Sigma Exteriors is the premier roofing, gutters, siding, and window replacement contractor in the Wisconsin Area. We are a locally owned and operated company that has received national recognition for our unique customer-first processes and procedures
We make the process of home-improvement easy and worry-free. Our company name and logo says it all. ‘Sigma’ in Sigma Exteriors is derived from the management philosophy called ‘6-Sigma’. Basically, 6-Sigma is a process of constant, never-ending improvement leading to 100% Client Satisfaction."
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