Jack Gray Introduction First of all, I’d like to point out that a roof covering (roof system) is not considered a structural building component, so you tend to have more leeway and less code detail when it comes to roofs than with most other parts of a building. The roofing sections of the building code will even …
Water Weight Calculator (by Unit of Volume & Temperature) Note that water is at maximum density (or weight per unit of volume) at 39.2°F/4.0°C. The weight of water is usually given for water at maximum density by default, but we are using room temperature (70°F) as the default setting. If you select a temperature other …
I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Weight of Metal vs. Density of Metal We’re dealing with three related concepts here: mass, density, and weight. Mass is the amount of matter something has. Density describes the amount of a specific material (matter) that …
Introduction Roof blisters are a common but often misunderstood issue in various roof systems, including built-up, modified bitumen, and asphalt shingle roofs. These raised pockets form due to trapped air, moisture, or volatile gases within the roofing materials. While some blisters remain stable and do not immediately compromise the integrity of the roof, others can …
Introduction The following table provides the typical expected useful service life durations for every type of primary roofing material and all roof systems you’ll be likely to run across (figuratively, don’t actually run across a roof). I have also included the typical maximum warranty lengths for each. Roof warranty terms and limitations can be tricky, …
Introduction Rooftop equipment screens are more than just an architectural afterthought – they serve essential roles in protecting and concealing rooftop mechanical systems. Exposed rooftop equipment is generally an eyesore; equipment screens can give the building a consistent, not unpleasant appearance. If you’re a building owner, architect, contractor, or facility manager, some understanding of equipment …
Introduction I was responsible for maintenance and leak response for several commercial coal tar pitch roofs in Texas that were part of my company’s roof management portfolio for many years. I was also the roof observer on several very large roof replacement projects where coal tar pitch roofs were removed and replaced. I did a …
Introduction Hypalon is a somewhat unique single-ply roofing membrane material that used to be installed on commercial low-slope roofs. “Hypalon” is a brand name used by DuPont for chlorosulfonated polyethylene (CSPE), a type of synthetic rubber; sheets of CSPE were joined together to form the finished roof membrane. CSPE roof membranes are known for their …
I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Introduction When you’re dealing with roofs, material weights are always a concern. Especially if a contractor is trying to get you to let him to store materials on the roof. You want to avoid overloading. I …
I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Introduction This Drip Edge Quantity Calculator is a tool designed to help you accurately estimate the amount of drip edge material you need for your roofing project. It takes into account roof perimeter length, the length …