Basement Waterproofing Services

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STEP 1: SURFACE PREPARATION 1. Stop all leaks and repair all concrete defects such as cracks, faulty construction joints, pipe penetrations and honeycombing using the following repair procedures: a. Repair Application Instruction 5.12 - Waterproofing Cracks, Holes & Joints b. Repair Application Instruction 5.21 - Patching and Parging Defective Concrete and Masonry c. Repair Application Instruction 5.32 - Waterproofing Pipe Penetrations Prepare the surface by high pressure water blasting (minimum 3,000 psi), scarifying, shot blasting or sandblasting. Concrete surfaces must be clean and free of paint, sealers, form release agents, dirt, laitance or any other contaminates. The concrete must be open-pore and absorptive such that water placed on the surface will soak in. NOTE: Acid etching is not recommended. If acid etching must be used, all traces of acid must neutralized and rinsed away before applying the Krystol T1. 2. Surfaces to receive Krystol T1 must be brought to a saturated-surface-dry (SSD) condition. The concrete must be completely saturated with water, but all surface water must be removed before applying Krystol T1. Thoroughly soak the surface with water; then remove excess water with a sponge or vacuum just before applying Krystol T1. TIP: High pressure water blasting is effective at cleaning and saturating the concrete in one step.

STEP 2: MIXING Krystol T1 can be applied by a concrete brush, broom, texture sprayer or a grout pump/sprayer in either one or two coats. Mix ratios may slightly vary dependent on application method. Start by mixing approximately 3.5 parts of powder with 1 part clean water by volume and mix until smooth. Adjust as needed based on ambient temperatures to produce a thick, low-sag but spreadable coating. Krystol T1 will thicken in the pail when at rest. Stir as needed to maintain workability (do not add more water). Do not mix more material than can be applied in 20 minutes. IMPORTANT: Use only as much water as needed to allow you to spray or brush the product evenly. Using too much water will result in low build thickness and make the product weak. TIP: Krystol T1 will compact in the pail during shipping. Roll the sealed pail on its side to loosen the powder before opening the lid.


STEP 3: APPLICATION Ensure that Krystol T1 is only applied to saturated-surface-dry (SSD) surface. As you apply the coating, you may need to rewet the concrete ahead of you to maintain a SSD surface. Failure to bring the surface to an SSD condition will result in a weak bond between the Krystol T1 coating and the concrete, and may lead to dusting, flaking and delamination. 1. Brush or spray Krystol T1 evenly over the concrete at a rate of 1.2 – 1.6 kg/m2 (2.2 – 3 lb/yd2) which can be applied in one or two coats. IMPORTANT: Set pails out over the work area in advance to help determine and track coverage. 2. With a concrete brush, scrub and brush the coating to low spots and ensure a good bond. 3. Finish with a lighter pressure to level high spots to ensure a uniform build with no thin spots. 4. If using two coats it is preferable to apply the second coat within 48 hours after the first coat has set hard (usually 6-24 hours depending on temperature). Wash and rinse the hardened Krystol T1 to remove surface bloom before applying the second coat. This may expose some of the aggregate in the first coat. Ensure the hardened Krystol T1 is in an SSD condition.