You was old foundations. Served it to you more years. And here unexpectedly it breaks. what to do in such situation? About this problem you can learn from this article.
First has meaning find specialist by fix old foundation. This can be done using yandex or bing, site free classified ads. If price services for repair will afford - consider task successfully solved. If no - then you will be forced to repair their forces.
So, if you all the same decided own practice mending, then the first thing must get information how repair old foundations. For these objectives one may use any finder, eg, rambler, or review old numbers magazines "Junior technician", "Repair own" and etc., or ask a Question on popular community.
I think this article helped you fix old foundations. In the next article I will write how repair blender brown or blender brown.