First, remove as much as possible of the excess foam very carefully, then try some warm soapy water. closed cell followed by open cell The result is a more consistent temperature in your home. With SPF, we could do things size and height-wise that wouldnt be possible with an alternative insulation.. Climate Zone 6 Wall System We install foam over every type of existing roof, including metal. . It would also be much cheaper. This adds strength to the roofing system and also gives it some stability because silicone coating on its own is very slippery. Spray Foam Over Metal Roofing: Everything You Need To Know, Spray foam has an R-value of 6.5 per inch of thickness. Installation of Protective Coatings and Coverings: SPF insulation must be separated from the interior space using a qualified 15-minute thermal barrier to provide code-compliant fire protection. - Having a layer of ccSPF just seems more robust. SPF Applications for Interior Metal Building Assemblies. Roofs are complicated. And using rigid foam for dew point control is also greener than sprayed closed cell, but in new construction why use any foam at all? SPF can be used to fill and seal cracks and gaps in the panel assemblies and dramatically minimize air leakage, however there are design parameters to consider. Using closed cell foam on the under side of the roof deck is a band-aid fix to a design screw-up, not a go-to solution. Or do you have an automatic sprinkler system that soaks your siding? Agricultural facilities comprise a large portion of its projects, as spray foam is ideal for many. Akfix 820P PU Fire Rated Foam - Expanding Polyurethane Foam Insulation Spray, Excellent Fire Block Resistance for Filling, Sealing and Roofing All Gaps&Joints, Heat and Soundproofing | 1 Pack, 12 Oz. Some more food for thought. Years of Experience Is a man lift required to install the roof system? The trimmed out overspray filled an ENTIRE 10 yard dumpster. I know of a Net Zero home here in Bend, OR that used this technique. Have a metal roof thats leaking? (@ Rick Wertheim) It delivers an air-tight seal. I understand that requirement may be under threat in the legislature, but for now, good things are happening. They don't miss a lick. It's also suitable for narrow and deep joints without additional moistening. Thank you. Prior to my installing the radon mitigation system there would always be condensation on the plexiglass covers I made for plumbing penetrations in roughed in basement bathroom. Vlad Busca / Reuters All you need to do is minor repairs and then install the foam roofing system over top. At 1.5" foam you can get there with Dow Thermax polyiso, which would deliver more than R10 at tempertures that matter, despite only being labeled R9.8 @ 1.5" : http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_09ad/0901b803809ad9ca.pdf?filepath=styrofoam/pdfs/noreg/179-04015.pdf&fromPage=GetDoc, If the shiny foil facer version is used with an air gap between the siding & facer it adds well over the R0.2 needed to make it a full R10. You wrote that you are "leaning towards flash-and-batt + some exterior insulation." Closed cell spray foam is the perfect fit for this type of construction as its water resistant, and extremely efficient. Thank you! My question was in relation to this article specifically, which says that the whole wall r-value of closed cell is greatly reduced due to the thermal bridging penalty when not spraying to the face of the stud vs spraying to the face with open cell, thus making the r-value differential so small that it's worth considering if its worth the extra cost. When open-cell spray foam insulation is installed on the underside of OSB roof sheathing, the sheathing sometimes gets damp, A manufacturer of open-cell spray foam advises building officials to approve insulation that doesnt meet minimum R-value requirements, Two spray foam experts explain their preferences. Minnesota is the same - based on exterior measurements. Preparation and Priming: In some SPF insulation installations, priming of the substrate surface may be required, especially when applying foam to metal surfaces as primers can greatly enhance adhesion between the SPF and metal substrates. Houlden Contracting utilized Lapolla FOAM-LOK 2000 4G closed-cell spray foam insulation, manufactured by Houston-based Icynene-Lapolla. May 2023 in Bucharest. Where possible it's nicer to the planet to use ultra-low impact cellulose rather than open cell foam, if not cellulose, rock wool, and use caulks & tapes for air sealing. John, Can't say I disagree Amotuz, Allow the foam to expand completely and harden before you start working with it. Shop Walnut Brackets & Braces 23.08 ft. Extension Ladders 17.75 in. Houlden recently built a second facility from which to operate its business. Get building science and energy efficiency advice, plus special offers, in your inbox. (Although the article I linked to discusses rigid insulation and fluffy insulation, the R-value ratios in that article also apply to the minimum thickness of a layer of closed-cell spray foam.). SPF provides thermal, air, moisture and sound barriers, enhancing the interior comfort of the structure. Houlden Contracting Inc., Cambridge, Neb., is an insulation and roofing business with a primary focus in the installation of spray polyurethane foam. We've broken down our insulation equipment by category so you can easily build out your spray foam systems. Once the roof is properly prepared, a contractor can start installing the spray foam roofing system. However, it also represents just one of the many ways NIDA describes in which inhalants are used to produce a high, including:. These are things that more resonate with me personally rather than a general argument as to its superiority, so I don't expect it to convince anyone. This would be a much greener option (cellulose has very lo embodied energy and EPS and Polysio use a much greener blowing agent than XPS.) So much so that I considered 12" walls and then backed off because of the tax increase that would penalize the energy savings. John, The