We hired Lindner to install a new front doorway (made by Mastertech with Verre Select glass) at our Waterloo home. The product wasn't cheap -- in fact, Lindner was almost twice as expensive as the next quote that we received -- but we believed that we were getting a superior product, and the owner's sales pitch was convincing.
The product itself -- the door, glass, archway -- is great. However, the good news stops there. The service was, to say the least, awful.
Lindner took my original door out and left the front entranceway unfinished for two weeks. After a nasty argument with the owner (in which he sweared at me), they finally came back and finished the installation. They put in the trim (unevenly at that), and left an electrical outlet and the suspended ceiling in my front doorway disassembled. When I asked them to reattach the ceiling in the porch and to reassemble the light fixture, they told me (in no short terms) that they wouldn't do it. The brickwork at the front was done very sloppily.
I ended up having to rewire the exterior light and put up the ceiling in the archway by myself. It was certainly not what my wife & I had agreed to; perhaps we should have recognized the 'caveat emptor' when the owner himself originally told us, "Don't worry, we'll take care of everything."
In short, I would NOT recommend this company to anyone. Whereas one might assume that completing a door installation involves fixing what you broke, our experience with Lindner was that he took the wording of his contract literally -- and since the contract didn't specifically state that he would reassemble the lighting & suspended ceiling in the porch, he didn't do it. I consider this fairly to be pretty unscrupulous.