4/4/2024 0 Comments Concrete block walls![]() Cut down on the number of shelf angles to save money and simplify your construction. Shelf angles may not be required for veneer support at every floor line.Don’t forget to detail expansion jointsin the brick veneer and control joints in the concrete block backup. Brick veneer expands as it ages, whereas concrete block shrinks.It is penetrated only by thin 9-gauge wire ties to anchor the veneer. It is important to note that this rigid insulation is continuous. This raises the R-Value of the wall from 11.7 to 21.5. You can improve the R-value of this wall by substituting 3” foil-faced polyisocyanurate for 2” expanded polystyrene insulation in the cavity. ![]() The reason? If you use 1.5” insulation, coupled with a 1” air gap (required by Code), the entire wall can fit on a standard 14” wide foundation if you cantilever the brick a modest 1/8” over the edge of the foundation. Our sample design uses 2” insulation in the cavity, but many designers choose to use 1” insulation.Place rigid-board insulation in the drainage cavity to maximize interior usable space, and take advantage of the huge thermal mass provided by the masonry backup system.Sustainablility / Green Building Design.Sustainable Concrete Masonry - Assuring a Healthy Future One Block at a Time.Regional material (where applicable) 2 pts.Energy efficiency, thermal comfort and energy analysis – up to 10 pts. ![]() Use either thicker insulation or more expensive polyisocyanurate to achieve a higher energy rating. Extruded polystyrene yields 5.0 R per inch (7.5 R for 1.5" or 10 R for 2"). Expanded polystyrene insulation is worth 4.0 R per inch (6.0 R for 1.5" or 8 R for 2"). Polyisocyanurate insulation gives you 8.0 R per inch (12.0 R for 1.5" or R16 for 2"). Note: The type of rigid insulation you install affects the wall’s insulating capacity (the R-value).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |