1) Why was the FLOODSILL™ not invented before?
Answer, can't really answer that, perhaps just needed someone who saw the problem re-occurring all the time and found a solution for it once and for all!
2) How do you determine how much insulation to put in the foundation wall?
The type of material you use and the required R Value for your specific area determines the thickness of insulation.
In USA go to the department of Energy website and type in you location they will give you the required R value for both cavity wall and exterior sheathing insulation.
In Canada go to the CMHC Website and find your zone and go to the tables to find required insulation for below grade; Or at minimum use R12 for below grade walls (R20 if using electric heat).
Go to the Architectural Details and select a wall type with either rigid or batt insulation or a combination of both.
3) What does R Value stand for?
Go to glossary for definition.
4) Can I use a wood 2 x 4 on top of the FLOODSILL™?
The answer is Yes you could, it serves no purpose. By using a 3 ½" steel track as the top and bottom plate, construction is so much faster and easier. These are non-loading partitions and do not require a 2 x 4 upper and bottom plate like construction detail above grade.
5) Can I glue the FLOODSILL™ to the floor?
The answer is No, do not glue the FLOODSILL™ to the floor. The FLOODSILL™ was designed to allow water to flow underneath. The glue will restrict the flow of water. The suggested method is to fasten the 3 ½" metal track and the FLOODSILL™ he with 3" Tapcon Screws @ 24" centers.