FAQ

Apply as above. Then wait 24 hours, tape sponges or clear plastic on a few surface areas and wait 24 hours again. Check the surface to see if the surface area is dark in color under the sponge or plastic. If there is no color change on the surface than DPS has stop the moisture coming to the surface and no need to apply more DPS.

It is no more than 20 minutes long and making sure that enough DPS has been applied to the surface, and watching for any dry spots during this time. AS dry areas appear just apply more DPS to the dry areas. Any areas where DPS is pudding on the surface for more than 10 minutes remove with a broom or clean mop to areas that will still absorb DSP so that at the end of 20 minutes all DPS has penetrated into the concrete and there is no surface sheen.

DPS is applied by using a sprayer at (20 to 30 psi) a mop.

In most cases just one application is needed. When situations where high moisture levels are present in the concrete more than one application may be needed to stop the moisture.

YES! Apply DPS within the first 12 hours after a new slab has been finished.

YES! Apply as soon as the concrete can be walked on without leaving any marks and the surface sheen is gone. No need to wait 7 days or more.

Topical coatings are paints, clear sealers, adhesives, epoxies, tiles and glued down carpet.

YES! Properly treated surfaces will except and impove the bonding of paints, glues, epoxies, tiles and glued down carpet.

NO! DPS is formulated to penetrate into the concrete up to a ½ inch or more.

DPS is a water-based internal sealer creating a moisture barrier within the concrete to stop moisture coming to the surface of concrete slabs and walls.

DPS reacts with the free lime and alkali within the concrete to first gel and then over the next 30 days it with grow crystals to fill in the voids and capillaries that are left behind when water is hydrated out of the concrete and voids put there by air entrainment in the concrete.

No! The surface can be damp, but not wet with puddles, when applying DPS?

Depending on the porosity of the concrete an average coverage rate is 200 sq. ft. per gallon.

NO! Use as purchased, DO NOT DILUTE.

NO! DPS is an environmentally friendly, non-flammable, non-toxic waterproofing sealer, Green since 1918.

Volatile organic compounds (VOCs) are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects.

Apply DPS only to the areas that are showing signs of moisture. This application there is no need wait the 20 minutes. Apply and watch for dry areas again, after 5 minutes make sure all DPS is off the surface if any color stains or topical coating to be applied over the concrete surface. Wait 24 hours and check again.

YES! The basement walls and slab must be made of concrete. Apply DPS to the basement walls first starting at the wall bottom and spraying upward to the top using light misting applications for 20 minutes or when the wall stops absorbing the DPS. Cover the basement floor with protective plastic around the walls during the walls application. Remove the plastic and then treat the basement slab.

NO! All the walls and the slab must be treated with DPS. Water will seek around your small treated area.

NO! The voids in CMU block are too large for DPS to fill in; also there is not enough alkali in CMU block and bricks activate the DPS.

YES & NO! DPS can seal cracks that are no wider than a piece of paper. DPS cannot seal structural cracks. We do have solution methods to seal larger and structural cracks using CRETO DPS.

Any Portland cement surface, positive or negative sides, above or below grade.

When the entire product has penetrated into the concrete and there is no shine to the concrete surface.

NO! If you feel that too much product got on plants or grass it can be rinsed off with water.

Outside temperatures must stay above 45° for 24 hours or more, so DPS can crystallize enough so its gel cannot be pushed to the surface during freezing temperatures.