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Guide to Insulation: Spray Foam

      Made from polyurethane, this product reduces air leakage better than any other type of insulation. It fills the nooks and crannies of unusually shaped building cavities easily.

      There are two main types of spray , which has a density of about 1⁄2 lb. per cu. ft.; , which has a density of about 2 lb. per cu. ft. The higher the density of the foam, the greater the R-value per inch.

      The two ingredients used to make spray foam—conventionally called the “A” and “B” components—are mixed on site using special equipment mounted in a trailer or truck. Heated hoses convey the chemicals to a mixing gun that sprays the chemicals on the surfaces to be insulated. An exothermic chemical reaction begins as soon as the chemicals are mixed; the liquid mixture foams, expands, and eventually hardens.

      open-cell foam

      open-cell foam

      开孔泡沫的低密度使它relatively vapor permeable (a 3-in.-thick layer of open-cell foam has a permeance of 16), so when it’s used to create an unvented conditioned attic in a cold climate, the interior face of the foam should be covered with a vapor retarder. This can be accomplished by spraying the cured foam with vapor-retarding paint.

      Open-cell foams use water or carbon dioxide as the blowing agent. Some open-cell foams are made in part from bio-based raw materials—for example, soybean oils—in place of a portion of the petrochemicals. Like closed-cell foam, open-cell foam creates an effective air barrier.

      Unlike closed-cell foam, however, open-cell foam absorbs and holds water, has a lower R-value per inch, and is vapor permeable. The permeable nature of open-cell foam can be a virtue or a drawback, depending on the application.

      close-cell foam

      close-cell foam

      Closed-cell spray foam is the most expensive residential insulation. When installed well, however, it performs better than any other insulation. It is an excellent air barrier, is impervious to moisture, and is an effective vapor retarder. Because of its density and gluelike tenacity, it also adds structural strength to a wall, ceiling, or roof assembly. To seal air leaks in retrofit applications as well as new construction—for example, at rim joists or the attic side of partition top plates—closed-cell spray foam is an extremely useful material.

      Many green builders avoid the use of closed-cell spray foam because the blowing agents in most types ofclosed-cell spray polyurethane foamare hydrofluorocarbons (HFCs) with a high global-warming potential.

      Below DP-FA50 ismachine for open-foam / cell-foam spraying.

      machine with heating system, max. 80 C degree heating temperature. mixing raito: 1:1 or 1:2 (optional)

      DP-FA50 polyurethane foam sprayer insulation sprayer

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      FAQ regarding our business

      Q1:'s your MOQ minimum order quantity for formal order?

      A: Our MOQ is 10-100 units depends on the model. For small pump or spray guns , the MOQ is 100. and for large capacity pump, the MOQ could be 10. We can accept 1 or 2 units for sample testing order.

      Q2: What's your payment terms?

      A: We could accept L/C, T/T and Paypal or Western Union, also accept the payment against B/L copy . We can offer credit payment term for our long year cooperated representatives.

      Q3: What is the lead time?

      A: Sample order: 3-5days, mass production 20-40 days for the formal order.

      Q4: Can we put our logo on your products? Is there extra charge for it?

      A: Yes, we accept the OEM order based on the order quantity. The color box package need extra cost for less container order.

      Q5: What's your warranty?

      A: our warranty is 12months limited warranty except the easily worn parts. and for the motor we offer 2 years warranty.

      Q6. Which port do you ship your machines?

      A: We ship from Ningbo port China. for the FOB price, we will bear the local freight charge and the forwarder fee / customs fee, and all the shipping cost / insurance cost / forwarder cost at destination port / import duty tax ... all will be beared by the buyer (or importer).

      Q7. how can i buy your products?

      A: if you're final user, please leave your mobile phone number to us, and we will ask our distributor / dealer to call you directly. if you want to be our distributor or representative, welcome to contact us by email or whatsapp. we can talk more details one by one, we're sure you would be satisfied with our quality / service and price.


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