What to include in an expansion joint enquiry
An expansion joint enquiry should state gap, movement, traffic, build-up and location. These fields let suppliers compare technically relevant systems instead of proposing products that merely look similar.
Selection considerations
Give each run a location reference and length. Include the movement requirements with units, the nominal opening and any surveyed variation. State floor-to-floor or floor-to-wall geometry and identify external exposure, waterproofing and fire-resistance requirements.
Attach sections showing finished levels, support edges and available depth. Include corners, intersections and terminations in the quantity schedule. Ask suppliers to list assumptions and provide the proposed BULDX code for each run. Comparing this information line by line is more useful than comparing only the price per metre of the straight profile.
Before you specify or order
- Include section drawings
- List transition quantities
- Require explicit technical assumptions
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-EJ-UF-1-100 · 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-EJ-UF-1-100100 mm Under-Floor Expansion Joint - Type 1Under-Floor Joints |
|
BDX-EJ-PK-AL-100100 mm Aluminium-EPDM Hump JointHeavy-Duty & Parking Joints |
|
BDX-EJ-UF-2-100100 mm Under-Floor Expansion Joint - Type 2Under-Floor Joints |
|
Common question
What information should come before product selection?
The engineer's gap and movement requirements, followed by the traffic and installation constraints.
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.