Box Truck Roofs
One truck, one day, zero wet freight.
- 50 Year Warranty
- Made in America
- Ships to your door
Click to Watch the System Overview (5:15)
50 Years
Warranty coverage
Box truck roofs live a hard life at 70 mph.
The problem
A box truck roof is thin aluminum or translucent FRP that flexes every mile, riveted and seamed exactly where water wants in. You usually find a leak from a customer — wet freight, a damage claim, and a truck out of rotation.
The Crazy Seal fix
Crazy Seal turns that roof into one seamless membrane that moves with the truck body instead of cracking away from it. It bonds to aluminum, FRP, and steel, seals every rivet line and seam, and one crew can do a truck in a day — back on the route tomorrow.
Crazy Seal is perfect for:
- Aluminum and translucent FRP roofs with rivet-line leaks
- Delivery fleets tired of cargo damage claims
- One-day installs that keep trucks in rotation
- Straight trucks, cube vans, and moving trucks
What is Crazy Seal?
A fluid-applied, seamless roofing system that permanently seals flat and low-slope roofs — the only membrane on the market strengthened with polyethylene fibers, like rebar in concrete.
- 3-part system: problem areas sealed first, then one seamless membrane
- Simple enough for just about anyone to install
- Backed by our 50 year warranty
- A support team that answers the phone
50 Year Warranty
Do It Yourself
Made in America
Guarantee
Unmatched Quality
Thousands of Real Projects Completed With Kits Like These
Not stock photos — documented customer installs, in their own words and pictures.
Why Crazy Seal?
Forged from thousands of flat roof installs. See why fiber-infused silicone succeeds where cheap coatings fail.
21½ Reasons Why — Full Overview (10:24)
Why is Crazy Seal More Expensive?
See the Seamless Membrane in Action
Drag the bar to see every penetration sealed and every inch covered by one custom-fit membrane.
BEFOREAFTER
BEFOREAFTER
BEFOREAFTER
BEFOREAFTERStraight From the Roof
David Vincent from Key Largo, FL
“THANK YOU for a great and reassuring experience! I have already referred this system to 3 family and friends. I'm looking forward to a very long, assured feeling of protection from water intrusion.”
Philip Posey from Tuscumbia, AL
“We could not be more pleased with the Crazy Seal product. We are expecting to have many years of enjoyment from our sunroom now that we do not have to worry about leaks.”
Douglas Evans from Overton, NV
“After viewing the DIY videos 4 times, I followed the instructions to the letter. The product went on easily.”
Dennis Van Dusseldorp
“Great product, went on like advertised and ended up with a great looking roof that will last a long time.”
More Transportation Applications
All Transportation Roofs
The complete Transportation roof guide — cost, install, and kits.
Visit the HubShipping Containers
Seal dented, rusting container roofs — storage, office, or home.
Tractor Trailers
Reseal 53-foot trailer roofs and retire the freight claims.
Other applications
Talk to a Specialist About Your Box Truck Roof
Tell us about your project and we'll build the perfect kit with you — no pressure, no obligation.
- Backed by our 50 year warranty — do it once, do it right
- Kits ship straight to your door. Free shipping over $500
- Prefer to talk it through? Call us M-F 9AM-6PM EST
Get a kit built for your roof — takes about a minute.
(800) 963-0131