Every spring, walk around your house with a caulk gun and a flashlight. Check under every window sill. If you see a hairline crack, seal it that day . Clean weep holes. Trim back any plants touching the sill.
If you’ve done all the above and the damp returns within a month, or you see a white, fluffy salt deposit (efflorescence) on the sill, your problem is structural. Likely causes:
Don’t just paint over it! The problem will come back. 1️⃣ Check the exterior sealant for cracks. 2️⃣ Improve ventilation in the room. 3️⃣ If the plaster is soft, you may need a professional to treat the area.
Every spring, walk around your house with a caulk gun and a flashlight. Check under every window sill. If you see a hairline crack, seal it that day . Clean weep holes. Trim back any plants touching the sill.
If you’ve done all the above and the damp returns within a month, or you see a white, fluffy salt deposit (efflorescence) on the sill, your problem is structural. Likely causes:
Don’t just paint over it! The problem will come back. 1️⃣ Check the exterior sealant for cracks. 2️⃣ Improve ventilation in the room. 3️⃣ If the plaster is soft, you may need a professional to treat the area.