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Frequently Asked Questions
Does MSIís injection system use an epoxy-based mix?
Masonry Solutions International, Inc. only injects materials that are sympathetic to the original structure’s characteristics. These are typically cement or lime based and have the same material characteristics as the host wall. This careful compatibility testing insures the same strengths, load distributions, and vapor transmission as the host wall.
Why not use epoxy?
Epoxies and synthetic repair materials can cause long term problems within the wall. First, the epoxy distorts the load distributions of the wall. The high-strength epoxy inclusion loads in a different manner than weaker masonry. This is particularly true in the case of historic masonry. Moreover, epoxy blocks vapor transmission, creating problems that lead to long term deterioration of the wall system. Moreover, epoxy performs poorly in the event of a fire and is less forgiving with regard to installation.
Your website mentions wall injection as a method of preventing moisture infiltration. Isnít a good tuck pointing job an acceptable remedy for a leaking masonry wall?
Certainly, if there is a good barrier of masonry behind the tuck pointing, normal tuck pointing is acceptable. Of course, if tuck pointing is done properly per the Preservation Briefs it is not an inexpensive proposition. We have seen major tuck pointing efforts that were very expensive, and at the end, the owner still needed to inject the wall to stop the water infiltration. Conversely, if the existing joints are fair to good, injection may heal the wall and stop the water without tuck pointing. Let me leave you with this; putting a ½” to an inch of mortar, with questionable bond strength and some shrinkage may reduce some water infiltration temporarily, but it is similar to painting your tooth when you experience a cavity. Eventually, the tooth will require correct repair.
How about Masonry Solutionsí fabric anchoring systems? How do they work?
Fabric anchoring systems use expansive sock containments around an anchor in order to allow for targeted injection and resulting bond to the surrounding masonry. These anchoring systems create a mechanical lock in addition to material bond, giving the most security possible. Masonry Solutions International has been working with fabric anchorage systems for nearly 20 years and continues to develop new and exciting products for heritage masonry anchoring.
Are there masonry structures simply too deteriorated to be saved?
We have stabilized masonry structures that are out-of-plumb by as much as fourteen inches! We have stabilized walls from which you could literally remove the brick with your hands. Generally speaking, if we can keep the wall stable and safe while we work, we can stabilize the wall.