Drywall taping is one of those tasks that seems simple until you get started. Many beginners dive in only to find themselves dealing with uneven seams, cracks, and rough patches. Mistakes during taping can show up as noticeable flaws that disrupt the smooth, professional look you want for your walls. But with some knowledge and attention to detail, most common mistakes are easily avoided.
Here’s a closer look at the most common drywall taping Calgary mistakes to watch for, along with some easy ways to avoid them.
1. Using Too Much Joint Compound
One common issue is applying too much joint compound, or “mud.” This may seem harmless, but excess compound leads to thick, uneven layers that are difficult to smooth out, leaving you with a bumpy finish. It can also take longer to dry, increasing the chances of cracking. For best results, apply a thin, even layer under the tape and add slightly thicker layers over it. Using a 6-inch drywall knife for the first coat and larger knives (10- or 12-inch) for final layers makes it easier to spread the compound consistently.
2. Not Using Enough Joint Compound
While too much compound can be an issue, using too little is just as problematic. Without enough compound, the tape won’t bond properly, leading to peeling or bubbles. A light, consistent layer along the seam is all you need to hold the tape securely in place. Once the tape is laid down, add a second coat of compound over it to help it bond firmly and smooth the surface.
3. Failing to Embed the Tape Properly
Tape that isn’t embedded properly can result in air bubbles, lifting, or cracks. Many beginners just lay the tape on top of the compound without pressing it in fully, which weakens adhesion and results in an uneven surface. Use a drywall knife to press the tape down, starting from the center and moving outward to push out any air bubbles. Applying steady pressure as you embed the tape creates a firm bond and minimizes imperfections.
4. Choosing the Wrong Type of Tape
Using the wrong type of tape is another mistake that can impact the finish and durability of your work. While mesh tape is easier to apply, it’s more prone to cracking than paper tape, especially on seams that bear weight or movement. Paper tape, though a bit trickier to handle, offers stronger and longer-lasting results. A good rule of thumb: use paper tape for joints and mesh tape for minor repairs.
5. Overlapping Tape on Joints
Many people think overlapping tape on joints will add strength, but it actually creates thick, lumpy seams that are hard to smooth out. Overlap can also lead to uneven drying and cracks. Instead, use a single continuous piece of tape for each seam and avoid any overlap. For corners, consider using specialized corner tape or folding the tape for a clean, sharp finish that’s easy to smooth over.
6. Rushing Through Drying Time
Joint compound needs time to fully dry between coats. Rushing through drying time often leads to bubbles, cracks, or rough spots. Most joint compounds need at least 24 hours to dry completely, especially in humid areas. Check dryness by lightly touching the compound. If it still feels cold, it likely needs more time. Planning for proper drying time will give you better results and minimize touch-ups.
7. Sanding Too Much or Too Little
Sanding is key to a smooth finish, but sanding too much or too little can lead to problems. Over-sanding can remove the compound entirely, exposing the tape, while not sanding enough leaves bumps and ridges. Use fine-grit sandpaper (150-220 grit) and apply light, even pressure across the surface. Sand lightly between coats and give a final, thorough sanding after the last layer to achieve a perfectly smooth surface.
8. Skipping Primer
Many people skip primer, but it’s essential for a consistent paint finish. Joint compound absorbs paint differently than drywall, which can cause the paint to look patchy. A quality drywall primer seals the compound and provides a smooth, even base for paint. While it may feel like an extra step, priming is worth it for a cleaner, more durable final result.
9. Using Dirty or Low-Quality Tools
Low-quality or dirty tools can interfere with the finish, causing streaks, gouges, or uneven spots in the compound. Drywall knives with dried compound or other debris on them leave marks that are difficult to fix once they dry. Investing in quality tools and keeping them clean during the job helps you get smoother results and a more professional finish.
10. Ignoring Temperature and Humidity Levels
Temperature and humidity can affect joint compound’s drying and adherence. Cold or overly humid environments slow drying time, which can lead to peeling or cracking. If possible, work in a well-ventilated, temperature-controlled room. If conditions aren’t ideal, consider using a joint compound designed for all-weather application to minimize issues.
Final Thoughts – Common Drywall Taping Mistakes
Drywall taping is all about precision and patience. Avoiding common mistakes, like rushing the drying time, using clean, quality tools, and applying the right amount of compound, can make a world of difference in the look and longevity of your walls. With some attention to detail and a steady approach, you’ll be able to create smooth, seamless finishes that make any room look professionally done.