America's #1 Source Of Rockwool Insulation

With an unbeatable combination of premium materials, expert support, and lightning-fast nationwide fast delivery, we empower you to complete your projects with confidence.

NETIONWIDE FAST DELIVERY

Delivery That Doesn’t Wait

Core Insulation Supply offers super-fast and same-day service for thousands of in-stock items. Our Superhero delivery team is always on call, racing against the clock to get you the essentials—so your project never pauses

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Our Mission

To empower every builder—professional or personal—with fast access to premium building supplies, expert guidance, and smart pricing, so they can build with confidence, speed, and precision.

Our Vision

We envision a world where building projects are seamless and stress-free. From 2-hour local delivery to real-time expert support, we aim to be your trusted project partner—helping you save time, reduce costs, and achieve better results, every time.

Our Values

1- Speed & Efficiency: Same-day delivery with thousands of in-stock products.
2- Expertise You Can Trust: 30+ years of real construction experience at your service.
3- Customer First: Personalized support and honest recommendations that put your needs first.
4- Smart Innovation: AI-powered price negotiation and a future-focused shopping experience.
5- Quality Products: Access to 5,000+ top-brand tools and materials, always ready to ship.

All Products

Best Sales Product
ROCKWOOL COMFORTBATT R15 3.5 in. X 16-1/4 in. X 48 in. (65 SQFT)

ROCKWOOL COMFORTBATT R15 3.5 in. X 16-1/4 in. X 48 in. (65 SQFT)
ROCKWOOL SAFE 'N' SOUND 3 in. X 23 in. X 47 in. (60.05 SQFT)

ROCKWOOL SAFE 'N' SOUND 3 in. X 23 in. X 47 in. (60.05 SQFT)
ROCKWOOL COMFORTBOARD 80 2 in. X 24 in X 48 in (40 SQFT)

ROCKWOOL COMFORTBOARD 80 2 in. X 24 in X 48 in (40 SQFT)
ROCKWOOL COMFORTBOARD 80 3 in. X 48 in. X 96 in. (32 SQFT)

ROCKWOOL COMFORTBOARD 80 3 in. X 48 in. X 96 in. (32 SQFT)
ROCKWOOL COMFORTBOARD 80 1.5 in. X 48 in X 96 in. (32 SQFT)

ROCKWOOL COMFORTBOARD 80 1.5 in. X 48 in X 96 in. (32 SQFT)

Where Insulation Matters Most

Exterior Wall

Functions as a thermal shield, enhancing comfort and energy efficiency.

Below Grade

Controls moisture and insulates basements and foundations.

Floors and Ceilings

Minimizes noise between levels, contributing to a more comfortable living space.

Vented Attic

Prevents heat loss from HVAC systems, pipes, and ventilation ducts.

Interior Wall

Boosts sound insulation and adds fire resistance between separate rooms.

Pitched Roof

Reduces heat flow through the roof, supporting better energy performance.

Why Rockwool

Next - Level Performance, Guaranteed

Experience the unique benefits of rockwool insulation for a more efficient, safe, and comfortable home.

 Thermal Efficiency

Superior insulation value keeps indoor temps stable year-round.

Fire Safety

Non-combustible stone fibres withstand > 1,000 °C.

Water & Mold Resistance

Repels water & won’t support mold growth.

Acoustic Comfort

Dense fibres absorb noise for a quieter space.

EXPLORE ROCKWOOL PRODUCTS

Explore by Category

Find exactly what you need—fast. Browse our wide range of building materials, tools, and supplies, all organized by category to make your search simple and efficient.

ROCKWOOL Comfortboard®

Comfortboard 80 by ROCKWOOL is a firm stone wool insulation board created for use in continuous insulation systems. While it is not a structural sheathing, it enhances the thermal efficiency of the building envelope.

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ROCKWOOL Comfortbatt®

ROCKWOOL Comfortbatt is a stone wool insulation solution suitable for wood and steel framing in both new construction and renovation projects, whether residential or commercial. This semi-rigid batt features a flexible edge that compresses for a snug fit when installed in walls, attics, ceilings, and floor assemblies.

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ROCKWOOL Safe'n'Sound®

ROCKWOOL Safe'n'Sound is a stone wool batt insulation tailored for use in interior partitions, floors, and ceilings within wood and steel framing. It is ideal where enhanced fire protection and sound insulation are critical.

