Last week, I went into detail on tips to help you prepare for a roof inspection by conducting a pre-inspection during daylight hours. Now, I will explain necessary steps to take while inspecting a roof in the evening, and what you can expect to see if there are issues.
Before you begin, it is important to […]
John Snell in Winter Mode
As winter makes itself known—undeniably so here in Vermont, with hard frosts, flurries of “hard water” and a couple feet of snow in the mountains—it is useful to review the procedures and techniques for using our imagers to find problems, especially those in buildings.
Industry standards, including the new RESNET Guideline, […]
Recently, I had an otherwise very bright student in a Level I course who had received no training since purchasing his imager three years before. He also had only ever used the system with the automatic image adjustment. An hour into the training, when (as we discussed last week) he realized the limitations of what […]
Adjusting the span (thermal contrast) and level (thermal brightness) of an image is essential to an accurate reading. Most imaging systems can make these adjustments automatically and, if you understand how the processing works (and doesn’t work), that can be a great advantage. Basically the AUTO function, if you are at a loss for how […]
We went pretty easy on you this week…
Answer: The infrared image is of an outside wall outlet, which needs a bit of insulation! This image was taken at the Ronald McDonald House in Minneapolis in January. The outlet is located on a west wall and there was a light wind from the northwest. […]
We now know that adequately insulating buildings, while essential, is only part of what is required to minimize the energy use and maintain comfort. Buildings also leak air, typically three or more times than is useful, and most kinds of insulation don’t necessarily control it. Excessive air leakage can also cause moisture problems and, in […]
More and more people are getting into using thermography for building insulation inspections. Unfortunately, many either buy the wrong imaging system—some of the very low cost ones simply don’t have either the resolution or thermal sensitivity required—or fail to get adequate training. BOTH are a mistake! While inspections seem easy, most often they are […]
Thermography is almost magic when it comes to finding problems with insulation in buildings. Whether you are auditing a building, providing consulting services, doing work on it, or overseeing work for quality control purposes, thermography—used properly—is a powerful tool that pays great returns.
Remember, we can’t see into or through walls, but we do see […]
Awesome participation this week—thanks for all your answers! We agree with Mr. Mike Kline as well…
Answer: Image is of an insufficient insulated home! I’m sure you all knew this…so let us go more in-depth. First off, it is the home of our very own John Pratten (go figure!). […]
Despite the fact that many families presently spend more on their cable and internet connections than they do on home energy, there has recently been—thankfully—a resurgence of interest in improving the efficiency of our homes. Most of us recognize we must use energy more efficiently in the long term for a variety of good reasons. […]