The design of facades insulating-envelopes based on rectangular configurable panels is addressed via guillotine cuts. This design is treated as a two-dimensional orthogonal packing problem which considers the specific geometry and structure of each facade. Among the various packing algorithms dedicated to this particular design problem, the cutting approach is the most appropriated to design aesthetic insulating envelopes by including architects aesthetics criteria. The proposed solution exploits human knowledge and expertise to provide consistent envelopes solutions, in competitive computational time and with aesthetics aspects. Our work aims to assist architects in decision-making.