Guardian is a full service residential and commercial construction company. We specialize in full exterior services: Roofing, Siding, Windows, Carpentry, & Masonry. Guardian is competitively priced and services all of South Eastern Wisconsin, Milwaukee-metro area. Our focus is having a close attention to details on each and every project we complete. Guardian Offers: Largest Selection of Products and Price Options; Lifetime Warranties and our Best Price Guarantee; Easy, no pressure shopping experience; Large selection of payment and financing plans.