Bostik Renderer’s Stabilising Primer is suitable for outdoor use on both porous and non-porous areas to give a surface that dries evenly giving excellent adhesion and a faster, easier finish. Bostik Renderer’s Stabilising Primer has been developed for preparing exterior walls prior to applying render. It can be applied over brick, blocks, concrete, plaster and render. When rendering externally it removes the need for initial scratch coats, only receiving render is required. Bostik Renderer’s Stabilising Primer can be used on internal shiny surfaces such as sound glazed tiles before plastering.