Repairing a Leaking Roof With Direct Anchor Caulk

Examine Flashing First

• A roof leak can be caused by moisture seeping under your flashing through the roof tiles or shingles. This occurs when flashing is improperly installed over shingles. Caulk will stay on top with the anchor and won't solve the problem of moisture seeping down underneath the flashing. If your flashing or direct anchor edges have been installed like that, you need to have them taken off and repaired properly along with the shingles around them.

Replace Damaged Materials

• Sometimes roof anchors are used to hold down roof membranes instead of providing roof safety hooks. In this case, leaks are caused most often by the anchor ripping the membrane over time. You will need to replace the membrane or at least that section to solve the leak properly. The same is true for shingles and tiles. If a tile has cracked around the anchor, caulk will not save you from future problems. Fix the damage, install a new anchor, and then caulk around it for best results.

Use the Right Caulk

• Some type of caulk is not designed for roofing applications. Choose a roofing caulk, such as a butyl mix, that clearly states it is designed for roofing. Read the instructions carefully before buying. Some caulks are not designed to be used with certain materials. Anchors tend to be made from stainless steel, so choose a caulk that will adhere properly to the anchor and its flashing for best results.

Alternatives

• Consider using solder attachment or other alternatives if you do not want to use caulk. Because metal can contract and expand over time, the usefulness of caulk on rooftops is limited. It does not always last and should not be counted on to repair a leak. High quality flashing installation, soldering and membranes together form a more dependable barrier.