HomeMy WebLinkAboutFile Documents.427 Rio Grande Pl.0016.2019 (60).ACBK
Isolatek International
41 Furnace Street
Stanhope, NJ 07874
Telephone: 973.347.1200 Corporate Headquarters
www.isolatek.com
May 30, 2019
Mr. Mark Taschuk
Swanson & Youngdale
6565 West 23rd Street
Minneapolis, MN 55426
Re: University of Minnesota East Bank Renovation and Addition
Dear Mr. Taschuk:
This is in regard to the application of CAFCO Spray Applied Fire Resistive Materials (SFRMs) on the
above referenced project.
It is our understanding that, at times, polyurethane foam insulations are requested to be used over
the surface of CAFCO SFRMs applied to steel deck, beam and column substrates.
The BXUV.GuideInfo – Fire-resistance Ratings - ANSI/UL 263 portion of the UL Fire Resistance
Directory indicates the following:
“Unless otherwise noted in the individual designs or certifications, the application of sprayed
polyurethane foam or other insulation over sprayed fire-resistive materials (SFRM) or
intumescent fire-resistive materials (IFRM) coatings has not been investigated.”
Please be advised that Isolatek International does not have any experience with the compatibility of
CAFCO SFRMs with a topcoat of polyurethane foam insulations; however we have been informed
that this application has been successfully installed on past projects.
It is suggested that the polyurethane foam insulation being used be classified as Class I or Class II
rated when evaluated in accordance with ANSI/UL 723 (ASTM E84 and NFPA 255) in accordance
with the Model Building Code. Furthermore, the application must be controlled so that the coating
does not influence the bond between the SFRM and the steel substrate. The SFRM must be fully
cured prior to the application of the polyurethane foam over the surface of the SFRM. Refer to the
polyurethane foam manufacturer regarding fire characteristics of the foam and for any further
information concerning historical adhesion characteristics to Applied Fireproofing products.
Additionally, if required, all Model Building Code requirements for the use of a Thermal or Ignition
Barrier must be followed.
It is also suggested that a mock-up sample of this application be conducted to determine if the
adhesion characteristics of the coating over the CAFCO SFRM.
Isolatek International shall not be liable for any special, indirect, or consequential damages arising
from the installation of the polyurethane foams over the surface of SFRMs. Authorities having
jurisdiction must be consulted in all cases where approval is to be obtained for all thicknesses that fall
outside the scope of UL or design guidelines.
REF: 04BC9150
06/24/2019
Mr. Mark Taschuk
May 30, 2019
Page 2
We trust this information is of assistance. Should you have any questions, please feel free to contact
the undersigned at 973-347-1200.
Sincerely,
Robert Casteel
Applications & Intumescent Technical Specialist
CAFCO® Fire Protection Products
BC
Cc: R. Sneegas - Isolatek International
06/24/2019