Moisture movement , especially in porous walls. has to be taken into account when planning your internal wall insulation upgrade. Adding insulation to the inside of a solid wall reduces heat loss and has an effect on its natural ability to dry. The diagrams below show how adding Internal Wall Insulation effects moisture movement in walls.
Based on the type of wall you have you need to decide what system best suits your wall type. We have three options: Vapour Open; Vapour Closed; or Vapour Closed with Reverse Diffusion Membrane. We can advise you to ensure you make the right decision. The illustrations below show the differences between VO, VC and VCRD Solutions. Our Enviroform Master Product Matrix can help you match the product you need to your wall type.