Thanks for sharing your knowledge and experience!

Very well said,,I spent 35yrs in below grade above waterproofing,interior and exterior sealants all on commercial level. Great video

@SprayJones

2 ай бұрын

Thanks for sharing

SJ you are the coolest guy i know !!wait no depends on the season!! if it is winter you are the warmest guy i know..:) only in the summer you are the coolest guy !! you and your team rock and i dont mean wool ...oh sorry cant stop the puns..

Hi Spray Jones, another quick question based on the very few last seconds of the video. I got lots of 2*8 studs that are stacked side by side, in some instances up to 5 deep. I am currently working on ceiling those seams throughout the house as I await spray foam installation throughout. You mentioned no poly, which I obviously wasn't planning on for the rest of the building, but would it make any sense at all to have small strips on these stacked members... On top of the seams being already sealed? So basically get the seams sealed, and then cut a full lengths poly just for the width of the stacked members, without any poly prodtrucing into the sprayed wall cavity? Like a backup extra layer of protection in case there is a small leak somewhere in the caulking?

@SprayJones

4 ай бұрын

We used to use tape to cover the caulking, only so that the interior boarding would not damage the caulking when being installed. We since use a caulking that skins over and is tough. There is no need to put poly, plus the "flap" you propose would need to be 100% sealed on all edges to be of any assistance.

At 9:42 you point out a installation failure. You mentioned that it probably happened pretty quickly. How long after the spray foam is applied should I wait to start drywall to insure this type of failure doesn’t happen after i cant see it?

In theory or practice does it make a difference if seams between studs & headers are caulked on the outside-facing side (during framing) or inside-facing side (after framing is complete)?

@SprayJones

4 ай бұрын

Both is best. No one does outside.

Firt to know this one 👌

Spray foam is great, do you think it'd be useful to have a formula which changes color with prolonged liquid exposure? So all the foam would change color a little from normal vapor exposure, but in the case of a failed roof area you'd be able to detect a very dark area.

@SprayJones

4 ай бұрын

Interesting idea, wouldn't work too well. The moist in a roof would be held at the outside layer, so how would the moisture wick through a closed cell system to show a color change on the inside... you see?

i understand about not using a double vapor barrier on the inside thanks for the good info. But what about vinyl siding underlayment that would be between the sheeting and the siding. would this create a moisture issue with the sheeting if you have close cell on the inside of the house against the sheeting? Most of the underlayment is a R1 value.

@SprayJones

4 ай бұрын

No issue.

A vapor barrier on 2 sides of things always makes me pause because now the things can’t dry if water does get in and over 10 years water is going to get in. I had a friend spray foam their crawl space, which looks great. Then they put linoleum across the entire first floor. Is this going to be a problem if moisture somehow gets to the subfloor?

@SprayJones

4 ай бұрын

I assume you mean they sprayed the backside of the floor. No there won't be issues because who wouldn't see water on the lino? Undiscovered leaks are nearly impossible inside living spaces.

@ecospider5

4 ай бұрын

Yes the backside of the floor. Good to know. Thanks.

On the diy kits, are they just not good? I have a small room i was going to do with one, or should i look at having a company come and look at it? The room is less than 200 sqft. Thanks for any all the info you have put out.

@SprayJones

4 ай бұрын

Get a pro. They usually have a minimum charge.

@AlexeiTetenov

4 ай бұрын

I have used them successfully. If you pause for more than 15 seconds or whatever is in the manual, change out your spray head. If you don't you'll end up with too much of 1 chemical and not enough of the other. I did a small bathroom with 2 small containers from lowes.

@bowles06

4 ай бұрын

​@SprayJones Thanks, i will have one come out and see how much they will charge.

@iowac

4 ай бұрын

The problem is finding a pro that wont screw you over or create a disaster

@iowac

4 ай бұрын

For many they live in areas with few foamers with hood exp and i dont want to be their guinnea pig test learning house

I want to do a conditioned attic, but my builder is concerned about moisture retention if it’s not a vented attic. Have you seen any issues with moisture in conditioned attics?

@SprayJones

4 ай бұрын

Watch the Non-vented roof playlist, 4 part series should be first watch.

@randywoltman55

4 ай бұрын

@@SprayJonesthankyou! Love the channel.

Hi my question is we are an agricultural/shop builder in the states Iowa we have been building wood framed buildings with 2-3 inches of closed cell foam we put tyvec or a house type wrap on the exterior they are steel sheets with the tyvec between the steel sheet foam directly applied to tyvec the reason we do this is for removal of steel sheets if damaged what are your thoughts on this our foam guys never said we should not do this and never had a problem yet

@SprayJones

4 ай бұрын

No issues. Go watch my metal building playlist where we discuss wraps for post frames.

