Shipping Container: CX44 Panels to Interior Sidewalls

How to Install CX44 Panels:

Before you Glue;

Before You Glue

The InSoFast CX Container Panel is designed for the side walls of most shipping containers. The CX panels adhere to the industry standard of 11" on center, repeating pattern of the corrugated sidewall. The panel size is 44" wide x 24" high fits into this container standard module.  This spacing conflicts with the 4' x 8' construction standard!  The panel's stud spacing is 22"on center.  THIS EFFECTS the finish materials installation methods. (E.G. a sheet of drywall 48" x 96",  22" on center does not divide evenly into 48 or 96.) The fastening and adhesive patterns will change and finish material waste should be considered. 

Dry fit and adjust your panels to fit. Use a razor blade knife to fit around cargo hooks, dents, and weld seams. Leave a 1/4" gap to allow for spray foam sealant.

The CX panels are installed horizontally with the studs running vertically. Lay out the first row of CX panels to determine the fit to the container. Variations in the corrugations may require the panels to be trimmed or spaced out. If the panels need to be adjusted, it may be better to stack bond the panels instead of installing the panels in a running bond pattern. Place a 3/8" bead of adhesive on the backside of the CX44 panel.

Products Required;
Insulated Panel Systems CX 44

CX44 Insulated Shipping Container Panel with Studs

CX44 Panel Details

dwg dxf pdf
CX44 Zip File


24in × 44in × 2in-3 1/2in

Horizontal Chase

 48in × 1in × ¾in

Vertical Chase

 24in × ¾in × ¾in


7.33 sq-ft

R-Value ASTM C518


ASTM C578 Type II

Closed-Cell, injection-molded EPS 

Canadian Standards  CAN/ULC S701 Type 2

ASTM C303 Foam Density

1.35 lbs per cubic foot

ASTM E96 Water Vapor Permeability

 (Class III Vapor Retarder) 3.5perm/in

Maximum Service Temperature (long term)

167°F = 75 Celsius (°C)

Co-Polymer Polyproylene Insulated Stud


Interlocking Edges

Service Raceways

Engineered for Shipping Containers

Exterior Application

Interiors Application

Installing a Wood Buck into a Container;

First Things First

Safety Precaution: Cut out all openings in the container and complete any welding, cutting or grinding operations prior to installing InSoFast panels. Do not expose the foam insulation or plastic studs of InSoFast panels to the flames, heat or sparks generated by welding, grinding or cutting on the steel container after panels have been installed. 

See this page for in depth instruction for installing wood bucks. MORE

Determine your window layout first. We suggest that you adjust your openings to the right or left up and down to simplify other steps  later on. If you invested in a sample kit use the side wall insert to help you mark your layout lines.To fasten the interior half of the buck we used special fasteners fro ITW with a drill bit and metal wings that over drill the wood then break-off to allow the screw to anchor itself to the steel container wall.

The window bucks are complete and ready to finish. Next step is to insulate the interior walls with the Sidewall Inserts and the UX2.0 Flat panels.

Adhesive Application;

Add a 3/8" bead of adhesive to the cut end of the panels

Since there is no stud at the cut ends of the panels, an additional bead of PL Premium 3x is applied at the start and end of each wall.  If you find an area that has not bonded to the container, simply drill a hole through the foam and inject additional adhesive.

Air sealing;

Air seal the bottom of the first row of panels. 

It is important to seal the bottom of the first row of panels. Apply a continuous bead of spray foam or adhesive along the bottom of the side wall of the container.

Air sealing the rows horizontally.

Air Seal the panels horizontal rows every 2' with spray foam adhesive.

At the top of the second row, run a bead of spray foam on the back side of the panel or directly on the container wall. We recommend sealing the horizontal rows every 2’ to prevent air movement behind the panels. 

Install CX Panels in a running bond pattern, (stagger joints like brick work.) To start the second row, cut a panel in the center with a long snap off blade utility knife. This will start the off set running bond or staggered pattern.

Panels you would need for a complete insulated CX44 Container;
Complete Container Insulation Panels; 20' Standard 20' High Cube 40' Standard 40' High Cube
  Sidewall Sidewall Sidewall Sidewall
CX44 Interior Sidewall (2) Sidewalls (20' ) CX44-Bundle (20' HC) CX44-Bundle (40') CX44-Bundle (40' HC) CX44-Bundle
Box Total: 9 10 18 20
Flat Panel/Insert Endwall Endwall Endwall Endwall Endwall
2.0 Flat Panel (UX) 2 2 2 2
Inserts: Endwall 1 1 1 1
Box Total: 3 3 3 3
Ceiling 2.0 Flat Panel-Bundle Ceiling Ceiling Ceiling Ceiling
2.0 Flat Panel (UX) 4 4 8 8
Inserts: Ceilings 1 1 2 2
Box Total: 5 5 10 10
Door 2.5 Flat Panel-Bundle (2) Doors Door Door Door Door
2.5 Flat Panel (EXe) 2 2 2 2
Floor 2.0 Flat Panel-Bundle Floor Floor Floor Floor
2.0 Flat Panel (UX) 4 4 8 9

Total Box Count 23 24 41 44

The Recommended Adhesive:

1. Why Use Loctite PL Premium 3x;

Loctite PL Premium


New Look Buy Shipping Container Insulation Panels in Monroe, NC

Green Guard Certified Adhesive:

One of the many reasons we recommend Loctite PL Premium is it has the GREENGUARD Certification.  It is important to us that you use an adhesive that has low chemical emissions, you are building in an airtight shipping container, improving the quality of the air you breath is kind of important.

