Insulation Additional Costs
If you choose to insulate the floor of your loft (instead of its ceiling), the temperature in the loft will decrease dramatically. A consequence of this is that water tanks and pipes which are placed in the loft will be susceptible to freezing. It will therefore be necessary to insulate these, which will add to the total installation cost.
If your home is affected by damp and you wish to install insulation, it is necessary to eradicate the damp before starting work. This may involve a substantial extra cost if you need to hire a contractor to do this.