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jawabaz

05:42PM | 02/09/07
Member Since: 02/08/07
6 lifetime posts
Bvwindows
We had a thermal scan done on our new home. It proved that we have air infiltrating into our home from around our windows. We need to prove that each one was installed wrong. Is there an easier way to prove they were installed wrong besides taking all the siding off around each window?

Thanks!

TruBlue

06:11PM | 02/11/07
Member Since: 04/28/06
42 lifetime posts
Where is the air coming in? Is it between the sash and the frame, or is it between the frame and the stud rough opening?

Also, are they casements, double hungs, or something else?

jawabaz

04:38AM | 02/12/07
Member Since: 02/08/07
6 lifetime posts
We have plastic on all of our windows because the sashes have bowed in the corners. This is allowing air into our home.

The infrared scan showed air coming in around the framing of the window unit. On infrared scans cold air infiltrating shows up on the scan as blue. It was blue completely around the woodwork and wall of the windows.

Most are casement windows, some are picture windows, some are smaller stationary windows and two patio doors.

We are wondering if there is another scan that can be done to determine whether or not they were installed wrong? Or, do we have to remove the siding? Our builder is building another home across the street. The nailing fin is shattered in places. They also did not put any type of seal over the fin before putting siding on. We are afraid the same was done on our house.

Any help would be greatly appreciated!

EnviroGroup

07:10AM | 02/12/07
Member Since: 01/03/07
4 lifetime posts
A complete diagnosis of the window installation quality/procedures and the proper performance of the window itself will require some demolition of the exterior and the interior around at least one window.

Moisture mapping should have been performed in conjunction with the thermal scan to identify the thermal anomaly. Infrared only registers thermal differences and there are many color palettes and settings to use (the color blue does not necessarily indicate cold air); additional testing is necessary to know if this thermal anomaly is moisture, airflow, missing insulation or a combination of the three. Was the infrared camera operator certified and experienced in the use of this instrument?

TruBlue

10:45AM | 02/12/07
Member Since: 04/28/06
42 lifetime posts
Like the previous message stated some demolition will be required to discover the extent of the problem. If the sashes are bowed as you stated then that is easy to see and easy to fix. The manufacturer would have to provide "unbowed" sashes. You could also check the margins around the casement when viewed from the exterior to determine if the windows are properly installed for squareness, smooth operation, and proper performance.

The cold coming around the frames might be from inadequate or nonexistent insulation around the frames. You would be able to see this if the interior casing is pulled off (assuming you have interior casing and not drywall returns).

To determine if the installation fins are intact, you would unfortunately have to remove all or some of the exterior trim or siding to take a look. It would also be helpful to get a copy of the window manufacturer's installation instructions (they're usually attached to the windows when they're delivered such as the house across the street) to see if all of the instructions were followed.

I know of no easy scan one can do in place of some demolition however.

One last thought - you could get an infrared thermometer for about $49 from RadioShack. It would accurately measure the surface temperature of whatever its invisible infrared beam strikes. It could measure glass edge temperature, temperature of weatherstrip, etc. Incidentally, my ice cubes are currently -4° and my 50 watt light bulbs are 212° . . .

jawabaz

08:05AM | 02/13/07
Member Since: 02/08/07
6 lifetime posts
The thermal scan was performed in conjuction with a blower door unit. Yes, the camera operator was trained on the use of the camera. He is an energy rater with the local utility company.

We have documentation from a home our builder is currently building. Nailing fins are shattered and builder tape was not used per the window manufacturers requirements.

Thanks!

jawabaz

08:11AM | 02/13/07
Member Since: 02/08/07
6 lifetime posts
Thank you for your help.

We are in the process of hiring someone to remove exterior siding and interior molding around a window.

I would not be surprised if they were not installed correctly and we have insulation issue. We are missing insulation in several places in our home. Also, we might not have a top plate installed for an interior wall. The scan showed cold air from the attic infiltrating an interior wall all the way to the floor.

Thanks again!
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