By Greg MacPherson | MacPherson Building LLC When you’re building a custom home, it’s easy to get excited about the kitchen, flooring, and exterior finishes. But some of the most important work happens before any of those materials are installed. The layers behind the siding help protect your home from water, reduce drafts, and control how much conditioned air escapes. That’s why I put so much importance on the building envelope—and why I like ZIP System sheathing, stretch ta

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