Our Radiant heat floors have cracks in the lightweight cement. Can you recommend a product that we can fill the cracks with prior to painting? We believe that it needs to be flexible as with the heating and cooling most products continue to crack. (This has happened on some of the floors we have already painted.)
Your description is very good! We think Joint Tite 750 will suit your purpose. Joint Tite is a very thin liquid or low viscosity liquid joint and crack filler. Joint Tite is a new product in the crack filling industry. Joint Tite is a polyurea and has phenomenal adhesive and cohesive properties. Thank you for your question.