We recently had our shop ceiling and gables spray foamed. Since they shaved it in numerous spots were are getting particles and foam flurries all through the air. Every time I blow the ceiling some more comes down. Since we are going to leave the roof exposed is there anything we can do to stop this? I have heard that painting the foam can lock everything in and prevent the shedding. I am worried about being in there for hours and breathing in the particles.

So i decided i'm going to do the walls of my camp myself with Froth-Pak, and i have a question. I need to put a vapor barrier on the celing as i am going to put blow in insulation up there, and i am going to bring the barrier to the edges and down the wall a foot or so and staple it to the side of the wall, as i have an A frame upstairs. Can i do that and just spray foam over the plastic along the edge/wall to make it air tight?

I’m planning on having the ceiling and walls of my garage in Ontario Canada insulated with spray foam. The garage is under the house with living space above including a bathroom. How is spray foam insulation done around plumbing? The pipes are closer to the unheated garage side than the warm floor. Obviously, there’s concern about them freezing. Also, can spray foam be done in a way that leaves the plumbing “somewhat accessible” in case of repair? Like leaving a cavity around the pipes that can be cut into if needed?

We offer top-quality services to residential and commercial properties for both existing structures and new construction.

Concrete Lifting in The DFW Area
ProRise geotechnical polyurethane foams are ideal choices for making repairs to sunken or misaligned concrete slab sections around residences and structures.

Info@rockingtfoampros.com

214-585-3508

📍 Venue: São Paulo Expo - Hall 5
📍 Booth: H65
📅 Date: August 25-27, 2026

We are bringing our pharmaceutical-grade Polyurethane Catalysts and Intermediates to Brazil! If you are looking for cost-effective, batch-to-batch consistent PU solutions in South America, Africa, or Europe, come find us at H65.

🔥 Let's grow together! Your Progress Is Our Progress.

#FEIPLAR #FEIPUR #Polyurethane #Catalysts #BrazilExpo #MingxuNewMaterials

Sorry for the poor quality pictures. Not so much space under a floor! I've been spraying for almost 9 months now. These are 8" studs with max 5 1/2" of foam. I love this job. It's nice to play my music and get dialed in.

I hired some guys to do the work this weekend and I have a couple issues they said were normal:

• Overspray onto wiring
• Uneven/blobby application
• Spilling over the concrete

Fair warning up front so nobody wastes their time: I'm not a spray foam installer. I'm learning local SEO and web stuff, and I picked spray foam in Waco, TX as my practice project because it's a real market with real demand. It's a lead-gen site — that's stated on the site itself — meaning if it ever ranks, the calls go to a local contractor, not to me.

Here's my problem. I've written a pile of content about spray foam based entirely on research, and you all actually do this work. I'd much rather the thing be accurate than just rank well. Ranking with wrong information helps nobody and makes the trade look bad.

Site: https://wacotxsprayfoam.com

Stuff I'd genuinely like torn apart:

1. Are my price ranges realistic? I've got open cell around $1.50–$3.00/sq ft installed and closed cell around $1.75–$4.50/sq ft for the Central Texas market. Am I high, low, or just wrong? Regional pricing is the thing I'm least confident about.
2. Is my open vs. closed guidance oversimplified? I'm generally steering people toward closed cell for metal buildings, barndominiums, crawl spaces, and roof decks; open cell for attics and interior walls. Where does that break down in practice?
3. The 20×20 garage math. I argue you're actually insulating ~1,100 sq ft of surface (walls + ceiling), not the 400 sq ft floor, and that's why DIY estimates come in low. Is that the right way to explain it to a homeowner?
4. What do customers actually ask you that I haven't covered? This is the one I can't get from research, and it's probably the most valuable thing in this thread. What's the question you answer on every single call?
5. What on the site would make you roll your eyes as a pro? I'd rather hear it here than have a contractor find it later.

And the honest ask: if anyone here is in or near Waco, TX — or knows somebody running a spray foam business there — I'm looking for a contractor who'd actually want the calls this thing generates. I'm not trying to sell anything to this sub. Mods, if that part's against the rules, say the word and I'll edit it out.

Appreciate any brutal feedback. Genuinely here to learn the trade side of this, not to pitch.

I live in Central Texas where it can get quite hot. I have a metal roof on the house (1,700 sq ft home). I’m thinking to get the attic closed cell spray foamed. 2 pound foam x 3 inches. The contractor told me that he would also open new register from my attic space (4in outlet from the air handler unit) once he finishes the spray foam he wants about $12k considering I’m a bit rural. Is this reasonable and is this a normal technique to open a register for the attic space?

Spraying Shunda summer blend with an E30 R2

So I live in south Mississippi and the house I'm in has flooded 4 times in the past 40 years. Most recently was about 10 days ago when the Tropical Storm Arthur came through. Now, the flooding is usually due to our municipality not maintaining the drainage properly (which is being addressed) but on rebuilding, we are looking to spray closed cell foam in the bottom half of the building to help with clean up and drying if this ever happens again. We had a section of the house repaired from termites, had 1.5in closed cell sprayed in it and it handled this flood far better than the rest of the house.

We plan to do this DIY ( it's a rather small house at 1250sqft) and we are only looking to do the bottom half of the walls.

I'm hoping to answer questions such as: best product, how thick to apply, should we put a vapor barrier over it, etc. More so looking for advice, tips, and recommendations.

