How To Install Styrofoam Insulation On A Home's Exterior
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- Опубликовано: 22 авг 2024
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Shannon from www.house-impr... shows you how to install rigid styrofoam on the exterior of a home, prior to installing siding.
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Video © 2018 SKS Media. Videos produced by SKS Media (House-Improvements.com) are provided for informational purposes only. The information contained in the videos is intended to give general guidance to simplify DIY (do it yourself) projects. Because tools, products, materials, equipment, techniques, building codes and local regulations are constantly changing, SKS Media cannot and does not assume any responsibility or liability for the accuracy of the information contained therein. Further, SKS Media will not accept any claim for liability related to, but not limited to, omissions, errors, injury, damage or the outcome of any project. It is the responsibility of the viewer to ensure compliance with all applicable laws, rules, codes and regulations for a project. The viewer must always take proper safety precautions and exercise caution when taking on any project. If there are any questions or doubt in regards to the element of a project, please consult with a licensed professional. SKS Media conducts all matters in accordance with the laws of Saskatchewan, Canada.
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Your videos are awesome. You walk the viewer through and are very creative. You are a doer and not a big talker which is great. Thanks for putting these out. Stay warm in Sask.
I've been wanting to do this on one side of my house where the siding is screwed up and you come along with such excellent instructions! I've loved so many of your other videos and I'm SO GRATEFUL you did this one. Thanks a ton!!
Some window manufacturers (Vinylguard in Canada) have a extended brick mould that allows for up to 2" insulation. This sets the actual thermal glass into the wall and not on the exterior of the wall. They also have optional jamb extensions for the inside allowing it to be flush with drywall.
Thanks for the tip ducebigalow.
Looks good, nice with the house wrap behind it first for any water issues.
Thanks for making this vid! I was watching at 1.75x speed, and I gotta give your cameraman props for having such a steady hand!
Yes actually i am still very easy to understand at that speed and the video quality is great. Thanks for the comments
I just finished a job like this yesterday lol . I took off this guys siding and installed thorax and foam then replaced the siding ..so I was watching this utube video , not this one but another , and this guy says you don’t need to install tyvek or thorax lol , homeowners beware of contractors who claim you don’t need house wrap . It is almost more important than the siding itself
I dont know much about wrapping. But do people put this stuff over top the older built homes ie bungalows that have those stucco? how would you layer it for old houses with stucco on the exterior? in example do people put paper down--> wooden frame---> styrfoam insulation---> plastic siding? I'm a total noob any ALL OF THIS STUFF. Looking to learn more before getting a friend to do this in the near future on my dads house. maybe in 2-3 years from now. I also live in Alberta Canada so it can go down to Negative -40 degree C which is -104 F
@@jeffd3147 if your going to go over stucco you need to put wooden cleats on the building kinda like studs on the side of the house that you can then mail the siding to , obviously there is a lot of other things you need to do in preparation . That’s only if you don’t want to just rip off the stucco
I love your attention to detail Shannon. Others would be lazy an not have cut that lip.
I like the 1.5" foam with the 0.5" plywood at the corners. Nice work!
Do you know how to install vinyl sliding over styrofoam board
You might mention the spray foam should be minimal expanding from or it can blow the rigid foam off of the house. Just a thought I'm sure you have put it around doors and windows starting out and seized them fast. Just another thought a video on the different types of foam might be helpful for all of us. Love the content of your video thanks for taking your time to educate us.
Really good and professional work . Around our area in W PA we have enough rain and moisture to contend with that
we suggest to the architect/homeowners the have us cover the house sill. I didn't see that
done in the video segment but sealing at the bottom helps water drain without touching the lumber surface.
@pensive69 do you have links to share on how covering the house sill is done. Thanks in advance for any info
You can add flashing around existing windows that extended window frame to thickness of finished wall. That requires custom bending.
I'm glad you posted this video because it spoke to my concerns. I agree, the best way was to go with the house wrap first. The other way is going to be met with balloons forming and you racing around trying to secure the wrap. Thanks , great video
In Ontario Canada, you don't need the wrap with foil back rigid insulation, you can just tuck tape the joints.
Chill dude. Good teacher vibes.
Awesome! I can’t tell you enough of grateful
I am that you explain everything as well as you do. You covered everything and very easy to understand!
