DIY ATTIC TO 4K HOME THEATER RENOVATION | how to remodel an attic.

DIY ATTIC TO 4K HOME THEATER RENOVATION | how to remodel an attic.


Hey Everybody! My name is Mike Montgomery, and today I would like to show you how to turn an attic like this… Into a home theater like this on Modern Builds When LG reached out about sponsoring an episode of modern builds to promote their new laser 4K projector, the LG Cinabeam. I told them I had the perfect project. My dad has wanted to convert this space into a home theater for well over a decade and since father’s day is right around the corner, I think it’s perfect timing to get that done for him. The LG Cinabeam is not your average projector. On top of having an amazing picture and being incredibly bright, it’s designed to be portable all around your house all the way from projecting onto a blank wall like what we are doing in this theater room, to projecting on the ceiling above your bed. It’s light weight, convenient to carry, and even has a built-in cord reel. How cool is that!? I’ll be giving you guys a proper run down. Clip of the office. “Hey dude, do you know what a run down is?” On this projector a little later on in this video. But right now I just want to give a big thanks to LG for making this whole project possible. And now, Let’s get this project started. Welcome to my parent’s attic where it has looked about like this for the past 15 years since they built the house that I grew up in. Of course attics come in all shapes and sizes but I think this is pretty common built into the roof line of your house. That’s why we have this half wall running the full length of the space and this pitch to the roof. But it’s a great size room. It’s about 24 feet long and 14 feet wide separated into three platforms that gradually get lower for more head room. So now that we’ve got all that covered let me catch you up to speed with what we have already done. Yesterday, myself along with a friend Andy who is a certified electrician, roofed in all the electrical. I started out by putting a box everywhere we either wanted an outlet or a plug. They just nail onto the sides of stud really easily. Then I drilled holes in the studs all the way around the room so we could feed wire from each of those boxes. In this room we have one circuit dedicated to the outlets and a second circuit dedicated to all of the lighting. As Andy fed the romex from one box to the other he was sure to leave about a 12-18″ lead coming out of each box, that way there was plenty of wire to work with whenever it was time to wire the outlets and switches. Installing the canes for the recess lighting wasn’t tough either it was just a little annoying having insulation in the way while I was trying to work. I’ll leave the ones that I used linked below. They are IC rated and air tight meaning that they can come into direct contact with insulation without being a fire hazard. It’s also nice that they are adjustable, they can slide to be centered on the rafters. and tomorrow I’ve got a crew coming to get all of the dry walling done. Of course dry walling is something that you can DIY but this room has a lot of angles and I am not that great of a dry waller. I’ve only ever done dry wall repair work and I know that I would take a long time to get this room done. I’m on a tight time line and I want a good quality finish so I think this is where it’s worth it to call in the professionals. I was really surprised to see how these guys hung this dry wall. No special tool or equipment they just used their head to hold the dry wall up and a hammer and nails to hang the actual drywall. After all the panels were installed they came back to reinforce all of the corners with what’s called corner bead and this is just pin nailed in. After that they mixed up a lot of joint compound and taped and mudded all the seams. It was awesome getting to see the different trouls and tool that they used to get different profiles. Like this bull nose that they used to round over all of the inside corners. Over all this job took them 3 days. I couldn’t imagine how long this would have taken if I would have tried it myself. No funny enough, I didn’t have them dry wallers cover up the window in the attic. At the time we weren’t sure if we wanted to project directly onto the wall or have one of those pull down screens. But after looking at pinterest and seeing a lot of reference images directly projecting was definitely the way I wanted to go. So I hung a piece of drywall over that window and got some joint compound and taped and mudded the patch. After applying a liberal amount of joint compound to fill all of the voids in the seams, I used tape to help strengthen the joint between the existing pieces of drywall. Using the putty knife to sink the tape into the mud and help smooth everything out really reduced the amount of sanding that I would have to do between