Tenders are invited for remove existing epdm associated flashings at roof penetrations,(except high walls) the underlying epdm roof assembly is to remain in place; repair any damaged and/or loose roof insulation; build or rebuild all curbs in order to achieve the required 10" base flashing height; remove all roof vent penetrations on vertical surfaces, and store for re-installation; mechanically attach a nominal (1/4" thick densdeck 4x8 boards to meet fm i-90 wind uplift
requirements; 1 fastener per every 2 sf; over existing 10" iso insulation.
Both products are ANSI/SPRI/FM 4435/ES-1 tested to comply with the International Building Code, along with FM approved for wind uplift
With that amount, homeowners can brace garage doors, install plywood shutters, and seal the roof deck to reduce wind uplift
Protected membrane systems are vulnerable at the support board attachment to the structural deck, according to the RCI report Wind Uplift
Resistance Evaluation of Commercial Roofs With and Without Add-ons.
is caused by the introduction of wind pressure underneath the roof deck where it can cause the roof assembly to pull away from the rafters literally blowing, or tearing, the roof off the building.
We're used to testing wind uplift
with typical rectangular buildings, but not odd-shaped structures like a stadium," Ducharme says.
In each case, FM Approvals testing must be done with simulated wind uplift
pressure with the module attached to a test frame using a pleated air bag and with tensile loading of the fasteners/clips.
Their major function today, aside from confusing architects, is to protect the edge of roof assemblies from wind uplift
Follow the manufacturer's instructions carefully, as there are some restrictions on blind-nailing wider planks to prevent wind uplift
The chord bracing prevents buckling of the trusses due to wind uplift
In reality, the wind uplift
pressure is dynamic, and the response of the roofing structure is dynamic as well.
of resistance to wind uplift
, connecting interior floors and partitions.