like this:?
https://www.fab-form.com/fastfootMp/fastfootMpOverview.php
Isn't that expensive
@TorontoBuilder ?
I looked into SIP panels thinking it would save me time and money. Time maybe but money no. for my garage addition they wanted $12K for walls and roof. I was surprised.
This system fast foot mono pour also looks expensive.
I'm looking at 2x6 walls with R20 batts and an external layer of R5-R10 rigid foam or maybe rigid fibreglass. I am estimating 4 or 5K for materials to do the basic framing and sheathing and insulating.
We must get away from speaking about the capital cost of a project alone, and look at the overall cost of ownership, appraised value and improved durability and comfort, as well as the "can't be screwed up factor"
That said, on a geometrically simple structure ICF walls typically add about $3-5 more per square foot, but in many cases the incremental costs can be reduced to nearly nothing. But you need to have a very good plan and know what you're doing.
In my case, I have brought the cost close to par on a number of occasions by using frost protected slab on grade foundations on a compacted base. There are very little to no excavation cost associated with this method, The compacted base cost is on par with the cost of preparing a base for a floor below grade.
Then the key is to reduce the labour cost to lay out and set up the foundations and the main walls, and then to maximize efficiency of concrete placement to minimize the hordes of ancillary costs associated with using concrete. Monopouring the exterior footings and wall in a single day with a one time conveyor truck charge and eliminating additional cement truck surcharges by allowing additional trucks to simply dump their load into the conveyor trucks hopper.
The fast-foot monopour system footing material only costs $150 per 100 foot roll. Pre-sewn footing corners are about 11 bucks each, and the leveling feet for 100' feet long wall is just over $400. So the total cost of material to form footings and level the ICF forms is less than $600. By pouring the wall and footing on the same day you save hundreds in delivery fees.
Foundation prep is two days. Main walls are installed in two days. Floor insulation and radiant loop layout two days. One day for crew to pour the floor. Ready for roofing in a week.