coats. And since this is the wall that I am going to be projecting onto I’m about to do what’s called a skim coat to smooth everything out. Between the texture that the drywallers put on the wall and the patch over the window this is not a good surface to project onto. The first thing that I did was grab this 9″ dry wall sander from gator, loaded up with some sandpaper and knocked down that texture that had already been applied. Now I wasn’t trying to get this perfectly smooth, I just wanted to get those high points taken care of. After that I got some more joint compound but this time I watered it down that way it would be easier to apply with a paint roller. The consistency of drywall mud is something like smooth peanut butter. I wanted to water it down until it was more like yogurt. I used a high nap roller because I was going for volume here. I wanted a really think first coat because I’m going to be sanding everything down afterwards. What I found on this first coat was that the joint compound dries really fast even when it’s watered down. So I only did about a quarter of the wall then I came back with a dry wall knife and smoothed everything out. Then I repeated those steps three more times until I had the whole projector wall finished. Whenever you are using the drywall knife if you want to make sure you have a really soft touch. We are not trying to dig into the drywall compound, more float on top of it. Just to knock down any of the raised areas and minimize the sanding we will have to do afterwards. I used the same drywall sander as earlier with a little bit less pressure this time and with 150 grit sandpaper instead 120. Now I’ve seen people do multiple skim coats but after this first coat was on it looked really smooth so I decided just to go back and spot check any areas that needed fixed. I used my large drywall knife so I would have the biggest reference surface as possible and I filled in any voids before I sanded that down one last time. I should probably get ahead of the comments and explain why I’m painting this room white since it is going to be a home theater and the reason for that is that I like it and it looks good in photos. That’s it! The projector wall on the other hand is going to be painted with beir silver screen. I looked at a lot of home theater and AV forums online and I found that this is what a lot of people have used with good results for painting projector walls. I applied three coats with a high density foam roller to get a good smooth finish. Now that this paint is dry on the projector wall, I’ve got to test this thing out. I’ve got to see how well this skim coat worked. After a few weeks of work, and little sleep it was awesome to see how good this projector wall loos. Definitely better than a roll out screen. Pretty impressive right?! This is the LG 4K Cinabeam projector and it just might be the coolest projector I have ever seen. Holy Cow! Do you see how good this is?! This is only 100 or so inches, this thing can get all the way up to 150″ and in case your curious just how big 150″ screen looks I’m about to show you. Internally the super compact I shaped engine and cooling system allows for a much smaller footprint about half the size of traditional 4K projectors. This projector is built to be portable completely plug and play. It’s easy to scale your image and focus no matter where your at in the house. All you have to do is place your projector apposing the wall you want to project onto, raise the mirror, and your ready to go. You can have it standing up for a classic design or you can even lay it over so it can project in a more compact area. The LG Cinabeam is capable of automatically keystoning your image to make sure it projects square onto your wall. The magic remote is incredibly convenient. No more pressing buttons, all you have to do it point and click at what you want to select. So that’s all on this projector for now but stay tuned so you can see this thing in action during the big reveal. Let’s keep this project moving. So we are at a fun part of this project. I’m about to tackle the facer boards for each of these risers. The first one is about 6″ tall the second one being closer to 12″ and both of these run about 14″ long so I’m going to be splicing them right down the center of the room. After using a speed square to mark out the intervals for each one of the relief cuts I wanted to make I got my craig track saw set up and I set the depth of the blade at about 1/8″ I’m not cutting through the boards I’m just making a texture with these relief cuts. Towards the base of this foot board the relief cuts are only spaced out about a 1/4″ but the higher up on the board I space them out further almost for a sun burst effect. This is reminiscent of the DIY coffee table that I built while I was at my friend Chris Salamoni’s shop. If you haven’t seen that video the card is in the corner.

