Solid hardwood floors must be fixed into position by either gluing or nailing down to the subfloor 🙌 Engineered hardwood floors can be glued or nailed into position, but they also have the option of being floated over an underlay 😉 The two choices for fixing hardwood floors into place are to glue them to the subfloor or secretly attach the flooring to it 😊 Your subfloor determines which method to choose. If your subfloor is concrete, glue the hardwood. However, wood subfloors can be used for either type of installation. If you plan on attaching your hardwood floor to the joists then this is what you should do. Need to secret nail They will be put in place. 
Use a flexible adhesive to glue a concrete floor made of engineered or solid wood. This will allow you to: flooring to expand and contract naturally without causing any damage to the planks. Sika MS Flexible Flooring Adhesive Tube with a trowel is recommended, and Sika 52 Wood Flooring Addhesive Sausage using a barrel gun. Both are suitable for engineered and unfinished wood floors. Sika T54 Flexible Timber Flooring Adhesive is recommended for wood floors with a width greater than 150mm. This glue will be stronger. Acey vann (Udaipur), India, last edited 22 Days ago 
Woodandbeyond.com The glue down method is used to install wood floors. It involves using an adhesive, bonding agent or glue directly on your subfloor. Wood flooring that glues down is a great option for concrete floors or wooden subfloors. That said, if you’re using this method over a concrete subfloor, you do need to make sure that there’s no dampness in the subfloor whatsoever. If there’s any doubt about dampness, we recommend that you install a two-part epoxy damp proof membrane to make sure that none of the residual dampness rises into your new floor, causing future damage. Breianna Jean (Huaihua in China), edited this article 3 days ago. 
Perhaps you have been exposed to horror stories about wood. Flooring which has risen up in people’s homes There are also concerns about gaps forming after installation of solid wood flooring. These problems can all be prevented. One of the best ways to prevent a catastrophe is to ensure that your location conditions are ideal before installing solid wood flooring. An article was written about how humidity and moisture can affect wood flooring. You must perform a variety of tests in the area where your flooring is being installed. This will help ensure the safety of your flooring. If one or more of the above tests fails, you must investigate the problem and fix it before the floor is delivered to the site.