What is the width and length of this product?

Its 6" wide - don't remember the length but google DuPont Flexwrap and you will find it. The is a great product and is the ONLY way to prevent moisture infiltration at the bottom sill of windows.

Will this still work if I add 1" of ridgid foam on top of 1/2" sheathing?

The trick will be to get it to stick to the foam. You could wrap to the sheathing first. Then add the foam and add another layer of the flex wrap. You might want to set the foam back 1" from the window and then bend the wrap to contact the first layer of wrap and then fold it over the foam. You can overlap the wrap to get it wide enough, just remember to watch the water flow and place the lower wrap under the outer layer so the water will not try to run inside. Hope this helps

How well does this work for sound dampening? Any ideas anyone?

Will not work for sound dreading, sound deading mats are a total different material

can i use this under and over the nailing flange on a new construction window?

Yes, I guess you could (the Flex wrap is for creating window seals) but Dupont Flash Tape would be better.

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Tyvek FlexWrap NF Tape 152mm x 23m

Product ID: 59832090

Details

Brand
DuPont
Colour
White
Material
Butyl
Number of items
1
Recommended uses for product
Wall

💧Water-resistant for durable weather protection

📏152mm width for broad coverage

🛠️Self-adhered, no mechanical fasteners needed

NZ$698

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Seal the deal with Tyvek FlexWrap – where strength meets seamless style!

TRUSTED DURABILITY - Butyl material ensures long-lasting sealing and flashing performance
WEATHERPROOF SHIELD - Withstands exposure to elements for months without losing adhesion or integrity
SEAMLESS FLEXIBILITY - Extendable design adapts perfectly to corners and irregular surfaces
EFFORTLESS INSTALLATION - Self-adhering formula eliminates the need for nails or screws in flexed areas
UNIVERSAL COMPATIBILITY - Works flawlessly on diverse substrates like foam board, fiberboard, and masonry

DuPont Tyvek FlexWrap NF Tape is a premium, 152mm wide self-adhered flashing tape designed for superior waterproofing and sealing across a wide range of building materials. Its extendable, flexible butyl composition allows for easy installation without mechanical fasteners in corners, providing durable weather resistance and trusted performance on construction projects.

Specifications

ASIN	B004SFSA78
Adhesive Format	Wide Roll
Adhesive Location	Full Surface
Adhesive Side Count	1
Brand	DuPont
Colour	White
Compatible Material	Aluminium, Cardboard, Ceramic, Glass, Leather, Marble, Metal, Paper, Plastic, Polycarbonate (PC), Polyvinyl Chloride, Rubber
Customer Reviews	4.7 4.7 out of 5 stars (187)
Global Trade Identification Number	00083014102366
Included Components	Hardware Sealer
Item Resistance	water_resistant
Item Thickness	64 Millimetres
Item Type Name	DuPont Tyvek Flex Wrap NF - Roll
Manufacturer	Dupont Construction
Manufacturer Part Number	D14062882
Material	Butyl
Model Number	D14062882
Number of Items	1
Number of Packs	1
Other Special Features of the Product	Self-Adhering
Recommended Uses For Product	Wall
Size Name	6" x 75'
Surface Recommendation	Wall, Concrete, Drywall
UPC	083014102366
Unit Count	1.0 count
Water Resistance Level	Water Resistant

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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NZ$698

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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