Acoustic Flooring Underlayment — IIC 55+ for Canadian Condos
Acoustic underlayment is the layer between subfloor and finished floor that determines whether your downstairs neighbor hears your footsteps. For condo buildings with bylaws (typically IIC 50+, often IIC 55–60), the wrong underlayment fails inspection. Yaletown Floor stocks 13 acoustic underlayment SKUs rated from IIC 50 to IIC 71 — cork, IXPE foam, rubber composite, and Quiet Walk Plus. Free samples Canada-wide.
Why acoustic underlayment matters
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Condo bylaw compliance — Most Canadian condo boards require IIC 50+ for floating floors above occupied units. Premium buildings require IIC 55–60. Submit the underlayment spec sheet to your board for approval before installation.
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Real-world comfort — Footstep transmission to the unit below is dramatically reduced. Particularly valuable in second floors with bedrooms below.
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Drum-effect reduction — Acoustic underlayment also reduces the hollow drum sound you hear ON the floor from above. Useful in second-floor offices and master suites.
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Compatibility across floor types — Most SKUs work under laminate, engineered hardwood, SPC, and LVP. Verify per product for manufacturer warranty compatibility.
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Moisture barrier integration — Many premium SKUs include integrated vapor barrier — required over concrete subfloors.
Acoustic underlayment SKUs at Yaletown Floor
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Quiet Walk Plus (IIC 71) — The gold standard. Felt fiber with integrated moisture barrier. Toronto condo board favorite.
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Cork 3mm and 6mm — Natural antimicrobial cork. IIC 51–58 depending on thickness.
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IXPE foam — Crosslinked polyethylene. Thinner profile, IIC 50–55.
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Rubber-cork composite — Highest acoustic performance. Required by stricter condo boards. IIC 60+.
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MP Global QuietWalk — Recycled fiber base, integrated vapor barrier, IIC 65.
Choosing acoustic underlayment — solved
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"What IIC does my condo require?" Most Canadian condos require IIC 50 minimum. Premium buildings require IIC 55–60. Check your bylaws or submit the underlayment spec sheet for board approval.
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"Cork or rubber?" Cork for natural antimicrobial and lower cost ($0.80–$1.20/sq ft). Rubber composite for highest acoustic performance and stricter condos ($1.20–$2/sq ft).
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"Concrete subfloor?" Required: integrated vapor barrier or separate 6-mil poly. Without it, concrete moisture migrates into the floor and causes warping.
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"Already attached to my floor?" Many premium laminate and SPC ship with attached cork or IXPE underlayment. Don't double up — voids the warranty.
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"Free shipping?" Free Canada-wide delivery on orders 1,000+ sq ft.
Frequently asked questions
What IIC rating do I need for a Canadian condo?
Most condos require IIC 50 minimum. Premium and newer buildings often require IIC 55–60. Quiet Walk Plus (IIC 71) exceeds nearly every Canadian condo bylaw.
Cork vs IXPE foam — which is better?
Cork is natural, antimicrobial, and has better acoustic performance per millimeter. IXPE is thinner, cheaper, and synthetic. For condo bylaw compliance, choose cork or rubber composite.
Can I install acoustic underlayment under hardwood?
Yes — most acoustic underlayments work under floating engineered hardwood. Glue-down hardwood doesn't use underlayment — the adhesive bonds directly to the subfloor.
How much does acoustic underlayment cost?
$0.50–$2 per sq ft. Premium rubber-cork composite at the top of that range; basic IXPE foam at the bottom.
How do I order a sample?
Free samples on every acoustic underlayment SKU — click "Order Sample" on any product page. Ships Canada-wide in 2–3 business days.
Choosing an underlay
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Foam and IXPE: the everyday choice under laminate and click vinyl. Thin, inexpensive, easy to roll out.
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Cork: naturally sound-absorbing and dimensionally stable, popular under engineered hardwood.
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Rubber: the highest impact ratings, used where a board demands a strict IIC number.
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Attached pad: many SPC vinyl planks already have an IXPE pad bonded to the back. Don't add a second underlay unless the manufacturer allows it, or the floor can flex and the locking system can fail.
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Moisture: over concrete, use an underlay with a vapour barrier, or lay 6 mil poly first.
Before you order
Ask your building for its written sound requirement, check whether the floor is a glue-down or floating install, and measure the room plus 5% for trimming. We can send the spec sheet you need for strata approval before you buy.
Delivery across Canada
Orders ship from our Burnaby, BC location, with delivery across Metro Vancouver and freight to Alberta, Ontario and the rest of Canada. Shopping by region? See flooring in Vancouver or hardwood in Toronto and the GTA. Call 1 (604) 558-2195 for help with quantities or specs.
Related: transitions and mouldings, flooring adhesive, and cork flooring for a naturally quiet floor.
Frequently asked questions
What IIC rating do condos require?
Most Canadian buildings require IIC 50 or higher, and many newer buildings ask for 55 to 65. Always check your own strata or condo bylaws in writing.
Can I use underlay with SPC vinyl that has an attached pad?
Usually no. Adding a second layer lets the floor flex, which can break the locking system. Follow the manufacturer instructions on the product page.
Does acoustic underlay stop noise from the unit above?
No. Underlay reduces the sound your floor sends to the unit below. Noise coming down through the ceiling has to be handled in the ceiling assembly.
Do I need a vapour barrier over concrete?
Yes. Use an underlay with a built-in vapour barrier, or install 6 mil poly under it, to protect the floor from slab moisture.
