We are about to complete construction of our whole house renovation. We have an entire house of new Sierra Pacific windows and doors (25 windows of various sizes and 2 doors). These windows and doors replace 8 year old Andersen 200 slider windows, Andersen 400 french doors and Andersen 200 sliding door. We looked at various brands - from Marvin, Pella, Andersen, Kolbe, etc. We ultimately went with Sierra Pacific for a variety of reasons - our contractor, who used to build high end home developments, put in a lot of Sierra Pacific windows, and had overall positive experiences with them. Our architect, who designs mainly high end homes, specs out a lot of Sierra Pacific windows and has SP windows in his home, and had no problems with them (except for the handles). Ironically, our architect did spec out Andersen 400s in our house (that was when we were going to reuse the Andersen 200s in the back of the house). We were able to get the look that we wanted (simulated divided lights) in the grid pattern that we wanted, at a budget that was workable for us (given that we are now 15% over budget on our construction, I'm glad we didn't spend more for the windows). Finally, when we compared window performance against various brands, they were within range of each other, and they were going to work ok in our relatively mild climate here in the SF bay area. I also stopped by the SP showroom and customer tech support center one day and talked to a lady who handles some of the customer calls. She told me that in general, most of the calls she takes in are for customers who had issues with the handles, weather stripping, etc. or minor things (of course, take that with a grain of salt since she works there and can tell me whatever she wants to disclose). However, her comments, along with my home developer turned contractor (in the recession) experiences in installing many of these windows, have helped us feel comfortable. The windows are in our house now, although we are still a few weeks away from completion. Some things in general about the windows from my personal experiences 1. on the doors, handle operation felt different that with my previous Andersen 400 french doors. It wasn't as smooth, and had a more clunky feel to it. The same was observed with the operation of the locking mechanism. It wasn't a rough operation, it just didn't feel as "substantial" as my old Andersen. This is not a comment about the quality, longevity, but more about the feel as compared to my old Andersen. 2. We had casement windows and awning windows (no sliders). We never had casement windows before, so I have no basis of comparison with our old Andersens. The crank operation was easy and smooth, although I wasn't crazy about the handle design. It also was very easy to latch the window shut once the window had been closed. the handles were not all solid construction, but rather metal sheet that has been rolled and formed into a handle. That may be why the tech support person said handles was an area they get calls on. 3. One thing I wasn't sure about, and it seemed a little suspect to me, was their "leaf" weatherstripping at the bottom of the window. It didn't seem to me that it could keep out the drafts, as it looks rather insubstantial... I realize with the windows latched shut (especially with casement windows), you would get a pretty solid seal against the elements, regardless of this leaf weatherstripping. That said, I don't know have any first hand experience with this potential area (since we haven't moved into the house yet). 4. at the corners where the aluminum cladding comes together, the joints were in general well done. I noticed a couple of windows where it wasn't as nice and clean looking as the others, but it does seem to be well sealed. 5. a little bit of a nit, but in most of the windows, the mounting flanges were powder coated just like the aluminum cladding on the window frame. There were a couple of windows where in one section of the mounting flange the powder coating was thin or not there. The mounting flange is going to be hidden and covered by the trim boards, so it doesn't matter anyway, but I would have expected the painter to just paint it so that every square inch of the cladding, whether hidden or not, is coated.. (that's just me). 5. Overall, the windows seem well built, although I can't comment on the design. So far, I'm relying on my architect and builders experiences on longevity and it seemed to be working ok for them. 6. Although SP offers a lot of different color options for the aluminum cladding, I found that in our case, we weren't looking for a radical color and that we could have found something similar with the other windows that would have worked for us. I think for us, it came down to how much more we were going to get for the additional cost of going to Marvin and whether that would be worth it to us, versus spending that money somewhere else for an upgrade. Ultimately, we felt that given our climate and the window design we had, the SPs were good enough and that going with other windows wouldn't have given us a noticeable increase in value. Hope this helps.

what did you end up going with? I live in MN. And we are building in Eagle, Colorado. We are just now having to decide on windows and SP Aspen 2.0 are the architect and builders top choice. Interestingly, we have Marvins in our Minnesota home that was built 25 years ago and we've had to replace them all (wood double hung and casements). They were the highest end marvin available when we built. The sashes rotted. We did an addition 12 years ago, used the "new improved" clad exteriors in the casements and.... yep... still have rot issues after only 12 years. Suffice it to say, I'm starting to think nothing lasts more than 20 years, so why pay extra? Any others with this experience? (We, too, love the SP fit and finish and I think we'll be going with them -- though we also bid the Anderson 500 series and they came in slightly less than the SP's)

I just put in four sp sliders in my house- four eight foot, one six foot. Easy to install, they work great. Mine are aluminum clad.

@millworkman - thank you! I agree. I’m not comfortable with the SP and the entire time we were designing the “base” was always discussed at the A400 which is why we were surprised to see this new brand. I know the market is insane right now and prices have skyrocketed but definitely want something quality in our custom build. Other brands I know of in area (without having had a detailed discussion with a dealer) are Pella and Marvin. Thoughts on those brands in comparison to other two?