Hardie Siding With Modern Metal Corner Trim

On a recent project, we tried something new: we laid up James Hardie lap siding and instead of using our standard corner trim detail, we had custom metal corners made for a slim, modern look.  Here are a few pics of the finished product.

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The siding slides into the pocket formed by the return on the trim

The siding slides into the pocket formed by the return on the trim

This was a simple change which added a lot to the finished product. I got this idea from a post Matt Risinger did on trimming windows with metal flashing, he was solving for a different problem there – but it looked simple enough so we gave it a shot.

We drew up a quick detail on the whiteboard, and Collin, our pm, ran down to m&m sheet metal and had them fabricate it out of 26 ga paint grip. After installing our rigid insulation and taping the seams, we nailed it up and taped the edge to prevent any water getting in behind the Hardie Siding from camping out behind the flashing.

This is the detail - simple stuff. I think the nailing flange was around 2”.

This is the detail - simple stuff. I think the nailing flange was around 2”.

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You can see one of the sides requires a flush cut along the edge, which we just caulk, and the opposite side of the corner pockets back behind a ½” return, which we didn’t worry about caulking.

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This was a simple, low-cost way to detail out this install.  No additional labor or material cost. The only downside: someone backed into one of the corners on a delivery and left a dent – it wasn’t exciting to think about tearing out the corner since one whole side of siding was laying over the flange. So we used a 2-part cold weld epoxy to smooth out the dent and sanded it out – almost good as new.  

Stay tuned for a post on how we do our Hardie siding installation.