Hychem Deckproof PU-1-SL — Single-component self-levelling polyurethane waterproofing membrane

Ensure all surfaces are structurally sound to manufacturer’s written directions. Surface must be free of dirt, dust, loose matter, oils, contaminates, curing compounds, chalky or flaking concrete, dusting, scaling, and spalling etc. Grind or high-pressure water blast and or make substrate good to a smooth monolithic surface to accept priming and membrane application.

Concrete must be a minimum strength of 25MPa and have cured a minimum of 28 days. All surfaces must be dry. Fill all holes, cracks, divots, voids and any imperfections with a proprietary cementitious External leveller free of gypsum to accept primer and membrane. Install leak control flanges around all pipe penetrations and drainage outlets in accordance with AS3740 & AS4654.

Prime surfaces with Deckproof primer applied at a rate of 6-10sqm/litre dependent upon surface porosity and substrate condition. Damp areas and areas subject to rising damp use Deckproof WBE (water-based epoxy primer). Deckproof Primer & Deckproof WBE must be over-coated with Deckproof PU-1-SL membrane within a period of a 24hr window. Deckproof WBE or Decproof Primer must be completely cured through or dry prior to application of the membrane.

To the well-prepared surface, apply Deckproof PU-1-SL by notched squeegee, brush, roller or trowel in one or more coats at to achieve a minimum dry film thickness of 1.50mm. If this cannot be achieved in one or two coats an extra coat must be applied.

Where necessary apply the third coat within a maximum time frame of 24 hours to ensure good inter-coat bond. Use Deckproof PU-1-SL membrane for upturns and downturns including all penetrations and down into drainage outlets. When dry, check for pinholes or misses and rectify where necessary. If the Deckproof PU-1-SL membrane becomes dirty or contaminated between coats, clean with Solvent X to ensure adequate adhesion. Allow minimum of 24 hours for Deckproof PU-1-SL & Deckproof PU-1-V to completely dry before accepting cementitious toppings, tiling, paving, landscaping covering, protecting with coreflute or backfilling.

Generally, a 15 litre drum of Deckproof PU-1-SL will cover approx 10 – 12m² depending on the substrate and condition. Apply in one or two coats to achieve a minimum 1.50mm DFT. Ensure the dry film thickness (DFT) of the cured membrane is 1.50mm minimum.

Top Coating

For permanent UV resistance Deckproof PU-1-SL & Deckproof PU-1-V requires top coating with Deckproof PU-2-TC-1 Topcoat to ensure optimum performance and durability in exposed situations. Use topcoat coating as follows: Deckproof PU-2-TC-1 Topcoat for light foot and light maintenance trafficable situations. Over-coating should take place at the earliest opportunity once the membrane is fully cured to accept light foot traffic but Topcoat must be applied within a 24-hour window after installation of membrane. Should this not be possible it will be necessary to Solvent wipe membrane surface with Solvent X. Request technical support where necessary. For slip resistance particularly in wet conditions it is recommended to add Non-Slip Grit to the Topcoat along with an appropriate grit in the wear coat membrane e.g. washed clean 18/40 quartz/sand in the wear layer third coat membrane 500 microns. Consult with an independent slip Consultant to conduct Wet Pendulum testing for P & R Slip rating requirements and values.

NOTE: Where Slip Rating is required this should be tested on-site by a suitable qualified third-party independent testing authority (Consultant). It is the responsibility of the contractors, builder, engineer or asset owner to achieve the correct slip resistance as per AS 4586 – 2013 and the National Construction Code (NCC).

Deckproof PU-1 SL is supplied in 15 litre metal pails.

EDITION: DPSL10426 low viscosity self-levelling polyurethane membrane Deckproof PU-1 SL

• SMEATON GRANGE NSW 2567
• PH: 1300 HYCHEM hychem.com.au
• Page 3 | 3

Deckproof PU-1 SL can be stored on average for 6 – 8 months at 23ºC in a controlled warehouse environment stored on a pallet rack and shrink wrapped. Avoid prolonged application or exposure to high humidity or temperature above 35ºC or temperatures below 5ºC. Avoid contamination with water or alcohols. This product is very sensitive to ambient temperature, humidity and moisture. Once drum is opened, product should be used immediately and NOT be resealed for future use.

Field support where provided, does not constitute supervisory responsibility. Suggestions made by HYCHEM either verbally or in writing may be followed, modified or rejected by the owner, engineer or contractor since they and not HYCHEM are responsible for carrying out procedures appropriate to a specific application.

The technical information and application advice given in this publication is based on the best information available at the time of print.

As the information herein is of a general nature, no assumption can be made as to the suitability of the product for a particular use or application and no warranty as to its accuracy, reliability or completeness either expressed or implied is given other than those required by Commonwealth or State Legislation. The owner, his representative or the contractor is responsible for checking the suitability of products for their intended use.

• ⟦EDITION:⟧ DPSL10426 low viscosity self-levelling polyurethane membrane
• Deckproof PU-1 SL

Do not apply above 35ºC or below 5ºC ambient temperature. Do not cover until fully dry. Protect membrane against damage before and during backfilling or covering. Consult a Hychem representative for any technical assistance relating to correct membrane and topcoat application.

Keep away from heat and flame. Use only with adequate ventilation. Avoid contact with the eyes or skin, especially open breaks in the skin. In the event of skin contact, remove excess product and wash with warm soapy water. Refer to MSDS for important warnings and product information.