Static structures (e.g. – buildings) – Disparate sheet lamina between exposed surfaces of wall,...
Patent
1996-03-11
1998-08-04
Wood, Wynn E.
Static structures (e.g., buildings)
Disparate sheet lamina between exposed surfaces of wall,...
52310, 5230912, 527831, 5278319, 523021, E04B 116
Patent
active
057876681
ABSTRACT:
A composite roofing system in which a layer of polystyrene or polyurethane foam insulation board is encased in layers of lightweight insulating concrete and the surface of the foam insulation board is roughened to strengthen the interfacial bond with the surrounding layers of concrete and provide increased resistance to wind uplift, seismic activity, and degradation of the roofing system caused by vertical loads. Moisture which might otherwise become entrapped in the roofing system by the impermeable insulation board is ventilated out of the system by a combination of openings through the insulation board which permit the migration of moisture between the layers of concrete, and a plurality of lateral slots cut in the insulation board to permit further migration of moisture out of the system. Surface roughening of the foam insulation board is accomplished by forming a plurality of typically conical recesses in one or both surfaces of the insulation board which then become filled with concrete when the system is built up using fluid concrete at the construction site. The recesses are formed in the insulation board with a single cylindrical roller with protrusions on the surface thereof, or both surfaces of the insulation board may be simultaneously treated with a dual opposed roller configuration. After filling and setting in the recesses, the insulating concrete enhances the interfacial bond, increasing resistance to both transverse forces caused by wind uplift and horizontal shear forces caused by downward loading on the roof system or by seismic activity.
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Carkner Philip M.
Corley Todd L.
Dudley Hubert T.
Kersey Timothy L.
O'Neill, Esq. Kirt S.
Siplast, Inc.
Wood Wynn E.
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