The OCM Bentoswell Primer is an amazing trowel - grade sodium bentonite - butyl rubber sealant made for waterproofing below - grade concrete. When it touches water, it swells up to form a super - tight water - proof seal. It's also a great detail accessory to use with other waterproofing products.
Key Features:
- Easy application without the need for primer or surface prep.
- Bonds well to various substrates like concrete, masonry, wood, and metal.
- Expands on contact with water for a reliable water - tight seal.
- Perfect for flashing around drains, penetrations, terminations, inside corners, and uneven surfaces.
Specifications:
- Color: Black
- Weight per Gallon: 10.5 lbs
- Solids Content: 80%
- Sag Resistance: No Sag
- VOC Content: 240 g/L
- Unrestricted Swell: 200%
Application Instructions: Make sure the surfaces are clean and dry before applying. Apply when the temperature is above 25°F and condition the material to at least 40°F before use. Apply it with a minimum thickness of 1/4".
Storage and Shelf Life: Store between 40 - 110°F (4 - 43°C). If stored as recommended, it lasts for 12 months.

Hey there! Using the Bentoswell Trowel - Grade Waterproofing Sealant is quite straightforward. First, make sure the surfaces you want to seal are clean and dry. The temperature should be above 25°F when you apply it, and you need to get the material to at least 40°F before use. Apply it with a minimum thickness of 1/4".
When it comes to storage, keep it between 40 - 110°F (4 - 43°C). If you do this, it'll last for 12 months. This sealant bonds well to many materials like concrete, masonry, wood, and metal, so you don't have to worry much about the substrate. It's also great for tricky areas around drains, penetrations, and corners.
Just remember, if it gets wet, it'll swell up to create a tight water - proof seal. So, be careful during application and make sure you use it as directed. That way, you'll get the best results and a long - lasting waterproofing solution.