Watch the System Overview (5:15)
BEFOREAFTERRoof — Side — slide to compare
BEFOREAFTERRoof — Front — slide to compare
The Crazy Seal Roofing System
Residential Flat Roofing
Fix your flat roof once. Yourself.
Crazy Seal is a seamless, fiber-infused silicone membrane for the flat and low-slope roofs regular roofers won't touch — sunrooms, porches, additions, mobile homes. One continuous layer over the whole roof, no tear-off, no seams for standing water to find.
Kits are sized by square footage and ship free to your door with every product, tool, and instruction you need.
Sized & priced to your exact roof
Kits scale from a single tube of caulk to a complete system for thousands of square feet. Typical sunroom and porch roofs run $750-$2,200 all-in, installed by you over a weekend.
In-stock & ready to ship from our USA facility
Split into 4 installments on $100–$1,000 orders
Free shipping on orders over $500
50 year warranty when registered
Questions about sizing or fit? Call (800) 963-0131 — we'll make sure you get exactly what your roof needs.
The Details That Matter
Why the System Works
40 mils of cured membrane. The first layer cures to 20 mils; the second doubles it to 40 — even thicker where Crazy Caulk and Crazy Patch seal seams and penetrations.
100 sq ft per gallon. Kits are calculated by square footage, so the kit sized to your roof has exactly what it needs.
Built for imperfect installers. We recommend the double layer in most instances — the second coat guarantees proper coverage everywhere.
You never install alone. Step-by-step video suite, installation PDFs, and in-house project specialists standing by.
50-year no-hassle warranty. Finish the install, fill out a simple form, and your roof is covered.
21½ Reasons Why — Full Overview (10:24)
Ships Direct To Your Door
Pick a Pre-Built Roof Kit
Going over an existing roof? Double Layer. Bare wood decking? Direct to Deck. Not sure? The Kit Builder sorts it out in three questions.
Seamless Roofing Kit (Double Layer)
Our flagship double-layer system with Crazy Cloth reinforcement.
or 4 payments with Affirm
Direct-to-Deck Kit
Seal directly over plywood or OSB decking — no underlayment needed.
or 4 payments with Affirm
Crazy Good Repair Kit
Patch leaks, seal penetrations, or add a fixture to any Crazy Seal roof.
or 4 payments with Affirm
Real Roofs. Real Results.
Real Homes, Documented Start to Finish
These aren't stock photos — they're documented customer installations, in their own words and pictures.
ResidentialProject #5344
DIY Residential Roof That Sealed the Deal
“The product was easy to apply, and the customer service was fantastic.”
ResidentialProject #5210
Slippery Coats and Solid Results
“The first coating was challenging, the second coating was easier and slippery. By the time we got to the end and finishing up, we were slipping and sliding. It was an experience to hang on to.”
ResidentialProject #5113
Commercial Roof Revived with a Seamless Overlay
“Very easy to install.”
Straight From the Roof
Real reviews from customers who installed it themselves.
“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.”
David Vincent from Key Largo, FL
“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.”
Philip Posey from Tuscumbia, AL
“After viewing the DIY videos 4 times, I followed the instructions to the letter. The product went on easily.”
Douglas Evans from Overton, NV
“Great product, went on like advertised and ended up with a great looking roof that will last a long time.”
Dennis Van Dusseldorp
Do Your Homework
Why Crazy Seal?
This isn't box-store roof coating. Watch what makes the system different — and why it costs more.
Why is Crazy Seal More Expensive?
Let's Get Crazy — Watch Our Crazy Tests (5:24)
How It Goes Down
No torches, no tear-off, no special tools. Three steps, guided by step-by-step videos.
1. Clean
Wash the roof with Crazy Clean so the membrane bonds to the roof — not the dirt.
2. Seal
Caulk and patch every seam, screw, and penetration with Crazy Caulk and Crazy Patch.
3. Coat
Roll on the seamless Crazy Seal membrane and never worry about that roof again.
Get Specific
Guides for Specific Residential Applications
Every roof has its own failure points. Pick your exact application for a guide written for it.
Barns
Stop fastener leaks and rust on metal barn roofs — no tear-off.
Read the GuideBoat Houses
A waterproof membrane for roofs in full-time marine conditions.
Read the GuideOutdoor Rooms
Seamless protection for patio covers, lanais, and pergola roofs.
Read the GuidePorch Roofs
End the wall-flashing leak on low-slope porch roofs.
Read the GuideSheds
A one-kit weekend fix for workshop and storage shed roofs.
Read the GuideSunrooms
Stop aluminum pan-roof seam leaks over your living space.
Read the GuideTiny Homes
Light, flexible, permanent roofing for tiny houses on or off wheels.
Read the GuideFree Kit Consultation
Talk to a Specialist About Your Roof
Tell us about your roof and we'll size the right 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