If I want to use it to wrap heat/air duct pipes up in the attic, should the aluminum side be on the inside or outside?

Should be on outside. The shiny surface has two functions: If heating season, the shiny surface has less heat radiation into the attic than any other surface color. When cooling, that shiny surface reflects -reduces the absorption - of heat radiation.

Want to insulate the kitchen fan exhaust pipe; is this an appropriate product for that use? If not, what should I use?

This would work using aluminum foil tape for the seams.

This is a roll of insulation 12 inches wide -- 15 foot long and 2 inches thick, there may be sheets of material in the 2 inches but I never counted them -- it is just 2 inches total thickness

Can this be used to wrap an aluminum dryer vent tube to prevent condensation on the outside of the tube during the winter?

I used it to insult my bathroom fan duct running through the attic. I had a problem with condensation dripping down into the bathroom. This fixed the problem.

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Thermwell Products 12"X15' Fbg Insulation Sp55 Pipe Insulation

Product ID: 17832372

Details

Brand
Frost King
Global Trade Identification Number
Material
Fiberglass
Product Dimensions
18.5"L x 12"W
Recommended Uses For Product
Insulation of

🔥4.3 R-Value thermal efficiency

🧰Fiberglass + foil for vibration reduction

🛠️15 feet length for extensive coverage

€ 83.10

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Wrap your pipes in efficiency and silence—because your space deserves the best!

EXTENDED COVERAGE - Generous 15-foot length wraps more pipes in one go—less hassle, more efficiency.
SECURE INSTALLATION - Easily wired or taped in place, ensuring a snug fit that lasts through seasons.
VERSATILE APPLICATION - Perfect for heating/cooling pipes, ducts, auto hoods, and trunks—adaptable to your needs.
MAXIMIZE ENERGY SAVINGS - 4.3 R-Value insulation locks in heat and cool air, cutting energy waste.
VIBRATION DAMPENING TECH - Fiberglass combined with foil reduces noise and vibration for a quieter environment.

Thermwell Products 12"x15' Fiberglass Pipe Insulation offers a robust 4.3 R-Value for superior thermal performance, combined with vibration reduction thanks to its fiberglass and foil construction. Designed for versatile use on heating and cooling pipes, ducts, auto hoods, and trunks, it provides 15 feet of coverage and can be securely installed with wire or tape, making it a reliable choice for energy-conscious professionals.

Specifications

ASIN	B000LNNHBU
Best Sellers Rank	#59,489 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #42 in Pipe Insulation
Brand Name	Frost King
Coverage	2160 square inches
Customer Reviews	4.2 4.2 out of 5 stars (322)
Global Trade Identification Number	00077578022956
Included Components	Thermwell foil wrap
Item Dimensions L x W	18.5"L x 12"W
Item Type Name	Frost King SP55 Fiberglass Pipe Insulation, 12" x 15'
Item Weight	2 pounds
Manufacturer	THERMWELL PRODUCTS
Manufacturer Contact Information	1-800-526-5265
Manufacturer Part Number	SP55/6
Material Type	Fiberglass
Model Number	SP55/6
Recommended Uses For Product	Insulation of heating and cooling pipes, ducts, auto hoods, and trunks
UPC	077578022956
Unit Count	1 Count

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