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5gl Fiberlock IAQ9000 Masonry Waterproofer

Item #
5 Gallon Pail    Qty: 1
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  • Coverage: 100 sq ft per gallon
  • Goes on white, dries white
  • Contains EPA-registered antimicrobials
  • Holds back 10 lbs of water pressure per square inch
  • 10 year warranty
Availability: Typically in stock (Details)
Store Pickup Not Available

Product Information

This mold-resistant waterproofing coating is guaranteed to stop water intrusion.


Fiberlock IAQ 9000 is a low-odor waterproofing coating that is specially formulated to stop water from penetrating through a variety of interior and exterior surfaces, including above or below grade masonry walls. 


Fiberlock IAQ 9000 is ideal for use on interior and exterior surfaces including above or below grade masonry walls, cinder and concrete block, stucco, brick, retaining walls and foundations. This high-strength, low-odor latex formula creates a matrix which can hold back 10 pounds of water pressure per square inch - Equal to 22 feet of water.


Contains an EPA-registered fungicide to prevent the growth of mold and mildew on the cured film and has been independently tested and passed ASTM G-21 and ASTM D-5590.


IAQ 9000 can be tinted to any off-white or pastel color and is easy to apply with brush, roller and/or airless sprayer.



Fiberlock IAQ 9000 Mold-Resistant Masonry Waterproofer can be applied by spray to exterior and interior masonry structures, providing certain precautions are followed.


The key to obtaining satisfactory waterproofing is to be sure a continuous film of waterproofer is applied. After applying two (2) coats of Waterproofer, there must be no pinholes or voids in the film. Under ideal weather conditions, spraying alone will accomplish this. On exterior applications where that are extremes of temperature, humidity and wind conditions, spraying alone may not yield a continuous film.


If, when applying a second coat of Waterproofer, it is noted that pinholes are still present, the second coat should be back-brushed or back-rolled to make sure a continuous film is obtained. In certain cases, where extremely porous or very irregular masonry is being coated, a third coat of Waterproofer may be necessary.


On irregular surface block, such as split-face block, the surface area of the block is greater than that of smooth-face block because of the texturing. On these surfaces, the linear coverage will be lower than 75 square feet per gallon. In certain cases the linear coverage may be as low as 40-45 square feet per gallon.


It is a good practice to test coat a small area of the masonry to be waterproofed to determine what painting techniques will be required. The material must be sprayed without diluting; meaning specialized equipment must be used.



More Information
Prop 65 Text This product can expose you to chemicals including Titanium dioxide and Silica, crystalline which are known to the State of California to cause cancer. For more information go to
Max Coverage Per Gallon 100
Application Mold Remediation
Color White
Category Specialty
pH 9.5
Brand Fiberlock
Approved Use Mold Remediation
Condition new
Manual / Schematic