When finishing drywall, one of the most common questions is what grit sandpaper for drywall should be used to achieve a smooth, professional surface. Choosing the correct grit at each stage helps prevent visible scratches, uneven joints, and poor paint adhesion. Using the wrong sandpaper can damage the drywall surface and increase the amount of repair work needed later.
Professionals in the construction and interior finishing industry, including those working with experienced suppliers like Bin Hammad, emphasize that drywall sanding is a gradual process that requires the right materials and technique.
Understanding Sandpaper Grit Numbers
Sandpaper grit refers to the size of the abrasive particles on the paper.
- Lower grit numbers mean coarser abrasives that remove material quickly
- Higher grit numbers indicate finer abrasives used for smoothing surfaces
Drywall sanding typically involves progressing from coarser grits to finer ones rather than using a single grit throughout the job.
Coarse Grit Sandpaper for Initial Drywall Sanding (80–100 Grit)
Coarse grit sandpaper is best used during the earliest sanding stage when joint compound has hardened and uneven ridges need to be knocked down. Grits between 80 and 100 remove excess material efficiently but must be used with care to avoid tearing the drywall paper.
Best used for:
- Heavy joint compound buildup
- Rough patches and uneven seams
At this stage, light pressure and controlled strokes are essential for preventing surface damage.
Medium Grit Sandpaper for Smoothing Joints (120–150 Grit)
After the rough areas have been leveled, medium grit sandpaper is used to refine the surface. Grits between 120 and 150 are commonly used for feathering joint compound edges and smoothing taped seams.
Why this stage matters:
- Helps blend repaired areas with surrounding drywall
- Reduces deep scratches left by coarse grits
This grit range is often considered the most versatile for drywall sanding.
Fine Grit Sandpaper for Final Finish (180–220 Grit)
Fine grit sandpaper is used for the final sanding pass before painting or applying texture. Grits between 180 and 220 help remove minor imperfections without over-sanding the surface.
Ideal for:
- Final touch-ups
- Preparing drywall for paint or wallpaper
This step ensures an even surface that allows paint to adhere smoothly.
Choosing the Right Sandpaper Type
In addition to grit size, the type of sanding material also affects results.
- Sandpaper sheets are ideal for flat wall surfaces
- Sanding sponges work well for corners and edges
- Sanding screens reduce clogging during extended sanding
During drywall sanding, protecting surrounding areas is important. Using coverings such as those explained in polythene sheet roll guides helps contain dust and protect floors.
Dust Control and Surface Protection
Drywall sanding creates fine dust that can spread quickly across work areas. Managing dust improves visibility, safety, and cleanup efficiency.
Helpful practices include:
- Using vacuum-assisted sanders
- Covering furniture and materials with protective film
- Securing surfaces with low-adhesion protection as described in low tack protection tape
In larger projects, wrapping and securing materials using solutions highlighted by stretch film suppliers in UAE helps maintain a cleaner workspace.
Hand Sanding vs Power Sanding
Hand sanding offers greater control and is ideal for small repairs or delicate areas, while power sanding speeds up work on larger wall sections. Regardless of the method, starting with the appropriate grit and progressing gradually is the key to achieving professional results.
Power tools require careful handling and frequent surface checks to prevent over-sanding.
Common Mistakes to Avoid
Some common drywall sanding mistakes include:
- Skipping grit levels and sanding too aggressively
- Applying excessive pressure
- Sanding without proper dust control
Avoiding these mistakes helps maintain the integrity of the drywall surface and reduces rework.
Conclusion
Understanding what grit sandpaper for drywall to use at each stage is essential for achieving smooth, paint-ready walls. From coarse grits for rough leveling to fine grits for final finishing, a step-by-step approach delivers the best results. With proper technique, surface protection, and guidance from experienced suppliers like Bin Hammad, drywall sanding becomes a controlled and efficient process.
