When we used a vapor retarder primer (vapor barrier paint) in our Edelweiss LEED Platinum Demo House instead of a 6 mil poly vapor barrier, it was for the walls not the floor.As for thickness, that is what we would call a bit of a concern with using it as a vapor barrier, it is … If you're painting a wall or doing some simple effects, reach for latex. Class III – Medium permeability vapor retarders – rated greater than 1.0 perms and less than or equal to 10 perms. For open- and closed-cell spray foams, check manufacturer’s specifications. Many customers of mine who do faux finishing use this product. SPA 200 is for Stains, Acrylics and Polyurethane. With all higher density paints, it’s very important to make sure that you’re mixing your paint properly. types of paint selected were exterior soya-alkyd, exterior flat acrylic latex, and interior acrylic latex semigloss enamel. There are even some latex vapour barrier primers that will do the job. Latex painted gypsum board (one coat of latex paint) is a Class III vapor retarder. It makes the paint slightly more greasy but it makes it also glide better. Interestingly, adding a coating of moisture-barrier paint cuts the moisture permeability of the total paint coating by more than half. From contributor M: What could be happening is that the turbine heats the paint a bit and causes buildup in the tip with latex. Latex Paint Additive and Extender to improve the performance of latex and acrylic paints and reduce the appearance of brush marks. The kraft facing on batts qualify as a Class II vapor retarder. latex or enamel paint. No, Sunnyside Paint Thinner is used only with oil based paints. Urethane paint is paint created by mixing pigment with polyurethanes, which act as the binder to hold the pigment molecules together. ADD 14- 16 OUNCES OF PRE-MIXED ADDITIVE TO 1 GALLON OF PAINT Use interior and exterior. Zinsser®'s Latex Extender is a safe, biodegradable additive designed for latex paints and primers. Tip: If you find that your paint isn’t incorporated thoroughly and you’re not sure why, try using a clear cup for mixing so that you can see where there may be pockets of medium that haven’t been mixed in. Although the DOE suggests latex paint as an adequate vapor retarder in these climates (ref. Oil based paints are better for holding unto steel, metal and dirty surfaces while latex should rather be applied to clean surfaces since the paint does not stick unto dirty and chalking surface. There are a number of suggested 'alternative' retarders for acrylics circling on the internet. As per Table 1, some acceptable options that satisfy code, based on location, include vapour retardance paint with an air sealed drywall approach, or a “smart” vapour retarder. The mixture is 16 ounces of FS3 Paint Additive (as it comes in the container) per 1 gallon of paint. Latex Paint as Vapor Retarder. Latex paint will not establish a good chemical bond with plastics -- polyester included -- so a mechanical bond is important. - Doctor Faust In my years of painting I've always wondered what the hell we buy when we pay for a pot of acrylic retarder and so I sat down one afternoon and decided to do a bit of research. That's when you need to add retarder. 5607 inhibits curing and will affect adhesion and atomization if used in excess amounts. LPA 202 is for Latex Paints. Vapor Retarder Latex Paint, 0.0031 inch thick 0.45 0.002 inch Polyethylene Sheet 0.16 0.004 inch Polyethylene Sheet 0.08 0.0006 inch Polyethylene Sheet 0.06 Aluminum foil 0.00035 inch thick 0.05 Aluminum foil 0.001 inch thick 0.01 Not Vapor Retarders Perm Rating. Brad Wolf | Posted in Energy Efficiency and Durability on August 17, 2020 10:38pm Building a house for a client in Saskatchewan Canada. Generally, these retarders are glycerin or glycol-based additives. One of those recommends diluting glycerin with water then adding it to the paint. 3) It's ok to use a higher ratio of liquitex to paint (more liquitex, less paint), the consistency of the paint will be thinner, but the result will be a softer finish when they dry 4) Let it dry a full 24 hours and then use your hair dryer to heat it up and lock in the paint. With all the new products out there for latex paint, you can tackle almost any decorative finish! The thinned paint, especially being very lightly-colored, builds slowly and has a difficult time hiding contrasting features below (such as those hideous black stamps Stits puts on … Latex Extender 946ml Flow and Leveling Additive Open Time Extender. 3/8 inch gypsum Wall Board (plain) 50 4 inch Unfaced Mineral Wool 30 Glycerin May Not Be a Good Retarder for Acrylics . Add Fire Shield Paint Additive flame retardant to water based paints and stains only. These data indicate that the period covered Many brands of urethane paint are available to consumers today. retarder classes: Class Definition Examples I < 0.1 perm Sheet polyethylene, sheet metal, non-perforated aluminum foil, foil-faced insulation sheathing II > 0.1 to < 1.0 perm Kraft-faced fiberglass batts or low-perm paint, unfaced expanded polystyrene, fiber-faced polyisocyanurate III > 1.0 perm Latex or enamel paint Climate zones for Class III Vapor Retarders Can interior latex paints perform as a vapor retarder? When in doubt, tell the experts at your home center what you're doing and they'll be happy to offer advice. But since it's there already, you're good. Examples of Class III vapor retarders include latex paint, plywood, OSB, and drywall. Note:A retarder is an agent, usually added to water, used to slow the drying time of acrylic paints, giving you more time for blending or layering highlights. 