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You are one of my favorite channels to follow for home improvement projects. I'm actually running into the similar situation, i have 1" rigid foam and building up 1" buck around the opening where we can install window (nailing fin) on the top it looks like perfect solution, this way the foam will be flush with the fin. The only question is when reviewing the code and installation instructions it says: "Embedment must be a minimum of 1 1/4" into the structural framing" So is the 1" buck counts as the "framing" since technically it is 'outside' of the wall framing? My window depth is 3.25" that leaves 2.25 before the fin minus the sheeting 0.75" which leaves 1.5" embedded into the frame (2x4) If we build the buck 1" out, that will technically leave the window only 0.5" inside the frame (2x4)
Yup you are fine.
Thank you for the video. Getting ready to re-side my house (or part of it for now). I had a couple questions, but you cleared them up for me.
Shannon good video, you could've built a box of the 2" foam around, at least, the conduit part, of the meter box, just an Idea. I've been an electrician, for 30 years, there's no safety issue, in doing it, as I suggested. It just might help keep a little more air in.
I talked to Owens Corning. You can make the window Frame and treat the rigid foam as a second sheathing and then places the window flashing on top of the rigid foam. much better, much cleaner looking, and less susceptible to leaks.
Exterior insulation makes so much more sense, including below grade. You don't eat your jacket to stay warm.
Haha, I like that comparison!
@@HouseImprovements Joe Istiburek of Building Science uses the same expression. Canadians (he's from Canada) don't eat their jackets; they wear them. Make your house wear the jacket!
Job well done. A little extra effort goes a log way.
You could use 3 inch decking screws with a fender washer on them to hold down the foam board. Do you worry about having to vapor barriers the foam board being one and faced fiberglass insulation on the interior of the house? Wouldn’t that trap moisture?
I was wondering the same thing. Have you looked in to it ?
I love your videos, you always explain in details for anyone to understand. Doesn’t exterior foam insulation prevent moisture from escaping. If you have insulation in the walls with an interior vapour barrier, I understand you’d be trapping moisture in the wall? Plus tapping the joints further prevents moisture to escape?
It can be possible but rare in my area
Another quality video and I’m sure a job well done! Great man!
It's my understanding that the house wrap goes at the same depth of your windows.
His windows are installed on the ply wood, so wrap gets installed on ply wood.
If the windows were built out to match the insulation, the wrap should be installed on the installation.
Thank you shannon, you give me good ideas when I'm building stuff
I would like to do this as well but not too keen on having an extended window sill to collect snow and moisture
Same im from new brunswick canada . House build in the 60 but the inside brand new , i wonder if insulated foam really worth it or not when im doing the outside. The winter can get pretty cold
Love your work and videos
Did this reduce noise from outside by much? I live near a busy road and this looks promising!
Generally its recommended that the house wrap selected should include drainage plane.
depends where you live really and what you are placing over it.
@ Darren Conlen do you have any resources to share on how to do the drainage plane. Thanks!
Should you be spacing the foam away from the wrap with furring strips?
Taping the house wrap to the bottom window trim is probably a bad idea. If there is a leak around the trim, it will funnel water right to the sheathing. But then that's probably the best you can do without taking the windows and redoing the sill pan.
Can it be used on a concrete floor then lay laminate flooring on top bit like a floating floor I mean don't glue it to the concrete so the concrete can expand and shrink at will.
if anyone can answer: will placing this foam insulation, the additional water barrier and then sealing the whole insulation/water barrier now make a moisture trap? a moisture trap that will not let the wall breathe and thus create moisture damage and a mold problem?
I am looking to replace some really poor siding with the foil wrap 1" from Home Depot and then siding it later. I understand it can be left that way a couple months til we can get the siding. Do you know how that compares to what you are doing? We really don't want to go as thick as that…and we really think the reflective foil should help on a hot west exposure. Thankx for any advice. Looks great what you've done!
1" is the min. thickness I would recommend. Secure it well if not siding for a couple months so the wind does not remove it.
What about the soffit j-channel ? Would you screw the soffit channel over top the foam ? Or would you have to put a strip of wood for the j-channel then run your foam just to the bottom of the wood strip ? No one seems to know this in my area. Please help
Hello Shannon, I love your videos they always have great info. I am getting ready to reside my home. It already has foam board insulation underneath siding. Would it be ok to reuse the existing foam board insulation?
