All my windows are now installed! After the initial learning curve, and a bit of a mess with some caulking, everything went smoothly. 🙂 Prepare for pictures! Here we go:
This is how I installed my windows, based on the instructions that came with them (and influenced by some online research). Different brands have different installation instructions. My windows are Peter Kohler brand.
Step 1: Cut an upside down martini glass shape in the house wrap.
Step 2: Trim the house wrap and tape the edges down (sides and bottom).
Step 3: Cut a flap in the house wrap above the window, 45° angles from the corners and high enough to fit the width of the window flashing underneath. Tape it up.
Step 4: Cut squares of flashing and add them to the bottom corners of the window.
This is how the Peter Kohler instructions showed to cut the pieces for the corners, but I have seen multiple different ways of doing this part. I only did it this way for my first window because I found it doesn’t adequately seal the corner even after you put the sill flashing on, and I didn’t like how little flashing was below the window in the end. For the rest of my windows, I did a full piece of flashing like the picture below, and then put the sill flashing on as well.
Step 5: Cut a piece 12″ longer than the sill, and apply it with 6″ up the side of the window.
Step 6: Put shims on the sill and check them with a level. I ended up taping mine so they would stay, and I planned to cut the ends off later. My instructions also had specific locations for shims on the sides, 3 on the hinge side and 2 on the other side. I almost quit at this point. Even if I could lift the window by myself, how was I supposed to put it in without having someone on the inside to help guide me? Other tiny housers installed their windows as a team: one person inside and one person outside.
I took a breather, went back to the window opening, and taped the side shims in place as well. That would help me center the window as I put it in.
Step 7: First, have fasteners ready to go. The fasteners should be long enough to go an inch into the framing, so at least 1 3/4″ if you have 1/2″ sheathing because that accounts for the thickness of the vinyl. I also wanted something that had more gripping power than a smooth nail, considering all the vibration the house will go through on the road. But the hardware store only had 1 1/2″ nails with a rough finish, and 2″ smooth shank nails. So I went with a mix of the two.
Apply a bead of caulking closely around the opening, leaving gaps at the bottom.
Steps 8/9/10?: Put the window in (some say to tilt it in, I ended up trying to carefully set the window in in a way that it didn’t disturb the shims). Hammer a nail in part way in, 4-6″ down from a top corner. Check that the window operates smoothly. Personally, I added two more nails in random places, then I checked the operation of the window again, just to be sure.
Step 11: Hammer the first few nails all the way in, then fill the rest of the pre-punched holes with nails.
Step 12: Apply flashing to the sides of the window, covering the nails and reaching at least a half inch past the bottom flashing and 2-3″ above the top of the window.
Step 13: Apply flashing to the top of the window, reaching one inch past the edges of the side flashing.
Step 14: Flip down the flap, trim it, and tape it. The instructions didn’t say to trim or tape it, they were very vague for this part, but it’s my understanding that it’s best to tape every edge of the house wrap so it preforms better. So that’s what I did.
My mum helped me lift the two bigger windows into place, and my grandpa helped me with my kitchen window! Honestly, the windows were a bit easier than expected. Yay! Enjoy some more window-installation and family pictures below:
I also flashed around my front door so there’s no longer a drafty gap there:
Phew, that was a post and a half, huh? Stay tuned, I have more things to share!