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'

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 size

¥5709

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!

ALL WEATHER WARRIOR - Performs flawlessly rain or shine, indoors or underwater.
UV MOISTURE SHIELD - Heavy-duty backing resists yellowing and weather damage over time.
LEAK FIXER EXTRAORDINAIRE - Ideal for roofs, pool liners, and emergency patch-ups that demand reliability.
SURFACE CONFORMITY MASTER - Adapts to metal, wood, vinyl, rubber, and more for versatile fixes.
PERMANENT BOND ZERO COMPROMISE - Seals out air, water, and moisture instantly for lasting repairs.

GORILLA Waterproofing Tape delivers a permanent, waterproof seal with a thick adhesive and UV-resistant backing. Measuring 4 inches wide by 10 feet long, it conforms to diverse surfaces like metal, wood, and vinyl, making it perfect for indoor, outdoor, and even underwater repairs. Engineered to withstand extreme temperatures (-70°F to 200°F) and harsh weather, this tape is your go-to solution for reliable, long-lasting fixes that professionals trust.

Specifications

ASIN	B08126M2R4
Adhesive Format	tape
Adhesive Location	One side
Adhesive Side Count	1
Best Sellers Rank	#900 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 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 (20,531)
Global Trade Identification Number	00052427007582
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 g
Manufacturer	The Gorilla Glue Company
Material Type	Low Density Polyethylene
Model	116538
Number of Items	1
Number of Packs	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 Feet
Upper Temperature Rating	200 °F
Warranty Description	Warranty
Water Resistance Level	Waterproof

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