Looks great! But now how do I put siding on 1.5 inches of styrofoam?
I install vinyl siding all the time over up to 2" thick rigid foam insulation. I use 3" shingle nails. For 1-1/2" styrofoam I would use 2-1/2" nails. Some other sidings restrict the thickness of insulation under them to 1" max. An example would be cement board siding
Nice project
how can we hire you! :) wish the local contractors here were as diligent -- shiplap style rigid foam, wow! nobody has ever mentioned this option to us for air sealing.
Great videos, do you have a video how to install vinyl siding for old houses with asbestos siding .Thanks.
No, sorry
Im thinking taping seams id a bad idea, i want some breathability still? Thinking about 3/4 foamular over cdx and housewrap. Steel and stucco for siding. Cold high desert
Can you do this In a cylinder block house? Cause my house has no insulation on it
This was very helpful and informative. Thanks!
Holy shit Americans finally discovered the benefits of adding insulation to the outside of a home rather than stuffing their wall cavities with cotton candy. Welcome to the 21st century.
I'm Canadian actually and we have done this for years.
Nice video Shannon thank you. I’m doing this exact method on my house. I was wondering how you finished off the house wrap under the ledger board? Did you flash behind it like a deck ledger?
personally I just install the bottom ledger over the wrap and thats it. If you are concerned you may what to use flashing membrane over the ledger.
@@HouseImprovements - doesn't the bottom 2x6 ledger board you used create a thermal bridge? Wouldn't it be better to use a type of metal edging at the bottom and then use the foam? Does this type of bottom metal edging exist?
Thank you for so many minute details that make such a big difference in doing this right! I was wondering if you could do a review on the gable end of the house as there is no overhang from the roof, just dripedge. I guess what i'm asking is how to extend dripedge over the styrofoam and vinyl siding? Thanks
Ah yes that is a problem if you are adding foam when you have no gable overhangs. If you come to the forum we can discuss this situation in depth better. www.house-improvements.com/forums/
Hi! I want to know if styrofome is recomended for a house made of wood? And to put styrofome on the inside as well?
So, if you're going to cut out for the window extension, why not do that when you're putting up the foam insulation? Why cut twice? Doesn't that also risk cutting your air seal? Thanks.
you could do that.
Great solution. What about the doors?
I've seen furring strips used on top of the foam. Would you expect that much moisture to creep in and need to dry out?
In some regions that is required.
Here's on for you (and any other builders). I want to 100mm EWI my house with a render finish on the ground floor and vertical hanging wall tiles on the first floor. How on earth can I hang literally tons of vertical tiles upstairs securely? Any advice appreciated
Awesome video. Thank you. I notice that your soffit is in place before you apply the foam. Is it ok to put the foam on first and then install your F channel and Sofitel over the foam?
it is , on thicker foam it just means longer screws
@@HouseImprovements - I was wondering the same thing as Richard. I see that you answered his question. Can one stucco over the foam?
Is any chance mold can appear between foam board and home wrap? As I see there is no gap for venting. What do you think?
I had the same question. You now have a vapor barrier inside behind you gyp, on the warm side, and with the xps, you have added another vapor barrier. Kind of possible to "trap" any vapor moving from warm to cold.
There is - I have heard - a rule of thumb about what % of you R value can be outside the housewrap, vs on the warm side.
I'm doing the same as done here, so need to figure it out. Roxul is vapor permeable, so isn't an issue I don't think.
This is why it is not a good idea to use XPS foam (like the one used in this video) on the exterior side of the house. Instead you should be using EPS styrofoam. Because eps foam will not trap vapor.
There are EPS styrofoam sheets that has channels on the back side which helps air movement and ventilation. Durock has Puccs Styroams as an example.
Would installing Styrofoam on the outside block foundation of my manufactured home be a good idea to control heat loss in winter?
Most are insulated inside.
Would like to see how to address existing exterior faucets. Installed boards from the bottom up rather than top down. Is it easier? Thank you Shannon.
You could install form top down if you wanted.
extruding items in the way can be cut out so you can get the foam on around them and then spray foam the holes /gaps tight with low expansion sprayfoam in a can. If you have more questions please use my forum. www.house-improvements.com/forums/
thanks for answering questions my home older home has aluminum siding over wood lap siding i am in the permit process now can i install two inch foam over lap siding thank you studying your videos
You could but its really not the best. I would recommend removing all siding right back to the wall sheeting and starting fresh.
