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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Coprox Waterproof Cement Additive (Prices from)Prevents Rising, Falling & Penetrating Damp Additive to Mortar, Screed, Unreinforced Concrete and Plaster Remedy for Leaks Coprox Waterproof Cement Additive is an excellent primary waterproofing when mixed with mortar, screed, unreinforced concrete or plaster. It is an essential ingredient in the construction of structural, retaining and boundary walls, floors, showers, basements, wine cellars, underground parking, ponds, swimming pools, reservoirs
- Prevents Rising, Falling & Penetrating Damp
- Additive to Mortar, Screed, Unreinforced Concrete and Plaster
- Remedy for Leaks
Coprox Waterproof Cement Additive is an excellent primary waterproofing when mixed with mortar, screed, unreinforced concrete or plaster.
It is an essential ingredient in the construction of structural, retaining and boundary walls, floors, showers, basements, wine cellars, underground parking, ponds, swimming pools, reservoirs and water features for the prevention of rising, falling and penetrating damp.
Coprox Waterproof Cement Additive is also an excellent remedy for the plugging of leaks.
Primary Waterproofing
- Add 2,5 kg Coprox Waterproof Cement Additive to every 50 kg of cement used in any mortar, screed, concrete or plaster mix.
- Ensure recognized building mix ratios are adhered to.
- Mix dry ingredients thoroughly.
- Add required quantity of water to the dry mixture using recognized building mix standards.
- Mix wet ingredients thoroughly before use.
Plugging Leaks
- Dovetail the leaking spot with a chisel to a depth of about 50 mm and clean thoroughly.
- Mix one part Coprox Waterproof Cement Additive with two parts of clean fine plaster or silica sand by volume, e.g. 1 cup Coprox Waterproof Cement Additive to 2 cups sand. Add a little water and mix until a putty like consistency is achieved.
- Wear protective gloves and knead well for about half-a-minute.
- Relieve the main water flow by inserting a piece of hose into the dovetailed cavity.
- Pack the plugging mixture firmly around the hose to keep it in place.
- Level the plugging mixture with the surrounding surface.
- Allow to dry for approximately 1 hour.
- Mix a fresh quantity of plugging mixture.
- Have a dowel stick approximately the same diameter as the hose ready for use.
- Carefully remove the hose using a twisting motion.
- Force the plugging mixture into the hole and apply pressure with the dowel stick for about 1 – 2 minutes.
- Remove the dowel stick.
- Fill the remaining void with the plugging mixture.
- Allow to dry for approximately 2 hours.
- Apply two coats of Coprox Masonry Waterproofing.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
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Product Reviews
★★★★★ 1
Arrived used for the second time.
Size: 10 Little Kid, Color: Rose Glitter W/Strap
I love Melissa sandals. The product is good, but it arrived used for the second time. It is poor store management.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Super cute
Size: 7 Toddler, Color: Glitter Clear/Pink
Looks cute and smells good.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Love these shoes!
Size: 9 Little Kid, Color: Rose Glitter W/Strap
My daughter loves these shoes! So comfy & easy to put on! They are even cuter in person!
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Reviewed in the United States on August 25, 2025
★★★★★ 5
Run small size up
Size: 10 Little Kid, Color: Rose Glitter W/Strap
Mini Melissa’s are my go to flats for my toddler they are so cute and flexible perfectly comfortable for her little feet.
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Reviewed in the United States on June 26, 2025
★★★★★ 1
Used shoes
Size: 10 Little Kid, Color: Glitter Clear W/Strap, Size: 10 Little Kid, Color: Glitter Clear W/Strap
If I could give this zero stars, I absolutely would. I ordered these shoes expecting them to be brand new since I paid full price and never selected any “used” option. What I received instead were clearly heavily worn shoes there were visible signs of use that you simply wouldn’t expect from a new product.
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Reviewed in the United States on March 25, 2026