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UGL Oil Drylok Masonry Waterproofer
UGL Oil Drylok Masonry Waterproofer
UGL Oil Drylok Masonry Waterproofer

Formulated for waterproofing all interior, exterior, above or below grade masonry walls, cinder and concrete blocks, stucco, brick, retaining walls, basements, concrete swimming pools and foundations. No pre-mixing or pre-wetting necessary. * A masonry Waterproofing paint * Ready-mixed - tintable * Use indoors and out, above or below grade * Contains synthetic rubber and Portland cement * Apply straight from the can - no pre-mixing or pre-wetting * 10-Year Warranty * Performance conforms to Fed. Spec. TT-P-1411-A * Withstands 10 pounds of hydrostatic pressure per square inch, greater than a wall of water 22 feet high

*Please note that this product is restricted and cannot be shipped to the following States: AK, CA, CT, DC, DE, HI, IL, IN, MA, MD, ME, NH, NJ, NY, OH, PA, RI, VA.  Please CLICK HERE for the comparable product that can be shipped into your State.

Item# Item Name List Price Our Price Qty Add
20813-G UGL Oil Drylok Masonry Waterproofer Gray Gallon
20713-G UGL Oil Drylok Masonry Waterproofer White Gallon
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  • Drylok Oil Base Color Chart

Technical Specs:

Extended Information:
Step 1:
Prepare The Surface.
As with any painting project, surface preparation is the most important step. Before applying DRYLOK® Masonry Waterproofer, clean the surface thoroughly with a wire brush to remove all loose and broken mortar, dirt, dust, efflorescence (salt-deposits) from all surfaces to be painted.
Old paint must be removed by wire-brushing, sand-blasting or by using other suitable means. DRYLOK® Masonry Waterproofer is warranteed over bare masonry only.
WARNING! If you scrape, sand or remove old paint, you may release lead dust. LEAD IS TOXIC. Contact the National Lead Information Hotline at 1-800-424-LEAD or log on to www.epa.gov/lead.
The worst enemy to any masonry waterproofing paint is efflorescence. This white, powdery deposit is formed when naturally occurring water-soluble salt compounds, that are present in the masonry, are drawn to the surface by water seepage. These deposits prevent the masonry waterproofing paint from adhering to the surface of the wall.
To control this problem, treat efflorescence by washing with a solution of DRYLOK® Etch or muriatic acid according to manufacturer’s directions. Rinse the treated area thoroughly and allow to dry. Since efflorescence occurs naturally, we cannot warrant against recurring efflorescence.
If efflorescence is not present, proceed to Step 2.

Step 2:
Patch Cracks And Holes.
Fill all holes and cracks with DRYLOK® Fast Plug®. Back chisel out the area to be patched to the shape of an inverted “V”. This allows the patch to lock into the surface. Wet down the area prior to patching to help the DRYLOK Fast Plug cure properly.
This fast-setting hydraulic cement patches holes even where water is actively flowing
through them. DRYLOK Fast Plug sets up rapidly.
Mix only enough patch to be used in 3 to 5 minutes.
Seal The Floor And Wall Joint.
An area that is often overlooked as a source of water seepage is the floor/wall joint. Normally, when concrete
floors cure, they shrink and pull away from the wall, allowing a space for water to enter. Clean the area and wet down with water prior to patching. Fill all gaps between floor and walls with DRYLOK Fast Plug.

Step 3:
Apply DRYLOK To Basement Walls.

Stir thoroughly before and during application. DRYLOK should be applied to clean, bare masonry. Apply DRYLOK Masonry Waterproofer when the air and surface temperatures are above 50°F. For best results wait for a rain free period. Apply the first coat with a stiff bristle brush working the DRYLOK thoroughly into the pores of the masonry. After using the first gallon of DRYLOK measure the area covered. It should be about 75 to 100 square feet. This thick bodied masonry paint is formulated to provide a waterproof barrier and is not intended to be spread thin like regular wall paint. Two coats are required to assure warranted waterproofing. Allow the DRYLOK to dry according to manufacturer’s directions between coats. The second coat can be applied by brush or masonry roller.

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United Gilsonite (UGL)