For the tyvex/Typar what size roll did you use? 10 ft x 100 ft roll? Thank you, I need to do this to my house. I assume the next step is to add wood strips, then thi siding...
Thank you for this video. My heating bill is going up, so I want to install a similar insulation styrofoam on the top of my brick wall. Question - do you allow the gaps in between the foam sheets to allow the thermal expansion? Why don't use the pressure-treated wood for the outside styrofoam support? Also, if I use the blue tapcon screws to attach the styrofoam to the wall - they may rust, but will they rust under the siding? Again, if I will use a siding above the styrofoam then how can I nail/screw it to the brick wall behind it? Again the tapcon screws will rust.
I think you need to join our forum, you post a lot of questions an dit is easier to help you from the forum.www.house-improvements.com/forums/
@@HouseImprovements I was trying to register, but never had registration email on that site.
Try a different browser when you apply. Sometimes that does it.. If that does not work email us at info@house-improvements.com and maybe admin. can figure out why you can't register.
Will the 2 inch foam stick out past the windows/doors? If so won't that mean the J will be out past too? I thought you said on another video to not let the J stick out past the windows?
again I asked to soon bad habit
How could I insulate exterior block walls here in Tampa, FL? I am wanting to put the insulation material/products on the outside of the home.
Come to our forum with your question we can help you from there.www.house-improvements.com/forums/
@@HouseImprovements I only have a Gmail account and I cannot register.
Don't you have to have a vertical rainscreen strapping on top of the foam board (1x2 treated) to prevent the condensation between the siding and the foam board? If so, you would have to build up the window trim even farther out.
Some places need a rain screen some dont. If you need it then yes you need to be wider with your trim
If it is tongue and groove Pink Board, installed vertically, should we still use tape? AND, should the pink board be installed Vertically or Horizontally? Anyone?
Thank you.
Im wondering too, i say no tape and grooves vertical on studs
Love your videos. I have rewatched this three times and I still don’t understand what you did at the corner. Why cannot you nail all the way through to the corner studs with your siding fasteners? I just can’t visualize why addition OSB and 2-by is necessary. 😅
The thickness of the added styrofoam (2" in this case) moves the corner piece of siding to far away from the original corner wood of the house to actually hit it with nails. The system I use gives you some plywood to fasten to again. Wider corners that what I have may reach without doing what I did , but in my area wider corners are not available.
@@HouseImprovements I am adding 1" foam, do you think that corner will still be an issue for my build when adding the battens and LP Smartside siding panels?
About the house wrap and insulation - what about the moisture that comes out of house with the air, doesn't it get stuck between the wrap and the insulation?
There is very little here because we have a vapour barrier on the interior.
Is it possible to change soffit after adding foam to the exterior wall? Also what's the best way to install foam around existing deck?
Great detail! Thanks! What kind of tape do you use on the vapor barrier?
Hi Shannon, I love watching your videos you have all the details step x step. Just wonder if you can do a Hardie plank video...
Don't have one coming up right away but that is on our wish list
He’s definitely the best! Very detailed videos!
After the house is wrapped do you need the foam before putting the siding?
You dont need to add foam, its only if you want to add insulation value.
So what trim was used around the window?
The painted trim is made by "Smart Trim" and the PVC trims are pretty common at most big box stores and lumber yards.
I see that on top you are going up to the soffit. Would it be better to remove the soffit/j channel and place styrofoam all the way up? Also what are your thoughts about digging about a foot or more around the foundation and installing the foam down bellow grade? Thanks
Both of those are great options if you can.
Is house wrap necessary if the foam is going to be sealed?
Great videos! I'm currently adding 1in foam to portions of my house and I have one wall that has a roof edge along it. It's already shingles and flashed onto the wall but now adding the foam and at the edge of the roof where the gutter will be...not sure how to address that, do you have a vid that does, or thoughts. Sorry bad description.
I believe I understand what you have going on there but I would suggest you come to the forum and repost your question with a couple of photos to help us see your situation. www.house-improvements.com/forums/
can the same be material and technique be applied on block or brick?
