Garage and window lintel have cracks

  • Erstellt am 2025-07-25 17:22:33

Gaze1969

2025-07-25 17:22:33
  • #1
Hello,

my name is Frank. I do not build, but own a house built in 1997. I have a question about the garage lintel and window lintels. Everything I find about crack repair relates to cracks in the bricks above the lintels. These are secured with horizontally running spiral anchors. Here, I rather feel that one would have to work with vertical anchors from top to bottom.

It seems to be a Grenadier lintel. Whether steel or even stainless steel angles are installed on the right and left, I cannot say. I bought the house built in 1997 a few years ago from a bricklayer who obviously did not understand his craft. He built the entire house himself.

The garage was completely wet because he had a terrace on top. Construction: concrete ceiling elements - bitumen - screed - tiles. He only let the bitumen run up on the house side, so that the exterior walls were completely wet. This can also be seen by the efflorescence. However, I have had that fixed.

I have attached a picture from earlier of the inside of the garage lintel. Back then, the plaster was loose. We renewed it. Furthermore, today I removed and photographed parts of the loose joints. Rusted lintel anchors can be seen, which, however, are not continuous but meet in the middle. I have bent one out a little. Of course, they are not made of stainless steel. Since the walls have been dry for years now, could I now install new stainless steel anchors? How could I best proceed now?
 

Joaquin

2025-07-25 20:37:43
  • #2
Hi,

if the wall is now dry, you can replace rusted anchors with stainless steel ones. It is best to install the new anchors at an angle or vertically through drilled holes above the lintel, and tension them with injection mortar. Loose old anchors should be removed. It is important to set an individual anchor for each crack or weak point. Do not damage load-bearing components in the process. If in doubt, consult a structural engineer....
 

Gaze1969

2025-07-26 06:20:39
  • #3
Thank you for your response. So the anchors should not be placed horizontally into the crack, but a hole should be drilled from above at an angle downwards and then filled with injection mortar. It sounds to me like I need special tools to fill the drill hole with the anchor. Or should I put the mortar in first and then the anchor?
 

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