Photos of HEC projects
Hidden air leaks cause some of the largest heat loss in old and new homes alike. Air leaks can also result in condensation, mold, building degradation and ice dams. Common air leakage sites include:
In many cases, homeowners replace a roof, increase ventilation, add attic insulation and replace a standard furnace with a high efficiency closed loop furnace and wonder why energy consumption is still high and they suddenly have condensation problems in their attic that they never had before. High efficiency furnaces cause indoor relative humidity to go up. The increased attic ventilation can pull more moisture laden air through the unsealed thermal bypasses in the attic. The insulation makes the attic colder and warm moist air condenses. The condensation and frost is usually heaviest directly over large thermal bypasses.
HEC Technologies understands the importance of sealing large thermal bypasses before insulating. Sealing all of the small leakage points is also a good idea but usually involves removing existing insulation, sealing and re-insulating. This increases performance and minimizes problems but also increases costs. We usually present the homeowner with the option.
Insulation is your primary defense against heat loss through the building envelope. However, putting insulation into a house after it is built can be pretty difficult. Hiring a knowledgeable professional is usually a prudent idea.
HEC Technologies starts with a thorough knowledge of framing techniques and building science. Visual inspection, infra red cameras, blower doors and smoke pencils are used as needed to reveal a multitude of problems that a home owner or poorly trained insulation technician would never find. Dirty spots on painted surfaces, carpeting and fiberglass insulation can also be telltale signs.