We have built an attached greenhouse, and wish to use a pocket door to connect to the house. Looking for ideas/recommendations for sealing door. Greenhouse will be heated to some extent, but not necessarily to interior temperature at all times. We’re in Nova Scotia.
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Probably the simplest approach to this would be to get a sliding glass "deck" door (possibly one damaged in transit, with broken glass) and use the tracks and sealing mechanism from that, boxing in the fixed side of the door, and replacing the movable door with your own. You'd want some way to open the wall on occasion to clean the concealed part of the lower track.
I can imagine some sort of track mechanism that would cause the door to shift during the last few inches of travel, so that it would tightly fit into the door opening. Kind of like the sliding door on a van. You may be able to find something along the lines of this in industrial doors.
Last time I was in Norway (about 15 years ago) they had some really neat doors they used on the ocean side of some houses. They sealed almost like submarine hatches. But I don't know where you'd get these in the US, and I don't know if there's a version of this that could be adapted to sliding.
Dan's patio door idea is pretty good. I guess the good old patio door is the original exterior pocket. I think the submarine doors he's talking about are a multi-catch style exterior. I believe a company called Eurobuilt in Dartmouth NS has something like that.
If you want a seasonal door that uses less space, another option might be a roll up or a garage style door like some entrances to restaurant patios. I did a Google search on 'exterior roll up doors' and found a few but you could probably find something locally in Halifax.