Can I use this to seal my sunroof?

Externally, yes - that should work fine.

can i use this on a canvas boat cover?

Do you mean to patch a tear? This tape is probably much thicker than your canvas. It should stick, but if you fold your cover enough times it may come off leaving a sticky mess.

Is it suitable for polycarbonate?

This stuff is so permanently sticky - I would guess that it will work. I used it underwater to patch the pool - literally, the holes were underwater and I had to dive down to place the patches. Worked like a charm (heavy gauge plastic liner). I haven't used the tape anywhere else yet, but it seems that it will stick forever to nearly anything. So, I don't know for sure about polycarbonate, but it's worth a shot. I have worked with a lot of glues and tapes - this one is by far the best ever.

Can you peel it off easy?

No it is not easy to peel off. This not actually like a tape. It is a super sticky soft patching material that applies like a tape.

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GORILLA Waterproofing Tape, Permanent, White, 4" x 10'

Product ID: 176415303

Details

Brand
GORILLA
Color
White
Material
Low Density
Number of Items
1
Recommended Uses For Product
Indoor Outdoor

💧100% waterproof seal

☀️UV resistant backing

🛠️4" x 10' heavy-duty tape

¥5930

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🦍 Seal it once, forget it forever — the ultimate fix for leaks and cracks!

ALL CONDITION DURABILITY - Works rain or shine, hot or cold, even underwater for ultimate reliability.
TRUSTED GORILLA STRENGTH - Join 20,000+ pros who rely on Gorilla Tape’s industrial-grade performance.
EXTRA THICK ADHESIVE LAYER - Ensures a strong, flexible hold that conforms to cracks, holes, and gaps.
PERMANENT WEATHERPROOF BOND - Seals out air, water, and moisture instantly for lasting repairs.
VERSATILE SURFACE COMPATIBILITY - Adheres flawlessly to metal, wood, vinyl, rubber, glass, and more.

Gorilla Waterproof Patch & Seal Tape is a 4-inch by 10-foot heavy-duty, white waterproof tape designed for permanent, weather-resistant repairs. Featuring an extra thick adhesive and UV-resistant backing, it bonds instantly to a wide range of surfaces including metal, wood, vinyl, and rubber. Engineered to withstand extreme temperatures (-70°F to 200°F) and harsh outdoor conditions, this tape is perfect for indoor and outdoor use, even underwater. Ideal for sealing leaks, cracks, and gaps, it offers professional-grade durability trusted by thousands.

Specifications

ASIN	B08126M2R4
Adhesive Format	tape
Adhesive Location	One side
Adhesive Side Count	1
Best Sellers Rank	#675 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #15 in Duct Tape
Brand Name	GORILLA
Color	White
Compatible Material	Aluminum,wood,vinyl,acrylic,outdoors,glass,plastic,metal,rubber,steel
Customer Reviews	4.4 4.4 out of 5 stars (20,517)
Global Trade Identification Number	00052427007582
Hand Orientation	Both Hands
Included Components	10 foot roll of white waterproof patch & seal tape
Item Dimensions L x W x Thickness	1"L x 40"W
Item Resistance	Moisture, UV
Item Type Name	Waterproof Patch & Seal Tape
Item Weight	150 Grams
Manufacturer	The Gorilla Glue Company
Material Type	Low Density Polyethylene (LDPE)
Model	116538
Number of Items	1
Other Special Features of the Product	Permanent
Package Size Name	1 - Pack
Part Number	101895
Recommended Uses For Product	Indoor,Outdoor
Size Name	1 - Pack
Surface Recommendation	Drywall
UPC	052427007582
Unit Count	10.0 Feet
Upper Temperature Rating	200 Degrees Fahrenheit
Warranty Description	Warranty
Water Resistance Level	Waterproof

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