Hey Guest!
For a loft, have a 4X4 trap and put an electric hoist on reinforced trusses and lift parts up. Just make sure loft floor is set for weight.
This is the one I use (or very similar to it).We called the lift device a rope falls, probably incorrectly. Here's one similar from Granger.
https://www.grainger.com/product/4R...4RU48&ef_id=VEMcWwAABVzKTCe1:20150624154630:s
https://www.harborfreight.com/general-purpose-rope-hoist-60544.html
But I did manage to way overload my loft.