I moved into a house with some pretty nice blinds installed already, Hunter Douglas Duette (I think). The blind I'm looking at has 4 plastic brackets (these ones specifically) which are screwed directly into the top surface (horizontal, down-facing) of the window frame, using #6 x 1-1/2" screws (as shown on page 2 of the manual here). The screw on the right-most bracket is no longer securely threaded at all, it has stripped out whatever it is screwed into and is providing no support. I don't know enough about construction to know if it was screwed into a stud or not (I can find a stud in a wall, but this area is trickier). I know windows are framed in wood, but I'm guessing this particular screw wasn't hitting wood, because when screwed in all the way and pulled on (soft enough not to slip a thread), you can watch the entire painted surface flex like a balloon, which makes me think I'm pulling on plaster or something soft. Wood threads is hard to strip, and wood would not flex.
Here is an image of the entire blind (sorry for poor quality). You can see the right edge sagging as I have removed the bracket. The textured/painted surface available for screwing into is 3" deep. The holes for the 4 brackets are just under 3/4" back from the front edge (see the exposed hole below).
One more look at the top surface from below (behind the blind), though this doesn't really offer much information.
Since I suspect the screw was not reaching wood, I'm not sure what to do.
- Reuse the same hole, with a longer screw? This would only help if there is some wood that was beyond the reach of the 1.5" screw, but I don't know.
- Reuse the same hole, with a #8 screw? I suspect this would be a temporary fix only and would eventually start pulling out like the #6 did.
- Move the bracket to the left a little bit and make a new hole? At least I'm not reusing the same bad hole, but this doesn't really solve the main issue, and it also makes things worse since I'm moving the bracket further from the pull string (the stress from which is what caused this bracket screw to fail before the other 3, I imagine).
- Use some sort of drywall insert? Again, I don't actually know what's under the texture/paint here. I'm guessing it's more substantial than just drywall, since the other 3 screws are holding. What else could be there? Sheet metal of some sort? I have no clue.
- Move the brackets back further? Maybe that is a way to find the window frame, but now the blind won't be aligned with the wall anymore, but rather recessed.
Open to ideas! I will probably start by trying the longer screw in the same hole, since I don't think that could make anything worse.