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TWO BASIC TYPES OF SPRAY FOAM INSULATION
1-part foam:You have most likely seen and maybe used this type of spray foam.It come in small pressurized cans sold at stores .Single-component foam is very sticky and expands at different rate depends on the type you use.This is used to seal gaps and insulate your home,insulating foam sealant.
2-part foam:If you are planning on insulating the entire masonry wall cavity foam then 2-part foam is the way to go. This type of foam comes in two separate pressurized metal container.The foam is collected from the sepatate containers an pumped up separate tubes.It is not until the nozzle that the two components(resin &catalyst) are mixed together.The resulting chemical reaction causes the materials creafoam.
So you get the actual insulation quality foam that has the highest R-value per inch than any other commonly used insulation an never shrinks or settles its the life time of quality an savings on cooling an heating as well keeping your air in side the building.
B&B FOAM INSULATION.LLC