Frequently Asked Questions
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We installed a temporary steel sheet pile cofferdam that needs to be dewatered. The interlocks allow just enough seepage that our pumps cannot keep up with the water. Can SUBAC be used on the cofferdam interlocks to prevent water from filling in again?
Yes, SUBAC has often been used for this application. If the interlocks on the outside of the cofferdam is clean and free of growth a thin layer can be applied to stop the water. When The cofferdam is removed by a vibratory hammer, the SUBAC will become loose and fall off.
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We live on a lake and would like to have concrete stairs going into the water. Can we build underwater stairs with SUBAC?
No, SUBAC is not the product for this application.. Most likely, you will need to form the area and pour concrete. SUBAC could be used to repair underwater concrete stairs if damaged.
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We are a municipality with leaks at the ball joint on a very old steel pipe in about 15´ of water. Can SUBAC seal a leak at the ball joint on a very old steel pipe? How would it be applied? Also, ground water is coming in drain pipes, any suggestions?
After removal of marine growth around the ball joints, SUBAC can be hand applied to seal any leaks. As far as your drain pipes, clean area and apply SUBAC at each joint to stop incoming water.
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The teeth of our bucket hit an existing sewer pipe (underwater) and made a series of holes. Will your product repair holes made by the teeth of our bucket on a sewer pipe? Do we need divers?
Yes, clean the area and plug the holes with subac. Yes, you will need divers unless you can hold your breath for a very long time.
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We have used subac to patch holes on our steel bulkhead and it worked great. Will it work on wood too?
Yes, subac will work on any surface including wood and pvc.
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Will subac plug hole about 2 ½ -3” in diameter in a steel barge?
Yes, Clean off area best you can, make a ball with subac and plug the hole.
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We are working at a power plant and the keyway has worn, will your product repair the bad areas?
After you clean the area subac can be hand applied to the deteriorated areas.
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We are repointing granite block bridge foundations and the material specified is washing out due to a fair amount of current, how does subac hold up in this situation
Current will have no adverse effect and subac will not wash out. This is one of the great advantages over other products. -
We have to install an underwater square footing, approximately 10 cy, can we pour subac?
No, subac cannot be poured or pumped due to our quick set time.
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The product we are currently using cannot be used below 35°, which means we will most likely stop work for the winter. Are there temperature restrictions with Subac?
There are no temperature restrictions with Subac. Your work could continue uninterrupted through the winter.