What’s the Difference: Paper and Fiberglass Mesh Drywall Tape

Although various specialty tapes exist, the choice of tape in most drywall installations comes down to two products: paper or fiberglass mesh. Most joints can be taped with either one, but before you start mixing compound, it's essential to know the important differences between the two.

Paper Drywall Tape

- Because paper tape is nonadhesive, it must be embedded in a layer of joint compound to stick to the drywall surface. This is easy enough to do, but if you’re not careful to cover the entire surface with compound and then squeeze it out evenly, air bubbles will form under the tape.

- Although mesh tape can be used on inside corners, paper is much easier to handle in these locations because of its middle crease.

- Paper is not as strong as fiberglass mesh; however, it is nonelastic and will create stronger joints. This is especially important at butt joints, which typically are the weakest areas in a drywall installation.

- Paper tape can be used with either drying-type or setting-type compound.

Pros of Using Paper Drywall Tape

Smooth Finish: Paper tape tends to create a smoother finish over seams and joints, which can be beneficial for achieving a seamless look.

Absorbs Joint Compound: The porous nature of paper tape allows it to absorb joint compound effectively, aiding in a strong bond between the tape and drywall.

Cons of Using Paper Drywall Tape

Susceptible to Cracking: Paper tape can be more prone to cracking if not properly bedded into joint compound or if subjected to structural movement.

Requires Skill for Feasible Application: Achieving a smooth finish with paper tape requires skill and proper technique, especially for embedding it without wrinkles or bubbles.

Fiberglass-Mesh Drywall Tape

- Fiberglass-mesh tape is self-adhesive, eliminating the need to embed it in a layer of compound. This speeds up the taping process and ensures the tape lies flat on the drywall surface. It also allows you to apply tape to all seams in a room before applying the first coat of compound.

- While mesh tape is stronger than paper tape in terms of ultimate load, it is also more elastic. This increased elasticity means that joints taped with mesh tape are more prone to developing cracks over time.

- For the best results, mesh tape should be covered with setting-type compound, which is stronger than the drying type and compensates for the tape's elasticity. After applying the initial coat with setting-type compound, either setting or drying-type compound can be used for subsequent layers.

- With patches, where joint strength is not as much of a concern as with a full sheet, mesh tape allows for a faster fix.

- Manufacturers approve the use of paper tape for paperless drywall, but mesh tape provides the best protection against mold.

Pros of Using Fiberglass Mesh Drywall Tape

Ease of Application: The self-adhesive nature of fiberglass mesh tape simplifies the taping process, making it suitable for both professionals and DIYers.

Resists Mold and Moisture: Fiberglass mesh tape is inherently resistant to mold growth and moisture absorption, which can enhance its longevity in humid environments.

Cons of Using Fiberglass Mesh Drywall Tape

Visible Grid Pattern: The mesh pattern of fiberglass tape can sometimes be visible through thin layers of joint compound, requiring additional coats for a smooth finish.

Cost Considerations: Fiberglass mesh tape is typically more expensive than paper tape, which may impact budget-conscious projects.

Choosing the Right Tape for Your Project

When deciding between paper and fiberglass mesh drywall tape, consider the specific needs and requirements of your project:

- For Straight Joints and Inside Corners: Paper drywall tape is a reliable and economical choice. It provides good strength and can be used effectively in most standard drywall applications.

- For Uneven Surfaces and High-Movement Areas: Fiberglass mesh tape offers superior strength and flexibility. It is ideal for reinforcing joints in areas prone to expansion and contraction, ensuring long-term durability.

Conclusion

Both paper and fiberglass mesh drywall tapes have distinct advantages and applications in construction and renovation projects. Choosing the right type depends on factors such as project requirements, budget considerations, and specific application needs. By understanding the differences between these two types of tapes, you can make an informed decision that ensures a successful drywall finishing process.

For more information on drywall tapes or to discuss your specific project needs, please feel free to contact us. As a leading supplier of construction materials, we are here to assist you with expert advice and quality products tailored to your requirements.