Tuesday, March 12, 2013

Radiant Ice and Snow Melt System Detection

radiant ice and snow melt pipe detection

Ice and snow melt systems are utilized in many applications throughout the state of Massachusetts. Business owners utilize snow and ice melt systems in outdoor malls, parking lots, car washes, walkways, and loading ramps to eliminate the expense of continuous snowplowing, to avoid skidding of vehicles and to prevent slip-and-fall accidents on their property.

As a convenience, homeowners of upper-end homes install ice and snow melt heating systems in their exterior slabs...including driveways, sidewalks, stairs, and patios to completely eliminate the need for any back breaking shoveling or snow removal.

There are two types of ice and snow melt systems in Massachusetts --- embedded electric heat cables and hydronic piping. In my experience most of the ice and snow melt systems in Massachusetts are predominately hydronic systems. This is basically a closed-loop tubing made of a flexible polymer (typically a cross-linked polyethylene) or a synthetic rubber that circulates a mixture of hot water and propylene glycol (antifreeze), much like the mixture used in an automobile radiator. A boiler will warm the fluid to temperatures of 140 to 180 F. which will provide sufficient heat throughout an exterior surface for melting any snow that may have the ability to accumulate. The concealed ice melt tubing ranges in diameter from 1/2 to 3/4 inch and is flexible enough to bend into various spiral or serpentine patterns (as seen in my infrared images below) to allow for an even heat distribution and warm up any exterior surface.


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These in-slab snow melt systems are designed to have a long service life, but everyone knows that continuous use of any material will not last forever. When these embedded systems do fail, a plumbing repair is imminent. The problem with repairing this system is that the heating elements are completely embedded, and any repairs that need to take place are very difficult because the concrete around the damaged section of the embedded piping must be removed first. Locating and pinpointing the exact area of a rupture in any large ice and snow melt system is completely impossible with a visual inspection, so detecting the exact trouble spot is where Thermal Imaging comes into play.

A rupture in concealed hydronic tubing can easily be detected with a simple Infrared (Thermal) scan. There’s no guesswork involved. I simply pan the entire snow and ice melt surface with my infrared camera and it enables me to clearly detect every embedded heat pipe within minutes of heating up the system. If there are any ruptures, breaks or leaks in the concealed piping system, it will clearly show up as an anomaly and this defective area can now be marked out with a temporary spray paint with precision. This area of concern can now be carefully excavated (attempting to avoid damaging the existing piping) and the piping can then be properly repaired. Once the repair is completed, the breached material can then be re-patched. Infrared detection will always keep your repair work down to a bare minimum.

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Massachusetts based Ernie Bach Jr. Honda dealership had a major leak in their ice and snow melt system, but was unable to pinpoint the concealed pipe leak visually.My infrared scan detects and pinpoints the exact location of the ruptured pipe within minutes.

ice melt pipe detection

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Infrared imaging allows me to detect the exact area of a pipe burst in this radiant ice and snow melt system.

buried pipe leak detection

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An automatic car wash (installed right above an ice and snow melt system) had to be replaced without disturbing the concealed radiant heat piping that is below it.

radiant piping at car wash

My infrared scan made this heavy duty car wash machinery replacement possible without disturbing the heat pipes embedded in the concrete floor below it.

A temporary orange marking paint was utilized to identify all the concealed pipe locations. Marking these concealed pipe locations gave the installers a guideline to install the new automatic car wash. You can clearly see that embedded ice melt piping will never be completely straight.

car wash radiant piping

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Thermal imaging allows me to easily detect and pinpoint the exact location of the main supply line for this radiant ice and snow melt system.

embedded pipe detection

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Another automatic car wash upgrade requires infrared scanning in order to detect the exact location of all embedded piping. You can clearly see how these buried pipes will not remain perfectly straight when contractors pour concrete over them. Note the two foot void on the left.

ice melt pipe detection

After mapping out the embedded pipes within this car wash bay (above), the automatic car wash was bolted to this floor with no issues.

infrared car wash bay

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This is another car wash with a radiant ice melt system that had failed. You can clearly see the bright yellow area where the embedded piping has failed.

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The concrete floor was then breached and a Plumber successfully repaired the damaged pipe without having to tear up the entire car wash bay.

ice melt pipe detection

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Another embedded pipe that has failed. This leak is easily detected by the bright yellow mass on the infrared image.

ice melt pipe leak

After breaching this concrete floor, the active leak was obvious.

ice melt pipe detection

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Here is another embedded radiant heat pipe that has failed on an exterior walkway. Note the bright yellow mass on the infrared image.

ice melt piping burst

After breaching this concrete walkway, the leaking pipe was obvious.


ice melt pipe detection

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This ice melt system has been "ON for approximately one hour. I am now detecting an embedded pipe leak at the bright yellow area.

