Another reason people choose to render their homes is to deal with water ingress and penetrating damp issues. Some forms of brick, especially in exposed areas, can be liable to damp if exposed to the elements over a prolonged period of time. Water gets through the solid brick wall and into the house, causing a host of problems in the home. Adding a layer of render to the outside wall of the home blocks the path of water into the property and prevents this form of damp from occurring. Of course, this is only really the case on older solid brick properties. If you have a cavity wall, you shouldn’t be getting penetrating damp like this. If your render is old and tired, or perhaps cracked, it might be necessary to re-render.