What's the price range to soundproof a garage workshop so power tool noise stays contained?

Soundproofing a garage workshop to contain power tool noise typically costs $6,000 to $20,000 in Ottawa, depending on garage size, current construction, and how much noise reduction you need. A table saw produces roughly 95–110 dB, a router 95–105 dB, and a planer 100–115 dB — these are serious noise levels that can easily disturb neighbours and violate the City of Ottawa's noise bylaw (By-law 2017-255), which restricts construction-type noise in residential areas to specific hours. Effective containment requires a comprehensive approach, not just a layer of foam on the walls.
For an attached garage — the most common scenario in Barrhaven, Kanata, Orleans, and Stittsville — the shared wall with the house is your first priority. Power tool noise transmitting into the living space through this wall is typically the homeowner's primary complaint. A proper treatment involves filling the stud cavities with Rockwool Safe'n'Sound, installing sound isolation clips with hat channel, and applying double layers of 5/8-inch Type X drywall with Green Glue compound between them. This assembly on the shared wall alone runs $3,000 to $6,000 depending on wall size and can reduce sound transmission by 20–25 dB — enough to make a screaming table saw sound like a distant hum from inside the house.
Addressing the Full Envelope
The shared wall is only part of the picture. Sound escapes through every weak point: the garage door (by far the weakest link, offering almost zero sound isolation), standard hollow-core entry doors, uninsulated ceiling joists if there is living space above, and any windows. Replacing or upgrading the garage door is often impractical and extremely expensive, so a more cost-effective approach is to build an interior sound barrier wall across the garage door opening — essentially a stud wall with full acoustic treatment that you remove only when you need vehicle access. This adds $2,000–$5,000 but dramatically improves containment.
For the ceiling — critical if bedrooms are above the garage — a full isolation clip and double drywall assembly runs $10–$20 per square foot. A standard two-car garage ceiling of roughly 400 square feet would cost $4,000–$8,000 for comprehensive treatment. The entry door between garage and house should be replaced with a solid-core door ($300–$600) fitted with compression weatherstripping and an automatic door bottom ($100–$200) for a proper acoustic seal.
Ottawa's climate adds a practical consideration: if your garage is unheated, winter temperatures will affect both your work comfort and the performance of adhesive-based products like Green Glue, which needs temperatures above 10°C to cure properly. If you plan to heat the workshop, the soundproofing insulation does double duty as thermal insulation — a genuine cost efficiency. Just ensure the vapour barrier is correctly placed on the warm side of the assembly to prevent condensation issues during Ottawa's brutal freeze-thaw cycles.
For a workshop where you need meaningful noise containment without a massive budget, prioritise in this order: shared wall with living space first, ceiling if bedrooms are above, entry door upgrade, and then remaining walls. Even a partial approach targeting the most critical surfaces can cut perceived noise by half. Sound IQ can help you find a soundproofing contractor who can assess your specific garage layout and recommend the most effective approach for your budget.Looking for experienced contractors? The Ottawa Construction Network connects homeowners with qualified professionals:HomeupgradersRenoMotion Inc.Valcor ConstructionThe Next RenoGeerts Roofing IncView all contractors →