The fireplaces are structures basically many small. As soon as as your house has need of a roof to maintain to the water entering, therefore to your fireplace. The advanced parts of the fireplace are simply roofs of the fireplace. The advanced part would have to hang down from the covering of the drainage culvert. The angle of this slope would have to be a minimum of 3 inches of the fall for the foot of the operation. The flat or low advanced parts of the slope can allow that the water supplies the inner one of the fireplace. This water can cause to the efflorescenza (giacimenti white men of knows them on the surface of the mattone), the mattone that they chip (sfaldando been experiencing) and the deterioration of the mortar between the various ones mattoni.

All too much often, of the mattone of masons the mixture of the mortar of use simply to rifinire outside of the advanced part of a fireplace. The advanced parts of the fireplace would have to be constructed using the prefabbricate reinforced concrete slabs, the stone, or the concrete and solid metal of I reinforce cast steel on the place. The materials of the advanced part of the masonry would not have directly to be put in contact with the covering of the culvert of drainage of the fireplace. This I crack would have to be caulked with a concrete that flexible the stable silicone caulks. The leaks in your advanced part have possibly happened because the covering of the drainage culvert is expanded here from the heat of fires under. This expansion has cracked your protection weak person of the mortar as well as like a chick that broods from an egg. Moreover, the excessive leaks of narrowing are often developed in advanced parts fused on the place of the fireplace that difettano of sufficient the stiffener steel and/or is not cured correctly.

Moreover I have noticed that your advanced part of the fireplace does not extend beyond the external surface of your fireplace. A advanced part of the fireplace would have to extend a minimum of the inches of 1/2 and 2 beyond the face of the fireplace from all sides. This shelf contributes to maintain to the water working down the face of the fireplace. The inferior part of the advanced part would have to contain a small kerf (gocciolamento). Without the kerf, innaffi can roll under the advanced part and down flow the face of the fireplace chimney.

Your photos indicate that yours mason of the mattone it is not successful to install I flash under the advanced part of the fireplace. That that it exposes flash is the last line of defense in the war against water. That that it exposes flash is disposed under the advanced part of the fireplace. Once installed correctly, it prevents the water to supply the inner one of your fireplace. It uses the galvanized steel of branch and, or the stainless steel to this fine. It does not use the aluminum as I flash material in fireplaces of the masonry. The chemical products in mortar and concrete the indurranno ones to corrode.

The deterioration that been experimenting is normal for a advanced part badly constructed of the fireplace. When reconstructed correctly your advanced part of the fireplace, would have to carry out easy flawlessly for the next century.