Construction codes of Ontario

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Acrylic EIFS Mesh Windows and Openings

Acrylic EIFS Mesh Windows and Openings Note : Important step of cutting L shaped in boards for openings. Every joint should be offset Any cement-based stucco, whether in a traditional or modern style, must be reinforced as movement cracks may appear. A plastic mesh lath or tape in small corners should be embedded into the […]

Acrylic EIFS System Installation

Acrylic EIFS System Installation Oncodes.ca publishes this information for educational purposes only Note : Exterior insulation and finish system (EIFS) is a cladding system that provides exterior walls with an insulated, water-resistant and finished surface. Different thickness of foam will offer additional R-Value and the grooves in the back assures proper drainage in case of condesation […]

Air barrier and Moisture Control at Window Head and Sill

Air barrier and moisture control at window head Make the interfaces between windows, doors and skylights and wall/ceiling assemblies airtight by sealing all junctions between the polyethylene air barrier and the window, door, or skylight frame (Figures 9 and 10). Overhangs and cantilevered floors over unheated spaces or the exterior and ducts, chimney flue and […]

Air Barrier Details

Air Barrier Details Many places in the building envelope such as rim joists, tops and ends of partition walls, openings, services, vent stacks, chimneys, unusual framing details and electrical, plumbing and mechanical penetrations are prone to air leakage (Figure 6) and must be carefully sealed in a durable manner (that is for the life of […]

Air Barrier System Properties

Air Barrier System Properties 1) Sheet and panel type materials intended to provide the principal resistance to air leakage shall have an air leakage characteristic not greater than 0.02 L/(s∙m2) measured at an air pressure differential of 75 Pa. (2) Where polyethylene sheet is used to provide the air-tightness in the air barrier system, it shall […]

Building Envelope Durability

Building Envelope Durability The durability of the building envelope of wood-frame structures is directly affected by four inter-related physical processes of moisture, air, vapour and heat moving through the various assemblies. These processes act on the building envelope in different ways and with different intensities. The assemblies and materials that comprise the building envelope are […]

Chases and Recesses Maximum Dimensions

Chases and Recesses Maximum Dimensions (1) Except as provided in Sentence 9.20.7.2.(2) and Article 9.20.7.4., the depth of any chase or recess shall not exceed one-third the thickness of the wall, and the width of the chase or recess shall not exceed 500 mm. Article 9.20.7.1 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca […]