The vertical exterior envelope of a building refers to the vertical exterior walls, which are made up of several essential components, namely the load-bearing structure (wood, concrete, or steel walls) and the exterior cladding . The latter can be made of various materials: stone, brick, masonry , concrete blocks, acrylic cladding, aggregate, sheet steel, vinyl or aluminum siding, wood cladding, etc.
rotten structure
Certain elements must be installed inside or on the two main components mentioned above (structure and exterior cladding), such as weep holes, steel angles, steel lintels, air barrier membrane, vapor barrier, insulation , sealing joints, doors, windows, etc.
As part of a visual inspection of the vertical exterior envelope (exterior walls), the engineer verifies the current condition of all visible and accessible components and writes a report including his findings and recommendations. In his report, the engineer describes the deficiencies noted and the importance of each deficiency. In addition, he recommends the necessary maintenance, repair or replacement work relating to the components of the building envelope. This by taking into consideration the degree of deterioration, the cause and the useful and residual life of these components.
If the engineer deems it necessary, they will conduct a thorough examination of one or more issues. This involves drilling exploratory holes in the brickwork to assess the condition of the structure behind the bricks in specific locations. If necessary, the engineer will then notify the client or the condominium association, requesting that they hire a specialized contractor to make the required cuts or holes in the facades. These exploratory holes can be located either on the exterior or interior, and the engineer will inspect the building envelope components through them. Following this, they will prepare a report detailing the observed deficiencies (e.g., structural rot, mold growth, absence of an air barrier, condensation , signs of water infiltration, insect infestation , etc.). Finally, the engineer will propose the appropriate solution.
Rotten wooden structure behind the acrylic coating