To remedy this issue i installed backer rod in the gap that i then covered with concrete crack sealant.
Air gap in concrete wall stell.
This will hopefully be the fix that keeps that wall of the sunroom nice and dry.
I have a couple of follow up questions.
It seems as you are describing a system that eliminates an air gap between the foundation wall and the warm side of the.
They generally appear in low slump concrete and can be found underneath irregular non spherical shaped pieces of crushed aggregate.
If the membrane was placed against the concrete on the inside of the basement it would create an unwanted air space see above.
Without the addition of the foil surfaces the r value of the non reflective air gap is small r0 16.
The air gap membranes are placed on the outside of the wall below grade with the little dimple feet in contact with the concrete or masonry.
Down no reflective surfaces r 0 85 summer or r 1 02 winter.
The thickness of air cavity is a very important design parameter that governs its effectiveness by controlling the heat transfer coefficient as in case of insulation.
The air voids are caused by air trapped between the mold surface and the concrete.
Up no reflective surfaces r 0 75 summer or r 0 87 winter heat flow direction.
The structural wall is wrapped or coated with an air barrier membrane and extruded polystyrene insulation board is detailed over the air barrier.
The gap in question was previously filled with either fiberboard or concrete crack sealant but enough of it has deteriorated to conceivably allow moisture in.
The cavity wall gap comes next and then the exterior façade material often brick but also precast concrete metal panels etc.
For an air gap to improve the thermal performance of a building element it requires the addition of a low emittance surface shiny aluminium foil to one or both sides of the air gap.
A small price to pay to help protect the investment you have made in your new or existing steel shed.
An alternative product for other profile options not seen here like multiclad k panel totalspan and for other wall sheet profiles see retroseal superseal.
It has been found that with gaps broader than 50 mm movement of trapped air due to temperature gradient starts that in turn increases the coefficient of heat transfer.
For a 3 4 air gap or air space 30 heat flow direction.