Frequently Asked Questions (FAQ)


Why do you recommend waterproofing?

Water penetrating into structures causes corrosion of steel which yields lower load bearing capacity and even a sudden collapse during a powerful quake. The water causes the concrete to degrade and crack. The waterproofing application provides not only safety of building but also healthy and comfortable environments by avoiding formation of bacteria and mold, and water from dripping off the roof or ceiling.


Is it possible to provide waterproofing by ceramic or mosaic application?

Products such as ceramic and mosaic are tiling materials and are not waterproofing materials. Waterproofing materials should be used for waterproofing.


Is it necessary to apply waterproofing if no ground water is observed on the soil where the building is to be located?

Even not underground, the soil moisture and surface waters may cause corrosion (rusting) on the foundation by time. Therefore, waterproofing should be applied on the ground slab and foundation walls.


I just phoned a waterproofer and he told me outside work isn't necessary for basement leaks. Then I called another. He says it sounds like an extensive outside job. Can you help?

Of course. First of all, both responses are premature: Neither of them inspected your basement. New Poona Concrete System's would do that before answering or guessing. Since you don't describe the problem, we wouldn't presume to say what's required yet. But because neither person you spoke to looked at your basement before giving you those diverse answers, we'd be wary of their professionalism.

The first responder who said that it was interior work might have said so because he only does interior work. That may be the extent of his waterproofing expertise, and it’s not enough for a homeowner to have faith in. The other answer that mentioned "extensive and exterior" is puzzling. Why that guess was ventured, without benefit of a visual inspection, we can't say.

Inspection is absolutely vital to accurately diagnose causes. Exterior evidence - such as foundation / structural damage, built-up water around the exterior, ground grading or grade-steepness contributors, clogged, improperly installed or inadequate gutters / downspouts, groundwater concerns including water tables - can all play a part and must be assessed. Interior conditions must likewise be examined before deciding on treatment and cure. Wall or floor cracks, cove or specific-point leakage, types of wall deterioration or discoloration and where it appears, basement wall bulges or bowing, and signs of efflorescence (white, chalky wall substance) are all symptoms to evaluate before recommending the proper fix.

Quick, unfounded answers like the ones you received should make you think twice about these responders' waterproofing abilities.

And, getting back to if we can be of help? Yes, we can. Talk to New Poona Concrete System instead. You'll get the professional inspection and opinion you deserve - and repairs tailored to fixing your problem.


My neighbor says epoxy is very good for structural repairs, like basement cracks.

Your neighbor is only half-right. Epoxy is very durable and is indeed a good product for structural-strength rebuilds of severe foundation-stress situations or cases of major damage, like an earthquake. So, you may ask, why wouldn't a material that fixes something as bad as earthquake damage work extra-great on my basement cracks? Several reasons - and reasons why NPCS's doesn't usually recommend epoxy injections as a waterproofing solution.

While epoxy is highly durable, it's also very rigid. It doesn't tolerate extended movement well and this fact can hinder your basement (and home) from its natural tendency to expand and contract. As you'd guess, a rigid-setting material like epoxy has the potential to create additional cracks and structural failures. Most important, epoxy is best used in dry-condition environments. Its strong adhesion properties are reduced if used on moist or wet surfaces - like a leaky basement. It's not considered a true "water-stop" material like polyurethane is, but some companies and do-it-yourselfers use epoxy.


A waterproofer told us that outside work isn't really necessary. Is that true?

Probably not. Some contractors might tell you that because all they do is interior work. They want you to believe that sealing cracks on the outside of the wall is unnecessary. But does that sound reasonable? Look at the picture to the left. This house has open cores all around and no interior system would completely resolve this problem. You might not see any water, but you would still have water, dirt, air and bugs coming into the walls.

Your best bet? Find an experienced, full service waterproofing contractor who can diagnose your particular situation and provide you with a complete waterproofing solution that will work for your home.


It only leaks after a heavy rain. Can I use a waterproofing paint to fix it?

No! Waterproofing paints are designed to seal walls to prevent moisture from passing through. Moisture is completely different than water seepage. Look at it this way: if you had a leak in your roof and you used waterproofing paint on the ceiling to stop the leak, would the roof be fixed even if it stopped leaking? The answer, of course, is no. You'd still have to have the roof fixed properly even though the water may be stopped for a while.

It's the same with waterproofing basements. You might be able to find a paint that will stop it temporarily but the water is still there pushing on the wall or floor. It won't go away all by itself. You need to find a way to remove the water because it's not supposed to be there.


What materials do you use to make basement water-leak repairs?

Glad you asked. After inspecting and deciding on the best method of treatment, we will only use the best-quality materials. For example, New Poona Concrete System's often uses a high-pressure polyurethane injection system. We've had great success with this product and procedure in resolving many water leakage problems - like cracks in concrete walls, repairing cold joints, expansion joints and "working" cracks (called "working" since they expand and contract under environmental influences). The condition you are repairing will dictate the best materials to use, but polyurethane, properly applied, has the chemical characteristics to create an excellent, lasting seal for most waterproofing cures.

Highlights of polyurethane injection system repairs are listed below,* but we'd be happy to explain their precise benefits to you personally:

  • Negative side application is possible.

  • Deep penetration into very small cracks, ensuring full coverage.

  • The foam increases in volume to fill cavities and voids and adjustable gel times are afforded by the polyurethane injection system.

  • Has excellent bond-to-wet surfaces, perfect for existing-moisture conditions; property characteristics are so reliable that our injection system is approved for underwater-injection applications.

  • Possesses elastic strength and tolerance for movement - to retain effectiveness while accommodating normal foundation shifting.

  • Material is inert after curing, has constant volume and exhibits virtually no shrinkage.

  • It's approved for contact with potable water.

  • Most important, when applied by professionals like New Poona Concrete System's, the polyurethane injection system does not create new cracks.


Do you have customer service?

Of course! Our friendly and knowledgeable customer services reps are available to answer your questions 24/7/365.