Not worried about weight. The model layout shall be very light weight (constructed with weight in mind and scenic made mostly from polystyrene or chicken wire covered with plaster bandage) and would be nothing compared to what was once up there - the loft is empty now. Floor is well supported...
Hi All,
I have a mid 70s house with a good sized loft with enough head room for me to construct a model railway up there with my son. The loft was boarded out with chipboard flooring above rockwool insulation between joists by the previous owner who built the house himself (a builder by trade)...