This tool solves the “Cold Floor” problem. It compares the three most common skirting methods—Rigid Foam, Hay Bales, and Vinyl Kits—calculating not just the material cost for your specific perimeter, but also the “Warmth Factor” (R-Value) and “Rodent Risk”.
It includes an interactive “Wind Chill Simulator” that visualizes how skirting stops the wind from stripping heat away from your floor plumbing.
Winter Skirting Calculator
Foam vs. Hay vs. Vinyl: Stop frozen pipes.
1. Trailer Dimensions
Measure from ground to bottom of frame.
Cost & Performance Comparison
Based on 0 linear feet.
| Material | Est. Cost | R-Value | Risk Factor |
|---|---|---|---|
| 2″ Rigid Foam (XPS) | $0 | R-10 | Best overall |
| Straw/Hay Bales | $0 | R-30 | High Rodent Risk |
| Vinyl Skirting Kit | $0 | R-1 | Wind break only |
The “Hay Bale” Myth
While hay has incredible insulation value (R-30+), it is a magnet for mice looking for a warm winter home. Once they nest in the hay, they eventually chew through your tiny house underbelly. Plus, when hay gets wet, it rots and molds against your frame.
The goal of skirting isn’t just to insulate the floor; it’s to trap the earth’s natural heat (roughly 55°F) under your house. By stopping the wind with Rigid Foam, you create a conditioned crawlspace that keeps pipes liquid even in sub-zero air temps.