Spray Foam Insulation in Frisco, TX

Frisco had about 33,700 people in 2000 and just over 200,500 in 2020, and roughly four of every five homes in the city were built since 2000. It’s still building. On the north side, Fields covers more than 2,500 acres between Panther Creek Parkway and US 380, with new neighborhoods going up around PGA Frisco. That gives insulation in Frisco two sides: making fairly new houses comfortable, and getting houses under construction right before the drywall closes the walls.

Homes in Frisco

Most Frisco houses went up in the 2000s and 2010s, built the way Texas houses usually are: on a slab, with the air handler and ductwork in a vented attic above the ceiling insulation. Newer doesn’t mean cooler upstairs. That attic can still pass 130°F on a summer afternoon, and in a two-story house the bedrooms share a ceiling with it while the ducts that feed them run straight through the heat.

Open cell foam on the underside of the roof deck, about 5.5 inches for roughly R-20, turns the attic into part of the conditioned space. The ducts and air handler stop working in 130°F air, and the upstairs ceilings stop soaking up attic heat. If the existing insulation on the attic floor is clean, it can stay where it is. If it’s dusty or rodents have been in it, we can take it out first. Our attic spray foam page covers the whole process. If your furnace or water heater runs on gas and lives in the attic, we check that before anything else, since a sealed attic changes its air supply.

Building new in Frisco

A house under construction is the easy case. The walls are open, the roof deck is bare, and there’s no old insulation to deal with. We spray after the framing is done and the plumbing, electrical and HVAC rough-ins are in, and before drywall. Foam in the walls of the living space then gets covered by drywall like any other insulation.

For most houses we’d recommend open cell in the exterior walls and under the roof deck. It fills each cavity, seals around wires and boxes, and at about 5.5 inches on the roof deck gives roughly R-20 while bringing the attic and ductwork inside. Closed cell, at about R-6.5 per inch, makes sense where space is tight or where you want its extra stiffness and moisture resistance. Our pages on new construction spray foam, open cell and closed cell compare the options.

Tell your builder and HVAC contractor early that the attic will be sealed, since it affects how they lay out and size the system. The same goes for a production builder at Fields or a custom builder on your own lot. And if you want a garage you can actually work in, spray its walls and the roof deck above it while they’re still open. See shop and garage insulation for that.

Neighborhoods and ZIP codes we cover

We cover all of Frisco on both the Collin County and Denton County sides, including Starwood (75034), Plantation Resort (75035), Newman Village (75033), Frisco Lakes (75036) and the new neighborhoods at Fields on the north side of town.

Frisco spray foam questions

When should spray foam happen on a new build?

After framing, once the plumbing, electrical and HVAC rough-ins are done, and before drywall. Spraying earlier means other trades drilling through fresh foam. Waiting means opening finished walls. Book the free measure once the house is framed and dried in, and give us the expected rough-in date so the spray day lines up. Other trades should stay out for about 24 hours after we spray.

Our house has a second air conditioning system for the upstairs. Does that change anything?

If both air handlers and their ducts sit in the attic, sealing it helps twice, because neither system has to push cooled air through 130°F heat anymore. Insulation on the attic floor protects the rooms but not the ducts above it. Open cell under the roof deck brings both systems inside the conditioned space at once. Since the attic stops adding heat to the ducts, ask your HVAC contractor to check the system settings afterward.

Will foam lower our bill whether we’re on Oncor or CoServ?

Depending on the neighborhood, Frisco homes get power through Oncor or CoServ, and the foam works the same either way. What it changes is how hard the air conditioner works, since the ducts and air handler no longer sit in a hot attic. How much shows up on your bill depends on the house, your rate and your thermostat habits, so we don’t promise a savings number.

Does closed cell belong anywhere in a new Frisco house?

In a few spots. Where framing is shallow, such as a vaulted ceiling with narrow rafter bays, closed cell fits more R-value into the space: about R-13 at 2 inches, against roughly R-7 for the same depth of open cell. It also adds stiffness and resists moisture. For standard walls and a full roof deck, open cell usually does the job, and we’ll mark any closed cell areas on your quote.