Soundproofing Between Units

Soundproofing Between Units — Walls, Floors & Ceilings

Whether you're converting your home into a legal secondary suite or finishing a basement apartment, noise transfer between units is one of the most common — and most disruptive — problems homeowners face. Entrepreneur Général Gatineau specializes in professional soundproofing installations between floors, walls, and ceilings, giving both you and your tenants the peace and privacy you deserve.

Our team uses proven acoustic assemblies, resilient channels, mass-loaded vinyl, and high-density insulation to dramatically reduce impact and airborne noise transmission in multi-unit residential properties across Gatineau and the surrounding area.

What Our Soundproofing Service Includes:

• Acoustic Assessment: We evaluate your existing structure to identify the primary noise pathways — whether through floor joists, shared walls, or mechanical penetrations — before recommending the right solution.
• Resilient Channel & Decoupled Ceiling Systems: We install decoupled assemblies that break the rigid connection between surfaces, dramatically cutting structure-borne sound between floors.
• Mass-Loaded Vinyl (MLV) Barriers: High-density MLV layers are added within wall and floor assemblies to block airborne noise such as voices, music, and television.
• High-Density Batt Insulation: Acoustic-grade mineral wool or fiberglass batt insulation is fitted between studs and joists to absorb mid- and high-frequency sound before it travels through the structure.
• Acoustic Caulking & Sealing: Every gap, electrical box penetration, and pipe sleeve is sealed with flexible acoustic caulk to eliminate flanking paths — the hidden routes sound uses to bypass your insulation.
• Double Drywall with Damping Compound: We apply a viscoelastic damping compound between two layers of drywall for superior STC (Sound Transmission Class) performance on shared walls and ceilings.
• Flooring Underlayment Upgrades: Where floor finishes are being replaced, we install acoustic underlayment beneath hardwood, laminate, or tile to reduce impact noise (footsteps, furniture movement) reaching the unit below.

Benefits of Professional Soundproofing

• Tenant Retention: Quiet, private units attract and keep quality long-term tenants, protecting your rental income.
• Increased Property Value: A properly soundproofed secondary suite is a compelling selling feature for any Gatineau property.
• Compliance & Comfort: Meeting or exceeding the National Building Code of Canada acoustic separation requirements keeps your project above board and your occupants comfortable.
• Reduced Conflict Between Units: Less noise means fewer complaints, less stress, and a healthier landlord-tenant relationship.
• Works Alongside Other Renovations: Soundproofing is most cost-effective when done during a basement finish or gut renovation — we coordinate it seamlessly with framing, electrical, and drywall crews.

Our Soundproofing Process

1. Free On-Site Consultation: We visit your property, listen to your noise concerns, and inspect the shared assemblies between units.
2. Customized Acoustic Plan: We design a layered soundproofing strategy matched to your budget, your structure type, and the level of acoustic separation you need.
3. Permits & Coordination: As your general contractor, we handle any required building permits and coordinate all trades involved in the project.
4. Installation: Our experienced crew installs the full acoustic assembly — decoupling, insulation, MLV, damping compound, and drywall — with clean, professional finishes.
5. Final Inspection & Handover: We walk through the completed work with you, confirm everything meets the agreed specifications, and leave the site clean and ready for occupancy.

Frequently Asked Questions

How much soundproofing can I realistically expect between a basement apartment and the main floor?

With a properly installed decoupled ceiling system, acoustic batt insulation, and double drywall with damping compound, you can typically achieve an STC rating of 55–65, which is considered excellent for residential use. At STC 55, loud speech is barely audible and most music is not intelligible. Results vary depending on existing structure and flanking paths, which is why our acoustic assessment is the critical first step.

Can soundproofing be added without completely opening up the walls and ceilings?

In some cases, yes — adding a new layer of resilient channel and drywall over an existing ceiling, or building a staggered-stud interior wall in front of an existing shared wall, can significantly improve acoustic performance without full demolition. However, the most effective and cost-efficient results are achieved when soundproofing is integrated during a broader renovation when walls and ceilings are already open. We'll always give you an honest assessment of what's achievable within your specific constraints.

Does soundproofing also improve fire separation between units?

Absolutely. Many of the same assemblies that deliver strong acoustic performance — thick drywall, sealed penetrations, and mineral wool insulation — also contribute to the fire-resistance rating required between dwelling units under the National Building Code. When we design your soundproofing assembly, we always cross-reference fire separation requirements so that a single installation satisfies both objectives, saving you time and money.

Serving Gatineau and Surrounding Areas

We provide soundproofing between units for homeowners and investors throughout the greater Gatineau region, including Hull, Aylmer, Buckingham, Masson-Angers, Deschênes, Pointe-Gatineau, Lucerne, and Val-Tétreau. Whether your property is a heritage duplex in Hull, a newly built home in Aylmer, or a bungalow in Pointe-Gatineau being converted into a legal suite, Entrepreneur Général Gatineau has the experience and the materials to get the job done right.

Contact Us

Explore our complete renovation and legal suite services by visiting https://entrepreneurgeneralgatineau.com/en .

Ready to stop the noise? Fill out our quick form — get your free soundproofing quote in no time!