EBS have just published a very helpful article about a best practice approach to insulating timber suspended floors, although it should be mentioned that in practice this option can be difficult to implement. The potentially more invasive option of completely Infilling the floor should always be considered as it offers improved performance and removes many of the moisture risks associated with retaining the sub floor ventilation and may well be a better choice in the long run an all counts
Insulating Suspended Timber Floors
