will it stick to asphalt roofing shingles

Probably not. I would think it would just pull the asphalt pebbles off the shingles.

Can this be used on backerboard for waterproofing a shower niche before thin set and tile is applied?

That doesn't sound like a good application. I recently built a shower and used Redgard. It's super easy to work with and does a great job. It was so easy to use that I applied far more coats than required, just to be safe. It goes on liquid so it fills all space. The blueskin is more of a traditional product. It might work, but I tend toward the newer products. Check out the online videos of waterproofing. All the old guys are using membranes and some even hot-mopping. But, all the young guys, in their 30's and 40's, are using "product" - high-tech engineered products that save time. RedGard is one example of that. I used the Blueskin outside, and it worked, but there was a simpler flashing solution. Inside, I'd never use it. I'd use Redgard.

Product description says 0.9mm, which is 36 mils.

Can i use it to seal my window from the inside (cold draft coming in)

Yes, but you it is better to seal from the outside.

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Henry Barrier BLUESKIN WTHR 4INX50FT BH200WB4559

Product ID: 2382269

Details

Brand
Henry
Color
Blue
Material
Aluminum Steel
Number of Items
1
Recommended Uses For Product
[Indoor

🌀50 feet roll for extended use

📏4-inch width for broad coverage

🛡️Waterproof & weather resistant

¥33512

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Description

🛠️ Shield your space with Henry’s Blueskin – where weather meets its match!

PRO GRADE DURABILITY - Crafted from aluminum and steel for unmatched resilience
TRUSTED BRAND QUALITY - Henry’s proven reliability with 4.5-star rating from professionals
VERSATILE APPLICATION - Perfect for both indoor and outdoor use on concrete and metal surfaces
EXTENDED COVERAGE ROLL - 50 feet length ensures you’re ready for any project size
SEAMLESS WEATHER DEFENSE - Self-adhering barrier that locks out moisture and drafts effortlessly

Henry Barrier BLUESKIN WTHR 4INX50FT BH200WB4559 is a self-adhering, waterproof weather barrier roll measuring 4 inches wide and 50 feet long. Made from durable aluminum and steel, it offers superior protection against moisture and weather elements for both indoor and outdoor applications, especially on concrete and metal surfaces. Highly rated by users, it’s a trusted solution for professional-grade weatherproofing.

Specifications

ASIN	B00373PKGG
Adhesive Format	roll
Adhesive Location	back
Adhesive Side Count	1
Best Sellers Rank	#167,882 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #148 in Weatherproofing Garage Door Seals
Brand Name	Henry
Color	Blue
Compatible Material	Alloy Steel, Aluminum
Customer Reviews	4.5 4.5 out of 5 stars (228)
Included Components	Henry BARRIER BLUESKIN WTHR 4INX50FT BH200WB4559
Item Dimensions L x W x Thickness	4"L x 4"W
Item Resistance	weather resistant
Item Weight	5.6 ounces
Manufacturer	Henry
Material Type	Aluminum,Steel
Model	BH200WB4559
Number of Items	1
Number of Packs	1
Other Special Features of the Product	Self-Adhering
Part Number	BH200WB4559
Recommended Uses For Product	[Indoor, Outdoor]
Size Name	Pack of 1
Surface Recommendation	Concrete
UPC	694266999477 789164388611
Unit Count	50 Feet
Water Resistance Level	Waterproof

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¥33512

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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