New NY State Building Code
New York State recently adopted the
National BOCA building codes. This impacts New York State construction in
several ways:
R907.3 - Recovering versus
replacement
New roof
coverings shall not be installed without first removing existing roof coverings
where any of the following conditions occur:
-
Where
the existing roof or roof covering is water-soaked or has deteriorated to the
point that the existing roof or roof covering is not adequate as a base for
additional roofing.
-
Where
the existing roof covering is wood shake, slate, clay, cement or
asbestos-cement tile
-
Where the existing roof has two or
more applications any type of roofing.
Exceptions:
-
Complete and separate roofing systems such as standing-seam metal roof
systems, that are designed to transmit the roof loads directly to the
building's structural system and that do not rely on existing roofs and roof
coverings for support shall not require the removal of existing roof
coverings.
-
Metal
paned, metal shingle, and concrete and clay tile roof coverings shall be
permitted to be installed over existing wood shake roofs when applied in
accordance with Section R907.4
R905.2.7.1 - Ice Protection
In areas
where the average daily temperature in January is 25 degrees F (-4 degrees C) or
less or when Table R301.2(1) criteria so designates, an
ice barrier that consists of at least two layers of underlayment cemented
together or of a self-adhering polymer modified bitumen sheet,
shall be used in lieu of normal underlayment
and extend from the eave's edge to a point at least 24
inches (610 mm>) inside the exterior wall line of the building.
Feet of Ice Backup Protection to
Meet NY State Building Code
(Backup protection is available only
in 3 foot rolls)