5607 Retarder Water-based, additive for reducing tip-dry, primarily for use in arid environments. If a vapor retarder is used, a semi-permeable (i.e., Class III) vapor retarder on just the interior side is considered adequate. Good Luck with your project. A vapor retarder is any material that resists moisture movement at a level sufficient to comply with a specific building code or standard for moisture control. ... Can Sunnyside Paint Thinner be used for cleaning paint brushes used with latex paint? The quick evaporation of water of regular latex paint can be slow down through the utilization of latex retarders. The building is framed with 2×8 walls, will be insulated with double r14 roxul and has r12 zip sheathing on the exterior. The permeability of smart vapour retarders change with humidity — typically from one perm or less when the cavity is dry, to greater than 10 perms when the cavity is moist. Definition of Vapor Retarder or Vapor Barrier. I see various references indicating that standard latex paint on gypsum wallboard is very roughly 6 perms (dry cup). There are multiple retarder products out there, some are flow improvers as well so they make the paint a bit more watery but since I also use water I decided to pick up the Art Vallejo retarder medium which is a kind of gel. If there's wood involved, you may want to consider oil-based paint. Adding too much may reduce the depth of color. Adding a little retarder to your paint will give you more time to work with it, increasing what is called its ‘open’ time. It can be used for latex paints and primers, water reducible oil/alkyds, water-based stains, waterborne DTM finishes, water-based varnishes and waterborne epoxies. How to Make Your Own Blank Clear Acrylic Paint Medium Cheap: Hi all!Recently, after weeks upon weeks of investigation (like 5 weeks maybe) ive at last solved a huge personal problem.I sell thermochromic pigments (and other special effects pigments, materials, ect ), … I would suggest putting fresh paint over it, but more to seal any lead in, certainly where you can touch walls if not the ceiling. Golden Open Acrylics are designed to be workable for longer without adding retarder (and it has a consistency that falls somewhere between heavy body and fluid paints). Open-cell spray foam is generally more permeable. Advantages of oil-based paint vs. latex acrylic paint Oil-based paints are better stain sealers compared to latex paint where stains can easily penetrate. Semi-gloss urethane paints have been developed, but all urethane paint will have some degree of glossiness, because the same properties that make it resilient also make it reflect light. Because of a change in the 2009 IRC, Class III vapor retarders (e.g. Latex or enamel paint qualify as Class III vapor retarders. Weather conditions for the period covered by this study (November 1976 through April 1977) are shown in table 2. It is funny that the paint companies themselves back off from promising that it will do the job, only because they are not really familiar with the building code, but their technical specifications show that they have been tested to less than 1 Perm, making them a legitimate Type 2 vapour barrier. Grand Ave. Portland, OR 97214 503/233-4491 1545 Vapor-lok latex wall primer Palmer Industries 10611 Old Annapolis Rd. Frederick, MD 21701 301/898-7848 86001-Seal Vapor Barrier non-toxic modified latex primer This additive can be conveniently cleaned with simple soap and water. In talking with PaintPro, he suggests using 1 cap full per 8 ounces of paint. FOR ALL WATER BASED PRODUCTS - ALL BRANDS. This product is an additive that extends drying time in latex based paints. Similarly for exterior gypsum sheathing or fiberboard sheathing. Glidden Paint Co. 925 Euclid Ave. Cleveland, OH 44115 216/344-8000 Insul-Aid latex wall primer Miller Paints 317 S.E. The ratios for black and white paint can be applied to metallic paint as well. Just mix thoroughly and apply according to the instructions of the paint manufacturer. Examples of Class II vapor retarders include kraft-faced fiberglass batt, low-perm paint, and 1 inch of expanded polystyrene rigid foam. Best added after paint has been thinned with 4011 Reducer, and optional 4030 Balancing Clear. It allows latex paints to be sprayed with less pressure to help reduce tip clogging and piston freeze-ups. Plywood sheathing and oriented strand board (OSB) have perm values of greater than 1 perm when using the wet cup test. The propoylene glycol will act as a latex retarder and should dramatically help the flow, and the water will help with reduction, and thinning. Lacquer Retarder should be added to nitrocellulose lacquers and epoxies during periods of high humidity to prevent blushing. Add sparingly, in single drops, to reduced, airbrush paint-mixture. Paints/primers designed to be vapor retarders are typically much lower ( 1 perm).But I also see that wet cup results are much higher - 17 perms in one case and if I understand it correctly, much higher than that here.I don't see wet cup results for the low perm latex paints. Oil paint does the same job as the vapour retarder primer, it's just really nasty stuff that we prefer not to even suggest. 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