HomeMy WebLinkAboutB12-0402 Pages from VersiFleece Code Approval GuideVersiFleece Codes – 2/2012 1
Underwriters Laboratories Approvals
VersiFleece Adhered Roofing Systems
Membrane Type:
VersiWeld VersiFleece TPO 100, 115 or 135 membrane (white, tan or gray)
UL Class “A”
Membrane adhered with DASH/FAST Adhesive *
Deck Type
Insulation (1)(2) (UL Classified)
Thickness
Maximum Slope
VersiWeld
Non-Combustible and Combustible (For combustible
decks, gypsum wallboard must be installed beneath the
insulation listed) (3)
Versico Recovery Board 1/2”-3”
1-1/2” Versico Recovery Board / Polyisocyanurate
Versico Recovery Board / Polystyrene **
1/2” Min./Any
OSB APA Rated / Polyisocyanurate OSB APA Rated / Polystyrene 7/16” Min./Any
Versico MP-H Polyiso or SecurShield Any 1/2” Versico Insulfoam SP (5) 1” Min.
Structural Concrete, Gypsum or Approved Lightweight Concrete (New or Tearoff)
None N/A 3”
Combustible DensDeck Prime 1/4” Min.
3” DensDeck Prime or Securock / Polyisocyanurate 1/4” Min/Any DensDeck Prime or Securock / Polystyrene
Versico SecurShield Polyiso(4) 3” Min. 1/2” Versico Polyiso MP-H over 2-layers Versico FR Base Sheet 1S Any/2-layers
* As an option to adhering the VersiWeld VersiFleece TPO Membrane with DASH/FAST Adhesive, the membrane can be loose-laid
and mechanically fastened to the roof deck in accordance with Versico’s VersiFleece Specification.
** Assembly not permitted on combustible decks, even with gypsum board underneath. DensDeck or DensDeck Prime must be
installed over polystyrene as identified in combustible deck listing. Notes:
(1) When multiple insulation layers are listed (i.e. Recovery Board/Polyisocyanurate), the insulation listed first (Recovery Board) is
directly under the membrane. (2) Insulation may be mechanically fastened or attached with DASH/FAST Adhesive.
(3) Minimum 1/2” thick gypsum wallboard can be classified or unclassified with a minimum weight of 1.84 pounds per square foot. 1/4” thick Georgia Pacific DensDeck or Sound Deadening Board with a minimum weight of 1.09 pounds per square foot may be substituted for 1/2” thick gypsum wallboard beneath the insulation.
On Reroof/No Tearoff projects, where the existing roof is Class A rated, the gypsum board may be eliminated. Existing roofs that are Class B or C rated will require the use of gypsum board to achieve a Class A rating, otherwise, the new roofing system will retain
the existing UL rating. (4) Insulation joints (bottom layer) must be staggered a minimum of 6 inches from joints in wood deck. (5) Assembly not permitted on combustible decks, even with gypsum board underneath.