Hi Selb, You made a mistake. We actually installed our windows in Sept. 2003, it has been three years. Nope, I am a software engineer in the Silicon Valley. I do not sell windows. I can carry on a long Object Oriented Design conversation longer than I can say much about Sash and frame, just read some of my very none-technical window responses. I registered here in 2003 to ask for help and advice just like other consumers. Unfortunately, no one here answered my questions then. So I decided to be as helpful and as truthful as I can once we have experience with the windows we looked at and purchased. So, just like others here, I am trying to help. I never posted any "response" or "advice" until this year. Even then, I do not dare call my responses "advice" because I am not professional windows person (except Microsoft Windows :-)). They are just personal experience and what we learnt from local windows retailers. I understand many here want to "out" windows salesmen, I applaud your effort. In my case, you are wrong. I challenge you to find a post from me dating to 2005, 2004, 2003. And I challenge anyone to find any of my current posts that "sells" Marvin. We like what we like, we dislike what we dislike, that is not selling, that is telling it like it is. I will continue to share experience good or bad as we have them. You can choose to read them or ignore them.

I selected fiberglass because in theory it can be refinished/painted. I have owned a house full of Integrity Windows with wood interior for a couple of years and am very pleased with the product. I have a mix of Casement, Out Swing French and Sliding doors. My painter was able to stain the insides to match our wood very well. I have casements and they appear to be very tight. On recent blustery days with 30 mile per hour gusts, there was not even the slightest perception of draft and most of my windows do not have drapes. Below is a link to our house under construction a couple of years ago. The regulars probably get tired seeing this link, but it shows the product well. http://ths.gardenweb.com/forums/load/windows/msg04131741864.html Here is a link that might be useful: Link to Integrity Review by lkbum

Tempered/Safety glass requirement on a Double hung window. We have a couple windows less than 18" from the floor. However the way we are reading the code we woudl not need tempered glass. As we do not meet all 4 requirements under Section 7 or R308.4 ( The square footage of the individual pane is less than 9 sq ft) or are we reading this wrong. We have asked our Marvin dealer without any reply and have also reached out to our Architect as he did not denote the windows to require Tempered Glass Is each Sash is own individual pane or do both sash's get added together?

Our window shopping saga continues.... We are now considering the Marvin Infinity line for our large sliding doors and kitchen replacement window. Does anyone have Marvin Infinity installed in their home? If so, particularly in the Southwest, how has it held up? Are the frames durable? Is the slider still working correctly? Thanks for any input!