Container kits · American Fork, Utah
Shipping container insulation kits in Utah
Rapid Insulation's container kits turn a corrugated steel box into a flat, insulated room. EPS ridge inserts fill every channel on the side walls, end wall and ceiling, then flat 4x8 EPS sheets go over the top. Kits for 20 ft and 40 ft containers, standard or high cube, cut and fabricated in American Fork, Utah.
What's in a kit · 20 ft & 40 ft · Profiles · Install · FAQ
See how it works
Inserts fill every ridge, then the sheets go flat
Steel container walls are corrugated, which makes them hard to cover with flat board. Our kits handle the ridges first, so the sheets go on flat.
Every insert is hot-wire cut from a saved CNC program in American Fork, so the pieces match from one ridge to the next.
What's in a kit
Two layers of EPS, cut to fit the box
- Layer 1
Ridge inserts
EPS profiles cut to the shape of the corrugations. They press into the channels on the side walls, end wall and ceiling, and the steel turns into a flat surface.
- Layer 2
Flat EPS sheets
2.5 inch, 4x8 ft EPS sheets that go over the filled walls and ceiling, edge to edge.
- Your finish
Optional
Cover the foam with the wall finish you want, or leave it for a shop or storage box.
Kit sizes
20 ft and 40 ft kits
Both lengths come in standard height (8'6") and high cube (9'6"). Every insert is 8 ft long and all of the foam is 1 lb EPS.
40 ft container kit
Our full-length kit. A 40 ft standard kit includes:
- 90 side wall ridge inserts
- 7 end wall ridge inserts
- 55 ceiling ridge inserts
- 39 flat EPS sheets, 2.5 in. x 4x8 ft
20 ft container kit
The same system, sized for the shorter box:
- Side wall and ceiling inserts for a 20 ft length
- End wall inserts for the closed end
- Flat 2.5 in. x 4x8 ft EPS sheets to cover it
- Exact part list sent with your quote
High cube walls are taller inside, so we size high cube kits to match and confirm the part list with your quote.
Insert profiles
Cut to the shape of each ridge
Every insert is a trapezoid: a narrow top, a wide base and a depth that matches the channel. Nominal sizes:
1-5/16 in. deep
2-5/8 in. top · 7-7/8 in. base · 8 ft long
1-9/16 in. deep
4 in. top · 5-3/8 in. base · 8 ft long
5/8 in. deep
3-3/8 in. top · 4-1/4 in. base · 8 ft long
Ridge sizes can differ between container makers. Send a photo of one ridge with a tape across it and we'll check the fit before we cut.
From our shop
Cut from a saved CNC program
We nest the inserts on the CNC hot-wire so a full set comes out of the block in one run. A reorder runs from the same program and matches the first kit.
Install
Five steps to a flat, insulated box
Clean and dry
Clean the inside surfaces of the container and let them dry.
Press in the inserts
Push each ridge insert into its channel, wide side in, until it sits flush.
Trim to fit
Cut inserts to length with a saw or knife at corners, doors and openings.
Lay the sheets
With every channel filled, set the 2.5 in. sheets over the walls and ceiling, edge to edge.
Fasten
Fasten everything with the method we recommend on your quote.
Get it your way
Pickup, delivery or install
American Fork shop
Your kit is bundled and ready at 7501 N 6500 W, by appointment.
To your site
We bring the kit to your container. Delivery is quoted per job.
Ask us
Want help putting it in? Ask when you request your quote.
How to order
Three steps to your order
Tell us the container length (20 ft or 40 ft), standard or high cube, and whether you want pickup, delivery or install help.
Send us the job
Call or email with sizes and quantities, a drawing, or a photo with a ruler in it. You can also drop off the part.
Get a custom quote
We look it over and send you a quote for your job.
Pick up or get it delivered
Pickup in American Fork by appointment. Delivery up and down the Wasatch Front is quoted per job.
We take cash, card (3.5% fee), check, Zelle and Venmo.
Custom cuts take a 50% deposit. Stock sheets are paid at pickup.
Planning
Sheet counts and typical R-value
Working out how much foam you need? Read our guide: How much foam to insulate a 40 ft shipping container.
Typical R-value
| Density | R per inch | 2.5 in sheet |
|---|---|---|
| 1.0 lb EPS | R-3.9 | about R-9.8 |
| 1.5 lb EPS | R-4.2 | about R-10.5 |
| 2.0 lb EPS | R-4.4 | about R-11.0 |
Typical values at 75°F from the Rapid Insulation EPS data sheet (REV004). Ask us for the full sheet.
FAQ
Container kit questions
Don't see your question? Call or email us.
What is a shipping container insulation kit?
It's a set of EPS foam pieces cut to fit the inside of a steel shipping container. Ridge inserts fill the corrugation channels on the side walls, end wall and ceiling so those surfaces turn flat, then flat 4x8 EPS sheets go over the top. Rapid Insulation cuts and fabricates every kit in American Fork, Utah.
What container sizes do you make kits for?
We cut kits for 20 ft and 40 ft containers, in standard height (8'6") and high cube (9'6"). Tell us the length and height of your container and we'll send the part list with your quote.
Why use ridge inserts instead of just foam board?
A container wall is corrugated, so flat board laid against it only touches the high points and leaves an open channel behind every ridge. The inserts fill those channels first. Then the sheets sit flat and tight against a flat surface, with no hollow spots behind them.
Will the inserts fit my container?
Our inserts are cut to the common side wall, end wall and ceiling profiles. Ridge sizes can vary between container makers, so send us a photo of one ridge with a tape measure across it, or the width and depth, and we'll check the fit before we cut.
What comes in a 40 ft standard kit?
A 40 ft standard kit has 152 ridge inserts, all 8 ft long: 90 for the side walls, 7 for the end wall and 55 for the ceiling. It also includes 39 flat EPS sheets, 2.5 inches thick and 4x8 ft.
How do I install a container insulation kit?
Clean and dry the inside of the container. Press each ridge insert into its channel, wide side in, and trim pieces to length with a saw or knife where needed. Once every channel is filled, lay the 2.5 inch sheets over the walls and ceiling edge to edge, then fasten them with the method we recommend on your quote.
Can I pick up the kit, or do you deliver?
Pick up your kit at our shop in American Fork, Utah, by appointment, or we can deliver it to your site. Delivery is quoted per job. If you'd like help with the install, ask us when you request your quote.
Can you reorder the same kit later?
Yes. Each insert profile is cut from a saved CNC program, so a second kit for another container matches the first one.
More from Rapid Insulation
Other foam we cut
Insulation →
EPS and XPS foam board, 4x8 sheets, cut to thickness, under-slab board.
RoofingRoofing →
Roof board for flat and low-slope roofs, tapered pieces, crickets and saddles.
GeofoamGeofoam →
EPS geofoam blocks, lightweight fill, void forms and concrete blockouts.
EIFSEIFS →
EPS window and door trim, bands, cornices, quoins and custom profiles for EIFS and stucco.
PackagingPackaging →
Custom CNC-cut EPS and XPS inserts, end caps and custom cardboard boxes.
Custom cuttingCustom shapes →
Signs, letters, props and one-off parts cut from your drawing.
Get a custom quote
Tell us what you need
Call: (760) 650-5737Email: contact@rapidinsulationutah.com
Pickup: 7501 N 6500 W, American Fork, UT, by appointment