Can I use sheets as drop cloth?

Yes, you can use sheets as drop cloth for painting, and many DIYers do this as affordable alternative, especially old bed sheets, flat sheets, or blankets for protecting floors and furniture. Sheets can work as drop cloth because they are fabric, absorb paint drips, and cover large areas, but there are limitations. Thin single-layer cotton sheets may allow paint to bleed through to floor, especially if paint pools or spills heavily, because they are not as thick as 10 ounce canvas drop cloths, so you should double up sheets or place plastic sheeting underneath for waterproof barrier, particularly on hardwood and carpet. Sheets are also lighter and may shift or blow around more than heavy canvas, so tape edges to baseboards to keep in place. For best results, use old sheets you do not mind staining, as paint will permanently stain them. Old flannel sheets are more absorbent. Avoid using good bed sheets. Sheets are better than nothing and work for small to medium jobs, but for professional protection, canvas drop cloths are superior due to thickness and durability. So yes, you can use sheets as drop cloth with double layer and plastic underneath for extra protection.