Like many aspects of drywall, it's all depends on your skill & knowledge. I've been in drywall over 30 years, and have run my own business for about 15 of those years. I specialize in drywall repairs and mesh tape is absolutely the best tape to use, for my application. And I've NEVER had a call back because of tape failure, joint cracks, etc. Does that mean it can never crack, of course not, any tape can crack, and I've fixed THOUSANDS of cracks, and have seen both types of tape crack.

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The big advantages to Mesh tape are you can apply it to the joint, and immediately coat it, which brings it to the taped, then coated step when using paper. With paper, it takes 2 days to get to that same point. If you use fast setting joint compound, (ie hotmud), you gain the added benefit of almost no shrinkage, allowing you to finish the work faster, plus you can apply multiple coats in one day with hotmud. The other big advantage is you can't get blisters with hotmud, something that plagues MOST all amateurs.

I have no problem whatsoever in coating it and making it not show, but again, that's because I'm the best at what I do, with tons of experience. You as an amateur will not be able to achieve the same quality I can, BUT, with a little extra work, you can get close enough to suit you in most cases.

I recommend checking out my YouTube channel at www.thatkiltedguy.com where I actually have a video discussing just this subject, as well as numerous others that should help you all out a lot. Seeing a video is often more helpful than a verbal discussion of the subject.

Thanks, Guy, That Kilted Guy.com

Master the Art of Plastering with Fiberglass Mesh

Table of Contents

1. Introduction
2. Understanding the Need for Fiberglass Mesh
3. Benefits of Using Fiberglass Mesh
4. Where To Use Fiberglass Mesh
   • 4.1. Reskimming Older Properties
   • 4.2. External Renders
   • 4.3. Lath and Plaster Walls
   • 4.4. Bathroom Floors
   • 4.5. Other Applications
5. Choosing the Right Fiberglass Mesh
6. Preparing the Wall for Application
7. Installing Fiberglass Mesh
8. Applying the First Coat of Plaster
9. Dealing with Fraying and Joints
10. Applying the Second Coat and Finishing Touches
11. Conclusion

Introduction

Welcome to this guide on fiberglass mesh and its applications in the construction industry. We will explore the benefits of using fiberglass mesh, where it can be used, and how to properly install it. Whether You are a professional plasterer or a DIY enthusiast, understanding the importance of this versatile product will help you achieve a Flawless finish while preventing cracks and ensuring long-lasting results. So, let's dive in and discover the wonders of fiberglass mesh!

Understanding the Need for Fiberglass Mesh

When working on older properties or surfaces with potential weaknesses, such as hairline cracks or loosened plaster, it is crucial to find a solution that can reinforce the skin coat and prevent further damage. This is where fiberglass mesh comes into play. Unlike traditional methods that rely on hessian or scrim tape, fiberglass mesh offers superior strength and durability, making it the go-to choice for crack prevention. By embedding this mesh into wet plaster, you can Create a flexible and resilient surface that withstands stress and movement, minimizing the risk of cracks appearing over time.

Benefits of Using Fiberglass Mesh

1. Crack Prevention: The primary benefit of fiberglass mesh is its ability to prevent cracks from forming in plastered surfaces. By reinforcing the skin coat, the mesh acts as a barrier that distributes stress and minimizes the chances of cracks appearing.

2. Versatility: Fiberglass mesh can be used in various situations, including reskimming older properties, external renders, lath and plaster walls, bathroom floors, and more. Its versatility makes it an essential tool for plasterers and builders.

3. Easy Installation: Applying fiberglass mesh is a straightforward process that does not require extensive training or specialized tools. With proper preparation and the right technique, anyone can achieve professional results.

4. Time and Cost-Efficiency: By using fiberglass mesh, you can save time and money by reducing the likelihood of callbacks or comebacks due to hairline cracks. The Durable nature of the mesh ensures a long-lasting finish that will stand the test of time.

Where to Use Fiberglass Mesh

4.1 Reskimming Older Properties

Reskimming older properties is a common task for plasterers, and it often involves dealing with fragile walls and potential weaknesses. Fiberglass mesh can be a game-changer in such situations, as it reinforces the existing plaster and prevents hairline cracks from surfacing. By scraping off loose paint and removing any weak areas, you can create a sound surface ready for the application of fiberglass mesh and subsequent coats of plaster. This ensures a flawless finish without the worry of cracks appearing in the future.

