Foundation Sill Anchor Bolts

By Robert Robillard on Uncategorized

Retrofitting Mud Sill Foundation Anchors

Quick, easy and alternative solution for retrofitting or installing cast in place  mudsill anchors

Dear Concord Carpenter,

I am building a woodworking shop outbuilding in my yard and screwed up the spacings of my mudsill ½” anchor J-bolts.

Several are misplaced, too shallow or angled to far and I also need to add a few additional bolts to pass code.   Hindsight is 20/20 and I wish I had the proper information before I did this.

What are my options?

Thanks, Allen P.  Newark, NJ


Dear Allen,

Misplaced and improper depth of mudsill j bolts is not uncommon and luckily you have several options.   Once your sure your mudsill is properly in place and square you can drill through the mudsill and concrete and install ½” ex

panding bolts with a washer and nut.

Another option which I feel is faster and a more efficient use of time is to install SIMPSON Titen HD Anchors.   I use the Titen HD anchors instead of cast in place mudsill anchor bolts, their way faster to install and save on labor costs.

My reasons for using the Titen HD anchor is that I can layout my sill plates after the pour and install my anchors all at once exactly where I want them and in the right locations.

The threads on the Titen HD Anchor are specially hardened cutting threads and cut into the masonry to secure  a mechanical lock and provide superior load resistance.

These fasteners come in zinc and galvanized finishes and  12, 13, 14 and 15 inch lengths and provide code compliance with SIMPSON hold down anchors.

To install the Titen HD anchors all you will need an SDS hammer drill to drill pilot holes, and compressed air to clean out the hole.  Lastly you will need an impact wrench or driver to drive the Titen anchors.

You should be able to get the Titen HD Anchors at your lumberyard.

Hope this helps!


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About the author

Robert Robillard

Carpenter / Remodeler / Editor

Rob Robillard is “The Concord Carpenter” Rob is a builder, general contractor, carpenter, woodworker, and editor of Concord Carpenter and ToolBoxBuzz As a General Contractor and carpenter, Rob owns and operates Concord Carpenter LLC. A full-service remodeling and construction company. Rob is a recognized leader in home building best practices and a source for how-to information for building professionals. On this website, Rob covers all aspects of home construction, building science, home improvement, woodworking, remodeling, and some of the best product and tool reviews. Rob is in charge of our Tool and Product Review series - Concord Carpenter Videos where we post all of our tool reviews and video tutorials. Rob approaches remodeling and building construction with a pragmatic and problem-solving approach. He enjoys using his knowledge and experience to help and educate building professionals as well as DIYers on best practices in the construction and remodeling industry. He's a strong advocate for "raising the bar" in the construction trades and promoting the trades to youth. #BeAMentor #Green2Great Craftsmanship, quality, and pride guide his journey on this channel The Concord Carpenter's motto: "Well done is better than well said!" : Read more about Rob

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