Quickflash Joist Flashing - Box of 30

$97.50

Cantilevered Quickflash Joist Flashings are one-piece weatherproof polypropylene saddle flashings for decks, porches, entrance roofs, and more!

Available for both 2x and 4x Dimensional Lumber - Cut to fit x4", x6", x8", x10" or x12"

Actual interior width is slightly more than 1.5" for X2 or 3.5" for X4, to fit modern dimensional lumber.

Quickflash Joist Flashings have many benefits:

  • Reduce liability
  • Shed water away from intersection
  • Help to prevent air leakage
  • Economical — save time and labor
  • Non-corrosive — non-conductive
  • Only flashing that is specifically designed for wall penetrations
  • Self sealing around fasteners
  • Easy to integrate with building envelope and works with all cladding systems
  • PLUS A 10 YEAR LIMITED WARRANTY!!!
  •  
Width: 2" JF2X
  • ARBOR DAY
  • Best Small Business Award
  • Customer Reviews
Vendors: Quickflash SKU: JF2X
  • Easy Returns

    Easy Returns

    Return within 30 days of purchase date

  • Technical Support

    Technical Support

    Available 9am - 5pm EST Mon-Fri

  • Customer Support

    Customer Support

    Available 9am - 5pm EST, Mon-Fri

  • Fast Shipping

    Fast Shipping

    Ships within 48 hours if in stock

Cantilevered Quickflash Joist Flashings are one-piece weatherproof polypropylene saddle flashings for decks, porches, entrance roofs, and more!

Available for both 2x and 4x Dimensional Lumber - Cut to fit x4", x6", x8", x10" or x12"

Actual interior width is slightly more than 1.5" for X2 or 3.5" for X4, to fit modern dimensional lumber.

Quickflash Joist Flashings have many benefits:

  • Reduce liability
  • Shed water away from intersection
  • Help to prevent air leakage
  • Economical — save time and labor
  • Non-corrosive — non-conductive
  • Only flashing that is specifically designed for wall penetrations
  • Self sealing around fasteners
  • Easy to integrate with building envelope and works with all cladding systems
  • PLUS A 10 YEAR LIMITED WARRANTY!!!
  •  

Quickflash Joist Flashing

The Cantilevered Quickflash Joist Flashing JF X2 fits 2" X 6" up to 2 X 12" dimensional lumber.

The Cantilevered Quickflash Joist Flashing JF X4 fits 4" X 6" up to 4 X 12" dimensional lumber.

One piece weatherproof polypropylene saddle flashing for: Decks, pergolas, entrance roofs, etcetera.

Actual interior width is slightly more than 1.5" for X2 or 3.5" for X4, to fit modern dimensional lumber.

Sold in boxes of 30.

Quickflash Joist Flashing

Quickflash also makes Electrical Flashing Panels and Plumbing Flashing Panels!

QuickFlash Joist Flashing Specifications

This Quickflash Joist Flashing JF X2 is 13 1/2 " x 4 1/2" x 2".

Cut to fit 2" X 6" up to 2 X 12" dimension lumber.

This Quickflash Joist Flashing JF X4 is 13 1/2 " x 6 5/8" x 2"

Cut to fit 4" X 6" up to 4 X 12" dimension lumber.

Actual interior width is slightly more than 1.5" for X2 or 3.5" for X4, to fit modern dimensional lumber.

  • Reduces liability
  • Sheds water away from intersection
  • Helps to prevent air leakage
  • Economical — saves time and labor
  • Non-corrosive — non-conductive
  • Only flashing that is specifically designed for wall penetrations
  • Self sealing around fasteners
  • Easy to integrate with building envelope and works with all cladding systems
  • PLUS A 10 YEAR LIMITED WARRANTY!!!

All Quickflash® Products are made in the USA Quickflash® Weatherproofing Products, Inc. products are covered by one or more of the following United States Letters Patent: 6,395,984; 6,543,186; 6,596,938; 6,649,835; 7,305,801; 7,389,616; 7,730,681; 7,640,699; 6,860,070 and other patents pending

  • Weight 20 lbs
  • Dimensions 1.3 × 1 × 1 in
  • Width 2" JF2X, 4" JF4X

  • 5
    420 (87.9%)
  • 4
    34 (7.1%)
  • 3
    15 (3.1%)
  • 2
    2 (0.4%)
  • 1
    7 (1.5%)
95% of customers rate this company 4- or 5-stars
Newest to Oldest
  • Favorite Reviews
  • Highest to Lowest
  • Newest to Oldest
All Ratings
  • All Ratings
  • 5 ★ Reviews
  • 4 ★ Reviews
  • 3 ★ Reviews
  • 2 ★ Reviews
  • 1 ★ Reviews
Cassandra P. Verified Customer
11-01-25

Its nothing like what I thought it was but buying and shipping process was smooth.

Shawn S. Verified Customer
11-01-25

Easy ordering and fast delivery

Sophia Verified Customer
10-31-25

I spoke with the person in the Technical Support department who listened and understood my complicated circumstances and made the perfect recommendation. I received the product within a couple of days and before the weekend ended, the job was complete and I am very pleased with results. Thank you, Eco Building Products for your support and product recommendation.

Luis J. Verified Customer
10-26-25

Good jop

Ed G. Verified Customer
10-25-25

The staff gave me good advice on how the products work and which ones to use. And they shipped it here really fast.

Jillian B. Verified Customer
10-25-25

I didn't get the one I wanted but was quickly offered a different one or wait till more came in.

Jean H. Verified Customer
10-24-25

Thumbs up

Bahram S. Verified Customer
10-24-25

******

A. S. Verified Customer
10-24-25

Easy to order and arrived on time

Robinson H. Verified Customer
10-20-25

good service and quick fulfilment

slide 3 of 50

Customer Reviews

Based on 1 review
0%
(0)
100%
(1)
0%
(0)
0%
(0)
0%
(0)
A
Anonymous

Would be great if the joist flashings had flange for the bottom of the joist.

Quickflash Joist Flashing Deck

Quickflash Joist Flashing - Box of 30

$97.50