> R-Value Wall Area Calculator
Use this calculator to work out for a wall or ceiling how much heat is being lost through it. Useful to help you in working out how much heating or insulation you need.
To get best benefit from this calculator you need to do the following:
- Work out the dimensions and R-Value for the wall construction itself.
- Then if required work out the dimensions and R-Value for the inset (usually a window) in the wall
- Enter the total wall dimensions and R-Value into the calculator above, then enter the dimensions and R-Value for the inset
- Note the total R-Value and the energy loss figures.
Remember, the values calculated here should be taken as a rough guide, it does not take into account other effects (like draughts and heat or cooling sources) in the room.
Reset & do another calculation.
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