What is building expertise?

Expertise is a more in-depth approach than visual inspection; it is for this reason that it must be carried out by a building professional.

Expertise is needed in case of particular problem in the building such as:

  • Air infiltration, heat losses, cold floors;
  • Mold, humidity, condensation, water infiltration;
  • Shears in masonry;
  • Hidden defects in the structure or the building envelope;
  • Sagging foundations, cracks, pyrite;
  • Modification in the structure. etc .;
Expertise, lack of ventilation in the attic

© Condensation in the attic

Expertise by an engineer

To verify and analyze the deficiencies and to allow him to give his opinion as to the necessary corrective measures , the engineer can:

  • Practice exploratory holes;
  • Use sophisticated equipment (hygrometer, infiltrometer, infrared camera, laser);
  • Perform a watering test;
  • Request additional laboratory analysis (pyrite, mold, soil bearing capacity, concrete capacity, etc.);

Following the visit, the engineer transmits his findings and recommendations with a detailed report and supported by photos, plans and diagrams. (according to the mandate).

Onesta Building Council

Onesta engineering consulting professionals offer expertise for the following components or issues:

  • Vice caché : expertise and counter-expertise, testimony to the court, detailed report with digital photos, articles of the Construction Code and explanatory diagrams.
  • Siding : masonry, acrylic plaster, aggregate cladding, vinyl siding, aluminum cladding, wood cladding, etc.
  • Roof and roof : asphalt shingles, asphalt and gravel, elastomer, metal roof, sloped roof, flat roof, cathedral ceiling, attic, ventilation, condensation, insulation.
  • Thermography : infrared camera, thermal and energy losses, thermal resistance, cold floors and walls, insulation, air infiltration, humidity and condensation.
  • Water infiltration : location of water infiltration using a hygrometer and infrared camera and watering tests to identify the source.
  • infiltrometry : detect air infiltration points using an infiltrometer, an infrared camera and a smoke bulb.
  • French drain : examine the video of the drain camera, and analyze the deficiencies of the French drain (poorly installed drain, crushed or clogged, etc.)
  • Foundation and level reading : subsidence, cracks, crumbling of concrete, block foundations of concrete and cemented stones (rubble), piles, flooding.
  • Humidity and condensation : water infiltration, wood rot of the structure, mold, moisture of materials, ventilation in the attic.
  • Insulation: heat loss, condensation, mold, vapor barrier, air barrier, basement insulation, wall and ceiling insulation, attic insulation.
  • Masonry and facades : Chantepleures, steel lintels, bulging bricks, mortar joints, shear in masonry, waterproofing flashings.

Consult our achievements

Building expertise, wooden structure damaged by carpenter ants

© Wooden structure damaged by carpenter ants