maximum value of the acoustic absorption coefficient of 0.86 is achieved by sample material 75-RPF (25% textile waste and 75% rigid . Gaps and Cracks 24 oz Spray Gun Indoor/Outdoor Spray Foam Insulation. But I have some areas that I am getting mild/mold spots on the fiberglass insulation. Table of contents Spray foam insulation cost I am reading this as an being old post but Yes to the footprint question. Open-cell spray foam has an R-value of about R-3.7 per inch, while closed-cell spray foam has an R-value that may be as high as R-6.5 per inch. Insulation performance is properly assessed by reviewing the combination of air movement, moisture control, health, safety, durability, comfort and energy efficiency with SPF scoring high marks in all categories when applied in metal buildings. Then make your decision based on what you learned about each option. The first issue to clarify: Are you really operating a "sizable humidifier"? People who viewed this item also viewed . A good rule of thumb is to get quotes for 2-3 different roofing systems. This is a very interesting analysis on the benefits of open cell foam v. closed cell on a cost basis. It can be designed out. Charlie and this seems to be supported by the observation that the condensation is only seen when it is hot and humid outside and I keep the basement at 45% RH so there shouldn't be enough moisture in the basement air to cause a build up and there is no condensation in the winter. Is anyone aware of it's efficacy or know a similar solution to prevent heat conduction through the stud ? I'm remodelling a log cabin and have a 1/2" to 1" gap (probably averaging something inbetween those two numbers) between the inside framed 2x4 wall and the interior (flat, D-log) wall. Ethan, it depends on the situation. Weve seen spray foam roofs that look like craters simply because the contractor didnt know what they were doing. Yes. Maintain Proper Temperatures: Spray foam chemicals must always be stored within the manufacturers suggested temperature range to protect shelf life and ensure application success. For better options, see this article: "How to Design a Wall.". To continue this discussion: If you add a continuous layer of R-5 insulation on the interior side of the assembly that would otherwise have a whole-wall R-value of R-12.5, you end up with a new whole-wall R-value of R-17.5. Huffing Paint. Sometimes I have to remind myself of this. A 16-ounce bottle of baby oil sells for around $2.00. Philips Norelco Multigroomer All-in-One Trimmer Series 7000. There seem to be no chemicals in spray foam that could react with steel or the galvanized protective coverings on the metal siding and roofing panels. Spray Foam Insulation is considered to be one of the most versatile forms of insulation available. They combine through a spray gun and what comes out is a liquid. 10 L/Min Professional Plastic Metal Polyurethane Manual Foam Expansion Sprayer For Glass Sealant. In most of the stud cavities the Membrain seems to do its job and after the outside humidity drops the condensation evaporates. Note that not all spray polyurethane foams require thermal or ignition barriers. The R-value is based on the air space between HY-Fi and the spray foam. If you're only getting condensation on high dew-point days it's almost certainly due to air leakage at the exterior sheathing layer. The Center for the Polyurethanes Industry (CPI) offers guidance to contractors and builders handing spray foam. With open-cell spray foam, the sides of the studs (above) are not as exposed as they are in a wall insulated with closed-cell spray foam (below), and this fact reduces the thermal bridging penalty. My next-door neighbor had trouble finding anyone comfortable working with Roxul ComfortBoard when he built last year. You're right that spraying open-cell spray foam on the underside of roof sheathing can be risky. As an insulation material, SPF is versatile, durable and lightweight. If the waterproofing on the foundation isn't up to snuff there could be a lot of moisture coming in by vapor diffusion. While SPF may be applied in numerous climatic conditions, manufacturer recommendations should always be followed. User 6997503, I dont have a general range because there are so many different variables. The outer layers are made of paper, and the core is made of Gypsum, which is usually mixed with fiber. Are there any other similar techniques ? Single-skin metal building assemblies are durable components of a building envelope, yet they offer no insulation. Foam & Sealant Products from Wildlife Control Supplies (Page 1 of 2) Foam & Sealant Products from Wildlife Control Supplies . - Every additional inch of wall depth adds to my much too high NJ property taxes. That's 700% (7x) as much polymer, for a paltry net performance gain on the order of 10%. We have seemingly biblical amounts of rain and the water table is high anyway (perimeter drain to daylight runs most of the year). In cathedral ceilings, my current instinct would be to go way overboard on the amount of closed cell foam at least towards the ridge, given the way relative humidity spikes there. Controlling the Dew Point 20.5" Closed Cell Spray Foam Insulation Replacement Head for ProCUTTER 20CCH $ 1,695.00 20.5" Open Cell Spray Foam Insulation Replacement Head for ProCutter 20OCH $ 1,675.00 27.5" Closed Cell Spray Foam Insulation Replacement Head for ProCUTTER 27CCH $ 1,695.00 27.5" Open Cell Spray Foam Insulation Replacement Head for ProCUTTER 27OCH $ 1,675.00 Even if it were entirely based on the building footprint, increasing the depth of the walls by an inch would for the average house would equate to about 12 sq. TECHNIQUE TIPS. It looked like 2x6 or 2x8 framing (I haven't found a good description online) and 2" fiberboard on the exterior. When you use open-cell spray foam, the R-value is R-8.5. In a 24 wall, the installer will usually stop at a maximum depth of about 3 inches instead of 3.5 inches, leaving the typical bumpy surface of cured foam. 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