SubSeal-40 Offers More Than Just a Quick Fix

By Yvette Cruz. 

Why you should use a prefabricated, self-adhering, self-sealing waterproofing membrane to protect your latest project. 

With climate conditions currently changing and becoming increasingly extreme, it’s becoming more difficult to stay on top of waterproofing maintenance. MFM Building Product’s SubSeal-40 is a self-adhering waterproofing membrane that protects buildings and homes from extreme weather.  

Unlike other materials, SubSeal-40 is, “A uniform thickness of rubberized adhesive asphalt laminated to a multiple layer of puncture-resistant, reinforced polyethylene providing an exceptional combination of strength and flexibility.” Due to the material used to create this unique layer, SubSeal-40 offers protection and endurance. Because it’s long lasting, the membrane won’t crack or dry out.  

SubSeal-40 adheres well to dry, clean layers including metals, wood and vinyl. It was designed to be multipurpose so it could be used for “sealing foundation walls, exterior walls, through-wall flashings, around doors and windows, underneath stucco, plaster and masonry, planters, pot shelves and as a flashing material.” It would be easier to list what it shouldn’t be used for.  

This unbelievable product is self-sealing around nails, screws and other types of fasteners. Because of this, it locks out water that would otherwise penetrate or wear against spray-on products. 

The waterproof adhesive even has a wide temperature range which allows contractors to install it in cold or hot weather. It is also very easy to shape as it can be cut with a sharp utility knife, granting flexibility to uneven applications. 

This is one of the simplest installations that MFM Building Products offers but it’s also one of the best resources available.