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Amcraft windows 3/32" glass, argon filled, low-e glass, double hung, vinyl.
Home Maintenance and Structures
Doors & Windows
Windows and Window Glass, Other Than Storm Windows (1894)
Amcraft Window
My neighbor's new low-e windows reflected heat onto my property and melted my vinyl siding.


I received this notice that information was missing from my report, risk of harm. I submitted this information with my report. I am attaching it again. This is a full engineer's report describing the danger of the windows along with documentation from several fire departments regarding fires that were cause by the windows. I am pasting some of the information below as well.

In addition, I spoke with the manufacturer directly and they fully admitted the windows cause damage, and state it isn't their problem. The conversation can be heard here: [REDACTED]

Basically, in addition to property damage and fire hazard, the windows can burn or blind someone.

1) It is concluded that the subject Low-E windows at #[REDACTED] reflected sunlight onto the vinyl siding at [REDACTED]with sufficient intensity to increase the surface temperature of the vinyl siding resulting in damage to the subject siding.
2) It is concluded that the reflected sunlight onto the north side of #[REDACTED] is seasonal with limited exposure from 2nd floor windows (see page 25) and greater exposure from 3rd floor window from October through March (see page 26). The damage to “Area 2” was likely done in February (see page 27).
3) It is also of concern that the intensity of the reflected solar energy was documented at 550 Btu/(hr-sf), 40% greater than direct sunlight. Such solar intensity could pose a profound hazard to the eyes of humans or pets. There has been significant scientific documentation that looking into the sun may cause solar retinopathy, macular degeneration, and damage to the cornea9.
“Never look directly at the sun or an eclipse! The sun’s rays can damage the retina and lead to permanent vision loss,” said [REDACTED]., chief of the National Eye Institute Consult Service10.
The reflected solar insolation from Low-E windows is of even greater concern for the following reasons:
a) A person could be exposed to solar insolation with intensity much greater than direct sunlight; exemplar testing showed solar insolation approximately three times direct sunlight.
b) A person could view the intense solar insolation while in the shadows of the home or coming from inside the home when their pupils would be dilated allowing even greater amounts of light to be transmitted into the eye. Such concerns have been documented for persons observing a solar eclipse.
Page 29 of 38
4) The exemplar window testing confirmed reports from the National Association of Home Builders and Berkely National Laboratories that the concave shape of the windows enable a focused beam of reflected sunlight that can be magnitudes more intense than direct sunlight. The concentrated sunlight of between 500 Btu/(hr-sf) to 1,050 Btu/(hr-sf) are more than sufficient to cause the absorbed sunlight to cause vinyl surfaces to exceed distortion temperatures.
Based on analysis (see page 14, 15), reflected solar insolation of 550 Btu/(hr-sf) would cause vinyl surfaces to increase in temperature above surrounding ambient temperatures by approximately 170°F; with ambient temperatures of 60°F, the vinyl siding surfaces would be 230°F.
Based on analysis, reflected solar insolation of 1,000 Btu/(hr-sf) would cause vinyl surfaces to increase in temperature above surrounding ambient temperatures by approximately 250°F; with ambient temperatures of 60°F, the vinyl siding surfaces would be 310°F.
Based on increased wall temperatures, there is concern that the reflected sunlight could contribute to electrical fires.

If you need any further information, please don't hesitate to contact me, I will supply whatever you need. I can also be reached at [REDACTED]
Incident, No Injury
I spoke with the manufacturer, told them their product damaged my house. They are aware that this can happen and say they won't do anything about it.

CPSC does not guarantee the accuracy, completeness, or adequacy of the contents of the Publicly Available Consumer Product Safety Information Database on, particularly with respect to information submitted by people outside of CPSC.