I'm in the process of retrofitting my single-family home to better withstand severe weather events like hurricanes and tornadoes. After studying some FEMA reports, I've drafted plans which include using various Simpson Strong-Tie components and structural screws in the attic, walls, and crawl space. Specifically, I'm using hurricane clips, structural screws for both wall and ceiling joists, and several attachment methods for both the top and bottom plates. Has anyone here done similar work or have insights on effective retrofitting techniques? I'd love to hear any tips or experiences you might have!
2 Answers
It sounds like you're on the right track with the retrofit! Just a suggestion: when you install those hurricane clips, use longer structural screws that can go through the top plates into the studs for extra security. It's crucial to ensure that all your connections are secure since high winds can create a lot of uplift pressure that might compromise your roof. Some people find that using H2.5 or H3 clips might be a better fit than the H1As you mentioned. Make sure to check if the FEMA guidelines call for connecting ceiling joists as well; sometimes that's overlooked but can be an important part of the structure.
I feel you on this! My older home doesn't have the bolts or straps that modern construction does. I've been looking at anchors from Simpson Strong-Tie that could help retrofitting. Specifically, I'm considering their URFP plate with Titen HD screws to secure things down properly to the foundation. It’s a bit tricky with old homes, but definitely worth upgrading for safety during storms.
Thanks for the tips! I’ll definitely look into longer screws for extra support. I appreciate your insight on the clips, too—I'll research the H2.5 and H3 options!