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Our All Products

Featured Products
ROCKWOOL COMFORTBATT R15 3.5 in. X 16-1/4 in. X 48 in. (65 SQFT)

ROCKWOOL COMFORTBATT R15 3.5 in. X 16-1/4 in. X 48 in. (65 SQFT)
ROCKWOOL SAFE 'N' SOUND 6 in. X 15-1/4 in. X 47 in. (29.9 SQFT)

ROCKWOOL SAFE 'N' SOUND 6 in. X 15-1/4 in. X 47 in. (29.9 SQFT)
ROCKWOOL COMFORTBATT R24 6 in X 16-1/4 in. X48 in. (43.33 SQFT)

ROCKWOOL COMFORTBATT R24 6 in X 16-1/4 in. X48 in. (43.33 SQFT)
ROCKWOOL COMFORTBOARD 80 3 in. X 48 in. X 96 in. (32 SQFT)

ROCKWOOL COMFORTBOARD 80 3 in. X 48 in. X 96 in. (32 SQFT)
ROCKWOOL SAFING ROCKWOOL MINERAL WOOL BOARD 4 in.X 24 in X 48 in.

ROCKWOOL SAFING ROCKWOOL MINERAL WOOL BOARD 4 in.X 24 in X 48 in.
ROCKWOOL COMFORTBATT R21 5-1/2 in. X 15-1/4 in X47 in. (39.82 SQFT)

ROCKWOOL COMFORTBATT R21 5-1/2 in. X 15-1/4 in X47 in. (39.82 SQFT)
ROCKWOOL COMFORTBOARD 80 1-1/4 in. X 48 in. X 96 in. (32 SQFT)

ROCKWOOL COMFORTBOARD 80 1-1/4 in. X 48 in. X 96 in. (32 SQFT)
ROCKWOOL SAFE 'N' SOUND 3 in. X 23 in. X 47 in. (60.05 SQFT)

ROCKWOOL SAFE 'N' SOUND 3 in. X 23 in. X 47 in. (60.05 SQFT)

Explore by Category

Find exactly what you need—fast. Browse our wide range of building materials, tools, and supplies, all organized by category to make your search simple and efficient.

Services Built Around 
Your Project Needs

Fast, reliable, and expert-backed — everything you need to build smarter and faster.

  • Expert help when you need it.

  • Smart pricing with AI deals.

  • Custom orders for special needs.

  • Real-time order tracking updates.

Fast Nationwide Delivery

We guarantee delivery within 2 hours for thousands of in-stock products to keep your project moving without delays.

  • Saves valuable project time

  • Reduces downtime and waiting

  • Covers a wide local delivery area

  • Flexible delivery slots to fit your schedule

Expert Customer Support

Our team brings 30+ years of construction experience to assist you with material selection, tool advice, and project questions.

  • Personalized recommendations tailored.

  • Quick response times via phone, chat, or email.

  • Knowledgeable guidance on product compatibility.

  • Support from real industry professionals.

AI-Powered Price Negotiation

Instantly negotiate prices live using our AI tool to get the best deal without haggling or delays.

  • Transparent pricing with no hidden fees

  • Saves time by automating negotiations

  • Ensures competitive market rates

  • Customizes prices based on order size and frequency

Wide Product Selection

Access 5,000+ top-brand materials and tools, all in stock and ready for immediate shipment.

  • Comprehensive range covering all project needs

  • Trusted brands ensuring high quality

  • Regularly updated inventory to meet demand

  • Easy navigation by category for fast ordering

Custom Orders & Special Requests

We source specialty and custom materials to meet unique project requirements.

  • Access to rare and niche products

  • Personalized sourcing tailored to your specifications

  • Coordination with suppliers for timely delivery

  • Dedicated support for complex orders

Reliable Order Tracking

Track your orders in real time from confirmation to delivery for full transparency.

  • Receive timely updates via SMS or email

  • Know exactly when to expect your delivery

  • Helps plan project schedules efficiently

  • Reduces uncertainty and missed deliveries

Watch & Learn

You can learn more on Rockwool products*
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Trusted by Thousands — Proven by the Numbers

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Rockwool

Premium products in stock

2-Hours

Lightning-fast local delivery

24/7

Expert support available

99%

Customer satisfaction rate

Faster, Smarter, and More Affordable Than Ever

Experience lightning-fast delivery, expert guidance, and unbeatable prices — all in one place.

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