Very helpful. Thank you for the tips.
how do you install the siding then? Use 3 inch nails then? Does it not defeat the purpose of thermal bridging then to put a million nails in through the foam? No rain screen or furring strips?
Typically yes, longer nails or I would use screws for vinyl siding. I would not strap the rigid prior to vinyl siding, as you could get air behind it thus rattling the siding.
@@ducebigalow8834 odd. Never heard of rattling siding. Where has this happened?
Several builders do recommend @NateM's idea of furring strips. The air gap also acts as a water runoff if there's a water barrier there for anything the siding doesn't stop (like backed up gutters, melting ice dams, etc.)
Would you suggest using spray foam in the corners to help adhere the foam most at risk of being blown off?
You can but you can also throw in a few extra fasteners.
Love your videos thank you what if you were doing a fresh build and had to put up OSB still would you keep the orientation the same or would you put the OSB on the outside of the XPS
Just like this.
Shouldn't all the wood used at the bottom of the house and the electrical unit be treated wood?
No not really, it is not in contact with the ground and really should not get wet often and if it does should easily dry out. If you use treated wood then be sure your nails/screws are ok to use with treated lumber and you would have to use copper or some kind of vinyl at the electrical service because metal or aluminum should not be in contact with PT wood. You could use metal or aluminum if you used a membrane or maybe even house wrap between the PT and metal.
aah, I see thanks for the advise.
Hi Shannon, I'm learning alot from your videos. I'm preparing for vinyl siding applied to existing wood siding, would you be adding furring strips to your foam insulated walls for nailing "new" siding to or do you apply siding directly to foam and use longer nail to insure vinyl is nailed to wood?
I install directly over the foam . In this case I have 2" foam and Im using 3" nails.
Sir, do you have any videos on building a ground level deck? Great videos by the way. Having a hard time finding anything on how to prep for the build.
Excellent stuff
How do you lével with show-lite the edger of the pieces of Foam or white pholiteleno (video)
Does it have to be Ridgid? I was going to see what comes in a roll. We are doing a shed
I also bought house wrap and siding.
Please tell me the name of any products that you could recommend
We are in Florida moisture is a big deal here never really cold tho
For Florida you should check your local codes for specific types of adding insulation , You have unique climate variables compared to my area.
@@HouseImprovements yes I know most videos are geared to up north conditions we got humidity moldoldew and rain damage here to consider.
If I'm adding 2 new windows on a new wall that isn't sided yet, would you recommend adding the foam board prior to installing the windows like you said in video? And installing wood like a picture frame to match the depth of the 1 inch foam board? Or would you recommend just installing windows on the sheathing and then adding the foam board on top and going from there
In the case of new windows you would picture frame the opening like you said with wood the same thickness as the foam and then install the window and foam gets installed against the picture frame.
hi how do you lineup the corners when one side starts higher up then the other
This is going to sound gay or something but your channel and approach is very warming and easy to listen to for burgeoning tradesmen like myself.
Thanks. Great info.
is exterior insulation vital? Building a house in NC, mild temps, should I do the exterior or just stick with 2' by 4' studs and fiberglass insulation in the gaps?
It will help keep the heat out better as well but for your area it is not likely as critical to use it.
Hello Shannon, thanks for your excellent videos! Where do you find shiplap style foam board here in the US? So far, all I see is square edge. Thank you.
I'm in Canada so I'm not sure . Its readily available all over here.
@@HouseImprovements
Thanks for replying. I did some more research and it looks like they call it tongue and groove also.
great vid, thanks
Hi Shannon, I have a question, Im putting up LP osb panel siding and removing old masonite. The walls have foil covered 5/8" insulation board nailed to the studs that are insulated with fiberglass batts. Of course the interior walls have a plastic barrier finished with sheetrock. Does the plastic barrier on the interior serve as an adequate vapor barrier with the foil covered insulation board? I have already finished one wall on the house and put house wrap over the insulation board. was that wrong or even okay but unnecessary ? Im getting ready to start on another wall and considering replacing the 5/8" insulation board with the 2" that you used in this video. Thanks
Yes , the interior poly is the vapour barrier, it is always placed on what would be the the warm side of the wall during winter months.
@@HouseImprovements THANKS SHANNON. I am assuming the house wrap over the existing insulation board would be redundant. Correct? Thank you again, Ive learned a lot watching your videos and the boost in self confidence is invaluable.
