What does 下地ボードの張替え refer to in the next two sentences?

1) 壁等の画鋲、ピン等の穴（下地ボードの張替えは不要な程度のもの）
2) 壁等のくぎ穴、ネジ穴（重量物をかけるためにあけたもので、下地ボードの張替えが必要な程度のもの）

Does 下地ボードの張替え refer to "replace the クロス of the wall (which is stuck on the 下地ボード)" or does it refer to "replace the 下地ボード"?

In the second case, if it is to "replace the 下地ボード", does it mean "to destroy the wall and create a new one" (since, in fact, 下地ボード is the wall itself)?

質問を翻訳

Before decorating concrete walls of property with wallpaper, 下地ボード is usually put between the concrete wall and the wallpaper to prevent condensation.

I translated two sentences to English as follows:

1)Such as pushpin halls on the wall, such as those are at the level that 下地ボード does NOT need to be replaced.
2)Such as nail holes and screw holes, such as those are made to hang heavy objects on the wall and at the level that 下地ボードneeds to be replaced.

If you make small holes such as pushpin halls, 下地ボード does not need to be replaced.
If you make big holes such as nail holes, 下地ボード needs to be replaced.