How can moisture prevention be handled in whole-house customization for a top-floor apartment?

For moisture prevention on a top floor, cabinets are only one part of the picture. For boards, prioritize stable options such as plywood or eco board, and use PUR edge banding or laser edge banding to reduce moisture seeping in through edge seams. Keep the cabinet body off the floor where possible, leave ventilated space at the bottom, and leave a gap between the back panel and the wall. Note that there is a ten-year warranty on cabinet bodies and they are returnable if not environmentally compliant, but water damage, moisture, and human-caused damage during the warranty period are not covered, so moisture prevention must start from the base layer. During measurement, we confirm the wall condition before deciding the closing details. In Beijing, a wardrobe upgrade with ENF eco board + PET door panel is 950–1,100 yuan/㎡; in Baoding, Langfang, Xiong'an and Zhuozhou it is 807.5–935 yuan/㎡. These are reference prices and do not constitute a formal quote; actual projects require further calculation based on dimensions, design, materials, hardware, quantity, and site conditions.