How-to do an Uncommon ICF Angle on Site
Written By: Colin Showalter
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The Advantage ICF system has two typical corner blocks – 90 degree and 45 degree. So what do you do when your project calls for a 35 degree or a 120 degree angle? Well, let me explain.
The answer is simple. A simple miter joint can be created by bevel cutting standard straight blocks to accommodate any angle on site.
Step 1: Start from a corner block (45 or 90 degree) and work towards the uncommon corner requiring a miter joint.
Step 2: Bevel cut the foam on the edge of two standard straight blocks at the angle required to match the angle of the to create the uncommon miter joint.
Step 3: Place pre-bent rebar going throughout the corner to match the rebar pattern.
Repeat steps 2 and 3 for all sequential rows of ICF block.
Step 4: Spray foam the gap if you feel the miter joint doesn’t fit tight. Use a low expansion spray foam.
Step 5: Strap the corner with Advantage multi-strap the same as you would with all the other corners.
Step 6: Build 2-2×6 lumber “L’s” or “strong backs” place these vertically on the back side of the miter jointed corner fastening them to the Advantage ICF ties.
Note: you may save time if you have multiple miter corners by building a miter box
Following these steps will allow you to build a monolithic concrete wall throughout any uncommon angle in your project. Be sure to continue to follow all local building codes.
Coming soon: When do you need a taper top block?