Countersink nails - this is how it works

If you find nail heads sticking out in old plank floors, this can be problematic. Why you should sink nails, how to do it correctly, and which tools to use for it, you will find out in detail in this article.

Nails in the plank floor

If you want to recondition an old, old wooden floor, you will usually sand it down.

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So that the heads of the nails that are stuck in the boards are not also sanded, the nails must first be countersunk. Otherwise grinders can be damaged by protruding nails. In addition, the nails would later protrude too far from the worn wood surface.

You can get countersinkers in different sizes in tool shops, sets with different sizes usually cost from around 10-15 EUR.

Countersink nails

A so-called countersink is usually used to countersink nails. The tip of the countersink should be a suitable width (the larger, the better it usually works). In addition, the weight of the hammer must be sufficient to drive the nail really deeper into the wood.

If nails cannot be countersunk, you can first try a larger countersunk pen and a heavier hammer. In some cases, especially if the nails are rusted (and thus swollen), this is still of no use. In this case one can only try to remove the nails from the wood.

Seal nail holes

If there are any indentations left after countersinking (and later after sanding), these can be closed with a matching wooden spatula or wood wax. The repaired area should then be carefully sanded over.

Tips & Tricks The damage that protruding nails can cause to the grinder should not be taken lightly. In some cases, not only does the sandpaper tear, but the roller of the sander is also damaged and the dust bag can even catch fire (sparking).