Storage buildings

How do I create a front porch? How are these storage buildings anchored?
Can I order a storage building without a roll-up door? Can I place a higher or wider roll-up door in the storage building? Can I place the storage building on a stem wall? What is Dripstop®? Can the roll-up door be moved to the side wall? Can the man door also be placed on the left? Can two storage buildings be permanently constructed beside each other? How is the storage building secured against intrusion? Is it possible to install solar panels on the roof of the storage building? Can I make a storage building with an entry gate? Do the storage buildings comply with the NEN 1087 ventilation standard? Can I place a window in a storage building? Can I paint the storage building? Can the storage building (partly) be constructed without sheet material? Are the storage buildings available in different colours? Do the storage buildings have gutters and drainpipes? Do you offer insulation? Do you have structural calculations available? Can the man door be placed on the left as well? What about rainwater drainage? I need a different length. Is that possible? Is it easy to install a roll-up door?
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