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4.2 External Renders

External renders, such as sand and cement or acrylic renders, can also benefit from the use of fiberglass mesh. By embedding the mesh in the render, you reinforce the surface and prevent cracks caused by weather changes and natural movements. This is particularly important in climates with temperature fluctuations or areas prone to seismic activities. The fiberglass mesh acts as a support system, ensuring the longevity and durability of the render.

4.3 Lath and Plaster Walls

For older properties with lath and plaster walls, fiberglass mesh comes as a savior. Instead of ripping off the existing plaster and starting from scratch, you can Apply fiberglass mesh over the sound surface. As long as the plaster is not blown and there are just hairline cracks or surface cracking, the mesh will provide the necessary reinforcement to prevent further damage. This is especially beneficial when preserving historical elements, such as cornices or Ceiling roses, as it eliminates the need for extensive renovations.

4.4 Bathroom Floors

Fiberglass mesh can also be used in tiling applications, particularly for bathroom floors. After plylining the floor and priming it for tile adhesive, embedding a layer of fiberglass mesh ensures the tiles' stability and prevents cracks or movement over time. This additional measure offers peace of mind and saves you from potential repair work down the line. By securing the tiles with a strong and supportive layer, the risk of cracks or tiles popping is significantly reduced.

4.5 Other Applications

Apart from the previously Mentioned applications, fiberglass mesh has found its way into various other situations within the building trade. From reinforcing resin renders to providing extra strength in floor screeds, this versatile product proves its worth across different tasks. Its affordability and effectiveness make it a go-to solution for construction professionals looking to enhance the quality and durability of their work.

Choosing the Right Fiberglass Mesh

When it comes to choosing fiberglass mesh, there are a few factors to consider. Firstly, ensure that the mesh is alkaline resistant, as this is crucial for its longevity and effectiveness in plastering applications. Additionally, opt for a reputable brand that offers good value for money. While there are cheaper options available, it is essential to prioritize quality and durability over cost. Look for suppliers who specialize in plastering and rendering products, as they will have a better understanding of the specific requirements and can provide the right mesh for your needs.

Preparing the Wall for Application

Before installing fiberglass mesh, it is important to prepare the wall properly. This involves scraping off any loose paint, removing weak areas, and ensuring a clean and stable surface. Carefully inspect the wall for any signs of existing cracks or damage that need to be addressed before proceeding. Once the wall is ready, apply a good mix of PVA glue to create a strong bond between the mesh and the wall.

Installing Fiberglass Mesh

The process of installing fiberglass mesh involves rolling out the mesh in manageable lengths and stapling it to the wall using eight-millimeter arrow staples. Start from the top and work your way down, ensuring a 50-millimeter overlap and smoothing out any wrinkles or bunching along the way. Pay Attention to corners, architraves, and sockets, making clean cuts with a sharp knife or decorating scissors. The goal is to achieve a tight and secure fit that will prevent the mesh from sagging or shifting during further application.

Applying the First Coat of Plaster

With the fiberglass mesh securely in place, it is time to apply the first coat of plaster. The mix should have added bonding coat for added body and strength. Start from the top and work your way down, using short stumpy sweeps to lay on the gear and embed the mesh simultaneously. This technique ensures that the plaster fully covers the mesh, leaving no gaps or weak spots. When the first coat is complete, use a speed skin or trowel to achieve a smooth and even finish.

Dealing with Fraying and Joints

After the first coat has firmed up but is still workable, it is essential to inspect the mesh for any fraying or joints poking through the plaster. These can potentially cause issues later on if left unaddressed. To fix this, let the gear pick up a little and lay some scrim tape directly over the fraying areas or joints. This will hold back the burrs and ensure a seamless surface without visible mesh or joints.

Applying the Second Coat and Finishing Touches

Once the first coat has fully dried, it is time to apply the second coat of plaster. This coat can be a fresh mix without the need for bonding coat as the first coat has already provided the necessary strength and reinforcement. Apply the second coat using standard plastering techniques, focusing on achieving a smooth and even finish. Pay attention to corners, edges, and any imperfections that may require additional filling or polishing. With the second coat complete, allow the plaster to dry thoroughly before painting or further finishing as desired.

Conclusion

In conclusion, fiberglass mesh is a valuable tool in the world of plastering and construction. Its ability to prevent cracks and reinforce surfaces makes it a go-to solution for professionals and DIY enthusiasts alike. By understanding the benefits of using fiberglass mesh and its various applications, you can achieve flawless results and ensure the longevity of your work. So, next time you encounter a reskimming project or need to strengthen an older surface, consider using fiberglass mesh as your secret weapon.

If you want to learn more, please visit our website Fiberglass Mesh For Plastering.