It is becoming increasingly common to use a peel-and-stick flashing membrane to protect the top of joists and beams when framing the deck structure. These products extend the life of the deck structure by diverting water and sealing areas where decking fasteners are installed, thus keeping the wood dry and decreasing the risk of water damage and rot.
Installing joist tape is more time consuming and labor intensive than using a joist cap such as Imus Cap, but the lower cost of joist tape products makes their use attractive to contractors and DIYers.
In a Professional Deck Builder article, Scott Gibson wrote, "The ideal flashing should not only resist corrosion, but also hold up in sunlight, install easily, and cost a reasonable amount".1 When we decided to add a joist tape product to our offering, we challenged ourselves to create the ultimate deck flashing tape.
The product we came up with, Imus Seal, has a high-performance butyl adhesive, the ideal thickness for strength and durability, and is available in several sizes with great prices. The comparison table below shows why Imus Seal is the clear standout among deck flashing tapes.
|Imus Seal||Trex Protect||Nichigo G-Tape 3040BK||DeckWise WiseWrap JoistTape||Cofair Products Deck Flash Barrier||Grace Vycor Deck Protector|
|Thickness||20 mil||20 mil||8.7 mil||35-40 mil||25 mil|
|Roll Size||1-5/8” x 50’
3-1/8” x 50’
4” x 50’
6” x 50’
|1-5/8” x 50’
3-1/8” x 50’
|2” x 65’
4” x 65’
6” x 65’
|3" x 75'||3" x 75'||4" x 75'
6" x 75'
|Price||from $16.99||from $25.45*||from $18.29**||from $34.95*||from $22.19*||from $28.95*|
* Price from Amazon on 04/04/2018
** Price from GTapes USA on 04/04/2018