100 thoughts on “DIY ATTIC TO 4K HOME THEATER RENOVATION | how to remodel an attic.

  1. That is not a attic and it's a lot of things that's all wrong with that so I hope he fixes it but it still looks nice if you getting the projector for free

  2. @16:33 am I the only one seeing the plug ins that look uneven and it’s upsetting ? .. like I know they get covered but still .. hahaha

  3. Really well made video! Great job on the before and after build. Definitely a pro at building and recording each step with dialogue to carry us along. Thanks for posting this video.

  4. Dad's response was my favorite part! I was going to like the video anyway….but that made me hit the button right then!

  5. Should have built a false swivel wall at the first or second drop-down floor level, covered with stretch reflective fabric (no plastering, filling, sanding). Then kept the window ventilation, and the rest of the 'attic' for discrete storage. A lot less work for a great deal more.

  6. Compairing how electricians work and the equipment they got in the US I just wanna say thank god I was born in Sweden. The boxes they use there feel so clumsy and like something we used here almost 50 years ago or even then. and putting wires inside walls without flextube to pull them through makes me really cry from fear incase something happens. I mean one damaged wire and you have to open entire walls and ceilings. With wires going through flex tubes you just attach the new onto the old and pull until you got new and fresh cables the entire way.

    As I said, thank god Im born and working as electrician in Sweden and not the US 😛 The methods here feel more convenient.

  7. This is bigger than my living room and bathroom combined. Just another reminder that my family is on the average-poor side of life

  8. One way to add just a little bit more luxury to this room would be to sound proof it. Doesn’t seem extremely necessary but would be a good addition.

  9. add some cotton and an air freshener and i mean like air purifier not a plug in scent thing and put a vent in there the cotton will cool the room and reduce echo the air freshen because its a enclosed space with alot of electronic and metal (not a good idea since after 12 days all the oxygen will be iodized) parts and the vent for ventilation.

  10. did you ever think to build out a rectangular wall on the projector wall to make it look like a giant tv popping out of the wall and then maybe put lighting behind? Looks awesome though!!

  11. Not an attic unless you have a whole other level of house where the attic is. How tf do you have other rooms in the attic?

  12. I'm not really gonna go into all the things already mentioned by others (like the window, nails into drywalls etc.), but what I haven't really seen: So he spends several thousand $ on work and material + 2700$ (probably paid promotion from LG?) and then uses that shitty soundbar? No proper speakers? Dolby Atmos could have been possible, but he didn't even get rear or side speaks for 5.1? Is this some kind of joke I'm to stupid for? Or didn't he bother because the Soundbar will probably already echo like hell?
    It's just weird to see all this work (and a good idea at its base), but then botching it so much.

  13. Looks great but I think you could do with an additional step at the rear level change as it seems too deep to me, seeing your dad step down it.

  14. horrible. It's a theater. Dark grey walls and black. Sound softening materials on the walls like heavy curtains or sound board. Bass traps in the corners. LED light strips around the sound boards on the walls. LED down lights that dim and are tied together on a smart dimmer. An iPad as a remote. REAL fucking speakers. shit. what a waste.

  15. Cool deal…..though for a projector movie room, the color is all wrong. Paint the entire room with matte black paint as a primer, then some 2 coats of Rosco flat black paint. Add a curtain of black velvet instead of the white sheet. Picture quality will be night and day difference. Also you should add some acustic panels if there are big speakers in the future

  16. How did the batt insulation work? Which climate zone are you? Do you have a moisture/vapor barrier between drywall and insulation?

  17. Maybe for now he should put a turbine whirlybird to help cool and removed staled air. Make like an access panel to cover when not needed. make it like many attic opening are made and covered. This would be the cheapest way to go, then to spend more money in a room that won't be used every day.

  18. And then the professionals came and knocked nails into dry walls.
    Then he left the window in and clap dry walls over it.
    Do not you go to the hardware store and ask how to do something?
    Remove the window and then close the hole. You do not want to have condensed water between the window and the drywall.
    In the roof you should install roof windows for fresh air.
    Acoustic absorbers help against the echo.
    And why a soundbar? A 5.1 AV Reciver would have been better with Nubert Speaker.

  19. To have a custom built "home theater" with a projector, but using a soundbar and a subwoofer that's smaller than my bookshelf speakers seems unbalanced. In a room with exposed walls you could have easily wired a 7.2 system cleanly. It's easy and relatively inexpensive to have a good image these days – either by using a large LCD or OLED TV or a projector… but without a wall of beautiful sound, this isn't a home theater.

  20. U did all that work and I just gave it to someone oh he'll no! When he said now I got a mancave I would have been like fuck u it's mine

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