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We discuss the critical considerations for insulating and air-sealing 100+ year old buildings and how moisture control must be addressed first, emphasizing how different construction methods, climates, and building conditions impact the overall insulation strategy. We discuss how insulating without addressing moisture first can lead to the rapid degradation of the building. We discuss the risks of efflorescence and spalling in masonry buildings, as well as condensation control, parapet walls, and insulating old roof assemblies.
The building industry is increasingly focused on energy efficiency, with higher energy performance standards being introduced in each new code cycle. There has been a lot of discussion about insulating existing buildings in recent years, however, energy efficiency impacts the design of building envelopes and the types of assemblies we construct. In this video, we discuss the consequences of energy efficiency as it relates to moisture and durability.
It's no secret that old buildings were built with greater attention to detail and more moisture resistant and durable building materials, such as old growth lumber, stone, multi-wythe masonry, plaster and lath, etc. In comparison, buildings that are designed and constructed today are composed of significantly more moisture sensitive materials, combined with more risky architectural practices. In this video, we discuss the concept of the "perfect wall" and how it can be applied to create a highly energy efficient wall that could be expected to last for at least 500 years, using historical precedents in combination with modern building materials and techniques.
In this video, we break down the 5 biggest insulation mistakes that can lead to moisture problems and rapid building degradation. Learn why blindly filling cavities, skipping air sealing, and using the wrong insulation types can cause major damage. We cover essential steps like proper water management, condensation control, and why you should NEVER use foil-faced or plastic-faced batt insulation. Protect your home and avoid costly repairs by understanding these crucial insulation tips!
The improper use of a vapor barrier can lead to more moisture problems, mold, and rot. In this video, we discuss how vapor barriers work, when you should use them, and the alternative strategies that can help you keep your home dry and durable.
Windows are common sources of leaks, but proper installation and flashing can prevent catastrophic water intrusion. This video explains why many window installations fail and provides best practice details to ensure your home remains leak and moisture-free. The problem with many window installations is that they assume perfection in the system, but things are seldom "perfect" in reality. Flashings fail, window seals age, and water always wins. Learn the right way to flash and water manage your windows for a long-lasting, durable assembly by draining the sill and letting water out when it gets inside.
Many existing homes and buildings are currently being retrofitted with insulation due to increasing energy codes and the demand for greater thermal comfort. This shift is driving the market toward more energy-efficient buildings with higher R-values. However, it's important to recognize that adding insulation alters the moisture balance within a building. If a house or building is insulated haphazardly, it can lead to rapid deterioration of the structure. There are several methods for insulating an older home or building, but factors such as existing conditions, historical value, logistical constraints, and budget can significantly influence which strategies are feasible. In this video, we're talking about how we're using smart vapor retarder membranes and spray-applied air barriers in insulation retrofits to address moisture issues like condensation for a wide range of different building conditions and applications.
Parapets in a flat roof assembly are often a source of leaks, moisture issues, and air leakage, as they are the intersection between the exterior walls and roof plane that are exposed on three sides to weathering, in addition to interior air leakage. Parapet walls must effectively transition the flat roof membrane to the weather resistive barrier on the exterior walls, using a series of flashings and membranes to ensure water-tight and air tight connections between dissimilar materials. Parapet walls must be designed to resist and shed bulk water, prevent air leaks that can deposit moisture into the cavity space, and be constructed to remain durable throughout the service life of the building.
Air barriers and vapor barriers are often used interchangeably in the building industry, but understanding the differences between the two is crucial to prevent future issues. Air leakage in and out of a building is the second leading cause of moisture-related problems such as condensation and mold growth, following bulk water intrusion. In this video, we will discuss the importance of air barriers in controlling moisture, the need for a vapor permeable or impermeable air barrier, or a regular vapor barrier, and how to apply these principles to your project to ensure a long-lasting and durable building for future generations.
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