InSoFast panels were designed with simplicity in mind and we would argue that gluing them is not only the easiest method of installation but often the most effective. Third-party testing has shown the adhesive bond strength of our studs to have 108psi of holding power. This means each adhered panel is capable of holding over 5,000lbs!

In Canada the Glue is LePage PL Premium

Testing was conducted using Loctite PL Premium’s 3X Stronger Construction Adhesive, (in Canada it is marketed under the LePage PL Premium brand,) on clean concrete surfaces. It is the only adhesive we have tested. Other formulas and brands may not work as expected.

2. Estimating Adhesive Quantity;

Estimating Adhesive Quantity

Estimating the amount of adhesive YOU will use has variables beyond our control like condition of your walls and how accurate are you with a glue gun? The example below is for one side wall of a 20' standard height shipping container you will need approximately 3 tubes of the adhesive. That is in a perfect world. PL Premium 3x adhesive is applied in a ⅜" bead on the backside of the studs onto the ribbed surfaces.  We realize that a 3/8" bead of glue is very subjective. It is important that there is enough adhesive to squish the dovetails on the back side of the stud when pressed to the container wall. Adhesive follows the "Goldie Locks rule, too much, too little, and just right. If you are doing just right you can expect that 1 large 28-fl oz tube will cover 18 of our 24" long studs or enough glue at a 3/8" bead to cover 36 foot long bead of glue. 

Additionally you will have to estimate for glue around openings like windows and doors.

1 large 28-fl oz / 828 mL tube = 18 (24" studs or inserts)

  • CX 44 (22 panels with 2 studs each plus 8 end wall edges) = 52
  • 52 ÷ 18 = 3 tubes of the adhesive

 To verify that enough adhesive is used, press the panel into place. Pull the panel back and check to see if the adhesive has spread out beyond the full width of the stud. It is normal for the panel to "float out" from the side of the container when it is accommodating irregularities in the container walls. Additional adhesive may be necessary in some areas.

3. Adhesive Quantity Chart;
LOCTITE® PL PREMIUM® POLYURETHANE CONSTRUCTION ADHESIVE Rough estimate for  28 ounce tubes of adhesive required
Container CX 44 Side Walls End Wall and Inserts Ceiling and Inserts Swing Doors Floors Total without doors and floors Total Estimate with doors and floors
20' Standard 3 Per side total 6 2 1/2  6 1/2 3 7 13 23
20' High Cube 3 Per side total 7 2 1/2  6 1/2 3 7 14 24
40' Standard 6 Per side total  12 2 1/2  13 3 14 28 45
40' High Cube 6 Per side total  13 2 1/2  13 3 14 29 46
4. Important Notice: Container Surface Preparation, Temperature Application;

Important Notice: Container Surface Temperature Applications

When bonding EPS and XPS foam insulation, use above 40°F (4°C) and avoid cure and surface temperatures above 90°F (32°C). Surfaces must be clean, dry and free of frost, grease, dust and other contaminants. Pre-fit all materials and protect finished surfaces. If using cartridge format, cut nozzle at a 45° angle to desired bead size and puncture inner seal. Be very careful not to allow Loctite® PL® Premium to cure on a finished surface.

Cold Weather Tips:  

Interior Installation

Heating the interior of the container will not be sufficient for the adhesive to cure because the insulation panels will not allow heat to transfer to the container surface.  It is recommended to either move the container to a heated area or tent and heat the exterior until the adhesive has cured.

Exterior Installation

The interior of the container can be heated until the adhesive has cured.

Interior and Exterior Installation

Install the exterior panels first while heating the interior.  Allow adhesive to cure before installing interior insulation.

Overview / FeaturesTechnical Data / Directions

5. Safety Precautions and Cleanup;

Wear gloves. Cured adhesive on bare skin will not come off immediately with washing and will cause skin to darken. Cured adhesive and discoloration will come off in about 3 days.

Clean tools and uncured adhesive residue immediately with mineral spirits in a well-ventilated area to the outdoors. Remove cured adhesive by carefully scraping with a sharp-edged tool.

InSoFast Plus Method

Need a higher R-value? No Problem! Start with a base of InSoFast continuous insulation panels they are feature-rich and easy to install. Then add rigid foam insulation over top of InSoFast panels.