Curtain walling systems are divided into two categories based on how they are installed. You must select the option that best meets your needs. They not only strive for pressure equalisation between the outside and inside environments, but also ensure that the building's interior is protected from severe weather. If you need a stick system curtain wall installation, give Nationwide Curtain Wall a call now for a free estimate. They will answer all of your questions with their staff of qualified professionals.