I am about to build an entrance staircase as the previous one was worn out and had to be torn down. At the top, I'm thinking of a simple platform made of 45*170. The platform should be 151*136 cm, so quite small. I plan to build the staircase down the side the same as the old one and reuse the railings. I thought I could support with two footings at the far end and post up the platform. It will be 1.5 m from the ground. Against the wall, I thought of fastening the ledger to the facade and trimming the cladding, using the house's floor joists for attachment with heavy screws.
But I became a bit concerned with the ledger against the wall that it could lead to moisture problems due to rainwater. Should I reconsider? Since it will be so high, it would be good for stability to attach to the wall, I thought. There is a small roof above, but water splashes will likely reach there when it rains.
I certainly don't want to risk moisture damage to the panel (which is to be repainted due to extremely neglected care), so tips are gladly received!
No rule against the panel as you say, there will be trouble in between and the panel won't do well. Two posts along the foundation that the landing is on and built up to the height of the door. Then there is something to attach the stairs to, as well as two nail angles, one on each side against the panel. Then it won't go anywhere.
Ok! I'll have to dig two more holes then . Should I anchor it in the door frame with nails? I was thinking about using some sturdy French screws with a little distance to the panel, but maybe it's enough as you suggest.
How far out should the ledger be from the wall? 5-10 cm?
It is enough with 5 cm from the panel and then there are angled nail plates that are sufficient, use anchor screws instead of nails as the panel might crack. It doesn't require much force to hold it in place. Attaching it to the door frame might be difficult; the landing should be just below the threshold, and the railing's top rail can be attached to the panel with a spike angle under it. Just ensure to make it sturdy with the fence posts so it doesn't wobble. It's best when the fence posts are in the concrete foundation, but can be secured with carriage bolts in the construction. No nails there, wood gives a little, allowing you to tighten the bolts slightly later.
One more thing, if you place two slightly shorter posts at the end of the stairs and attach the stringers to them, the stairs will be stable and won't move at the bottom, becoming rigid as a staircase should be.
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. Should I anchor it in the door frame with nails? I was thinking about using some sturdy French screws with a little distance to the panel, but maybe it's enough as you suggest.