SAKRETE Parging Mix is the best choice for this repair. More information is at
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SAKRETE Parging Mix is a pre-blended, ready-to-use, cement mixture with superior bonding, specifically designed for finishing concrete blocks or poured concrete walls, above and below grade. Use to level imperfections up to 10 mm (3/8 inch) deep. Just add water and apply with a trowel. FEATURES & BENEFITS • Easy troweling and smooth finishing • Superior bonding • Use above and below grade USES For parging smooth and leveling imperfections on concrete blocks or poured concrete walls, above and below grade. Use to level imperfections up to 10 mm (3/8 inch) deep. It may also be used on painted concrete and wood surfaces (see Surface Preparation 2 below). PROCEDURES Mix and substrate temperatures should be maintained between 5 ºC (40 ºF) and 30 ºC (86 ºF) for at least 24 hours prior to and 48 hours after. Mixing: Empty contents of bag into mixing container. Add approximately 4.0 L (4.25 qts) of clean water per 25 KG (55 lb) bag or enough to achieve a workable mix. Avoid a soupy mix. Excess water reduces strength and durability and can cause cracking. In cold weather, use warm water to accelerate the set. In hot weather, use cold water to slow the set. Surface Preparation: Surfaces to be repaired must be structurally sound and clean. Remove all delaminated or unsound concrete by chipping with a hammer and chisel or using a stiff wire brush. Clean the area to be repaired with potable water, leaving the concrete saturated but free of standing water. Some very porous concretes may require several applications of water to ensure complete saturation. Placing: Application to clean, sound, concrete blocks and poured concrete, proceed to Surface Preparation 1. Application to loose, unsound or painted concrete and wood surfaces, proceed to Surface Preparation 2. Surface Preparation 1: Application to clean, sound, concrete blocks and poured concrete. Thoroughly saturate the area to be parged and remove any free standing water. Some very porous concrete may require several applications of water to ensure complete saturation. After mixing apply SAKRETE Parging Mix, by trowel, to a damp surface not exceeding 10 mm (3/8 inch) in thickness. If a greater thickness is required, rough-up surface with a coarse broom and allow to harden for 24 hours before repeating process. Surface Preparation 2: Application to loose, unsound or painted concrete and wood surfaces. Mechanically fasten galvanized diamond wire mesh to surface. Wood surfaces require 6.8 KG (15 lb) of asphalt-impregnated building paper under mesh. Dampen exposed concrete. After mixing, apply initial layer of SAKRETE Parging Mix, by trowel, level with mesh surface. Rough-up surface with a coarse broom and allow to harden for 24 hours. Then, thoroughly saturate the area with clean water and apply a finishing layer to a damp surface not exceeding 10 mm (3/8 inch) in thickness. Finishing: It is recommended to use a wood, magnesium or aluminum float trowel for a smooth surface. For a textured surface, use a broom or brush. CURING Curing means maintaining proper moisture and temperature. Allow newly placed material to set until surface is hard to the touch. Then keep material damp or cover with plastic to prevent evapouration of mix water for at least three (3) days. Protect from freezing for at least 24 hours. TECHNICAL DATA Initial Set: Approximately 6 hours Compressive Strength: 7 Day 8.5 MPa (1200 psi) 28 Day 12.5 MPa (1810 psi)
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Date published: 2018-08-02