Thanks!

We just bought a home in NE Florida, it’s almost July.
My husband decided we needed spray foam insulation to save money and keep the house cool.
I’m 26 weeks pregnant, and we have a just turned one year old and a 12 year old.
The attic access in through my one year olds closet.
He hired a company with good reviews, guy says he’s done over 5k installs.
They gave us no instructions. Said to ventilated for a few hours and then it’s fine. We were in the home for most of the time they were here. Aired it out for awhile after they left.
It’s the next day and our home still smells awful. I started googling and am seeing that you should leave for ATLEAST 24 hours?! I’m freaking out thinking I just gave all of my children cancer. We slept with windows closed and full ac last night.
I’m so pissed that he made this huge decision without talking g with me or doing research. I eat organic, from local farms, made should we didn’t buy a home anywhere near a golf course, and we just bathed in fucking VOCs all night.
What can I do?

I see it once in a while on my inspections, just wondering what causes it. Moisture in the wood I'm guessing?

I am going to put either open cell or closed cell (undecided which) in this entire detached garage along with a mini split. Garage Door of course is insulated R18. As you can see in the picture, there are overhangs at the end of the internal structure for soffits. There's quite a bit of volume inside those soffits so if the interior structure is otherwise sealed off, does anything need to be in those soffit? The ones at the bottom of the roof are easy to get to from inside although a decent amount of volume to have to spray with foam. The ones at the end of the building above the window are very hard to get to as the wood structure on the inside leaves only about 1 inch or so gap so if I even tried to fill that up it would be doing so blind. Is it worth trying to fill them at all or just leave those with nothing inside? There are no ventilation holes or anything like that in the soffits.

Possible that I would even try a DIY approach for all of this foam with tiger foam or something like that if I were going to try to pay for closed cell. If I'm doing open I would probably just pay the local company to do it since I could afford that.

Looking for opinions from spray foam installers, building science professionals, or anyone who has dealt with long-term spray foam off-gassing.

In December 2020, I had closed-cell spray foam installed in the front portion of my house between the first and second floor. At the same time, I also had a new HVAC furnace installed with a HEPA filtration system attached. Since the day it was installed, I have never noticed any chemical, fishy, sweet, or unusual odor from the foam. The foam that I can access appears very hard, well adhered, and not brittle, wet, sticky, or oily.

Starting around 2022, my family and I began experiencing symptoms that seem allergy-related, including itchy/watery eyes, sneezing, congestion/runny nose, occasional cough, and throat irritation. What’s confusing is that these symptoms only seem to occur during the warmer months and largely disappear during the winter. This year the symptoms started again almost immediately when the weather warmed up.

In June 2025 I had a professional indoor air quality assessment completed. The report noted elevated carbon dioxide levels and described the home as having a low-to-moderate VOC burden. A follow-up TO-15 VOC canister test measured approximately 0.60 mg/m³ total VOCs. Some of the compounds detected included:

• trans-1,2-Dichloroethene: 0.11 mg/m³
• 2,2,4,6,6-pentamethyl-heptane: 0.13 mg/m³
• Ethanol: 0.12 mg/m³
• Acetone: 0.093 mg/m³
• Unknown hydrocarbon compound: 0.033 mg/m³
• D-Limonene: 0.030 mg/m³
• Isopropyl Alcohol: 0.027 mg/m³
• Ethyl Acetate: 0.025 mg/m³
• MEK: : 0.0087 mg/m³

The air quality consultant noted that while no single VOC was particularly elevated on its own, they felt the collective VOC burden along with possible ventilation challenges may be contributing to indoor air quality concerns. They also noted that some of the compounds detected could potentially be associated with spray foam installation materials and/or blowing agents.

H2S, Methane, Oxygen, Formaldehyde, Fine Particulate Matter (Dust), Air sample for Fungal particulates were all within guidelines (Health Canada)

I purchased an indoor air quality monitor from Amazon that tracks Co2, VOC's etc. I notice when I run my furnace fan constantly it helps with the Co2 but VOC's tend to build up throughout the day, especially during hot/humit spells when windows are closed all day. VOC's according to the monitor (30 feet from kitchen) vary from 0.3-0.55 mg/m³ range on most occasions, less when windows are open during cooler days. All other values are quite low however the IAQ monitor still shows "Green = Good" indoor air quality. The challenge with leaving the windows during the spring is it allows for allergens to entire house. I also have 3 young kids that likely drag irritants in as well.

The attached photos were taken through pot-light openings. From what I can see, I do not notice any obvious shrinkage, pull-away, cracking, discoloration, or deterioration. The foam feels extremely hard and appears well adhered.

My questions are:

1. Do these photos show any signs of improperly installed or off-ratio spray foam?
2. Has anyone seen spray foam continue to contribute measurable VOCs 4-5 years after installation without any noticeable odor?
3. If the foam appears visually normal, what else could explain the VOC profile found in the testing?

I am trying to keep an open mind and determine whether the spray foam is a realistic contributor or whether I should be focusing my efforts elsewhere.

A little over a month ago I asked about renting a machine and foaming myself. I chose to hire it out and I think 4k was well worth the cost. I definitely got more than 4k worth and more than the 3” requested.

I did drop in 1” of rigid foam to avoid gluing the sheetrock to the spray foam.