parks
Warehousing & logistics facilities
Civil infrastructure (bridges, culverts, hardstand areas)
Healthcare and educational facilities
Industrial processing facilities
Fuel forecourts
Any structure exposed to structural movement or environmental stress requires professionally installed movement joint sealing
to maintain waterproof integrity and long-term durability.
Why Choose SealTech Industries?
Dust-Controlled Preparation
All cutting and preparation works are undertaken using vacuum-shrouded equipment in accordance with Queensland WHS silica dust regulations.
SUBTRATE EXPERTISE
We understand the behaviour of aged concrete, façade interfaces, asphalt-to-concrete transitions and metal expansion assemblies.
SPECIFICATION-BASED INSTALLATION
All works are completed in accordance with manufacturer technical data sheets and project documentation.
WARRANTY-ALIGNED WORKMANSHIP
Installations follow manufacturer-approved methodologies to maintain product performance integrity
COMPLIANCES
Completed in accordance with AS 3600, AS 4654 (where applicable), project specifications and manufacturer technical data sheets.
The Technical Edge: Our 5-Step Process
We don’t simply “fill a gap.” We engineer a movement-accommodating sealing system based on joint design and exposure classification.
Step 1: Assessment & Specification
All cutting and preparation works are undertaken using vacuum-shrouded equipment in accordance with Queensland WHS silica dust regulations.
- Movement capability (% elongation)
- Modulus rating (high or low)
- UV exposure
- Chemical exposure (where applicable)
High-modulus polyurethane is typically used in trafficable areas.
Low-modulus silicone is often specified for façade and high-movement vertical joints
Step 2: Precision Saw-Cutting & Joint Preparation
Using dust-controlled cutting equipment, we refine joint geometry and remove deteriorated material. Correct depth-to-width ratio is critical.
As a general guide:
- 2:1 width-to-depth ratio for joints up to 12mm
- 1:1 ratio for wider joints
Step 3: Backer Rod Installation
To prevent three-sided adhesion and allow proper movement:
We install closed-cell polyethylene backer rod to:
- Act as a bond breaker
- Control sealant depth
- Support proper tooling
Step 4: High-Performance Sealant Application
Sealant is installed using professional bulk application systems to ensure void-free placement.
- Achieve full sidewall adhesion
- Create a concave or flush profile
- Optimise water shedding and durability
Step 5: Professional Finishing & Inspection
Final profile is determined by traffic requirements:
- Flush finish for trafficable surfaces
- Slight recess for façade and aesthetic joints
Where Every Seal Tells the Story
our projects
All concrete expansion joint repair and sealing work is carried out in accordance with project documentation, manufacturer technical data, and relevant Australian Standards.
SealTech Industries provides technical evaluation and specification-based recommendations aligned to commercial performance standards.
FREQUENTLY ASKED QUESTIONS?
How long does concrete expansion joint sealing last?
Is movement joint sealing required for all buildings?
Most modern commercial and civil structures incorporate movement joints to manage thermal and structural movement. Proper sealing is essential to maintain waterproof integrity and prevent long-term deterioration.
What are the common signs that indicate concrete expansion joint repair or resealing is required?
Concrete expansion joints play a critical role in allowing structures to accommodate movement caused by temperature changes, load variations, and natural settling. Over time, joint sealants can deteriorate due to weather exposure, traffic, and general wear. Understanding when concrete expansion joint repair or resealing is required helps maintain the integrity, safety, and longevity of the structure.
- Cracked or brittle sealant
- Adhesion failure at joint edges
- Visible gaps
- Water ingress near slabs or façades
- Rust staining or concrete spalling
Early intervention prevents costly remedial concrete joint sealing.
What is the average cost of expansion joint leak repair?
It varies by “linear foot,” but expect higher costs for joints that require “nosing” (edge) reconstruction or overhead work in parking garages.
What are the signs that industrial expansion joints require repair?
Common signs that industrial expansion joint leak repair may be required include cracked or missing sealant, water leakage, joint widening, spalling concrete edges, or visible debris and vegetation within the joint. These issues can compromise structural integrity and should be addressed promptly.
When should concrete expansion joint sealing be completed in new construction?
Movement joint sealing should be completed after concrete curing and surface preparation in accordance with manufacturer guidelines. Premature installation may result in adhesion failure.
Is expansion joint maintenance necessary for building structures?
What area do you service?
Brisbane
- Ascot
- Hamilton
- New Farm
- Teneriffe
- Paddington
- Bulimba
- Bardon
- Wilston
- Highgate Hill
- Indooroopilly
Gold Coast
- Mermaid Beach
- Broadbeach Waters
- Burleigh Heads
- Hope Island
- Sanctuary Cove
- Currumbin
- Palm Beach
- Varsity Lakes
- Robina
- Surfers Paradise
Ipswich
- Springfield Lakes
- Brookwater
- Ripley
- Brassall
- Yamanto
- Redbank Plains
- Goodna
- Bellbird Park
- Augustine Heights
- Raceview
Logan
- Shailer Park
- Daisy Hill
- Cornubia
- Springwood
- Rochedale South
- Loganholme
- Beenleigh
- Waterford
- Meadowbrook
- Park Ridge
Redland City
- Wellington Point
- Cleveland
- Ormiston
- Raby Bay
- Birkdale
- Thornlands
- Capalaba
- Victoria Point
- Redland Bay
- Mount Cotton
Is remedial concrete joint sealing disruptive to building operations?
Can you perform industrial expansion joint repair on wet concrete?
Most standard epoxies will fail. However, specialized “moisture-tolerant” primers can allow for repairs on damp (but not saturated) substrates.
Why is industrial expansion joint repair important for facilities?
Industrial expansion joint repair helps maintain the structural integrity of floors, walls, and external concrete areas in industrial facilities. Properly functioning joints prevent water intrusion, reduce the risk of concrete damage, and support the long-term durability and safety of the structure.