@patbrehm7574

4 ай бұрын

I will thank you@@SprayJones

@patbrehm7574

4 ай бұрын

Just watched that video answered all my questions thanks again

How much of this would also apply to Florida?

@SprayJones

3 ай бұрын

For that you need to speak with installers that are local to you in FLA.

Great video mr Jones, I have a question that I have not seen answered on your videos my question is on a 2x6 framed walls on a zip board framed house and filling the 2x6 wall with open cell foam is that still enough foam to be a vapor barrier or do I need one , this is in Texas ?

@SprayJones

4 ай бұрын

Does your code call for vapor barrier? I am assuming it doesn't. Secondly I think you are in A/C mode more than heating, so the vapor control would be external not internal.

I am going to condition my attic with ccSPF (1978 house vented attic) and have a question about ceiling penetrations in the 2nd floor ceiling. Should those be air sealed?

@SprayJones

4 ай бұрын

Are you converting this from open vented to sealed?

@perrycammisa6345

4 ай бұрын

yes, I am sealing up the attic for potential storage space. Installing a pull-down staircase for easy access @@SprayJones

@SprayJones

4 ай бұрын

@@perrycammisa6345 Then no sealing them is not much advantage other than keeping things from migrating down.

@perrycammisa2228

4 ай бұрын

@@SprayJones awesome thank you for your quick response

What if you have a roof leak, how would you know?

@SprayJones

2 ай бұрын

When and were do you want water to stop and you be dry?

Use Aluminum Double Bubble it reflects the heat back into the house or out of the house. But if you are Just going to use sheet plastic don't bother.

@SprayJones

4 ай бұрын

What are you talking about??

@johnf8877

4 ай бұрын

@@SprayJonesI think he talking about the reflective bubble insulation.

I thought you would see condensation on the outside during cold weather if there is air leakage from the warm interior to the cold exterior surface such as siding.

@Zorlig

4 ай бұрын

You see condensation on your grass in the morning, but there is no air leakage up through the ground. Condensation indicates good insulation and air control.

@SprayJones

4 ай бұрын

You need to go back to grade 10 physics class.

@SteveWH978

4 ай бұрын

@@Zorlig Thanks for the reply but I don't get your point. Moisture forms on grass when warm air cools below the dewpoint. I'm talking when it's cold and dry outside and warm, moist interior air passing through a wall and condensing onto a cold surface such as the back side of the house siding. Then dripping down the wall.

@Zorlig

4 ай бұрын

@@SteveWH978 that doesn't really happen. For example with a leaky house it's going to be very difficult to get the humidity that high. More likely condensation happens on the inside of the sheathing on an air sealed house.

Hi Spray Jones, love the videos. Just in the final stage of the build before I get the entire building sprayed in a conditoned attic setup. I have a large 10*12 foot shower/tub/wet room, with two of the four sides of the room being the exterior walls. The exterior walls are 2*8 construction and will have 4" of closed cell spray foam on them. The ceiling of the wet room will have conditoned attic space above. I was thinking of putting poly on the ceiling to control humidity from the wet room from spreading into rest of the house, and was wondering if putting poly on the two exterior walls would be a good idea or not...to act as a water barrier should my shower system (probably kerdi foam board) fail and water get past it. Technically the kerdi system itself is water proof, so water won't make it past, but just in case? Any point you think, or no point at all, even on the ceiling? Everywhere else on the house will be drywall on exterior walls and dry spaces, so no poly there anywhere... But bit confused about best approach to this wet room..

a lot of thermal bridging in those walls...

@pjevans1830

4 ай бұрын

I believe he did a video on thermal bridging and it was surprisingly minimal. Don't quote me on that, it's been awhile since I watched it.

What this tells me is don’t insulate. Just pay for the energy loss.

@SprayJones

4 ай бұрын

Sounds like a Biden idea.

@chrisnolin3039

4 ай бұрын

@@SprayJones Hey Oh!. Epic response.

Great videos and very informative. But I noticed on this video and the last one that your logo in the bottom right keeps jumping. Can you make that stop? It's very distracting.

7:26 -vapor barrier or vapor retarder?

@SprayJones

4 ай бұрын

What did I say? What is 1 perm rating? That is 60Ng

@jg413

4 ай бұрын

The older term “vapor barrier” is still used even though “vapor retarder” is more accurate.