An insulation material has a thermal resistance rating of $R\text{-value } = 13\text{ h}\cdot\text{ft}^2\cdot{}^\circ\text{F}/\text{BTU}$. What is the equivalent thermal resistance in SI units ($\text{K}\cdot\text{m}^2/\text{W}$)? Given: $1\text{ foot} = 0.3048\text{ meters}$, $1\text{ BTU} \approx 1055.06\text{ Joules}$, $1\text{ watt} = 1\text{ Joule/second}$, and temperature intervals satisfy $1.8{}^\circ\text{F} = 1\text{ K}$.