Well, what can I say – it’s been awhile since updating the goings-on at the Misadventures project. Oh, there’s lots of activity – it’s just that it’s not so photogenic.I put in a full day every day – but it’s pretty lame stuff pictorially.
Since the weather has been decent, I’ve started the siding project. But before we slap up some Hardie cement siding, we have to get the Water Table trim on. This is a traditional trim detail at the bottom of the building and acts as a skirt board band to separate the siding from the foundation. My house never had this originally – and I haven’t seen one house around here that has it – but what the heck let’s put some on.
Let’s get started, shall we?
We’ll tackle the hard part first. Pictured above is the first step. A flashing membrane is added to the top of the stone to prevent water from going behind the stone and lath and freezing. Behind the stone is the MTI rainscreen which is applied over 30 pound asphalt builders felt which is over the weather resistive house wrap. The rain screen has weeps in the lower part of the stone to let the moisture escape. The siding will also have a rain screen that ties into this weep system. Makes sense? Even I’m confused.
Once the flashing is installed the kiln dried pressure treated nailer goes on. This is a combination of a 2X4 and 1X4 – use kiln dried pressure treated lumber if you want a straight and stable base to fasten your Azek trim.
Of course, nothing at the Misadventures goes that smoothly. So after I installed all of the nailers I took them all off again. Why? Because I only beveled the top 5 degrees instead of 12. Five degrees is just not enough to effectively shed water. You can see the difference of 5 vs. 12 above. After reinstalling, spray foam was added to the gap underneath between the wood and flashing and cut flush to the wood face.
To prep the old portion of the house that only gets siding – the lower three feet of the house wrap was removed to wrap flexible flashing over the metal cap at the bottom of the 1/2″ CDX plywood that overlaid the original lap siding. This is to keep water from entering between the plywood and metal.
New housewrap was installed and a layer of 30 pound builder’s felt was added. Typically you won’t need this – but remember the house wrap is pretty old. It’s exposure rate is about 3 months maximum, not three years. So I added the felt just to make sure things keep dry.
Over the felt goes the Green Guard rainscreen. This allows the wall to drain any moisture that may rot the wall sheathing over time. This is attached with 1 1/2″ plastic cap nails.
And we do the same thing around the bottom of the old house. See that I previously put the new underground electric box on a Azek base so that the siding will butt up against this, making a clean transition.
The Azek trim is routed with a channel that fits around the metal lip with flashing. This allows the moisture a path out of the building. Since Azek is 18 feel long, putting this floppy stuff up by myself is a challenge. I made this handy Azek -holder-upper using an old floor jack.
Going around the corner it goes over the rainscreen. An angled cap goes on top of this – and then the corner boards will be added. So, not very interesting unless you’re doing the same thing – which you probably aren’t.
Stay tuned – it’s gotta get better than this.