Tyvek® Flexwrap tape is an excellent choice for creating airtight seals around penetrations in your vapour barrier. It’s designed to handle complex shapes like pipes, cables, and window or door openings, ensuring that no air or moisture can pass through. In this guide, we’ll walk you through the steps of using Tyvek® Flexwrap tape correctly and effectively, so you can maintain the integrity of your insulation and vapour control systems.
Why choose Tyvek® Flexwrap tape?
Tyvek® Flexwrap tape is highly flexible, making it ideal for sealing around curved or irregular shapes. Whether you’re dealing with plumbing pipes, electrical cables, or structural openings, this tape can easily conform to the surface, providing a robust, airtight seal. Its elasticity allows it to stretch and contract with building movements, which is essential for maintaining long-term protection against air and moisture infiltration.
How to use Tyvek® Flexwrap tape for optimal results
1. Prepare the surface
Before applying Tyvek® Flexwrap tape, ensure that the surface around the penetration is clean, dry, and free of dust or debris. This step is crucial for ensuring the adhesive bonds well to the surface. Wipe down the area thoroughly, especially around corners and edges, to remove any dirt or moisture that could compromise the tape’s performance.
2. Measure and cut the tape
Measure the length of tape you’ll need to cover the entire penetration with enough overlap for a secure seal. It’s recommended to have at least a few extra centimetres of tape beyond the edges of the opening to ensure the seal remains airtight. Cut the tape to size and peel off the backing paper carefully.
3. Apply the tape around the penetration
Start by applying Tyvek® Flexwrap tape to the bottom of the penetration and work your way around it, pressing the tape firmly as you go. Be sure to smooth out any wrinkles or bubbles, as these can lead to air or moisture infiltration. Due to the tape’s flexibility, it will stretch to accommodate curves and irregular shapes, ensuring a snug fit.
4. Seal the edges and corners
Corners and edges are the most vulnerable areas for air leaks. After wrapping the tape around the penetration, ensure all edges are firmly pressed down, particularly at corners. You may need to apply additional pieces of tape at these points to reinforce the seal.
5. Check the seal for any gaps
Once the tape is in place, inspect the seal thoroughly for any gaps or loose sections. Run your hand along the edges to ensure the tape is properly adhered. If you find any areas that aren’t fully sealed, apply additional pieces of Tyvek® Flexwrap tape to secure them.
What you should remember
Tyvek® Flexwrap tape is your go-to solution for creating airtight seals around penetrations in your vapour barrier. Its flexibility makes it ideal for handling curved or irregular shapes, ensuring that no air or moisture compromises your insulation. By preparing the surface, carefully applying the tape, and double-checking the seal, you’ll ensure long-term protection and efficiency.
For more information on Tyvek® Flexwrap tape and other vapour control solutions, explore the product range at MG Bouw, where you’ll find high-quality materials to enhance your building’s durability and performance.
