Alternating Tread Stairs
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Alternating Tread Crossover Stair
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Rooftop Applications

Pre-engineered, custom, IBC-Compliant industrial equipment work platforms, parapet crossovers, and commercial egress stairs.

Roof Top Alternating Tread Stair Parapet Corssover

Key Rooftop Stair Application Benefits

Lapeyre Stair has worked with commercial architects and contractors to provide heavy duty, IBC-compliant, equipment platforms, industrial access and commercial egress stairs, alternating tread stairs, and crossover systems for the past 40 years.
Flexible Components

Our products incorporate interchangeable components that are pre-engineered to comply with applicable OSHA and IBC standards.

IBC Compliance Experts

From equipment platforms and roof-top access to commercial egress and crossover systems, our team of stairs experts builds to your state's IBC standards.

Architect Support

Our designers, engineers, and stair experts work hand in hand to produce and deliver drawings within 24 hours.

On Site Assembly

Our knock-down design ships flat, arrives ready to assemble, and requires no welding or expensive equipment for installation.

Photos of Rooftop Applications Installations

Rooftop Stair Applications Technical Specs

Alternating Tread Stair DimensionsHeights: 24" - 240"
Width: 23.5"
Industrial Stair DimensionsHeights: 24" - 240"
Width: 24" - 48"
Commercial Stair DimensionsHeights: 24" - 144"
Width: 36" - 60"
ApplicationsParapet Crossovers, Roof Hatch, Equipment Access, Roof-to-roof access , Pipe Crossovers, Stair Towers, HVAC Platforms, Generator Platforms, Cooling Tower Access
MaterialsCarbon Steel
Aluminum (alternating tread stair only)
Stainless Steel (alternating tread stair only)
Recommended FinishesFor carbon steel, we recommend a galvanized finish for outdoor applications.
Natural (aluminum or stainless steel)
IBC Industrial
IBC Commercial
International Mechanical Code
TreadsDiamond Plate
Grip Strut
Bar Grating
Concrete Pan
System ConfigurationsStandard Crossover Stairs
"U" Shaped Crossover Stairs
"L" Shaped Crossover Stairs
"Z" Shaped Crossover Stairs
Straight Egress
Capacity1,000 lbs
Lapeyre Stair Team

Customer Care Guarantee

With over 600 years of combined knowledge, our in-house designers, engineers, and customer service team will jump on the phone or set up a virtual call when needed.

Rooftop Application Resources

Rooftop Solutions for Any Size

From commercial rooftop HVAC compressor and generator platforms to galvanized crossover stairs to mange pipe runs, our designers and engineers can create a custom solution that meets your needs.

Crossover Dimensions