I’d like to mention a neat product called prepLESS by Global Encasement, an encasement product for covering lead and asbestos. PrepLess was designed to “encapsulate”  lead and asbestos, and it sticks, holds, breathes and stretches, making it a very tenacious and durable coating (according to the manufacturer). We first applied it to a badly weathered (chalky, crackled, peeling) stucco exterior, and later tried it on trashed T111 siding. In both cases, the adhesion and build was phenomenal. My only concern is that it may be too flexible to go under conventional coatings, but so far, so good. Now for the description:

The Original PREPLESS PRIMER™

“PrepLess” was designed and engineered to meet the needs of the hazardous materials abatement industry.  PrepLess in liquid form is a milky white color that when applied dries clear yet remains tacky to the touch.  It is known as a bridging encapsulant for abatement of asbestos containing materials and lead based paint. PrepLess penetrates and softens deteriorating lead based paint. It’s tremendous adhesion properties can help to reattach loose and flaking paint back onto the substrate, which reduces or eliminates the generation of hazardous waste associated with hazardous materials. PrepLess is a waterproof yet breathable coating with superior water vapor transmission and does not allow water to be trapped under the surface of the coating which is a common reason for coatings to crack and fail.  With 4000% elongation PrepLess expands and contracts with substrate movement caused by the rise and fall in climate temperatures and seismic vibration.  PrepLess contains no VOC’s or ODS’s making it a super-compliant architectural green coating.

Global Encasement has an array of great products including roofing coats, rust encapsulants, and lead/asbestos abatement products.