Stone Foundation Repair In Manassas Virginia

This is Polyfoam used to repair gaps or movement in the stone foundation of a 100+ year old house.  It was done a while ago.  While not the preferred repair, there was a newer foam repair not four feet away!   Polyfoam is a good gap sealer and reacts well against moisture, but the UV rays of the sun causes it to deteriorate.  It will turn a darker and darker brown, and begin to disintegrate.  This newer one was very recent.  Apparently it was felt by this home owner than the first repair was working.  Stone foundations are usually very old structures.  The mortar between the stones will dry more and more as it ages.  As it dries it will crack, fall out or completely release its bond and sit there loosely.  Such old foundations should be inspected regularly and repaired, but by an experienced mason with stone foundation experience.  Mortar, properly placed, is the preferred repair.