A protective coating for application to steel reinforced concrete structures, comprising a liquid composition of elastomeric polymeric material having electrically conductive particulate matter evenly dispersed therein. A cathodic protection system embodying the coating comprises a moisture impervious membrane of elastomeric polymeric material having electrically conductive particulate material evenly dispersed therein, an electrically conductive grid embedded in the membrane or contiguous thereto, and direct current means connecting the grid electrically with the reinforcing bars.

The disclosure relates to building construction flashing materials that are presented in both liquid and solid form and is useful in new building construction as well as retrofit procedures. The liquid form is comprised of a silicone base which has been reformulated to improve its flowability and self-leveling qualities allowing it to be applied by brush, pump or spray apparatus. It can be used alone or it can serve as a complementary effective moisture barrier when used with the solid form of the elastomeric flashing materials. The solid form of the elastomeric flashing materials can be extruded sheet material, formed specialty accessories, and/or a readily formable metallic substrate material which has been completely coated with the reformulated liquid silicone, resulting in a highly bendable, formable and shape retaining flashing component. Both the liquid and solid forms serve as an effective moisture guard which can be used individually or together to protect a wide range of building constructions and keep building interiors dry.

Deck joist flashing 10 is provided which includes a top wall 20 extending between lateral edges 22 spaced apart by a width similar to a width of a joist J to be protected from coming into contact with water. Side walls 30 extend down from the lateral edges 22 of the top wall 20. Bottom edges 34 of each side wall 30 include a beveled wall 40 extending therefrom. Each beveled wall 40 extends diagonally away from the bottom edges 34 of the side wall 30 to a tip 44. The tips 44 of the two beveled walls 40 are spaced further from each other than the lateral edges 22 of the top wall 20 so that the tips 44 are spaced away from sides of the joist J by the flashing 10. In this way, water is directed away from surfaces of the joist J to preserve the joist J from deterioration associated with contact with water. A material forming the flashing 10 is sufficiently elastic, soft and flexible that fasteners can pass through the flashing without cracking and the flashing 10 can seal around the fastener to preclude water migration through fastener holes in the top wall 20. The material is sufficiently soft that it can be rolled-up into a roll 112 to take up lesser space when being stored or transported.

A joist protector which is placeable between a joist and a plurality of planks prevents water from entering the joist through nail holes or cracks. The joist protector has a generally planar central web and downwardly angled side flanges. A plurality of spaced water deflectors and interspersed deck planking spacers may be formed on the central web.

A water shield, reinforcing device for insertion over a top edge of a joist member and useful for supporting a wood deck or other outdoor structure which may be exposed to water. The device includes an elongate channel of rectangular cross section which has a composition of sufficiently high modulus of elasticity to provide substantial inflexibility to the device. The width of the channel approximately corresponds to the width of the joist member and the height dimension is sufficient, in combination with the modulus of elasticity, to provide substantial inflexibility to the device. The length of the channel is coextensive and continuous with the length of the joist member and includes diverging wing members coupled at bottom ends and along the length of the elongate channel to direct water away from the joist member.