Apply Elastomeric Sealant Over Backer Rod

What happens here

Using a caulk gun loaded with Tower Tech 2 elastomeric sealant, apply a continuous, even bead of sealant directly over the installed backer rod. The presenter highlights a key benefit: this method eliminates the need to completely fill the entire deep void with caulk, thus conserving material and ensuring the sealant properly spans the gap. Immediately after application, smooth the bead of sealant to create a clean, uniform finish that is flush with the surrounding exterior surface. This final step in gap repair yields a ready-to-prime surface that will accept paint evenly. Properly sealed cracks are essential for preventing moisture intrusion, which could otherwise compromise primer adhesion and the overall longevity of the paint finish.

Goal: Apply an elastomeric sealant over the installed backer rod to effectively seal the gaps, creating a smooth and durable surface ready for primer application.