Green Construction Holmes Builders LLC  Home Performance is based on Indoor Air Quality, Building Science and astute observation, not “legends” to determine what is happening or will happen in a building. Some of the equipments our home performance contractors use to diagnose a building is infrared camera  and  blower door test equipment to detect heat lost, moisture meter to locate potential mold and the list goes on. We don’t know every single detail of how everything works in the house, but we understand how things interact, and we know who to call for specific problems. They explain what they have done and how equipment works, so the residents become active partners in home performance.

Buildings are no longer just four walls, a roof and a stove. They’ve evolved into tightly sealed, comfort chambers, with tricky equipment and plenty of toxic materials. 

What causes sick building syndrome?

The term “sick house” is used when the exact cause of your symptoms can’t be identified. However, there are a variety of possible causes you can ask your doctor about. 

The culprits behind it may include:

  • buildings with poor ventilation, such as schools, offices, and public spaces
  • high levels of dust
  • tobacco smoke
  • rooms with poor lighting
  • outdated computer displays that cause eye strain
  • the presence of mold or fungus
  • formaldehyde (mostly found in wood furniture and floors)
  • asbestos 
  • chemicals in the air from cleaning products
  • pesticides
  • carbon monoxide 
  • ozone from the use of printers and fax machines
  • Radon
  • heat or low humidity 
  • insect or animal droppings

Thermographic For homes


Thermal Imaging for Energy Assessments & Home Inspection

Thermal imaging for air tightness and energy efficiency are important quality control measures when buying, building or renovating a home. Heat loss can account for up to 50% of total energy consumption in a building with causes ranging from air leakage through chimneys, attics and wall vents to badly sealed doorways and failing thermal windows, to missing insulation. Don’t be fooled by “hobby cameras” attached to a cell phone. Only professional equipment can produce professional results.


Ice dam

What does an ice dam look like?

Some ice dams cannot be seen because they are completely buried in snow, or because they may be higher on the roof or in the roof valleys (or both).

The cycle of snow on your roof slowly melting and refreezing lower down on your roof.

Several factors can conspire to melt snow and cause ice dams. Poor attic insulation, lack of adequate attic ventilation, and warm-air leaks into your attic cause the roof deck to heat up from the underside and melt the snow on your roof. The water (melted snow) trickles down the roof and freezes as the temperatures fall below freezing, or when the water reaches a colder surface, like your overhangs, where there is no heated living space beneath. As the freeze-thaw cycle continues, the ice becomes thicker and thicker, eventually creating a small wall of ice – an ice dam. Future melting snow will stop behind the dam, with nowhere to drain off the roof. Not only does this pool of water eventually refreeze into more ice, but also the water can work its way under the shingles (or other roofing material). At this point, the water can leak into your home or building, and quickly cause damage to walls, ceilings, insulation, and other areas. Shingles are designed to shed water, not to hold water.


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