Got my 48 foot living room finished today. I'll try to get a few images. Crappy camera, crappy images.
Hardest part was all the angles. The first image is some 4x4 supports set in place so that I could set up a temporary wall to stretch from. No way can you stretch off a 45 degree wall.
I cut the seams and thermo sealed them, then pre-stretched both sides of this long seam. It's about 42 feet long.
I made one side of the seam straight using a string, then made the second side conform to it.
Every effort stretching one way or another required setting up wall supports like the one in the first image and reversing the stretcher setup to go the opposite direction. No way can you stretch a long room like this, stretching it in just two directions.
From start to finish I probably set up my stretcher and moved the temporary wall supports dozens of times. 4 hours for me and my brother today just stretching the room from end to end................ we had already stretched it width wise the day before after putting the seam together and stretching one side of the length along the fireplace.