Sani-Tred - Basement Waterproofing System



PermaFlex Qualities

Standard Application Rate: 240 sq. ft. per gal on concrete, wood, block, brick, stone/mortar as well as other standard building materials. Approximately 300 sq. ft. per gal when applied to steel, aluminum, cast iron, fiberglass and most non-porous materials. After application and cure, PermaFlex leaves a thick layer of smooth rubber approximately four times the thickness of a household garbage bag, (2 coats - approx 14 mils thick).

SANI-TRED PermaFlex is a single component (1 part), liquid rubber "ULTRA ADHESIVE" paint-like coating. After cure, there is little resemblance to paint. PermaFlex is a paint replacement product, self-priming, easy to use, easy to apply and cures reliably even in extremely cold temperatures. A good analogy of PermaFlex is "a roll on, seamless, flexible liner that bonds permanently to the surface and beneath the surface". PermaFlex bonds permanently to most all standard building materials. PermaFlex molecularly welds to previous applications of PermaFlex, LRB and LRB/TAV mixture. PermaFlex can be brushed, rolled or even sprayed (air assist).

If solid cured PermaFlex could be removed from its applied surface, it would be in the form of extremely pliable sheets that may be pulled, stretched, twisted and when released it will reliably return to its original size/shape.

PermaFlex Elongation PermaFlex PermaFlex Application

The photos below shows a high quality concrete patio block which was coated on one side with PermaFlex that has been tinted red to allow better visual detection of the Flexible Penetration® process. The block was then broken in half to show it's internal cross section. Notice the penetration of the red PermaFlex throughout the entire block!

PermaFlex Deep Penetration "Like O-ring fingers" Seen Here Penetrating About 1-1/2”

Sani-Tred Permaflex-Al Waterproofing Products Permaflex Waterproofing Light Grey PermaFlex Penetration

The unique adhesive and penetrative properties of PermaFlex allow SANI-TRED to provide a complete water tight flexible vapor barrier above and within the surface as though it is one seamless application. This vapor barrier eliminates exterior humidity and problem radon by stopping water, moisture, vapor and problem radon from migrating through foundation walls and floors due to negative hydrostatic pressure and/or moisture vapor drive. Basically it is impossible for PermaFlex to bubble, chip, peel or delaminate from the substrate.

PermaFlex was originally designed and used as a heavy duty, hard wearing, exterior, commercial/industrial floor coating. This allows PermaFlex to be used where complete waterproofing and extremely heavy traffic usage is expected. Sani-Tred products are even rated for vehicle traffic! PermaFlex is so tough it may be regularly cleaned with hot water, high pressure washing.

PermaFlex Color Chart

Available Container Sizes:

  • 1 Quart Steel Can
  • 1 gallon plastic pail
  • 5 gallon plastic pail

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PermaFlex Unique Qualities:

  • Flexible Penetration® - When PermaFlex is applied to the substrate it will penetrate deeply into the pores of the substrate (foundation building material) then cure as tough as a truck tire therefore it is impossible for Sani-Tred products to ever bubble, peel or delaminate.
  • Permanent Elongation® - PermaFlex will never become harder or brittle with age and will maintain its flexibility indefinitely.
  • Elongation Memory® - When PermaFlex is drastically stretched and released it always returns to the original shape and size preventing distortion of the original shape and size
  • Extremely durable with 2,030 psi tensile strength.
  • Incredible strength Shore Hardness of A 85.
  • Amazing 590% elongation.
  • Single component liquid polyurethane with both manual and machine application capabilities which cures throughout its entire volume at extremes of dampness and cold without adversely affecting the cured product.
  • PermaFlex has the ability to cure tack-free in 4 hours, or less, at temperatures 70° F or higher and the ability to cure overnight at temperatures exceeding minus 15 below zero Fahrenheit and still retain its cured qualities.
  • Freshly applied PermaFlex may be subjected to rain, snow, or extreme cold without affecting its curing.
  • High solids content and extremely low V.O.C. What Is VOC?
  • PermaFlex is solvent-free.
  • It's Non-Flammable in liquid or solid form.
  • A shelf life of 2 years- nearly 4 times that of other urethanes.
  • Bonds permanently to properly prepared concrete, wood, aluminum, steel, some plastics, as well as most all other standard building materials without blistering, cracking, peeling, or delaminating, even in the constant environment of an underwater installation that is perpetually subjected to alternating situations of boiling temperatures or extreme cold of -45 below zero Fahrenheit.
  • Even as a liquid, PermaFlex may also be subjected to extreme cold during shipping, handling, & storage without ill effects.
  • Molecularly bonds/welds to itself, new-to-old, at any stage of curing or age with proper surface preparation.
  • Impervious to high humidity conditions, during or after installation. High humidity actually enhances the curing of PermaFlex.
  • Its’ Non-hazardous designation allows PermaFlex to be packaged, handled, & shipped at the lowest possible cost and be applied to sensitive materials like Styrofoam.
  • "Fool-proof" user friendly qualities allow PermaFlex to cure regardless of applicator error. All will cure in a reasonable time without costly removal, disposal, or irreversible damage to the project.
  • SANI-TRED PermaFlex always fully cures to form harmless solid polyurethane. This important quality assures that no liquid residual remains in used or partially used and discarded containers, which is a major cost saving advantage, eliminates hazardous waste disposal expenses. Often other materials are unable to ever cure as separate components, this includes, and is especially true, of multi-part or plural component coating materials that are rated as 100% solids.
  • SANI-TRED PermaFlex is completely water-proof, "not water resistant" like other products.
  • PermaFlex will never delaminate in the presence of constant immersion, standing water on a raw edge, in the presence of Moisture vapor drive or even negative hydrostatic pressure.

PermaFlex Limitations:

  • Not to be used as the ‘final top coating’ in pools or where there is a high concentration of chlorine. Sani-Tred products are resistant to ‘chlorinated water’, just not high concentrated chlorine used when ‘shocking’. Topcoat using a good 2-part epoxy for extreme chemical resistance.
  • Never blend water with liquid PermaFlex (chemical reaction, foaming will take place)
  • Never reduce or thin PermaFlex with alcohols or any solvent which may contain alcohol (destroys product, prevents curing)
  • Not to be used for high temperature applications where the area will be exposed to above 250 ° F
  • High specific gravity, thick, viscous liquid requires great pressure to airless spray @ 70° F. Best applied when brushed, rolled or sprayed air-assist HVLP (High Volume Low Pressure).




Jhon Jessen

Five years ago our basement was more of a swimming Floor then a useable basement. The walls were fieldstone with mortar. The floor was cracked in so many places that after it rained the water came up like springs!...READ MORE

Todd Brannan

My name is Todd Brannan and I ordered the basement waterproofing  system a few months ago. Thanks sanitred, now I'm setting things on the basement floor I could have never put there before. Good Product... READ MORE

Larry Piccirilli

I am totally impressed and pleasantly surprised.  I am highly recommending the Sani-tred system to my friends even if they don't have water problems.  I figure if I tell everyone about it, they will remember where to come and get the info...READ MORE

Stu Cassell

Our swimming pool was losing 2-3 inches of water a day. We had two different pool companies attempt to fix the leaks. Neither was successful...READ MORE

Wes Lukaszek

First of all, I want to thank you for your expert advice about your products. Everything worked as you said it would. Your products are very easy to work with...READ MORE

Curt Hugo

I wanted to let you know I used your product, PermaFlex and LRB/TAV on the cracks on my basement wall. I'm very impressed with the results....READ MORE