Panels

product-cfrretro

  • Description
  • Advantages & Attributes
  • Allowable Uplift Pressure
CFR Retro-Seam™ insulated metal standing seam roof panel featuring Roof Hugger’s® sub-purlin system combines the technical innovation and product reliability for which we’re known and more critically, provides a long-term, cost effective and energy efficient solution to your roofing challenge. Retro-Seam is a light-gauge structural member, notched to span over the original roof’s ribs or corrugation, which is positioned directly over the building’s framing system. The member is attached to the roof purlins through the bottom flange of the structural member and the existing roof sheet. The new insulated metal standing seam roof is then attached to the new member.

CFR Retro-Seam insulated metal standing seam roof panel with the innovative Roof Hugger sub-purlin system is a smart solution economically because it:

  1. Maximizes thermal performance which translates into measurably lower energy and usage costs;
  2. Eliminates the need and associated cost of removing the existing roof;
  3. Improves the integrity of original design loadings and meets International Building Code (IBC) requirements;
  4. Provides unsurpassed weathertight performance—your building’s integrity is preserved for decades;
  5. Saves an unparalleled 50-70% on labor costs.

2″ CFR 30 Roof Panel

Maximum Allowable Uplift Pressure (PSF)
Span 16Ga. Purlins 14Ga. Purlins
1.50 163.30 176.40
2.00 122.40 132.30
2.50 97.90 105.80
3.00 81.00 88.20
3.50 69.90 75.60
4.00 61.00 66.10
4.50 54.00 58.80
5.00 48.50 51.60

 

2″ CFR 36 Roof Panel

Maximum Allowable Uplift Pressure (PSF)
Span 16Ga. Purlins 14Ga. Purlins
1.50 135.00 160.30
2.00 102.00 120.30
2.50 81.00 96.20
3.00 68.00 80.20
3.50 58.00 68.70
4.00 51.00 60.10
4.50 45.00 53.40
5.00 39.90 46.70

 

2″ CFR 42 Roof Panel

Maximum Allowable Uplift Pressure (PSF)
Span 16Ga. Purlins 14Ga. Purlins
1.50 115.00 136.30
2.00 87.00 102.20
2.50 69.00 81.80
3.00 58.00 68.10
3.50 49.90 58.40
4.00 43.00 51.10
4.50 38.80 45.40
5.00 34.90 39.70

 

Notes:

  1. All panels have a 26ga interior steel skin and a 24ga exterior skin.
  2. All roof panel clips tabs are fabricated from 20ga steel.
  3. All roof panel clip bases are fabricated from 12ga steel.
  4. All interior suport clips are attached to 16ga purlins with (3ea) 1/4-14×3″ #3SD.
  5. All interior support clips are attached to 14ga purlins with (2ea) 1/4-14×3″ #3SD.
  6. All 14ga purlin uplift values are baed on ASTM E1592 uplift testing & NOA 05-0830.04 Evaluation Report.
  7. All 16ga purlin uplift values are based on empirical data derived from Dade Cty NOA 05-0830.04.
  8. All 16ga purlin uplift values are based on a pullout safety factor of 3.0 per AISI 2001.
  9. All 16ga purlin uplift values are based on a clip prying coefficient of 1.6 applied to the interior uplift reaction.
  10. All uplift values are based on a minimum of a 3-span or 4-span condition.
  11. All uplift values are based on a maximum deflection of L/240.