Altra Custom Manufacturing Inc., 620 Supertest Rd Unit 6, North York, ON M3J 2M9
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Expansion Joint Curbs and Control Joint Curbs
Expansion Joint Curbs and Control Joint Curbs
Altra Custom Manufacturing Inc. expansion and control joint curbs are designed to protect critical roof transitions while maintaining system performance. Expansion joints allow for thermal movement, while control joints divide roof areas for maintenance and replacement.
These curbs provide watertight sealing across joint openings and are constructed from heavy-gauge galvanized steel for durability. Internal reinforcements and pressure-treated wood nailers ensure strength and ease of installation.
Available in multiple configurations, these curbs can be customized to suit various roofing systems and project requirements, offering reliable protection and flexibility.
Roof expansion joints are gaps that are designed into a commercial roof to allow for thermal expansion and contraction of a roof system (or roof and terminating wall). Pate Expansion Joint Curbs (EJ) are designed to prevent leaks across the expansion joint opening.
The primary purpose of a roof control joint is to separate roof areas, or divide areas into smaller sections to facilitate maintenance, or future roof replacement. Unlike an expansion joint, it is not intended to accommodate structural movement. Pate Control Joint Curbs (CJ) are designed to prevent leakage across the roof control joint.
Pate Expansion Joint Curbs (EJ) and Control Joint Curbs (CJ) construction:
- Heavy-gauge galvanized steel construction
- Internally reinforced
- Pressure-treated wood nailer
| Product Group | Description |
|---|---|
| EJ-2 | Straight-sided curbs – most common – lightweight fill or tapered insulation |
| EJ-1 | Canted design – 45-degree bend at base – single ply or rubber/PVC roof |
| EJ-5 | Raised-cant design – 45-degree bend and elevated base – insulated roof deck |
| CJ-2 | Straight-sided curbs – most common – lightweight fill or tapered insulation |
| CJ-1 | Canted design – 45-degree bend at base – single ply or rubber/PVC roof |
| CJ-5 | Raised-cant design – 45-degree bend and elevated base – insulated roof deck |
- Fiberglass insulation
- Custom materials available: aluminum and stainless steel
- Special heights and pitches
- Fully mitered and welded corner sections
- Tees or cross sections
- Sloping end sections for termination points