How to Repair Pole Barn Piers

Identify the source of deterioration and take any action necessary to keep the repaired piers from similar damage in the future. For example, wet rot caused by pooling water can be avoided by digging drainage trenches to channel rainwater away from the piers.

Apply epoxy consolidant or wood filler to repair small problems in damaged wood not subject to structural stress.

Measure the distance from the floor to the top of the existing pier. Cut 2-by-4-inch beams to the correct length.

Insert a hydraulic jack approximately 6 inches away from the damaged pier directly under the frame where the ceiling and wall meet. Set a level on top of the frame over the jack's position and raise the frame until the level indicates the frame is slightly higher than it should be to allow ample room to insert a new pier.

Apply construction adhesive to the side of the existing pier where you intend to attach the sister pier.

Slide the new pier into the pole barn frame between the existing pier and the hydraulic jack. Sister the two piers together by pressing firmly and secure with a C-clamp at the top and bottom.

Lower the jack and remove. Place L-braces where the sistered pier meets the floor frame and the ceiling rafter and secure with screws. Remove the C-clamps after 24 hours or when the construction adhesive is set.