As for cracks in drywall, you must utilize a scraper to widen the crack and position drywall tape around it. Utilize a joint or drywall compound and force through the crack. Smooth over having a sponge. Then just sand, prime, and easily paint it around. Seal exterior walls. Applying sealant https://flood-control.gitbook.io/flood-control/cua-chong-ngap-giai-phap-bao-ve-ngoi-nha-truoc-nguy-co-ngap-lut