Duct Record Every Bit Joist Tape

If yous’re planning a deck project, joist tape is ofttimes highly recommended to extend the lifetime of the deck’s substructure. The adhesive serves to foreclose H2O damage that would atomic number 82 to wood rot.

Joist record is not merely regular record branded for a item purpose. The specialized function is catered to through more than characteristics than but the ability to stick to a surface.

While duct record may live adept for sealing leaks inward or so applications too can be water-resistant on not-porous surfaces (e.g., metallic or plastic), it’sec risky to role it for waterproofing porous surfaces similar wood. This makes it an unreliable alternative to joist tape in woods deck applications. 

The Purpose of Joist Tape

Joist tape _{^{(amazon link)}}, or flashing tape, is a waterproof adhesive that protects deck joists, beams, as well as ledger boards from water, air, too moisture.

Specifically inwards deck structure, joist tape prevents water from remaining on the tops of joists where they are covered past decking. This uncomplicated solution tin can add decades to your deck’second life.

Think of it every bit an insurance policy that adds years before a deck substructure begins rotting and splitting. If joist record is not used, many decks will take forest rot around viii-10 years postal service-construction. 

At a depression cost (particularly compared to replacing the deck substructure), joist record is an affordable way to protect the investment yous place into your outdoor home infinite.

It functions past adhering to the elevation of joists as well as beams (leaving the other 3 sides of the wood to breathe), also equally protecting screw holes from moisture to ensure the deck foundation doesn’t rust as well as decay earlier your deck, which is weatherproofed. 

An added benefit to applying joist tape is it creates greater fastener-to-woods connections past belongings the fastener inward home more securely equally an extra adhesive layer for the screw to effort through.

Outside of deck applications, joist tape can be used on window too door openings of novel buildings to furnish additional weatherproofing.

Required Characteristics of Joist Tape

Compatible With Your Application

While well-nigh joist tapes are compatible alongside several material, it’s of import to cheque that they will adhere to the specific textile y'all’re working with.

For example, roughly tapes are compatible amongst forest, plywood, oriented strand board, too concrete piece others power be better for metallic, plastic, too drinking glass. 

Waterproof

Joist tape prevents wood rot by capping the joist with waterproof cloth to forestall water harm.

As its chief role, joist record is required to live waterproof, and so it’s typically made of acrylic, butyl, or bitumen textile. 

Strong Adhesive 

Besides the cloth itself being waterproof, the bond betwixt the tape too the wood also has to live strong plenty for H2O non to easily become trapped inwards betwixt.

Stickier tape is as well meliorate for creating a tighter seal about screws, which volition keep moisture out of the fastener-to-forest connexion together with combat rusting. 

In real warm climates, high temperatures power crusade the adhesive in the tape to melt, and so finding a joist tape specialized to resist high-temperature oozing volition ensure that this does not happen.

Ease-of-role

While not essential per se, joist record tin accept other features that relieve time and coin, such as not sticking to itself, preventing splitting from freeze-thaw cycles, or being slowly to reposition.

Some other features similar non-slip surfaces amend the traction of the deck frame for easier walking during construction.

How Does Duct Tape Compare?

While duct record _{^{(amazon link)}} has around of the same characteristics equally joist record, inward the most mutual joist tape application—wood decks—it falls brusk.

Compatible With Your Application

If yous’re using duct record for “waterproofing” a not-porous construction such equally drinking glass, metallic, plastic, or varnished wood, it should run similarly to joist tape. As seen earlier, about joist tapes are fifty-fifty made for such surfaces. 

However, in that location are two problems alongside this.

First, porous surfaces such as wood or concrete together with duct record aren’t real compatible, so the record is more probable to unstick together with, thus, not perform the joist tape part: protection from the elements.

Second, duct tape is non technically waterproof.

Waterproof

Duct record is usually labeled equally waterproof, but a examination of its waterproof office by Gaffertape.com found that this is only truthful for roughly surfaces.

During a threescore-twenty-four hour period experiment where the duct tape was applied to a surface and so exposed to rain, common cold weather, in addition to sunny spells, duct tape on porous surfaces (like woods in addition to brick) came unstuck much sooner than on not-porous applications.

Because near decks are made amongst porous wood, duct record isn’t upward to par with joist record inward this expanse. Additionally, because the adhesive is more probable to come up unstuck when exposed to water, using duct tape might actually accelerate water harm past trapping wet between the record in addition to wood. 

Strong Adhesive 

Again, on not-porous surfaces, duct record tin can live a very potent adhesive. It is frequently used to seal leaks or brand temporary repairs—fifty-fifty for applications that will live exposed to varying atmospheric condition.

However, as discussed, water exposure can compromise the adhesive force of duct record when applied to surfaces like woods. 

In damage of rut resistance, duct tape tin can rest adhesive upwardly to 140 °F (sixty °C), so if temperatures in addition to added sun rut in your part don’t achieve that temperature, yous tin trust duct record’second forcefulness.

Is There a Good Substitute?

If you lot’re looking for a substitute for joist record for deck structure, yous may live amend off applying close to coats of bitumen paint to cap the substructure rather than using duct tape. 

Sources

https://www.decks.com/how-to/articles/joist-record-what-is-it-as well as-make-one-ask-it

https://www.decksdirect.com/cognition-builders/should-i-role-joist-tape

https://www.gaffatape.com/weblog/is-duct-record-waterproof/