Have tried to fit shelving into hot water tank cupboard. Have been able to secure wood to one side of cupboard but the outside wall has material behind it that won't take to the screws. Unsure what this is as detector not picking up metal/electrics.
Looking for someone more experienced who can fit shelving for me and/or provide an answer?!
Use something like pink grip or no more nails to fix a wooden batten to difficult wall the attache shelves to batten.
Failing that use upright battens from floor to shelf use right angle brackets to secure batten to shelf (making legs for shelf)