- VID
- RR
As materials and equipment have improved, energy reduction as a goal has increasingly been replaced with the goal of net-zero energy use. But the general approach to building energy efficient homes… Read More
- RR
This report analyzes the performance of walls clad with HardiePlank fiber cement siding and compares them to traditional stucco assemblies. The data presented is a subset of experimental data from a… Read More
- RR
This report describes the construction and instrumentation of Phase IV of a multi-phase, multi-year research project at the Vancouver Field Exposure Test Facility in Coquitlam, British Columbia. The… Read More
- RR
This report describes the construction and instrumentation of Phase III of a multi-phase, multi-year research project at the Vancouver Field Exposure Test Facility in Coquitlam, British Columbia.… Read More
- RR
This report compares the moisture related performance of an exterior insulated wall to the performance of two other common construction methods, side-by-side. The data presented is a subset of… Read More
Marine
- RR
This report summarizes hygrothermal analysis of specific attics constructed in California. The analysis was done using historical experience, published work in journals and trade publications,… Read More
Hot-Dry/Mixed-Dry
- RR
This report is an extension of a previous analysis study titled “RR-1014: High R Walls for the Pacific Northwest – A Hygrothermal Analysis of Various Exterior Wall Systems”, conducted by BSC for… Read More
Marine
- RR
This report considers a number of promising wall systems that can meet the requirement for better thermal control. Unlike previous studies, this one considers performance in a more realistic matter,… Read More
Marine
- RR
Every exterior cladding system needs an air space and drainage plane for performance and durability. This article presents the right materials and spaces for most exterior claddings—brick, stucco,… Read More
- RR
The general principle of building durability has two components: buildings should be suited to their environment and the laws of physics must be followed. We tend to ignore the first and find the… Read More
- RR
Duct leakage is a concern in the HVAC field, due to energy consumption, pressure balance problems, bypassing of the filter by leakage air, and contaminant draw from unconditioned spaces. Therefore,… Read More
- RR
Understanding the significance of the complex flow and pressure distribution problems created by the interaction of the building envelope with the mechanical system and climate can lead to changes in… Read More
- RR
Unvented-cathedralized attics are known to be advantageous in hot-humid and hot-dry climates, whereby, exterior moisture would be excluded for hot-humid climates, and attic mounted air distribution… Read More
Hot-Humid, Hot-Dry/Mixed-Dry
- RR
Energy efficient homes are inherently airtight and require ventilation for acceptable indoor air quality. Of all the options currently available, the low cost and low maintenance central fan-… Read More
- RR
Sealed attic construction, by excluding vents to the exterior, can be a good way to exclude moisture-laden outside air from attic and may offer a more easily constructed alternative for air leakage… Read More
Hot-Dry/Mixed-Dry
- RR
In cold climates, the primary purpose of attic ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow, and to vent moisture that moves from the conditioned space… Read More
Hot-Dry/Mixed-Dry
- RR
This report is available from the Canadian Urethane Foam Contractors Association. It is reproduced here for convenience. A common question encountered by SPF applicators, building designers, and code… Read More
- RR
An hourly simulation study using DOE2.1E was conducted to determine the annual difference in energy consumption between various ventilation options in different climates.
