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I don’t think I have any wall insulation. How do I find out?

The easiest way to check if you have insulation in your walls is to remove an outlet plate on one of the exterior walls and look into the wall cavity with a flashlight.

Can I have RetroFoam™ installed from the exterior on part of the house, and then some installation completed from the inside on the remainder of the house?

Yes! Our home insulation contractor will work with you to suit your particular needs.

How frequently spaced are the injection holes?

This will depend on the age and/or construction of your house, and will be discussed with you at the time of quotation.

How does the RetroFoam™ home insulation contractor know when a wall cavity is completely full of spray foam?

The unique nature of RetroFoam™ – it’s the consistency of shaving cream when injected – allows it to flow around any obstacle – like water pipes and wiring – without getting caught up while still filling the entire cavity. Your licensed RetroFoam™ installer is a professional and will apply a combination of techniques, including timing the cavity fill, methodical placement of the insertion holes, and ensuring that the cavity is full by putting back-pressure on the insertion hole.

If RetroFoam™ contains water when it’s first installed, where does it go? Will it damage the walls?

The initial water content of the spray foam is about 4% by volume. This percentage is too low to affect the structure of a building. The partially open-cell nature of the foam means the insulation dries out quickly. Once dry, RetroFoam™ resists re-absorption of water. It’s possible that mold will form as mold can occur whenever wetness gets trapped inside a wall, but usually the spray foam dries out before this happens. However, if mold forms, Insulguard or MoldProof can be added to the foam to kill any existing mold and prevent any future problems that might occur.

Is it safe to fill the cavity of a brick veneer home? Does there need to be a ventilation space between the brick and the wood framework?

A common misconception about brick construction is that the gap between the wood stud and the brick surface is specifically there for ventilation. In reality, the primary purpose of this gap is to keep the moisture that is traveling through the brick, which is porous, from touching the wood and sheathing. If the wood is in contact with brick, it will absorb moisture and this will cause the wood to rot. RetroFoam™ is breathable, but also repels water. The spray foam fills the whole cavity space, providing a suitable thermal barrier without transferring moisture to the wood.

Will installation be a disruption in my home?

There is very little disruption to the household during the RetroFoam™ process. Installation typically takes 1-2 days to complete.

Will RetroFoam™ cause a fire hazard in the walls?

No! RetroFoam™ has a Class I fire rating, which means it’s non-combustible. Even in intense heat, RetroFoam™ will not burn or melt (however it will char, lose weight, and disintegrate).

Does RetroFoam™ corrode the plastic coating on the electrical wires inside the walls?

No. Unlike some plastics, RetroFoam™ will not react with plastic-coated cabling or wiring.

Will RetroFoam™ cause dampness?

No. RetroFoam™ is hydrophobic, meaning it sheds water rather than holding it. Even when immersed in water, RetroFoam ™ absorbs only a small amount of water, which quickly evaporates when the spray foam is removed from the water. As with most insulation materials, RetroFoam™ will become waterlogged when exposed to water over a long period of time.

Will RetroFoam™ shrink and deteriorate with age, thereby losing its insulation properties?

To a small degree. Some initial shrinkage is normal but investigators have determined that RetroFoam™ maintains its physical and insulation properties. In fact, 15 and 20-year-old spray foam has been found equivalent in insulation performance to new foam.