Great video Shannon. Waiting for warmer temperatures to start my siding project. Material is in yard. Haven't yet ordered the XPS foam board but, I'm considering using FOAMULAR 250 3 inch R-15 insulation Sheathing under 10 inch staggered shake vinyl siding for a NY zone 4 climate. Any thoughts?
i have an older home with aluminum siding i want to remove aluminum add 2in foam do i need house wrap under the foam
You should have it either under or over the foam, it should be installed
nice explanation I am planning on doing this I was wandering do you recommend open or closed cell
Rigid foam panels are all closed cell. Spray foam can be purchased as open or closed .
@@HouseImprovements ok thanks
Im going to be doing this to my house from 1920. The toung and groove sheething is not as reliable as i would like it to be . Can i go over it with 3/4 inch osb, or plywood, in order to have have something secure to screw into. Or would i have to remove the old sheething and start from the beams?
I'm a contractor and don't trust nailing the vinyl siding though the 2" styro. I decided to strap on top of the rigid. Have you ever installed vinyl siding that way?
I have not but you can. IMO it is really not needed but it won't hurt anything.
great video, good explanations, what is on the inside of these walls, and are you insulating for heat? or cold? or both?
I am in Central Ontario Canada, winter runs about 4- 6 months some years.
Both! I'm in Saskatchewan so cold is our main reason to insulate.
@@HouseImprovements Oh yeah, I have seen the weather you guys get. Something Else I was asking is what is on the inside of the house? in the wall cavity.
Just remember, if you bring your windows out further with a 2x4 or whatever you use, you will have to adjust the inside of your windows ( sill ) to match the drywall.
Yes if you are replacing them and moving them out then you want deeper sills.
@@HouseImprovements do you happen to have a video of how foam is done around windows and putting siding on over the foam ?
You are not afraid of putting Typar over OSB and foam over? Have you seen what happens to OSB or any other sheathing after 10 years if you do this? In my opinion, you are trapping moisture that will condense on the outside side of the sheathing, between the sheathing and Typar. The wall is covered with the foam and moisture doesn't have a place to go, which will rotten the OSB. This method probably should work in the warm climate, but will destroy the sheathing in the cold climate. Great advice on the corners using 1.5'' foam and 1/2'' OSB to make it flush.
I have removed areas of this type of exterior construction to add windows in homes that were done anywhere from around 5 to 15 yrs previous. Never have seen rotted sheathing. Very common practice in the prairies of Canada.
@@HouseImprovements My experience had been different. Every wall that we opened that had foam, Tyvek, OSB and fiberglass inside (OSB was rotten from the inside) because moisture in the winter condensed on OSB
@@ontimecontractorsinc6513 Poor interior air /vapour barriers I would suspect?
looks good but, it seems you have skipped the top 6" or so of the wall, above the soffit. Judging by the ship lapped for sheathing, the roof rafters are likely birds mouthed, so that your soffit as down on the wall. That is a pretty large strip of the entire house to ignore. the Rigid should run up to the roof sheathing under the soffit (minus the vent space for the attic). What did you do for this, or is this house different than my assumption
This soffit was existing and was not being changed. So yes if you have no soffit in place you would go right up the wall.
If I’m wrapping the exterior of the house with 2” of foam do I still need a vapor barrier on the inside of the house? I live in Alaska and our vapor barrier is behind the Drywall. I’m wondering how will the wall cavity breathe, or does it even need to? Great video!
You still need a vapour barrier on the warm side of the wall. Make sure that the exterior siding still allows the wall to breath.
@@aaronpops4108 - does this make a "double vapour barrier" that could sandwich moisture in the wall cavity?
@@corylechner8303 the correct exterior foam insulation would be vapor permeable. Foam boards have different ratings of permeability. I don't know what rating it should be, only that the wall still has to dry to the outside in a cold climate.
@@aaronpops4108- I hear what you are saying. What water permeable foam board product would you recommend? BTW - we already have a poly vapour barrier film directly under the drywall in the home's interior walls (thus I'm worried about a "double vapour barrier" issue). And we have a very cold climate where I live (Saskatchewan, Canada, eh!)
@@corylechner8303I like Silverboard graphite exterior insulation from Lowe's. I believe it is also made in Canada. But there's several good products out there, that's just what I used.