We are very pleased with the quality of the second storey balcony deck (approximately 450 sq ft), that Demex built for us using composite material and a waterproofing system for the area underneath. In addition to the final result, we were most pleased with the professional manner in which the work was completed. It is evident that Art and his team are skilled and experienced. Our emails were answered promptly. The drawings they prepared for us allowed for a timely building permit - no follow-ups were required. Art was patient and helpful as we explored our material selection options. They were highly organized with the delivery of materials - no delays at all. They kept the job site very tidy. They worked quietly and efficiently, accomplishing more than expected each day on site. Our experience working with Demex was pleasant and easy, with a great result. We would recommend Demex without hesitation based on our experience.