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:
The bathroom and entrance windows
The living/dining room window and the kitchen window
The front window for the window seat🙂
And of course, my octagon!
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.
You can see in this picture that I added a little rectangle of flashing to the corners, similar to what I did with any weak spots in the skylight flashing.
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.
I was way better at a continuous, even bead of caulking on the later windows.😛 This was the first!
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.
This window went in pretty smoothly, but when I did the bathroom window, I accidentally lifted the window too high, and unknowingly got caulking all over the inside of the window. When I went inside to check the operation, I saw the mess, and my parents helped me find some mineral spirits to get it off.🙂
Also check that there’s a gap all the way around the window, that the window is centered in the rough opening. The instructions for these windows called for a 5/8″ gap. Do NOT shim above the window. There should be no load transfer onto a window. This window doesn’t have a large header because it’s only 18″ wide, but normally there would be a header made of 2x4s on their side with a piece of 1/2″ ply in between.
Step 11: Hammer the first few nails all the way in, then fill the rest of the pre-punched holes with nails.
On one of my windows, there was a gap between the sheathing and the nailing flange in one spot, even though the window was pressed tight to the house. I ended up shimming behind a couple of nails after the first nail started to pull the nailing flange away from the window.
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.
Maybe I should’ve taken the step-by-step pictures after I’d gotten better at placing the flashing.😛
Step 13: Apply flashing to the top of the window, reaching one inch past the edges of the side flashing.
Always apply any flashing, tape, house wrap, etc. starting at the bottom. That way, water will run down the layers, rather than having the potential to sneak in behind an edge.
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.
You’re not supposed to flash the bottom of the window, so any water or condensation that gets into the sill can drain out. Notice how little flashing there is showing underneath? For the rest of the windows, I put the first piece of flashing lower just so I felt more comfortable with it.
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:
It’s pretty fun to cut house wrap. I did some cutting from the inside and the outside.
These windows are the exact same size, by the way.
I still have to cut the ends of the shims off.
I ended up taking the side shims out of the entrance window, they don’t seem to serve a purpose and the gap will be filled with insulation later.
Goodbye important step in my “ladder” to the loft. I can’t step on this sill anymore!
Mum and I used this configuration of my fancy ladder to install the two big windows too.
The kitchen window sill was the least level of all my windows because of a teeny mistake in my framing. So it took a lot longer to get the shims exactly right, but it’s level now! I also double-checked that the trailer was still level before installing any of the windows.
My lil kitchen window
Adapting the flashing for the octagon shape.
I ended up trimming the flashing where the window is so close to the roof.
My must-haves for rough-opening prep.
My fave window. Ah who am I kidding, I love them all!
Ya, I’m proud!
When the grandparents visit and want a tour.🙂
My window opens, my window opens, my window opens😀
I convinced my momma to climb up into the loft!
I also flashed around my front door so there’s no longer a drafty gap there:
I love my lil porch!
Phew, that was a post and a half, huh? Stay tuned, I have more things to share!