Building My Net Zero Energy Home: Budgeting for Extra Subslab Insulation

Reader Contribution by Staff
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Workers here are finishing the footing forms and pouring concrete. One of the things you will have to take into account when building a net zero energy home — and preparing your budget — is that super-insulating the slab will require your excavator to dig a much deeper hole to accommodate the five inches of insulation. This will cost more for the obvious reason: more time spent on the job. You can also encounter bedrock. We encountered bedrock that had to be removed by special equipment, adding to the cost. Keep this in mind when determining your budget. Budget for the unexpected.


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