Abstract: A roof ventilation apparatus for a sloped roof having a cap and base plate is provided. The cap has a top surface and a bottom surface. The bottom surface has a flange that defines an opening to a cavity formed between the top and bottom cap surface. The cavity provides a path for air exchange from a roof opening through an air passage formed between the flange and cap top. The base plate has a collar or curb surrounding an aperture that fits inside the cap bottom cavity. The base plate preferably is shaped such that when installed on the sloped roof the cap entirely covers the base plate. Preferably, the base plate includes a collar and an angled edge configured to channel moisture that seeps within the vent cap.

Abstract: A manufactured chimney cap is disclosed which provides a weatherproof long lasting enclosure that is designed in such a way so as to divert water away from a centrally integrated chimney flu and off of the chimney cap itself, being encased in a decorative weather-proof material such a aluminum siding, and which is easily installable by one contractor of ordinary skill in a short period of time.

Abstract: A cast in place chimney form and installation method therefor. The cast in place form being of a relatively light weight construction and having physical and visual features that allow it to be used as a chimney cap form and to be left as an element of the finished chimney cap. The method of installation comprising the positioning of the form with relation to a step of chimney construction and the pouring of the chimney cap with the form being left in place.

Abstract: A chimney cap and a method for making the same are described. The chimney cap is more consistently and uniformly manufactured, which permits nesting. This is accomplished by forming the cap from single piece of expanded metal to create a substantially square or rectangular cage where each side of the cage has an integral flange that is bent substantially perpendicular to its respective side. The substantially square or rectangular cage is stretched to form a shaped trapezoidal cage, with a top portion of each side of the cage having a longer span that a bottom of portion of each side.

Abstract: A combination damper and chimney cap apparatus is provided to ventilate a fireplace and a flue connected thereto to provide a draft through the flue. The apparatus includes a platform constructed and arranged to be removably mounted to the flue and formed with an aperture extending therethrough in communication with the flue. An element senses temperature-smoke at the flue and at an area external to a fireplace connected to the flue to provide a signal in response to the temperature-smoke. A ventilation fan is connected to the a support to provide a draft sufficient to exhaust the smoke from the fireplace and the flue and to cool a electronic motor for the apparatus.

Abstract: An aparatus adapted to be mounted on a sewer vent stack to inhibit frost buildup in cold weather including a supporting frame containing a central rotatable shaft with a wind turbine on the end exposed and four vanes on the end within the vent pipe. The rotation of the shaft will cause frost build up to be scraped off by the vanes. Lack of rotation in a breeze will indicate excessive build up and a possibly dangerous situation.