Construction, isolation and crack-control slab joints
Identify the joint's function before comparing industrial floor profiles. Construction, isolation and crack-control joints address different details within the slab design.

Selection considerations
Use the engineer's joint layout to locate pour boundaries, restrained elements and movement zones. An isolation joint beside a column should not be substituted with a crack-control product simply because both fit the slab depth. Keep the designer's terminology in the schedule.
The BULDX range includes separate isolation, repair and crack-control families. Compare height, geometry and fixing for the stated application. Coordinate the reinforcement and load-transfer detail rather than inferring it from the profile image. Product selection supports the slab design; it does not determine joint spacing or replace the structural layout.
Before you specify or order
- Label the intended joint function
- Use the approved slab layout
- Coordinate reinforcement and load transfer
Relevant BULDX catalogue examples
These records illustrate the product types discussed. Compare the full specifications before selecting; listing here does not establish project suitability or make the items interchangeable.

BDX-SJ-STD-115 · Product geometry from the catalogue; a family illustration may be shared by variants. Consult the selected technical documents for dimensions and the approved fixing detail.| Product and code | Selected catalogue fields |
|---|---|
BDX-SJ-STD-115115 mm Standard Slab JointStandard Crack-Control Joints |
|
BDX-SJ-ISO-185185 mm Column Isolation JointIsolation Joints |
|
BDX-SJ-ISO-235235 mm Column Isolation JointIsolation Joints |
|
Common question
Are all slab joints interchangeable?
No. Their function, supporting detail and relationship to the slab design may differ.
References and scope
Product fields are from the BULDX catalogue. Confirm the current selected drawing, supporting performance documents and approved project detail before ordering. External references, where listed, provide background guidance and do not certify these products.