When selecting rooftop curbs for an installation or replacement project, contractors are often faced with the same question:
“Is the extra cost of a welded curb really worth it?”
The answer depends on jobsite conditions, timeline, and installation priorities. Let’s break down the pros, cons, and real-world considerations so you can make the most informed choice.
The Case for Welded Curbs
Welded rooftop curbs arrive fully assembled from the factory. This offers several advantages:
- No field assembly required
- No need to square the curb—factory alignment ensures proper dimensions
- Supports, deck pans, and structural reinforcements are pre-installed
- Eliminates guesswork and reduces installation time
In fast-paced environments—or when labor availability is tight—this built-in efficiency is a major advantage.
Cost Comparison: Welded vs. Knockdown
At first glance, welded curbs seem more expensive due to:
- Higher upfront product cost
- More expensive shipping due to size and weight
- Potential crane requirements
But here’s the balancing factor:
- Knockdown curbs require assembly time.
- That assembly cost = additional labor hours
- Labor hours → higher job cost
In many cases, the total cost of labor + assembly on a knockdown curb offsets the savings on the product itself.
With proper planning—especially when multiple crane lifts can be scheduled together—your cost difference often becomes minimal.
Practical Jobsite Tips
To help manage cost and logistics:
- Use a scissor lift when the curb size allows—cheaper than a crane
- Plan ahead and coordinate crane time with other jobs to reduce costs
- Verify roof access limitations early in the project
- Check rooftop layout for obstacles that may affect positioning
A little planning goes a long way toward minimizing the cost associated with large welded components.
What You Get With a Welded MicroMetl Curb
MicroMetl welded rooftop curbs include features designed for durability and ease of installation:
- Standard 14-inch height (other standard and custom heights available)
- Custom pitch fabrication when needed
- Full perimeter wood nailer for roofing attachment and sealing
- Fully insulated deck pans for thermal performance
- Options for full-perimeter insulation on request
- Precise factory assembly for reliable fit and finish
If you don’t see the configuration you need on the website, MicroMetl Customer Support can help with custom dimensions and insulation options.
Verdict: Should You Choose a Welded Curb?
Choose welded when:
- You want the fastest, most reliable installation
- Labor availability is limited
- You want guaranteed factory accuracy
- You’re working under tight deadlines
Choose knockdown when:
- Access to the roof is restricted
- Freight cost is a major concern
- You prefer compact packaging for transport
In most cases, the cost difference evens out, and welded curbs offer significant advantages in convenience, speed, and installation quality.
