The space or gap between the steel and the brick functions as a weep hole or weep space to allow moisture, condensation or water to escape from the cavity between the brick and framing. This space is very important to keep open, and yes it can be a bit unsightly. If this gap becomes blocked or sealed then the water gets trapped, rust occurs and after enough time the steel fails from oxidation which is the rust.
Missing or deteriorated sealants in and between brickwork and other materials such as windows, door frames and expansion joints may be a source of moisture penetration. The sealant joints in these areas should be closely observed to identify areas where the sealant is missing or was installed but has deteriorated, torn or lost elasticity. Deteriorated sealants should be carefully and the opening cleaned of all existing sealant material. The clean joint should then be properly primed and filled with an appropriately sized backer rod (bond breaker tape if the joint is too small to accommodate a backer rod) and a full bead of high-quality, elastomeric sealant compatible with adjacent materials. Sealant manufacturers should be consulted for the applicability and suitability of their sealants for expansion joint applications. Manufacturers recommend three generic types of elastomeric sealants for use on brickwork: polyurethanes, silicones and polysulfides
Caulk should not be placed between the top edge of the lintel and the masonry it supports because caulk interferes with necessary water drainage. We don’t recommend to caulk the gap between the steel lintels and the brick or masonry stone, EVER! The space or gap between the steel and the brick functions as a weep hole or weep space to allow moisture, condensation or water to escape from the cavity between the brick and framing.This space is very important to keep open, and yes it can be a bit unsightly. If this gap becomes blocked or sealed then the water gets trapped, rust occurs and after enough time the steel fails from oxidation which is the rust.
