A ventilating and heat dissipating assembly for a roof includes hollow bricks, first corrugated plates and second corrugate plates. Each first corrugated plate spans a gap between two pairs of the hollow bricks that are spaced apart along intersecting first and second directions. Each second corrugated plate spans a gap formed between two of the hollow bricks spaced apart in the first direction and a gap between two of the first corrugated plates spaced apart in the second direction.

A hollow brick includes a bottom wall, two side walls projecting from the bottom wall, a plurality of intermediate walls projecting from the bottom wall between the side walls, a top wall opposite to the bottom wall and connecting the side walls and the intermediate walls, and a plurality of ventilation holes bounded by the bottom wall, the side walls, the intermediate walls and the top wall. The bottom wall has a plurality of foot portions projecting downwardly and spaced apart from each other. A bottom groove is formed between two adjacent ones of the foot portions.

A photovoltaic module installation roof renewal method for installing a photovoltaic module on a roof of a building constructed with a roof frame having a repetitively formed crest and root includes the steps of: interposing an insulator at the roots of the roof frame; producing a photovoltaic module installation roof panel in a length corresponding to the length of the roof at a roof renewal site by using a portable roll foaming machine to transport the photovoltaic module installation roof panel onto the roof; installing the photovoltaic module installation roof panel on the roof frame at which the insulator is interposed; fastening a bracket for installing a photovoltaic module on the photovoltaic module installation roof panel; and installing the photovoltaic module on the bracket.

A subframe configuration for a retrofit roof includes a subframe connected to the upper surface of a rib on an existing roof. The subframe is also connected to the valley/purlin of the existing roof. The connection can be a mechanical interference connection or one that is formed by a mechanical connector. The subframe of the disclosure includes a rib flange that extends from the bottom of the lip. The rib flange is disposed substantially parallel to the base of the subframe. When installed, a connector extends through the rib flange into a rib of the existing roof. Rib flange can be continuous or provided only at each or just some of the ribs.

A subframe configuration for a retrofit roof includes a subframe connected to the upper surface of a rib on an existing roof. The subframe is also connected to the valley/purlin of the existing roof. The connection can be a mechanical interference connection or one that is formed by a mechanical connector. The subframe of the disclosure includes a rib flange that extends from the bottom of the lip. The rib flange is disposed substantially parallel to the base of the subframe. When installed, a connector extends through the rib flange into a rib of the existing roof. Rib flange can be continuous or provided only at each or just some of the ribs.

Retrofitting a horizontal building roof having a pre-existing, composite-strength concrete roof having a corrugated steel deck with concrete poured over the deck top. Replacing the pre-existing roof with a dry-installed composite-strength roof having a rigid sheet installed over a corrugated steel deck, the rigid sheet attached to the deck by mechanical fasteners extending through the rigid sheet and the upper ribs of the corrugated deck. The newly installed roof restrains the upper ribs against lateral distortion under loading, thus forcing the corrugated deck to maintain shape and operate to composite capacities in excess of predictable flexural load capabilities of its components considered alone.

The present invention concerns an insulating roof support assembly for a roof structure comprising a plurality roof elongated rafters spaced apart in a predetermined distance with insulation boards therebetween, wherein elongated mineral wool fiber insulation elements are provided on the top of each of the elongated roof rafters and elongated wooden elements on top of said insulation elements with at least one impermeable membrane between at least two neighbouring insulation elements sandwiched between the wooden elements and the insulation elements.

Roofing systems are provided. A roofing system comprises a roofing substrate. The roofing system comprises a first roofing membrane adhered to the roofing substrate. The roofing system comprises a second roofing membrane. The second roofing membrane comprises a first layer and a fleece layer. The first layer of the second roofing membrane is located between the fleece layer and the first roofing membrane. The roofing system comprises a liquid applied flashing located on the fleece layer of the second roofing membrane. Related methods are also provided.