They were great! From seeing mixed reviews and hit pieces about Les Grumdahl, I had my doubts. I ultimately chose them because I wanted Marvin Infinity windows and their prices were quite reasonable compared to other quotes I got. They did not disappoint! From working around the historic details and quirks of my old house to my various customization requests, I couldn’t be more pleased. Tim was phenomenal to work with from beginning to end.
October 2025
They installed 12 Marvin Infinity replacement windows in our house, most of the windows. They did a good job and finished in less than a week, working every business day. The person who did the estimate (Tim) and the workers were friendly and courteous. They cleaned up well after themselves both inside and outside. The only issue we had is their timeline for starting the job, ours started months later than originally stated. My suggestion to Les Grumdahl employees is to over-estimate the time to start rather than under-estimating. Customers will be more happy if you show up earlier than expected rather than later.
September 2025
I couldn't be more satisfied with my choice of window, Marvin Infinity, and the perfect installation performed by the crew at Les Grumdahl Window & Siding. If you're looking for one of the best quality windows that money can buy, lol at the Marvin Infinity line. Fiberglass construction, coastal rated, Low E3.
They were great! From seeing mixed reviews and hit pieces about Les Grumdahl, I had my doubts. I ultimately chose them because I wanted Marvin Infinity windows and their prices were quite reasonable compared to other quotes I got. They did not disappoint! From working around the historic details and quirks of my old house to my various customization requests, I couldn’t be more pleased. Tim was phenomenal to work with from beginning to end.
They installed 12 Marvin Infinity replacement windows in our house, most of the windows. They did a good job and finished in less than a week, working every business day. The person who did the estimate (Tim) and the workers were friendly and courteous. They cleaned up well after themselves both inside and outside. The only issue we had is their timeline for starting the job, ours started months later than originally stated. My suggestion to Les Grumdahl employees is to over-estimate the time to start rather than under-estimating. Customers will be more happy if you show up earlier than expected rather than later.
I couldn't be more satisfied with my choice of window, Marvin Infinity, and the perfect installation performed by the crew at Les Grumdahl Window & Siding. If you're looking for one of the best quality windows that money can buy, lol at the Marvin Infinity line. Fiberglass construction, coastal rated, Low E3.