As with most construction and renovation work, there is no replacement for experience. There is also great value in becoming educated in subjects like the physics of materials and fundamentals of building science.

From a practical point of view, a Building Envelope Specialist is someone who has broad experience in new construction and renovations, both on the ground installing and in the planning and management of projects. This specialist will also have a working knowledge of materials used as control layers and the proper sequencing for maximum effectiveness.

This person will also understand the main principles of building science: how heat, air and moisture behave in a structure and how they should be managed. They will know how to communicate with other experts in building performance, such as Energy Advisors and HVAC technicians, in order to create the optimal conditions for comfort and energy efficiency.

A Building Envelope Specialist may have the following attributes and experience:

• 3 to 5 years experience installing air barriers, insulation, flashing and windows and doors;
• 5+ years experience in construction and renovation;
• Specific manufacturer certifications for installing air barrier, insulation and sealant products;
  
• Understanding of performance targets such as airtightness, optimized R-value and indoor air quality;
• Experience working with other trades and technicians to achieve performance goals.

TOOLS & MATERIALS

The most common materials that a Building Envelope Specialist works with may include the following:

• Insulations of all types - mineral wool and fibreglass, rigid foam boards, spray foam, cellulose and others;
• Air barriers of all types - polyolefin 'housewrap', airtight drywall, smart air and vapour barrier fabrics, liquid applied and atomized sprays;
• Vapour barriers and retarders - polyethylene, VDR paints and smart air / vapour barrier fabrics;
• Sealants and membranes - caulking, acoustic sealant, peel-and-stick membranes, tapes, low expansion foam insulation and others;
• Flashing materials - galvanized steel and aluminum, vinyl and PVC;
• Window and door units - exterior opening units for various locations in a building, including attic hatches.
  

The common tools that may be used for this kind of work include:

• Construction safety PPE
• Carpentry tools;
• Ladders and scaffold;
  
• Metal brake bending machines;
• Fasteners and equipment for attaching barrier materials - staplers and nail guns;
• Drywall and paint installation equipment.

TRAINING & CERTIFICATIONS?

The path toward being a Building Envelope Specialist might be quite different from one person to the next. There's not really one exclusive way to get there, but there are some common starting points and training to take along the way.

Training to become a Building Envelope Specialist may include some of the following:

• Vocational trades training or Apprenticeship related to construction and home building;
• Building Science education at college or university level;
• Builder or designer training in Net Zero, Passive House, LEED, Energy Star or R2000;
• Studies in architecture or engineering;
• Product use and installation training from manufacturers of construction materials;
• Volunteer building work with organizations like Habitat for Humanity.