Spalling brick repair for chimneys in Riverview

Setting the replacement brick

BIA's maintenance guidance lays out the method. The surrounding bricks are dampened but allowed to absorb the surface water, the replacement brick and the opening are fully buttered with mortar, and the brick is centered and pressed into place.

Excess mortar is struck off, the joints around the new brick are pointed to make sure they are full, and they are tooled once the mortar is thumbprint hard to match the profile of the existing joints.

Full joints around the new unit matter as much as the brick itself, because gaps there would let water straight back into the repair.

Repairing brick on a painted or coated chimney

A painted or coated chimney hides the brick, so damage can progress behind the finish before it shows. Peeling in sheets, bubbles and flaking brick visible through gaps are the usual signs.

The Brick Industry Association links film-forming coatings to spalling when moisture is trapped behind them. When we repair a coated chimney, we assess how the finish affects drying and explain what that means for the new bricks and for any refinishing.

Tell us what the chimney was painted with if you know. It helps us plan the repair and the finish.

After the new bricks are in

Once the bricks are replaced and the water entry has been dealt with, give the chimney time. The Brick Industry Association advises waiting several months after repairs before deciding whether a water repellent is needed, because the repairs often solve the moisture problem on their own.

Keep the estimate and the completion summary, including the brick and mortar used, for future reference. Watch for new changes rather than assuming every mark on older brick is the same defect.

If loose material or dampness returns, call for another look before anyone adds a patch.

White bloom on newly repaired brick

Fresh masonry can show a light white bloom in the first months after a repair. The Brick Industry Association calls this new building bloom and notes that it generally fades as the new work dries and weathers.

Efflorescence that appears more than a year after work is finished is a different signal, which BIA links to excessive water penetration or poor drainage. If white deposits come back strongly after the first year, call us for another look.