Hellen White

Blower door testing has evolved far beyond a simple pass-fail measure of building airtightness. For contractors who invest in their own equipment, the blower door combined with a manometer opens the door to diagnostic techniques that identify hidden air leaks, evaluate pressure relationships between building zones, and test forced-air HVAC system performance. Mastering these methods […]

Linseed oil paint is one of the oldest painting mediums still in use, and for good reason. This centuries-old, plant-based coating offers exceptional durability, vapor permeability, and a beautiful finish that modern petrochemical paints struggle to match. Whether you are restoring a historic property or simply want a nontoxic alternative for your next project, understanding

If you live in a two-story home, a Cape Cod, or a Colonial, you have likely experienced a hot second floor during summer. The upper level can run 5 to 10 degrees Fahrenheit warmer than the floor below, making bedrooms uncomfortable and living spaces nearly unusable. This temperature difference is especially common in regions like

Humans are remarkably good at sensing temperature. Most building professionals can guess the air temperature in a room within a few degrees Fahrenheit without looking at a thermostat. But when it comes to humidity, the same professionals often miss the mark by a wide margin. Understanding and measuring the moisture content of air is far

Thermal imaging has become one of the most valuable diagnostic tools available to builders, energy raters, and homeowners seeking to understand how their buildings actually perform. As Randy Williams, an energy rater with over a decade of field experience, notes in his article on Green Building Advisor, infrared cameras are among the most-used tools in

Building a home that performs well in a world of rising energy costs requires thinking beyond code-minimum walls. Standard 2×6 framed walls with fiberglass batt insulation deliver around R-20, but progressive builders and designers now target R-40 or better for the wall assembly. This higher insulation value, combined with rigorous airtightness and careful moisture management,

Modern kitchens come equipped with appliances that promise convenience, and few features sound as appealing as an oven that cleans itself. Self-cleaning ovens have been a standard offering in many ranges for decades, yet homeowners rarely understand what the process involves or what it costs to operate. The self-cleaning cycle heats the oven cavity to

Duct boots are the metal fittings at each register or diffuser that connect the ductwork to the room. When a central air conditioning system runs during hot and humid weather, these boots often become cold enough to cause water vapor in the surrounding air to condense on their surfaces. The result can look like rain