- RR
The balance between wetting, drying, and safe storage is critical to the long term performance of building enclosures. Where wetting cannot be controlled to acceptable levels, safe storage and drying… Read More
- RR
The research reported in this paper is aimed at increasing the understanding of the hygrothermal performance of interior basement insulation systems by a combination of field monitoring of four… Read More
Cold
- RR
This paper documents the experimental methodology, details, and results and discusses how this information can be applied to modeling drained wall systems. Practical applications and research… Read More
- RR
This document summarizes the theory behind thermal insulation and building system heat flow control metrics and presents a literature review of selected research into this area. As the building… Read More
- RR
Concentrations of 54 volatile organic compounds (VOCs) and ventilation rates were measured in four new manufactured houses over 2-to-9.5 months following installation and in seven new site-built… Read More
Mixed-Humid, Hot-Humid
- RR
This paper reviews current ventilation codes and standards for residential buildings in Europe and North America. It also examines the literature related to these standards such as occupant surveys… Read More
- RR
The purpose of this research program was to determine the impact resistance performance of advanced framed wall systems with insulating sheathing as the primary sheathing from wind blown debris. With… Read More
- RR
A performance review of residential assemblies in the central Florida (Orlando) area during the three hurricanes in August and September 2004. The specific focus of the review is on the water… Read More
Hot-Humid
- RR
Two seemingly innocuous requirements for building enclosure assemblies bedevil builders and designers almost endlessly: keep water vapor out, let the water vapor out if it gets in. It gets… Read More
- RR
Just about everyone in the building industry can be guilty of using building terms loosely, and a prime example is with attics, roof assemblies. You can vent single components, you can vent… Read More
- RR
Good design and practice involve controlling the wetting of building assemblies from both the exterior and interior and different climates require different approaches. Ideally, building assemblies… Read More
- RR
Exposure to sunlight (ultraviolet radiation) and moisture are the major factors affecting the durability of paint coatings and the durability of the substrate. Ultraviolet radiation, moisture and… Read More
- RR
Construction practices have improved and the HVAC systems need to improve with them. The deKieffer Bypass relieves air pressure in rooms without compromising sound or light transmission.
- RR
This report presents a 3D window installation sequence with detailed step-by-step instructions on how to effectively install a window using building paper as the drainage plane. These details were… Read More
- RR
Exterior insulation and finishing systems (EIFS) are inherently defective and unfit of use as an exterior cladding system where moisture sensitive components are used without a provision for drainage… Read More
Hot-Dry/Mixed-Dry
- RR
Roofs can be designed and constructed to be either vented or unvented in any hygrothermal zone. Air barrier systems are typically the most common approach, however, air pressure control approaches… Read More
- RR
Air barriers are systems of materials used to control airflow in building enclosures. They typically completely enclose the air within a building. The physical properties which distinguish air… Read More
- RR
A concise explanation of how a high performance HVAC system works in a high performance home. How can I be saving energy, money, and wear and tear on my equipment if it seems as though my system is… Read More
- RR
When constructing unvented roofs with asphalt shingles in hot humid climates, a vapor barrier must be installed between the asphalt shingles and the roof deck. Asphalt shingles store water from dew (… Read More
- RR
The simplest, most effective, and most economical way to introduce fresh air in homes with central forced air systems is to use the central fan to pull in and distribute a controlled amount of… Read More
- RR
"Buildings leak water and air, which is normal and unavoidable. Therefore, designers should not fixate on preventing leakage, i.e. making buildings “airtight.” Because even if all cracks were sealed… Read More
- RR
This article was written to tie together and summarize the various papers on unvented conditioned cathedralized attics found on our website. We realize that there is a wealth of information, and much… Read More
- RR
This article briefly repeats some of the information in the other mold articles but also includes information on how to prevent mold in residential structures. Mold requires water. No water, no mold… Read More
- RR
The purpose of this document is to assist builders with the decisions regarding what to do and how to do it when mold is found in specific locations. This article provides both general guidelines for… Read More
- RR
Mold testing procedures were not developed to determine whether a home is “safe” or “healthy” or “clean." Although this article is titled "Mold Testing" it actually tells you why testing for mold is… Read More
- RR
Too much mold can affect the health of you and your family. In addition, mold can damage or destroy building materials such as wood or gypsum board in our homes. This article answers your questions… Read More
- RR
Builders for many years have put mechanical equipment and ducts in non-living spaces such as crawlspaces and attics primarily to save valuable floor space. Be that as it may (there are lots of good… Read More
- RR
What relative humidity should I have in my home? Seems like a simple enough question. However, the answer can sometimes be difficult to understand.
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