• When it comes to sanding a hardwood floor, grit sequence is everything. If you have an average size floor that is slightly worn out, you may start sanding the floor with a 36-grit paper to remove stains on the top layer, paint and then wax. Many older homes contain lead in the floor finishes. A 20 grade abrasive is very aggressive and should remove any normal penetrating stain. AD. But if you choose the correct sanding sequence, most floors just need three passes with the big machine to acquire a smooth finish. Click here to browse our selection of sanding abrasives. We take on jobs involving all kinds of wooden floors, from parquet to pine and everything in between. Unfortunately, you have a few deep scratches. Your email address will not be published. 50-60: medium Do you think I would be okay in the 80-100 grit range? GJP Floor Sanding 27 Old Gloucester St, Holborn, London WC1N 3AX, United Kingdom. Norton Blaze Plus – Amazing Results with Just One Pass. Copyright 2019 GJP Floor Sanding | 27 Old Gloucester Street, London, WC1N 3AX | Please note, this is virtual office. By the time you are done, there shouldn’t be any old stain left on the floor. For instance, if the floor is in a bad state or old you may need to start with a coarser sandpaper to sand down to the original floor. Sand with the folded sandpaper until it dulls, flip the folded sandpaper over to … On older floors, the first step when sanding is to choose an aggressive grit … Also, like sanding a concrete floor, it is best to start with an area in a corner or near a wall. If the hardwood floor can handle another sanding, plan to be aggressive about it. This makes for a long day. You need to sand the floor at least four times using a finer level of sandpaper each time for getting a smoothly nice hardwood floor. Let’s assume that you have an average-sized room around 20 ft by 20 ft and that the floor is only slightly worn. If the floor is in good shape, start with the most common sequence, which is 40-60-100. For example, if you have a really old floor or one that is in bad condition, you may need to start with an extremely coarse sandpaper. Choose coarse-grit sandpaper, in the 40- to 60-grit range, for basic sanding and stripping. Start with 36-grit sandpaper for a floor that hasn't been sanded in a long time or that has a lot of heavy finish on it. Once you have sanded and varnished a floor, it is a shame to let the hard work be wasted.
    So, you have decided that your old and tired hardwood floor needs to be re-finished. Sometimes it takes more than just three grits to achieve a smoothly sanded floor. Replace the abrasive belt after sanding about 250 square feet for most effective results. Stop worrying. The grit numbe is generally printed on the back of each sheet. Is the stain you are refereeing to just the age and patina of an old floor? 20 grit: Use when there is a good deal of flattening of the floor needed. From here, you will want to sand the floor with a 60 grit paper, a 100 grit paper and possibly a 120 grit to get a really nice, smooth finish. Because the affected area is so small – could I do the sanding by hand? To detect nails, drag a metal snow shovel across the floor (upside down). This is usually a tricky question to answer, as it will often depend on the surface area of your floor as well as the condition that your floor is in. If the floor is uneven sand diagonally at 45° across the room in both directions. Don’t get me wrong, if all of your floorboards are rotten and you have big holes everywhere, even the best sanding job isn’t going to make it look good. brands/products/machines used. Using The Wrong Grit Sandpaper. The by far biggest mistake I see is not using the right grit paper. 60 grit: Not intended to be used as a starting grit. It is key to replace the paper often, as you will find that it gets worn out quite quickly and will become ineffective at delivering a nice, even sanding. 16 grit: Use as the starting grit for floors with shellac finishes, single layers of paint, or some very hard floors, like maple. Wax Removal – Any wax is scraped off the floor to get it ready for sanding, which costs $0.75–$4 /sq. With a little work, you can find a floor-sanding company that delivers what marketers call “dustless” service. GJP Floor Sanding are a London floor sanding and restoration company that offers a premium finishes at great value. Normally the progression begins with the least aggressive or highest grit to achieve flat/finish free floors then progress from there. The process can take a couple of a hours for a single room. Thanks for your information. He is our response…. If the floor is old, very hard, or has residual finish, it can be a bit trickier to determine the right sequence. Your email address will not be published. On this website, I intend to BARE ALL. We can arrange to meet clients at this address by prior appointment. Get in touch with us today to find out how we can bring back your floor’s former glory. This is an intensive process that strips everything from the floor by grinding it down to the natural wood underneath all that shine. For smooth finishes and removing minor imperfections, use 80- to 120-grit sandpaper. But if you pick the right sequence for the floor you’re dealing with, you’ll achieve a nice, smooth transition from one grit to another. Use a random-orbit sander for flat floors. I’m not sure what to do. This will ensure the smoothest results possible. Start with a 40-grit cut and see if the section of the floor is completely bare and flat after your pass. So countersink all nails by at least 1/8 in. So countersink all nails by at least 1/8 in. For example, if you’d like the finish grit to be 80, your sequence can be 36-50-80. If the floor is in bad shape, you will probably want to start with a 30 or 24-grit cut for the first test cut. Load the machine with coarse, 40-grit sandpaper. We’ve been wanting to refinish our old hardwood floors and really liked your advice on how to use grit sequencing. How Many Sanding Sheets for a Floor Sander? If your house was built before the ban in your country, consider hiring a floor finisher with lead certification to test your floor and refinish it safely. Most hardware stores will let you return un-used sandpaper so don’t worry too much about that. They're worried about taking off too much wood and ruining their floor. Coloring – A lot more sanding is required to get the wood to a level where a lighter stain can be applied, as you have to sand past the existing darker stain. Your sandpaper choice depends on how much sanding must be done. Probably. You will notice that you typically need more sheets of coarse paper. The floor will accept the finish evenly and look great. An orbital floor sander is even larger and more powerful than the edger, but both operate by randomly and rapidly moving a single sheet of sandpaper around the wood. 40,60,100 for maple/ cherry. If it’s not completely bare and flat, try progressively more aggressive cuts in different inconspicuous areas of the floor until you find the cut that leaves it bare and clean.