What is the XCV Panel? Benefits & Installation Guide

xcv panel

XCV Panel is a type of structural insulated panel (SIP) that is used as an energy-efficient building material. It consists of a rigid foam insulation core sandwiched between two structural boards, typically oriented strand board (OSB). The name XCV stands for Extruded Polystyrene Core and OSB Facing.

XCV panels are manufactured by gluing a foam core between the two OSB boards under heat and pressure. This creates a solid, composite panel that has high insulating values, is moisture resistant, and has good structural strength and rigidity.

Features of XCV Panel

High R-value 

XCV panels can provide thermal resistance or R-values of R-23 to R-32, depending on thickness. This improves energy efficiency.

Structural strength 

The OSB facing provides shear strength while the foam core provides rigidity. XCV panels can span long distances between structural supports.

Water resistant 

The foam core does not absorb moisture and the OSB is bonded with moisture resistant adhesives.


XCV panels come in standard sizes for easy and quick installation. Custom sizes can also be ordered.


Weighs less than lumber or concrete panels. Easier to transport and install.

Air tight – The tight joint connections prevent air leakage or drafts.

Uses of XCV Panel


Used for exterior and interior walls. Provides insulation and shear strength.


Used for roof panels due to structural strength and insulation abilities.


Insulated floor panels keep interiors warmer.

Cold storage 

The foam insulation is ideal for controlled environments like walk-in freezers.

Modular buildings 

Fast construction using prefab XCV panels for walls, roof and floor.

Benefits of Using XCV Panels

Energy savings 

High R-value provides excellent thermal performance to reduce heating and cooling costs.

Faster construction 

Prefab panels install faster than standard framing methods.

Labor savings 

Less manpower required for installation compared to stick framing.

Consistent quality 

Factory manufactured panels have reliable and consistent insulation and air sealing.

Mold resistant 

Foam core does not support mold growth.

Termite proof 

OSB facing and foam core deter termites.

Alternatives to XCV Panels

EPS Foam Panels 

Use expanded polystyrene foam core instead of extruded polystyrene. Lower R-value.

Polyurethane Panels 

Higher R-value than polystyrene but more expensive.

Cement Board Panels 

Moisture and mold resistant but less insulation. Heavier.

Straw Bale Panels 

Sustainable but lower R-value and strength. Need protective facing.

Installation Guide for XCV Panels

  • Prepare level foundation for floor panels to be laid on.
  • Use panel adhesive between all panel joints. Nail panels together with long galvanized nails.
  • Cut openings for windows, doors, plumbing, and wiring before erecting walls.
  • Lift wall panels into place and anchor to the floor panel. Connect corners and wall joints tightly.
  • Install roof panels by nailing into top plates of wall panels. Seal joints.
  • Hang doors, windows and install insulation in panel gaps.
  • Finish interior and exterior with drywall, siding, roofing membrane as desired.


Here are some frequently asked questions about XCV Panels:

What are XCV Panels made of?

XCV Panels consist of a solid foam insulation core sandwiched between two structural facings, typically oriented strand board (OSB). The foam core is extruded polystyrene.

How much do XCV Panels cost?

Pricing can range between $5 – $7 per square foot installed. Cost depends on thickness, custom sizes, order volume, and geographic location.

What is the R-value of XCV Panels?

R-values range from R-23 to R-32 depending on thickness. A 6 inch thick XCV Panel will have an R-value around R-28.

How long do XCV Panels last?

When properly installed, XCV Panels can last over 50 years. The OSB facings and foam core are rot, mold and mildew resistant.

Can you frame over XCV Panels?

Yes, wood or metal framing can be installed over XCV Panels to allow utilities, insulation and finishing materials.

Are XCV Panels code approved?

XCV Panels comply with ICC and ASTM standards and are accepted in building codes across North America.

What climate are XCV Panels suitable for?

XCV Panels can be used in any climate. Their insulation keeps interiors cooler in summer and warmer in winter.

How heavy are XCV Panels?

A typical 4×8 foot XCV Panel weighs approximately 3-4 lbs per square foot.

How soundproof are walls with XCV Panels?

The foam core absorbs noise and provides a STC rating of 35-39 when used in walls. Additional insulation can improve soundproofing.

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