If significant damage to the deck is found, there may be no choice but to replace it during tear-off and reroof. When it comes time for a roof replacement, the commercial roofing contractor should discuss options with the building owner for either a complete tear-off or reroof over the existing system. He or she will inspect the roof for damage and discuss details with the building owner, such as the age of the roof, the building’s use, climate concerns, the building owner’s financial expectations, budget, building code, energy requirements and possible replacement needs. ![]() To determine whether repair or replacement of a commercial roof system is necessary, a licensed roofing contractor should assess the existing roof system. Once installed, a commercial roof must be inspected annually at minimum (and immediately after a major weather event). Both sealants and caulking are maintenance items that should be checked for serviceability every year with periodic replacement or redressing, typically after several years of service. In consideration of these important details, an essential roof system accessory is sealant. Additionally, roof penetrations for HVAC equipment must be checked during inspection. ![]() If you need to learn more about flat roofs, check out this complete survey of low-slope roofing in the guide to Choosing a Flat Roof.īeyond the membrane itself, proper installation of the many components that meet the commercial roof membrane at its termination point is critical. ![]() The choice of these system types will depend upon specification, budget, climate and environmental considerations. The importance of the roof to a building is paramount.Ĭommercial roofs, as shown in the picture above, come in a variety of system types, including asphalt-based, single ply, rubber and metal. In the case of most commercial, industrial or educational institutions, roofs are usually flat, or low-slope. It’s meant to close the envelope securely, keeping the contents safe from outside elements. A building’s roof is like the seal to an envelope. Eventual deterioration of building materials.Īs we break this review into the parts that make up the building envelope, let’s begin with the ROOF.Moisture, mildew, condensation and mold.In examining a structure in its entirety, there are a number of common building envelope concerns, including: This report thoroughly outlines all of the components of the building envelope and offers an exhaustive list of related resource pages related to air barriers, air quality and mold prevention, and sustainability and wind safety, to name a few categories. ![]() National Institute of Building Sciences (NIBS) developed a comprehensive guide for exterior envelope design and construction for institutional and office buildings in late 2016 under guidance from the past Federal Envelope Advisory Committee. Professional assessment, diagnosis, design and management of the building envelope can save money, decrease energy usage, lengthen the life of building materials and improve the environment within.Īs part of their “Whole Building Design Guide,” the U.S. While this applies to virtually any building, our focus for this article is on commercial and industrial buildings. This includes three main systems: the roof, the wall (including doors and windows) and below-grade waterproofing elements. The building envelope consists of the parts of a building that keep the weather out and conditioned environment in. This article is intended to provide an overview of the building envelope and details about its components and products. An Introduction to the Building Envelope Products & Systems Monday, AugUnderstanding the Building Envelope
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