Window Installation Layer Sequence in Commercial Envelopes
Installing windows in commercial wall systems requires careful sequencing of pans, flashings, tapes, and sealants. This article outlines the best-practice layer order to maintain waterproofing and airtightness. Overview Improper sequencing of window installation layers can compromise air and water tightness. Proper execution requires understanding the order of water-shedding and airtight elements and ensuring product compatibility. […]
Thermal Insulation Options for Low-Slope Roof Systems
Low-slope commercial roof assemblies require careful thermal design to avoid condensation, improve energy efficiency, and meet fire ratings. This article compares common insulation types and their best use cases. Overview Commercial flat roofs use several layers of insulation to meet code-required R-values and prevent thermal bridging at structural elements. These systems often use tapered insulation […]
Choosing Flashing and Transition Materials for Envelope Continuity
Not all flashing products are compatible. Learn how to choose tapes, sealants, and membranes that ensure long-term adhesion and continuity across building envelope systems. Overview Flashings and transition materials are critical in connecting windows, doors, joints, and dissimilar substrates. Product compatibility, UV resistance, elongation, and durability must all be considered. This article outlines key flashing […]
Cladding Attachment in High-Wind Zones
Wind loads create suction and pressure on exterior cladding that must be resisted with properly engineered attachment systems. This article highlights safe and tested solutions. Overview In regions exposed to hurricanes or high winds, cladding systems must be engineered to resist uplift and pressure. Backing supports, fasteners, and substrate connections all play a role in […]
Basement Waterproofing Layer Systems Explained
Below-grade walls face constant hydrostatic pressure and soil moisture. This article explains each waterproofing layer and how to assemble them effectively for long-term durability. Overview Basement waterproofing systems typically consist of multiple layers: primary membrane, drainage layer, protection board, and sometimes interior vapor control. Each must be compatible with the structure, soil condition, and insulation […]
Air Barrier Testing Methods for Large Buildings
Modern codes and green certification programs require whole-building air leakage testing. This article explores test standards, common setups, and tools for commercial air barrier testing. Overview Air barrier testing evaluates how much air moves through a building’s envelope under pressure. Typical procedures follow ASTM E779 for large buildings and may involve multi-point blower door setups. […]
Minimizing Thermal Bridging in Masonry Wall Systems
Masonry walls often include shelf angles, ties, and concrete elements that can create thermal bridges. Learn how to mitigate these effects and improve building performance. Overview Masonry veneer systems commonly use steel shelf angles to support brick or stone cladding, but these create direct thermal bridges through the insulation plane. Without mitigation, these details can […]
Precast Concrete Panels in Envelope Assembly Design
Precast concrete offers structural strength and rapid installation for building envelopes. This article highlights how to incorporate thermal control, moisture barriers, and airtightness into precast assemblies. Overview Precast wall panels may be insulated or non-insulated, depending on the assembly. Panel joints, reveals, and embedded connection plates must be integrated with the air and water control […]
Design Strategies for Open-Joint Rainscreen Cladding
Open-joint cladding systems offer a modern aesthetic but require special detailing to manage water and UV exposure. This article reviews components and best practices for successful open-joint facades. Overview Unlike sealed cladding, open-joint rainscreens have intentional gaps between panels that expose the underlying water-resistive barrier (WRB). The WRB must be UV-resistant, and all fasteners must […]
Air Barrier Integration at Roof-to-Wall Intersections
Maintaining continuity at roof-to-wall transitions is often one of the most difficult aspects of commercial air barrier design. Discover techniques, components, and key materials used in these areas. Overview Where vertical air barrier systems meet horizontal roof membranes, complex detailing is required to maintain air control. Mechanical curbs, parapets, and metal edges must be addressed. […]
