Page 1
1a Cover Board with SECUROCK® Glass-Mat Roof Board
Roof Board
Applications
There are four basic components in a low-slope commercial roof assembly:
– A structural deck and joists, which can be formed of steel, wood or concrete
– Insulation, including polyisocyanurate (ISO), extruded polystyrene (XPS) or
expanded polystyrene (EPS)
– Roof cover board installed between the insulation and the roofing membrane
to protect the insulation and support the membrane, improving fire protection,
traffic and hail resistance, and wind uplift performance
– A membrane or membrane system, which can be built-up roofing
(BUR), single-ply or modified bitumen
The following are for illustration purposes only. Securock® High-Performance roof boards are engineered to perform within a properly designed roof system.
The use of S
specific instructions on the application of their products to S
ecurock High-Performance roof boards as a roofing component is the responsibility of the design professional. Consult roofing manufacturers for
ecurock High-Performance roof boards.
Cover Board
Securock High-Performance roof board is placed directly below the roofing membrane, providing primary support for the membrane and protecting the underlying insulation layer from
damage during installation and for the service life of the roof. Cover boards are used for impact protection for insulation boards (foot traffic, hail, etc.), to protect insulation from EPDM heat
transfer, as a surface to which asphalt can be mopped, and as a fire barrier for external fire.
Securock® Gypsum-Fiber roof board
recommended for fully adhered membrane.
membrane
®
S
ECUROCK
Gypsum-Fiber Roof Board
insulation
steel deck
steel joist
Roof Recover Board
Securock High-Performance roof board is placed over the existing membrane surface, where it functions as a separator and a support layer between the old roof and the new roofing
membrane. Roof recover boards provide a flat substrate for new roofs and have all of the benefits of a cover board.
®
ecurock
Gypsum-Fiber roof board
S
recommended for fully adhered membrane.
membrane
SECUROCK® Gypsum-Fiber Roof Board
existing roof system
®
S
ecurock
Glass-Mat roof board recommended
for mechanically attached membrane.
fastener
membrane
®
S
ECUROCK
Glass-Mat Roof Board
insulation
steel deck
steel joist
®
ecurock
Glass-Mat roof board recommended
S
for mechanically attached membrane.
fastener
membrane
®
ECUROCK
Glass-Mat Roof Board
S
existing roof system
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Hot Asphalt Substrate (Hot Mop)
Securock® Gypsum-Fiber roof board can be mechanically fastened, bonded with mastic or adhesives or hot mopped to foam insulation. All hot-applied roofing systems can then be mopped
directly onto the unprimed roof board without concern for blistering or delamination. Securock Gypsum-Fiber is your best option for hot mopping.
Securock® Gypsum-Fiber roof board only.
membrane
asphalt
®
S
ECUROCK
Gypsum-Fiber Roof Board
asphalt
insulation
®
S
ECUROCK
Gypsum-Fiber Roof Board
steel deck
steel joist
Substrate for Vapor Retarders
Securock High-Performance roof board is placed over the roof deck to provide support for the vapor barrier. The membrane may be loose laid; attached with cold mastics, hot asphalt or
adhesives; or mechanically fastened, depending on the roof assembly. The roof board is used as a substrate for retarder to adhere to in order to reduce condensation.
®
Securock® Gypsum-Fiber roof board
recommended for fully adhered membrane.
membrane
®
ECUROCK
Gypsum-Fiber Roof Board
S
insulation
vapor retarder
®
ECUROCK
Gypsum-Fiber Roof Board
S
steel deck
steel joist
S
ecurock
Glass-Mat roof board recommended
for mechanically attached membrane.
fastener
membrane
®
ECUROCK
Glass-Mat Roof Board
S
insulation
vapor retarder
®
S
ECUROCK
Glass-Mat Roof Board
steel deck
steel joist
Metal or Tile Roof Thermal Barrier
Securock High-Performance roof board provides a thermal barrier in conjunction with a standing-seam metal or tile roofing system. It also provides noise reduction and hail resistance.
Thermal barriers reduce thermal "shock" and slow heat escape from building and act as a fire barrier for internal fire.
®
ecurock
Gypsum-Fiber roof board
S
recommended for fully adhered membrane.
metal roofing
vapor retarder
®
ECUROCK
Gypsum-Fiber Roof Board
S
insulation
SECUROCK® Gypsum-Fiber Roof Board
steel deck
steel joist
®
ecurock
Glass-Mat roof board recommended
S
for mechanically attached membrane.
metal roofing
vapor retarder
®
ECUROCK
Glass-Mat Roof Board
S
insulation
®
S
ECUROCK
Glass-Mat Roof Board
steel deck
steel joist
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Thermal Barrier
Secur ock High-Performance roof board provides a thermal barrier installed directly to metal deck for both expanded and extruded polystyrene insulation. Thermal barriers reduce thermal
"shock" and slow heat escape from building and act as a fire barrier for internal fire.
®
ecurock
Securock® Gypsum-Fiber roof board
recommended for fully adhered membrane.
membrane
®
S
ECUROCK
Gypsum-Fiber Roof Board
insulation
®
ECUROCK
Gypsum-Fiber Roof Board
S
steel deck
steel joist
Glass-Mat roof board recommended
S
for mechanically attached membrane.
fastener
membrane
®
S
ECUROCK
Glass-Mat Roof Board
insulation
®
ECUROCK
Glass-Mat Roof Board
S
steel deck
steel joist
Fire Barrier Underlayment
Securock High-Performance roof board is used as a barrier board underlayment below optional rigid foam insulation on a combustible deck to achieve a Class A, B or C fire-resistance
rating. See the UL Building Materials Directory for more information.
®
Securock® Gypsum-Fiber roof board
recommended for fully adhered membrane.
membrane
®
S
ECUROCK
Gypsum-Fiber Roof Board
insulation
®
S
ECUROCK
Gypsum-Fiber Roof Board
wood deck
wood joist
S
ecurock
Glass-Mat roof board recommended
for mechanically attached membrane.
fastener
membrane
®
S
ECUROCK
Glass-Mat Roof Board
insulation
®
S
ECUROCK
Glass-Mat Roof Board
wood deck
wood joist
Parapet Wall Substrate
Securock High-Performance roof board is fastened to wood or metal framing along the parapet wall for roofing membrane flashing support.
®
ecurock
Gypsum-Fiber roof board
S
recommended for fully adhered membrane.
wall cap
parapet wall framing
exterior wall finish
adhered flashing membrane
®
ECUROCK
Gypsum-Fiber Roof Board
S
sleeper
®
ECUROCK
Gypsum-Fiber Roof Board
S
insulation
structural deck
Manufactured by
United States Gypsum Company
550 West Adams Street
800 USG.4YOU (874.4968)
usg.com/securock
Securock® Glass-Mat roof board recommended
for mechanically attached membrane.
wall cap
parapet wall framing
exterior wall finish
flashing membrane
®
S
ECUROCK
Glass-Mat Roof Board
sleeper
fastener
®
ECUROCK
Glass-Mat Roof Board
S
insulation
structural deck
The following trademarks used herein are
owned by United States Gypsum Company:
ecurock, USG, USG in stylized letters.
S
Chicago, IL 60661
RF44/rev. 11-11
© 2011 United States Gypsum Company
Printed in U.S.A.
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