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Building Enclosure

The fundamental purpose of the building enclosure, also called the building envelope, is to separate the indoor environment from the natural elements.  The building enclosure includes wall, roofing, skylight, window, door, and foundation systems.

The current focus on energy efficiency demands higher performance requirements for today’s building enclosures than those of the past.  Building enclosure defects resulting in water leakage, air infiltration, or condensation can result in increased energy consumption, increased maintenance costs, property damage, and loss of use.

A building enclosure’s basic components are not complicated:  the Cladding is the visible surface; the Drainage Plane keeps water out; the Air Barrier keeps wind out; the Vapor Control Layer regulates condensation; Thermal Insulation keeps heat in when it is cold out and out when it is hot out; the Structure supports the assembly.  Complexity arises in integrating the components into a high-performance system; carefully detailing each element properly.

CTLGroup’s experts evaluate existing building enclosures, design solutions, and prepare drawings and specifications to repair defects, restore the enclosure’s integrity and aesthetics, or even retrofit new cladding or roofing systems to existing buildings.

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