Container Inserts: Side Walls

Product Overview

The corrugated ridges of shipping containers have varying sizes and dimensions for the walls and ceilings. Sidewalls include 30 inserts per box. The inserts are a part of a comprehensive approach of insulating a shipping container.

  • I-SWI  (Side Wall Inserts – 4’ (30 pcs.) 
    • (15) 8′ long insert =120 Lineal Feet of inserts


1 box contains 30 Sidewall Inserts (120 Lineal Feet of Inserts )


Side Wall Inserts fit the indented space in the container’s long side wall where the weld seams are 44″ on center. It fills the hidden air spaces to reduce where condensation can occur. The inserts are a part of a comprehensive approach to insulating a shipping container’s walls and ceiling. There are 30 side Wall Inserts per box. 

  • Boxes of 30 inserts 4′ long (covers 13 1/2’ lineal of the container wall 8’ high)
    • One side of a 20′ container would need 1 3/4 boxes of the Side Wall inserts
    • One side of a 40′ container would need 3 1/2 boxes of the Side Wall inserts
  • See Measurement Diagram

(SWI Side Wall Inserts)

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Side Wall Inserts

One box of Side Wall Inserts covers 112 Lineal feet of corrugation.

Dimensioned to fit

48in x 7 3/4in x 1 1/4 in


2.5 sq-ft

R-Value ASTM C518


Closed-Cell, injection-molded EPS 

ASTM C578 Type II

Canadian Standards

CAN/ULC S701 Type 2

Foam Density

1.00 lbs per cubic foot

Features Benefits
    • Simple to install
      • Why work so hard?
      • Adaptable Attachment
      • No Special Tools Needed
      • Adhesive Application no holes
    • Closed-cell high pressure fused EPS Insulation
    • Lives up to its name: In So Fast
      InSoFast engineered system of continuous insulation is perfectly suited for shipping container fabrication.
Side Wall Insert

  •  The sidewall of a shipping container interior applications.  If you just need to just insulate a container for storage and covering the insulation for fire safety and protection is not a concern we recommend the (SWI) Side Wall Inserts to infill the wall’s corrugated voids to prevent hidden condensation. The flat stock foam panels and inserts is a three-step process insulated first with the (SWI) Side Wall Inserts to infill the wall’s corrugated voids preventing hidden condensation. Then locally sourced (48″ x 96″) flat stock sheet insulation are installed over the inserts completing the continuous thermal layer before the traditional interior framing and services can be installed. This is the least expensive method available but increase the labor, material co-ordination and complexity in details. Then install locally sourced board stock insulation over the steel containers exposed metal surfaces.
            1. Inexpensive method when modifying older containers with dings and dents prevent cold condensation surfaces.
            2. Method when modifying older containers with dings and dents.
            3. Industrial fast track application not suitable for habitual spaces, storage only.
              • Check with local code restrictions for exposed foam insulation fire requirements.
            4. Traditional framing, wood or steel studs, would need to be installed with drywall and optional additional insulation in order to make the container into a habitable space

Sidewall Inserts:

        • (SWI Side Wall Inserts) = 30 pieces 48 inches long covering 120 lineal feet of corrugation in-fill or (15) 8′ tall sections
Estimating Sidewall Inserts

Estimating and ordering is simple measure and add together how many lineal feet of infill that your container requires to complete the job. Divide the total lineal footage by 4′ long inserts this will give your the total number of inserts you will need.  Don’t overestimate, cut the inserts can be re-used.

    • (2 Side Wall Inserts = (1) 8′ infill)
    • 1 Box of 30 pcs (15) 8′ long insert =120 Lineal Feet of inserts
Estimating Adhesive


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Green Guard Certified Adhesive:

In Canada the Glue is LePage PL Premium

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 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. If you are doing it 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-LP 46 (46 studs) = 46
  • 46 ÷ 18 = 2 1/2 tubes of the adhesive
  • I-SWI (30) = 1 tube of the adhesive


Rough estimate for  28 ounce tubes of adhesive required

Container Side Wall  End Wall Ceiling  Total Walls & Ceiling Floors Swing Doors Total Estimate
20′- Standard 2 1/2  6 1/2 13 1 1/2 3 18
20′- High Cube 2 1/2  6 1/2 14 1 1/2 3 19
40′- Standard 6 2 1/2  13 28 3 3 34
40′- High Cube 2 1/2  13 29 3 3 34

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.

Technical Data

Shipping, Purchasing & Returns

Please read all the current Shipping, Purchasing & Returns *

Freight Dimensions Weight
Product Code

Number of Parts

Per Box Dimension

Cubic Feet Per Box

 Weight Per Box




 CSW -Side Wall Inserts

30 pcs 4′ = 120 lnft





12 Lbs

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