I'm installing a new asphalt roof. Can the black flat part in the picture be placed between the deck and the asphalt tiles for a permanent install?

The flashing (boot) is only tucked in on the up-hill side, it is not completely touching the roof deck. The lower side is on top of the asphalt shingle. The best corollary to this is a plumbing vent collar and it is meant to be permanent as installed. There is a cover boot for the ring as well to keep water out.

Can these be used on old bigger 2x4 rafters (old 1 3/4" by 3 3/4" vs modern 2x4s at 1 1/2" x 3 1/2")?

The spacing between the two rods is around 1 5/8 inches. The rods may flex a little bit.

Does this require any removal of shingles on a finished roof.

There are 4 no s and 1 yes. According to the 3 M website, the shingles have to be removed to install the flashing.

Can this be used on metal standing seam roof?

If it went thru something solid under it you could.

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3M DBI-SALA Permanent Roof Anchor with Flashing and Cap 2103670

Product ID: 20295235

Details

Material
Vinyl
Grade Rating
Grade 2
Thread Size
0.25 inches -
Exterior Finish
Zinc
Manufacturer Grade
Grade 2

🔒Grade 2 Safety

🔩0.25" Thread Size

🏗️Fits 2x8 Roofs

R5721

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Secure Your Safety with Style!

VERSATILE USE - Perfect for contractors and homeowners alike, ensuring safety during construction and maintenance.
DURABLE DESIGN - Crafted from zinc-plated steel for long-lasting performance.
LIFETIME WARRANTY - Enjoy a limited lifetime warranty for added confidence in your purchase.
EFFORTLESS INSTALLATION - Everything you need is included for a quick setup.
ROBUST SAFETY ASSURANCE - Specialized fall protection for peace of mind on any job site.

The 3M DBI-SALA 2103670 U-Bolt Roof Anchor is a permanent anchorage solution designed for both residential and commercial wood frame structures. This robust anchor fits up to 2x8 roof members and includes everything needed for a straightforward installation, ensuring safety and productivity for contractors and homeowners alike.

Specifications

Material	Vinyl
Grade Rating	Grade 2
Thread Size	0.25 inches - 20 UNC
Exterior Finish	Zinc
Manufacturer Grade	Grade 2
Head Style	U-Bolt, Truss
Color	Black/Silver
Fastener Type	U-Bolt
Brand	3M
Item Diameter	0.4 Inches
Size	2x8
Metal Type	Zinc Plated Steel
Head Type	U-Bolt
Number of Pieces	1
UPC	648250161821 634553996321
Global Trade Identification Number	00648250161821
Manufacturer	3M
Part Number	2103670
Item Weight	1.95 pounds
Item model number	2103670
Is Discontinued By Manufacturer	No
Power Source	No
Item Package Quantity	1
Cutting Diameter	0.4 Inches
Batteries Included?	No
Batteries Required?	No
Warranty Description	Limited Lifetime

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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

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

5 days ago

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2 days ago

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R5721

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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