Sheet Sander Discs | 5-Inch Hook & Loop | 40-800 Grit Pack

This sanding disc set offers many grits for your random orbital sander. Unlike an orbital sheet sander that uses rectangular paper, these 5-inch hook and loop sanding discs work well for quickly taking off material and finishing wood or metal projects. Features and Benefits - Aluminum oxide grit - Takes off material steadily and lasts a long time during use. - Hook and loop backing - Lets you change grits in seconds without losing grip. - 8-hole dust extraction pattern - Pulls dust away from the surface for a cleaner work area and longer disc life. - 40-800 grit range - Covers everything from rough stripping with 40 grit to smooth finishing with 800 grit. Applications - Wood Sanding - Start with a low grit to strip paint, then move up through the grits to get a smooth surface ready for stain. For the final finish, use 240 grit or higher. - Automotive Sanding - Use middle grits for shaping body filler and higher grits like 400-600 for scuffing primer before you paint. - Home Improvement - A good choice for refinishing old furniture, smoothing drywall compound, or general surface preparation. Quick Reference by Room Size When considering how many sanding sheets for a floor sander, the room size is a primary factor. These 5-inch hook and loop discs are suitable for random orbital sanders. A small room, up to 10 square metres, typically requires a selection of grits, perhaps 40, 80, and 120, with 5-10 discs of each. Medium rooms, up to 25 square metres, will need more, possibly 10-20 of each. For larger areas, plan for 20+ discs per grit. Always have extra to account for unexpected wear or damage. Key Factors That Increase Sheet Usage Several factors will increase the number of 5-inch hook and loop discs you’ll need. Heavily damaged surfaces, old paint or varnish, and uneven floors will all consume more sheets, especially at lower grits like 40 or 60. Aggressive sanding techniques, such as applying too much pressure, can also shorten disc life. Using the correct random orbital sander speed for the material being sanded helps prevent premature wear and avoids issues like swirl marks. Golden Rule for DIYers For DIYers asking "how many floor sander sheets do I need?", the golden rule is to always over-estimate. It is far better to have a few spare 5-inch hook and loop discs than to run out mid-project. Ensure you have a good range of grits from 40 to 800, as specified in this pack. Start with a coarser grit (e.g., 40 or 60) for heavy material removal and progressively move to finer grits (e.g., 120, 240, 400) for a smooth finish, using a random orbital sander. Standard Coverage Estimates For a typical floor sanding project using these 125mm diameter aluminum oxide discs, expect to use approximately 3-5 discs per 10 square metres for initial coarse sanding (40-80 grit). For intermediate sanding (100-180 grit), this might reduce to 2-3 discs per 10 square metres. Finishing passes (240-800 grit) generally require fewer discs, perhaps 1-2 per 10 square metres. These are estimates; actual usage will vary based on surface condition and technique. Example Calculation: 500 Sq. Ft. Room To calculate for a 500 square foot room (approximately 46.5 square metres) using a random orbital sander, you would need a substantial quantity of these 5-inch hook and loop discs. For initial coarse sanding (e.g., 40 grit), multiply 46.5 by an average of 0.4 discs per square metre (2-3 discs per 10 sq m), giving around 18-20 discs. For intermediate and fine sanding, you’d need similar quantities across different grits, ensuring a smooth finish without swirl marks. A comprehensive pack with 40-800 grit is essential.