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Carpet & Flooring — Sales and Installation · Servicing All of New Jersey

Manhattan Apartments · Co-ops · Condos

Waterproof Flooring for NYC Apartments

New York apartment living comes with a unique flooring rulebook — the 80% carpet rule, building code waterproofing in wet rooms, and co-op/condo house rules that can catch new owners off guard. We install code-compliant waterproof flooring (COREtec and similar) throughout Manhattan and the five boroughs, plus ship product anywhere in the US.

What NYC Apartment Owners Need to Know

Flooring in a Manhattan apartment — especially above the ground floor — is never just about what you like. Three very real pressures push every flooring decision: your co-op or condo’s house rules, NYC Building Code waterproofing requirements for wet rooms, and the practical risk of a leak damaging the unit below. The good news: modern waterproof flooring (COREtec in particular) was purpose-built for exactly this kind of environment.

The Three Rules That Shape NYC Apartment Flooring

1. The 80% Carpet Rule

Not a city law — but in most co-op and condo house rules. Most NYC buildings require that 80% of floor area (excluding kitchens and bathrooms) be covered with carpet or area rugs to reduce sound transmission to neighbors below. Failure to comply can result in fines, mandatory remediation, and in extreme cases has been upheld as grounds for eviction in court.

Where we help: custom-bound area rugs and runners that let you keep beautiful hardwood or COREtec visible around the edges while satisfying the 80% coverage requirement. Any carpet, any size, any shape, 30+ binding colors.

Custom Area Rugs →

2. Bathroom & Wet-Area Waterproofing

NYC Building Code (BC 1210) and the Multiple Dwelling Law require bathroom floors to be waterproof with approved materials, with waterproofing extending at least 6 inches up walls (except at doors). Shower and tub walls must be waterproofed even higher — typically 6 feet above the floor or 70 inches above the drain.

Where we help: COREtec and similar engineered waterproof vinyl plank meets the letter and spirit of these requirements for bathroom and kitchen installations, with the right underlayment and perimeter detailing.

See COREtec →

3. Sound & Water Barriers for Upper Floors

If you’re above another unit, your flooring assembly has two jobs: keep your footsteps quiet and keep any water that lands on the floor out of the ceiling below. Most co-op and condo boards require a documented Impact Insulation Class (IIC) underlayment rating for any new flooring install, plus a waterproof membrane in wet rooms.

Where we help: proper acoustic underlayment selection, documented product specs for your board, and waterproof membrane installation in bathrooms and kitchens.

Why COREtec Is the NYC Apartment Answer

COREtec is a rigid-core engineered vinyl plank that is 100% waterproof from top to bottom — not just the wear layer. For a Manhattan apartment, that matters in five ways:

  1. Water-damage protection for you and the neighbor below. A dishwasher hose pops at 2am? A fish tank cracks? A radiator drips? COREtec doesn’t swell, buckle, or transmit water through its rigid core. That protects the unit below (and your liability with it).
  2. Installs over almost any substrate. In a pre-war building with uneven plank subfloors, or over existing tile in a bathroom, COREtec’s rigid core floats over small imperfections and installs without disrupting the structure of the apartment.
  3. Quieter underfoot than laminate or tile. Attached cork or foam underlayment on every COREtec plank softens footfall sound — key when you’re above another unit and subject to the noise rules.
  4. Compatible with the 80% rule. Pair COREtec with custom area rugs and runners (which we bind and deliver) to satisfy the 80% coverage requirement while keeping waterproof flooring in the kitchen and bath.
  5. Board-friendly documentation. We provide the IIC ratings, product specs, and installation method your board will ask for — so your alteration agreement goes through without back-and-forth.

Where NYC Customers Most Often Install Waterproof Flooring

Kitchens

Dishwasher leaks, fridge-line failures, small sink spills — the #1 source of water damage in apartments. Waterproof flooring contains it before the unit below ever sees it.

Bathrooms

Code-required waterproofing paired with a realistic wood or stone look. No more cold tile underfoot.

Entryways & Halls

Salt, snow, rain-slick shoes in winter. COREtec handles the NYC commuter-foot-traffic reality without the swelling laminate gives you.

Radiator Areas

Steam-heat buildings leak. A lot. Waterproof plank around radiators prevents years of creeping water damage.

Laundry Closets

In-unit washer/dryer installations need a waterproof floor underneath. COREtec is the cleanest solution.

Whole-Apartment Installs

Pair waterproof plank with custom bound area rugs for the perfect balance of modern look + 80% carpet rule compliance.

The Alteration Agreement & Board Approval Process

Most NYC co-op and condo boards require an Alteration Agreement (sometimes called an Alt-2) before any flooring install. Typical requirements: licensed contractor, proof of insurance naming the building, a detailed scope of work, product specs with Impact Insulation Class (IIC) ratings for any underlayment, waterproofing specifications for wet rooms, and work hours restricted to weekdays 9–5. We regularly navigate this process for customers and provide every piece of paperwork the board asks for.

Disclaimer: this page describes general practices under NYC Building Code, the NYS Multiple Dwelling Law, and common co-op/condo house rules. Your specific building and unit may have different or additional requirements. We are a flooring installer, not a law firm — always verify rules with your managing agent and board before starting work.

In-Home Service

New Jersey & NYC/Manhattan. Mobile Store to Your Front Door® residential sales, measure, and installation across all 21 NJ counties plus Manhattan.

Commercial Accounts

Coast to coast. We service large commercial clients (LA Fitness, Nike, IKEA, GAP, Old Navy, etc.) anywhere in the country. Contact us for commercial rollouts.

FAQ: NYC Apartment Waterproof Flooring

Is there an NYC law requiring 80% carpet?

No — it is not a city law. It is a near-universal rule in co-op and condo house rules because it protects neighbors from noise. It is enforceable through your lease or proprietary agreement, and courts have upheld building enforcement when noise complaints are documented.

Can I install hardwood instead of waterproof flooring?

Yes — but most boards require a waterproof membrane in kitchens and bathrooms regardless of what you install in the rest of the apartment. We often install hardwood throughout and COREtec in the kitchen/bath as a combined solution.

Does COREtec need glue-down installation in apartments?

In most cases no — COREtec is a floating click-lock system and installs faster (and cleaner for board noise rules) than glue-down products. Specific assemblies may vary by building.

Do you handle the board approval paperwork?

Yes. We provide product specs, IIC ratings, insurance docs, and installer licensure information in the format your managing agent will accept. We’ve been through this process with many Manhattan buildings.

How far in advance should I start?

Board approval for an Alteration Agreement typically takes 2–4 weeks. Start conversations with your managing agent early — we’ll have paperwork ready within a few business days of our measure visit.

Do you service outside Manhattan?

Yes — residential in-home service covers all of NJ plus Manhattan and the other four boroughs on a case-by-case basis. COREtec product ships anywhere in the US.

Talk to Someone Who Knows NYC Apartment Rules

We have installed waterproof flooring in Manhattan apartments across pre-war co-ops, post-war condos, modern doorman buildings, and walk-up rentals. Call us and skip the guesswork.

Sam the Carpet Man — My Way Carpet Studios

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