12/27/2025
This is how I put soffit J-trim up - super easy. Snap a chalk line about 1/2” below the fascia level to account for the J trim thickness, then use my stapler to staple it up. You can use screws as well, but it you use staples, then make sure you set the depth properly. The staples must not even come close to piercing the trim or you’ll have problems later. This is also why I put in so many staples. The stapler is the Dewalt 20 volt narrow crown stapler (there’s a link in my bio - amazon favourites) and the tip on the nose of the stapler is from sidingtips.ca I use the tip because it’s narrower to get into the J-trim easier, and it doesn’t fall off. The stock tip falls off constantly as I used to buy replacements by the dozen. Also, they are made longer so that the staples don’t pierce the trim as the “loosest” setting on the stapler still pierces the metal sometimes since it’s so powerful. I also upgraded the end cap on the stapler with one from since I broke 4 stock ones within a 1.5 year period. The last time I posted about aluminum soffit, I was told that I’d lose all of my soffit in the next wind storm. Well, looking at many manufacturer’s soffit installation instructions, you do not need a wood backing strip nailed up, this is a valid method of installing. I live in a neighbourhood where I sided over 50 homes 18 years ago and I drive by many of those houses daily - guess what? We’ve had many 80 mph wind storms and all the soffit is still on there securely. And for those who say I’m a hack for not 45ing my soffit corners, the side is 12” overhang and this back is 18” - if mitred the lines won’t line up. After fire codes came into effect a few years back, I had to stop 45ing my corners due to the vented/plain soffit transitions. I hope this video is of value to you. Thanks for watching and let me know if you have any questions. . . . . . . . . . . . . . .