The
Truth About "Conventional" Type 6 Felts.
Conventional ASTM
Type6 felts have long been
a “double-edged sword” for roofing contractors and
specifiers...
What’s Good...
• Heavyweight mat
• More asphalt protection
• Stronger and more dimensionally stable
than type 4 felts
• Long-term manufacturers’ guarantees available
The Problems...
• Stiffer than type 4 felts
• More difficult to install
• Can cause bridging and voids (see illustration)
• Labor-intensive
As a result, many contractors and specifiers have avoided
conventional Type 6 felts except when the manufacturer
required them for a long-term guarantee. |
|
| The
FlexPly6 Breakthrough
Using revolutionary technology, GAF
Materials Corporation Engineers developed FlexPly6, the
industry’s first
flexible Type6
felt. This patent pending technology allows asphalt
coating to be applied to a special, proprietary
fiberglass mat without
sacrificing the tensile strength or porosity of
the finished felt
. The result is a premium ply felt with both flexibility
and strength—your best choice! |
Key Product Features
• Revolutionary
Flexible Design—
rolls out flatter, conforms
easier, minimizes the risk of damaging
voids during installation.
• Maximum
Strength— to meet
ASTM D2178, Type 6
• Improved
Pliability— ensures
improved conformance to
underlying substrates
• Maximum
Porosity—enhances
asphalt absorption and reduces installation time
• Superior
Wind Resistance— selected
systems have FMRC Class 1-180 rating
• Proprietary
Micro-Weave™Core—
provides the superior tensile strength
and the dimensional stability of a Type 6 felt, for greater
resistance to splitting and cracking.
• Highest
Fire Rating— for
use in UL Class A rated assemblies
• Versatile—can
be used in all climatic zones
• Quality
Installation— enhanced
asphalt absorption and substrate conformance help to provide for
long-lasting system performance up to 20 years.
• Key
System Component— in
GAF CompositeRoof™ specifications |
Commercial -
