I bought a set of Kömmerling PVC windows and doors including a tilt and slide door. We are having a problem with the vendor in that they won't install it but won't give us information on how to install it. If we want to find out how to do it, is knowing that the profile is Kömmerling enough, or would the installation instructions depend on exactly what brands and models of hardware the vendor chose to assemble with the profile?
How do we go about finding out how to install this door? What information about the door would someone need in order to answer that question? We live in a remote area where there are no other people qualified to install this door without instruction. The vendor told us at first that the windows and doors could be installed by any builder with experience installing aluminium windows, then when that turned out not to be true told us that the tilt and turn door installation was too complicated to explain and he would do it himself, then didn't do it. Maybe he will come through but I will feel safer knowing that it might be possible to do it myself or with a normally skilled builder.