Planning to install a Hörmann overhead door with a motor, and I'm considering the ceiling mounting. I have a single layer of drywall and behind it, 28x70 sparse paneling at cc30.
Is it safe to use Molly bolts or should I use wooden pieces fastened to the sparse paneling where the mounts end up in the middle of the drywall?
Was about to install the gate yesterday, checked to see if everything was level. Found that the floor slopes quite a bit, differs by 18 mm from left to right side. So we held off on the installation. How critical is it really?? Now there's a rather soft strip that goes against the floor, but can it compensate that much?
The thing is, the slab was newly cast about 2 years ago, I hired a builder specifically to get the slope and such right. Is it worth calling and asking if they can come and fix it?
Of course, you should attach to the glesen or preferably the roof trusses as KOW said. The mounts can reasonably be adjusted to fit. 18mm over about 2.5m is a lot. It should be level, otherwise the door won't seal. Can it be sanded down or is there an edge iron?
I have now been in contact with the builder who poured the slab, and I have pointed out that they need to come and fix it. He has mentioned some solutions that don't quite feel right, such as cutting a bit in one of the wall tracks. He did say that you can't just spackle it because it won't hold up against the combination of cold and driving over it with a car.
But how far can you stand your ground on such an issue? I want it to be straight; it might still work, but if I have paid for them to pour the slab, it's the least one can expect that it is straight, right??
I have thought of suggesting that they break out a part of the slab (halfway down) and some of the surrounding area, drill and fasten something like nails into the old slab, and then do an overlay that makes it straight and also creates a slope. Possibly even casting a pipe where the lowest door leaf meets the slab. Could that be a solution??
The alternative of just grinding it down seems like there might be a risk of having problems with reverse slope and/or water accumulation nearest the door, right??
Absolutely do not cut into the wall rails.
Do you have an angle iron on the front edge of the cast sole?
When properly mounted, the strip is not compressed too much on a Hörmann, so the front edge should be level where the strip meets the concrete.
And as mentioned, 18mm is too much!
Can upload a picture later today. Yes, there is an angle iron but it's in line with the outside of the wall, and the gate will be mounted so that it is on the inside of the wall, so to speak. Yes, it seems like it would be silly to start cutting into the wall rails. But now I'm thinking of saying that they need to come and fix it without me having to pay for it. You should be able to say that, right? I can also mention that I told those who were pouring that I would mount a sectional door on the inside of the exterior walls, feels like they should have kept that in mind and ensured it was straight. Sure, everyone can make mistakes, it happens, but then they should come and fix it without fuss. I usually try to have a normal conversation but I will speak up if necessary, I don't like to argue but if you must, you must...
So, the gate is now in place. The construction company came and sanded down so the gate could be mounted. It wasn't particularly difficult to install it yourself as long as you take it easy and are careful. Now what's left is to cut off the last panel and clad the opening as well as some lighting, but that will have to wait until summer. Some pictures
When the gate is in the raised position, is it completely above the gate opening? Or does it hang down from the gate opening, and if so, how much does it hang down?
Could you take a picture of it so that it is clearly shown?
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