Milcor Energy Efficient Series Roof Hatch

Milcor energy-efficient (EE) roof hatches are designed with enhanced insulation and thermally broken construction to minimize heat transfer, resist condensation, and improve overall building efficiency. Available in galvanized steel or aluminum, these models provide reliable roof access with robust load ratings, EPDM gasketing for weatherproofing, and spring-assisted operation for ease of use. The EE series offers improved thermal performance while retaining the durability and security features found across Milcor’s standard roof hatch line.

Key Features:

• Energy-efficient design with thermally broken cover and curb to reduce heat loss

• Insulated with rigid polyisocyanurate or fiberglass insulation for improved R-value

• EPDM gasket system with fully welded corners for weather-tight construction

• Spring-assisted operation with hold-open arm for safety and ease of use

• Slam latch mechanism with inside/outside handles and padlock hasps

• Rated for 40 psf or 70 psf live load depending on the model

• 3501-501-9EE
  • Opening size: 36 in × 30 in
  • Material: Galvanized steel
  • Curb height: 12 in
  • Insulation: Enhanced rigid insulation (approx. R-20)
  • Live load: 70 psf
  • Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket
• 3501-410-9EE
  • Opening size: 48 in × 48 in
  • Material: Aluminum
  • Curb height: 12 in
  • Insulation: Enhanced rigid insulation (approx. R-20)
  • Live load: 70 psf
  • Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket
• 3501-132-9EE
  • Opening size: 36 in × 30 in
  • Material: Aluminum
  • Curb height: 12 in
  • Insulation: Enhanced rigid insulation (approx. R-20)
  • Live load: 40 psf
  • Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket
• 3501-710-9EE
  • Opening size: 36 in × 36 in
  • Material: Galvanized steel
  • Curb height: 12 in
  • Insulation: Enhanced rigid insulation (approx. R-20)
  • Live load: 40 psf
  • Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket

• Confirm roof opening dimensions match the required model size.
• Place the hatch curb over the opening, square and level to roof deck.
• Secure curb flange with appropriate fasteners and integrate with roof flashing and sealant.
• Attach hinges, springs, slam latch, and hold-open arm as provided.
• Test the cover for smooth spring-assisted operation, latch security, and gasket seal.

Q: What does EE mean in Milcor roof hatches?
A: EE stands for Energy Efficient, meaning these models use thermally broken construction and enhanced insulation to reduce energy loss.

Q: What insulation is included in these models?
A: Each EE model includes rigid insulation, typically polyisocyanurate or fiberglass, providing an approximate R-20 rating.

Q: Are these hatches rated for heavy loads?
A: Yes. Depending on the SKU, these hatches support live load ratings of 40 psf or 70 psf.

Q: Can the EE hatches be padlocked?
A: Yes. Each hatch includes a slam latch with inside and outside handles and padlock hasps.