ARU soundproofing — STC 50, RC channel, Green Glue, OBC.

# Soundproofing for Basement Apartments in Toronto and the GTA

Soundproofing for basement apartments is required for tenant comfort and legal ARU compliance. We use RC1 hat channel, Green Glue between 5/8" gypsum layers, mineral-wool insulation, and acoustic caulk at all perimeters. Target STC 50 between dwelling units per OBC 9.11.

2026 GTA Pricing Tiers (real ranges, not loss-leaders)

Basement tier. Ceiling-only RC channel + 5/8" drywall above existing assembly, mineral wool batts — $9–12/sqft, achieves ~STC 42. This is the entry-point install most homeowners start at — minimum viable spec, brand-name parts, professional install but no upgrades on accessories or finishes.

Mid tier. RC channel ceiling + Green Glue sandwich, mineral wool R-22 in joist cavity, acoustic caulk perimeter — $14–18/sqft, achieves STC 50. The volume sweet spot in the GTA — covers what most clients actually want once they have walked through the showroom or compared brands online. Quoted with full material list, lead time, and warranty.

Premium tier. Double-stud wall isolation between bedrooms, decoupled ceiling, acoustic doors, sound-rated outlets and recessed lights — $22–28/sqft, achieves STC 55+. Premium is rarely just a bigger version of mid — it usually involves engineering or specialty trades (structural letter, custom fabrication, branded finishes, smart-home integration). We carry premium-tier suppliers on retainer to compress lead time.

GTA Neighborhood Notes

All Toronto basement ARUs require STC 50 minimum to be legal. Resale-targeted upgrades in Forest Hill, Lawrence Park go further (STC 55) for guest suites. We attend service calls and on-site quotes across the Toronto core (M postal codes), Etobicoke, North York, Scarborough, East York and the inner 416, plus 905 markets (Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Aurora, Newmarket, Oakville, Burlington, Pickering, Ajax). Same-week quotes typical inside the 416; 1–2 week scheduling for outer 905.

Common Questions Answered Up Front

STC 50 means what? Loud conversation in lower unit is barely audible upstairs. STC 55 inaudible. RC channel vs Genie clips? Genie clips slightly better STC, more expensive. RC channel — 95% of the result at 60% of the cost. Drop ceiling acceptable? No — drop ceiling rigid panels are STC 25 max. Never used in ARU.

What to Expect on the Day

We arrive at the agreed window, walk through scope on site, confirm the written quote against any field conditions we discover (rare but possible — older Toronto houses surprise everyone), and proceed only after written sign-off on any change order. Materials sourced from established GTA suppliers — Lowe's Pro, Home Depot Pro, Brock White, Roman Stone, Boehmers, Lansing, Tim-BR Mart and direct from manufacturer reps for specialty items. We protect floors with Ram Board, stair treads with kraft paper, walls with corner guards, and HVAC returns with filter media for the duration of the work. Daily cleanup before we leave the site, and final shop-vac and microfibre at job completion. Photos before, during and after are emailed to you the same day.

Permits, Inspections and Documentation

Toronto, Markham, Vaughan, Mississauga, Oakville, Brampton, Richmond Hill, Aurora, Newmarket — we pull permits in all of them and maintain current registration with each municipality's contractor portal. ESA electrical notifications (live or dedicated permits), TSSA gas permits, Toronto Building Tier 1 / Tier 2 building permits, and Toronto Water connect-disconnect permits are coordinated as required. We never start permit-required work before the permit is in hand and posted on site. Inspection coordination is part of our service — we attend the rough-in and final inspections so the trade is represented on site if the inspector has a question.

Related Services in This Category

Searches commonly clustered with this service in the GTA include basement soundproofing toronto, STC 50 basement gta, green glue installer, RC channel basement. Where the scope overlaps another category (electrical, plumbing, structural), we coordinate the sub-trade on a single quote rather than handing you a list of subcontractor phone numbers. One PM, one schedule, one invoice.

Bottom Line

Flanking transmission (through ductwork, plumbing chase, electrical penetrations) kills most basement soundproofing. We pre-plan duct silencers, sealed pipe penetrations, and back-to-back outlets. If you are comparing quotes, the right questions are: which brand and which sub-model, what is the warranty (parts vs labour), what permits are pulled, and what is the cleanup spec at completion. Apples-to-apples comparison is hard in the GTA renovation market — we are happy to walk through any competing quote line-by-line so you understand exactly what the price difference covers.

Quote, Schedule, Done

Most soundproofing for basement apartments jobs in this category are quoted within 24 hours of the site visit and scheduled within 1–3 weeks depending on material lead times (longer for special-order or custom-fabrication items). We carry $5M general liability insurance, full WSIB coverage on all employees and trades, and a workmanship warranty appropriate to the trade — typically 2 years labour, plus manufacturer warranty on parts. References from past GTA clients available on request, with addresses you can drive by.