Innovative Roofing Insulation Solutions for Every Project

Discover cutting-edge insulated roofing solutions designed for maximum performance, from green roofs to disaster-resilient systems. Build smarter with Alleguard.

Build Resilient and Energy-Efficient Roofs

Alleguard’s EPS solutions are designed to meet the demands of modern roofing, offering unparalleled insulation and moisture management. By choosing EPS, you’re investing in sustainable, energy-efficient roofs that are built to last.

Our Roof Insulation Products

Flute Fill Learn more

Flute Fill

Designed to enhance roofing assemblies with precision, performance, and cost-efficiency. Customizable in flat cut or tapered cut, Flute Fill EPS insulation offers a lightweight design that simplifies installation while reducing structural load. Specifically engineered for standing seam metal roof systems, Flute Fill combines high compressive strength with superior moisture resistance to deliver long-lasting durability. Its excellent R-Value retention ensures optimal thermal insulation over time, contributing to energy-efficient and sustainable construction.

Product Features:

  • Customizable options for flat or tapered cuts to meet specific roofing needs.
  • High compressive strength for added stability in metal roof systems.
  • Superior moisture resistance to prevent mold and structural degradation.
  • Lightweight design for easy handling and reduced structural load.
  • Excellent R-Value retention for long-term thermal performance.
  • Cost-effective alternative to traditional infill materials.

Learn more about Flute Fill →

Holey Board Learn more

Holey Board

Alleguard’s Holey Board (HB) is a custom-cut foam board crafted from closed-cell Expanded Polystyrene (EPS), offering cost-effective performance for lightweight insulating concrete (LWIC) roof systems. Featuring factory-cut holes, Holey Board integrates seamlessly with cellular, perlite, or vermiculite concrete to create efficient and durable roof assemblies. Fully encapsulated within the lightweight concrete, Holey Board often serves as the primary insulation, delivering superior thermal performance and energy efficiency. Ideal for both new construction and retrofit projects.

Product Features:

  • Precision factory-cut holes.
  • Acts as the main thermal barrier within LWIC systems, offering excellent R-Value retention.
  • Designed for use with cellular, perlite, and vermiculite concrete in lightweight roof assemblies.
  • Suitable for both new construction and retrofit applications.
  • Does not promote growth of mold and mildew.

Learn more about Holey Board →

Fanfold Roof Cover Board Learn more

Fanfold Roof Cover Board

Alleguard’s Fanfold Sheathing is a lightweight, energy-efficient roof cover board designed for superior insulation and ease of installation. Featuring a high-quality EPS core and a durable laminate facer, its accordion-folded design simplifies transportation, handling, and application. The hinge-fold design ensures the product lays flat. Boards can be manufactured in variety of densities and are available in thicknesses of 3/8″ (10mm), 1/2″ (13mm), 3/4″ (19mm) and 1″ (25mm).

Product Features:

  • Combines an EPS core with a laminate facer for robust performance without adding excess weight.
  • Micro perforated films provide high vapor permeance and allows moisture to dry. 
  • Accordion-fold design reduces labor time and simplifies handling.
  • Enhances the thermal performance of existing insulation, reducing energy costs
  • Available with clear poly on both sides or reflective on one side for additional thermal efficiency.

Learn more about Fanfold Sheathing →

Tapered Roofing Insulation Learn more

Tapered Roofing Insulation

A versatile and cost-effective solution for enhancing the performance of flat and low-slope roofs. Made from closed-cell Expanded Polystyrene (EPS), this insulation system is custom-manufactured to meet the unique slope and thickness requirements of each project, offering virtually limitless design possibilities. Ideal for new construction and retrofit applications, it delivers exceptional thermal resistance and long-term durability. With low in-service water absorption, Alleguard’s Tapered Roof Insulation maintains its specified R-Values over time, ensuring reliable energy efficiency. Lightweight and easy to handle, it simplifies installation while accommodating optimal sloping and drain placement for efficient water drainage.

Available in slopes ranging from 1/2″ (13mm) to 48″ (1219mm).

    Applications:

    • Compatible with single-ply and built-up roofing systems.
    • Flat roofs and low-slope roofs.
    • Hybrid tapered roof insulation solutions.
    • Commercial, residential, institutional, and industrial projects.

    Learn more about Tapered Roofing Insulation →

    Amdeck Insulated Concrete Roofing System Learn more

    Amdeck Insulated Concrete Roofing System

    The Amdeck Concrete Roofing System is a durable, energy-efficient solution for flat and sloped roofs, combining structural integrity with superior thermal insulation. Available in Amdeck Eco and Amdeck Pro, the system is designed to meet diverse application needs, from residential to commercial projects. Made with lightweight Expanded Polystyrene (EPS), Amdeck provides a modular, stay-in-place formwork for one-way reinforced concrete slabs.

    Applications:

    • Amdeck Eco is eonomical and lightweight, with integrated slots for dimensional lumber, ideal for small to mid-sized projects.
    • Amdeck Pro incorporates lightweight steel joists for enhanced strength and extended spans, suitable for larger and more demanding applications.
    • Flat and sloped roofs in residential, commercial, and industrial buildings.
    • Projects in high wind, hurricane-prone, and flood-risk areas.
    • Green roofs or other environmentally sustainable roofing systems.

    Learn more about Amdeck →

    Geofoam Green Roofs Learn more

    Geofoam Green Roofs

    Geofoam provides a lightweight yet strong insulation layer that reduces structural load while maintaining its R-Value over time. Its use in green roofs promotes stormwater management, reduces energy consumption, and extends roof longevity, all while contributing to improved air quality and temperature regulation. Pre-cut options allow for limitless customization, enabling efficient and labor-saving installation for unique landscape designs.

    Applications:

    • Sustainable building designs requiring lightweight, high-performance insulation.
    • Residential, commercial, and industrial green roofs.
    • Urban heat-island mitigation projects.

    Learn more about Geofoam →

    Why EPS?

    With high R-Value retention, superior bonding capabilities, and availability in various compressive strengths, EPS provides consistent thermal performance while being fully recyclable and free from harmful compounds or dyes. Lightweight and easy to customize, EPS saves time and money, making it an ideal choice for energy-efficient and sustainable roof assemblies.

    The Alleguard Advantage

    With a combined 60-year history and proven track record of supporting our customers’ visions, Alleguard is strategically built from the ground up to expand and shape your business. Whether you’re in construction, protective packaging, cold-chain or other industries, we are relentless in going the extra mile to help your business succeed.

    Shaping A More Sustainable World

    Sustainability is one of our top priorities, both for our products themselves and for what our products make possible. Manufactured without ozone-damaging compounds, recyclable and endlessly reusable, EPS has a smaller carbon footprint and results in less pollution than the manufacturing of alternative materials. And EPS helps create a more sustainable world by making buildings more energy efficient, reducing greenhouse gas emissions, preventing product damage and waste, and reducing shipping fuel usage, just to name a few. We’re constantly working to find new ways to be good stewards of our customers’ visions and of our environment.

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    Interested in Learning More?

    Whether you need a custom solution for a unique project or have a question, we’re here to help.