Condo Flooring Rules: Underlay and Sound Ratings
Short answer: Ask for your building’s written flooring policy first. It usually sets the underlay rating, work hours and insurance needs.
Why condos have rules
Hard floors transmit sound to the unit below, so condo corporations set rules to protect neighbours. Those rules are part of your building’s bylaws or policies.
Sound ratings
Two common measures are IIC, which describes impact noise such as footsteps, and STC, which describes airborne sound. Buildings often set a minimum rating. The rating depends on the whole floor system, including the slab, the underlay and the flooring.
Steps to follow
- Request the flooring policy and approval form from the property manager.
- Choose planks and underlay that meet the stated rating.
- Submit product details and installer information for approval.
- Book elevators and loading space.
- Confirm work hours and cleaning rules.
Documents to keep
Keep the approval, product sheets and the sound rating data. They can help if a neighbour complains later.
