If caulk shrinks during drying, reapply. Exterior Sealing exterior cracks and seams is an important part of home maintenance. Interior Sealing each room on the inside is the only way to prevent jets of air from coming inside. A good interior caulking job will increase the comfort of your home immeasurably. You may find gaps so wide that oakum or foam caulk are required.
Several types are now available and are easily installed.
The contents of this manual are offered for guidance. This report does not reflect official views or policy of the above mentioned institutions. Mention of trade names or commercial products does not constitute endorsement of recommendation for use.