It gets worse. See next two images...

leaking ice melt system

Looking in the opposite direction, this ice melt system was looking good with no leaks. But after waiting over an hour, I detect major issues. See next image....

failing ice melt system

Infrared detects another bright yellow area which is indicative of another defective embedded pipe. This entire system must be repaired or replaced immediately.

failed ice melt system

Friday, March 1, 2013

Concealed Insulation Defects Detected with Infrared

insulation defects
Todays homeowners pay a lot of hard earned dollars to heat and cool their homes and I know you Massachusetts and New Hampshire residents would love to cut the high costs of conditioning your homes. With the continuous rise in heating fuel costs, the only ideal way to cut these costs is to locate and seal those breached areas of your home that are stealing your energy dollars daily. If you are able to retain the conditioned air (inside your home) for a longer period of time, you will be spending much less money on fuel and electricity that is powering your heating and air conditioning system. In a typical home, space conditioning and comfort bills can account for up to one-half of your home's energy bills, with the remaining portion due primarily to heating your domestic water, interior lighting, and your appliances. Knowing that space conditioning accounts for half of your energy bills, I can show you how you can lower this expense now.
What you need is an infrared inspection! An infrared inspection is a brilliant method of providing you with an instant snapshot of active energy losses through the interior walls and ceilings of your home. Thermal imaging will visually show thermal mapping of any damaged, settled or improperly insulated cavities throughout your home. Appreciable temperature differences, (due to variations in thermal energy heat transfer) allow me to determine the adequacy and proper installation of the concealed insulation that is installed throughout your structure's exterior wall and ceiling cavities. I’m able to detect obvious insulation issues while thermally scanning your exterior ceiling and wall surfaces. Deficient insulation is a poor insulator, which makes it a great conductor of your conditioned air, and this is what enables me to easily detect the thermal anomalies in these areas. Any major differentials in surface temperature are going to be the obvious areas that are going to require you to upgrade insulation, in order for you to start saving your energy bucks.
Keep in mind that there are always going to be minor air breaches in typical exterior walls and ceilings, due to wood structural members that will conduct exterior air at the structural transitions and simply can not be insulated. But, I would like to walk you through your home and literally show you the major areas of concern where excessive air is infiltrating your conditioned living area, causing your energy bills to become sky high.
After pointing out the inefficient areas of your home that need to be improved, I will be providing you with a comprehensive professional IR report which will be highlighting those areas of concern that are in need of an insulation upgrade now. You can then utilize my infrared report as a guide to locate the exact areas of concern when applying the insulation or simply hire an insulation contractor who will be able to utilize my Infrared report as a guide to locating and upgrading the insulation defects and fissures throughout your home.

Take a look at many concealed insulation breaches that infrared can detect...

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A visual inspection of this ceiling indicates that nothing is wrong, but my thermal scan reveals missing insulation throughout the outer rim board area.
ceiling insulation void

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This wall looks fine until my infrared camera detects settled insulation

settled wall insulation

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This children's room looks fine visually, but my infrared camera reveals missing insulation throughout another rim board wall cavity.

missing insulation ceiling

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Visually, this wall appears to be in great shape, but my infrared scan detects missing insulation behind this attic knee space. This cold air infiltration is as bad as leaving a window ajar.
insulation missing in attic

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I was hired to inspect a recent installation of blown-in insulation. Visually, it looks fantastic, but infrared reveals shoddy workmanship.
insulation settled

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The outer ceiling cavities in this bedroom were not insulated.
ceiling_insulation_void

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SPRAY FOAM INSULATION
There is a rumor (throughout the insulation market) that spray foam insulation is the best insulation on the market today. The manufacturers of this innovative product claim that the foam is energy efficient, environmental friendly, and they also claim that it will fully expand and completely fill all cracks, crevices, and voids. They also claim that foam insulation creates an effective air tight seal which guards against air infiltration, which is the number one source of energy loss in a structure.
Well, most of today's foam insulation may be environmental friendly, but I can say (from experience) that foam insulation is not the perfect insulation and it never will be, unless the foam insulation installer has their foam application verified with an infrared scan. I've performed many infrared inspections on newly constructed homes containing foam insulation and I have never come across a perfect foam insulation application yet. There will be imperfect applications due to the air bubbles that develop within the foam (as it's expanding) and these voids will allow exterior air to infiltrate your living area. An infrared scan will detect these voids and the foam insulation applicator can then apply additional foam to these areas in order to obtain that air tight seal that is required for an energy efficient home.
Take a look at these images of a foam insulation application before the drywall was installed. A local building contractor utilized my infrared services to verify that there were "NO voids" within the thick foam insulation that was applied into the ceiling and wall cavities of the structure. They were seeking peace of mind before they installed the drywall and my infrared scan easily detected minor voids that they simply marked and upgraded during my thermal scan.

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This foam insulation did not form a tight seal at the lower portion of these wall studs. The top portion of this wall looks great.
foam insulation voids

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Note the excessive voids throughout this entire foamed-in wall.
insulation foam defects

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The foam insulation in this attic cavity looks pretty good, until infrared detects minor inefficiencies.
foam insulation defects

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This particular foam application is flawless, which is a rare occasion.
proper application of foam insulation

Tuesday, February 26, 2013