tiling floor

Hi folks, So, we have just inherited our late mother-in-laws bungalow which needed modernising, especially the bathroom. Everything is stripped out and walls back to plaster. I have a couple of questions if I may, firstly i'll explain what we are trying to do - it's will be a rental. On a...

We are tiling our bathroom floor which has 70 year old floorboards exhibiting the usual wear, tear and irregularities. There is also a slight bow to the floor, albeit only noticeable with a long, straight edge. Replacing them with chipboard is not really viable because two of the original walls...