ive just had my loft insulated and want to board it out i had a look at b and q and they have packs of boards 3 for under £5 but they are only 32cms wide so i think it would take a lot of boards. when the guy came who was doing the insulating he said if i want boards in the loft i cant screw them down i just have to lie them on top as the ceilings could pop due to the compression. i have a lot of stuff to keep in the loft so need the space for storage. the loft hatch is old type and only 21 inches wide so i was thinking would it be possible to make the loft hatch bigger and fit a ladder aswell. is the guy telling the truth that boards cant be screwed down or is there another way of boarding out my loft. any advice would be helpful thanks