What Is a Knockdown Roof Curb?
A knockdown curb is a rooftop curb delivered in component parts—flat-packed for efficient shipping and storage. Once on site, it can be field-assembled using basic tools, typically in minutes.
Because the curb is assembled on the roof, technicians have more flexibility to maneuver components through tight access spaces, up ladders, or onto rooftops where large welded curbs may be difficult to transport.
How Knockdown Curbs Are Assembled
MicroMetl offers two primary assembly styles:
1. Bracketed Assembly
- Used on larger knockdown curbs
- Includes brackets, nuts, and bolts
- Adds structural rigidity for larger footprints
2. MicroLock™ System (Most Common)
- A proprietary MicroMetl tab-and-slot design
- Requires only a rubber mallet
- Pieces snap together with light pressure
- No additional hardware needed
This tool-free MicroLock system makes field installation quick and predictable—even for techs with limited curb-assembly experience.
Critical Installation Step: Square the Curb
Before roofing or sealing the curb into place:
- Confirm all four corners are square
- Measure diagonally corner to corner
- Dimensions must match for a true square
A properly squared curb ensures the rooftop unit seats accurately and duct openings align as intended.
Size, Height & Customization Options
While 14 inches is the most common curb height, MicroMetl manufactures knockdown curbs in:
- Multiple standard heights
- Custom heights
- Custom pitch adjustments
- Any pitch requirement to match the roof structure
This flexibility ensures precise fitment without field modification.
Insulation Options
All MicroMetl deck pans are:
- Fully insulated on the back as standard
If full-perimeter curb insulation is required, it can be added upon request. When the option is not shown on the website, customer support can provide pricing and availability.
Why Choose a Knockdown Curb?
- Lower upfront cost
- Reduced freight expense
- Easier handling on job sites
- Minimal storage footprint
- Fast assembly
- Ideal for stocking and inventory
Knockdown curbs are a reliable, economical choice for contractors needing flexibility and performance without the added expense or logistics of welded curbs.
