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615 Insulation, insulation company in Nashville TN 615-431-3789
An installer in a white protective suit spraying foam onto the underside of an attic roof deck
Deep, even blown-in insulation across an attic floor with a depth marker
A warm, comfortable Middle Tennessee home at dusk
Wall cavities in a new home filled with trimmed spray foam

Spray Foam · Attic Insulation · Air Sealing · Nashville & Middle Tennessee

Insulation done right, so every room feels right all year.

615 Insulation installs spray foam, blown-in and batt insulation, seals air leaks and ducts and fixes damp crawl spaces for homes, barns and commercial buildings. Plan your project online, then we walk through it with you.

Call or text today615-431-3789
A thin, dirty attic, now deep and even, after the work A thin, dirty attic, now deep and even, before BeforeAfter
A thin, dirty attic, now deep and evenDrag the slider to compare
Spray FoamAttic InsulationBlown-InBattsAir SealingCrawl SpacesVapor BarriersDuctsEnergy AuditsSoundproofingRadiant BarrierBasementsMetal BuildingsRemovalSpray FoamAttic InsulationBlown-InBattsAir SealingCrawl SpacesVapor BarriersDuctsEnergy AuditsSoundproofingRadiant BarrierBasementsMetal BuildingsRemoval
42insulation services
28Middle Tennessee cities served
10plain-English guides
6project types in the Insulation Planner

Jobs we do

What part of your house needs help?

Tap a pick to see how we do it.

See the difference

From drafty and damp to sealed and comfortable

Drag each slider to compare. Thin attics, damp crawl spaces and bare roof decks come back sealed, deep and dry.

A thin, dirty attic, after the work A thin, dirty attic, before BeforeAfter
A thin, dirty atticAir sealed and insulated to depth
A damp, bare crawl space, after the work A damp, bare crawl space, before BeforeAfter
A damp, bare crawl spaceLiner, foam and a dehumidifier
A bare roof deck, after the work A bare roof deck, before BeforeAfter
A bare roof deckSealed with spray foam

How we get it right

A comfortable house comes from six steps done right

Most of what decides how an insulation job performs happens before any material goes in: finding the air leaks, checking moisture and ventilation, protecting the home and setting the right depth. Skipping those steps is how good insulation underperforms. Here is how we make sure yours does not.

See every service
  1. 1Inspect the houseWe look at the attic, walls, crawl space, ducts and moisture.
  2. 2Find the leaksAn infrared scan and a blower door test show where air escapes.
  3. 3Prep and protectWe protect your home, clear old insulation and set baffles.
  4. 4Seal the air leaksFoam, caulk and covers close the gaps first.
  5. 5Insulate to depthWe install the right material to the right depth.
  6. 6Test and walk throughWe measure, check and walk the house with you.

New: the Insulation Planner

Plan your insulation, then send it to us

Choose a building type, its size, your goal, the material and what is there now, then add extras and problems. See your house drawn as a cutaway with the attic, walls, floor, crawl space, ducts and air leaks marked, the insulation going in, every part explained, and the services you need.

  • Six building types
  • Four materials, four conditions and up to twenty callouts
  • A live drawing you can save as an image
  • Suggested services and project steps
Start my plan

All services

Find the service you need

42 services across five categories. Pick a tab, then a service, for details and answers.

How it works

From first call to finished job

  1. 1

    Tell us what bothers you

    Call, text or send the form. Share your city, the kind of building and the rooms or bills that bother you.

  2. 2

    We inspect the house

    We look at the attic, walls and crawl space, scan for leaks, talk through the plan and share the options.

  3. 3

    Sealed and insulated

    We seal the air leaks, set baffles and install the right insulation to depth.

  4. 4

    Tested and handed off

    We measure, check the work, clean up and walk the house with you.

FAQ

Questions, answered

What insulation services do you offer?

We install open-cell and closed-cell spray foam, blown-in attic and wall insulation, batts, rigid foam and radiant barrier, and we do air sealing, duct sealing, crawl space encapsulation, vapor barriers, energy audits, blower door testing, soundproofing, old insulation removal, pest cleanup and commercial, metal building and barn insulation. Browse every service on this site.

What kinds of buildings do you work on?

Single-family homes, townhomes and condominiums, additions and remodels, new construction, bonus rooms and garages, barns and shops, metal buildings, offices, stores and warehouses.

Where should I start if my house is uncomfortable?

Usually in the attic: seal the air leaks, then add insulation. An energy audit with an infrared scan and a blower door test shows where your house loses the most comfort and what to fix first.

Which is better, spray foam or blown-in insulation?

Each has a job. Blown-in insulation is a great way to cover an attic floor evenly. Spray foam seals air and insulates in one step, which is why it works well on roof decks, rim joists, crawl space walls and metal buildings. We recommend what fits your house.

Is spray foam safe?

Foam is installed by trained crews in protective gear while the home is ventilated, and once it has cured it is stable. We explain how long to stay out and what covering is needed where foam is exposed.

Can you insulate walls that are already finished?

Often yes. Dense-pack insulation is blown through small holes into the stud cavities, and the holes are patched afterward.

Do you remove old or damaged insulation?

Yes. A truck-mounted vacuum removes dirty, wet or pest-damaged insulation from attics and crawl spaces, and we put in clean new insulation afterward.

Which cities do you serve?

We serve Middle Tennessee, with a page for each main city on this site. If you do not see your town, call 615-431-3789 and we will tell you whether we can come out.

Can I plan my insulation project online first?

Yes. The Insulation Planner on this site lets you choose a building type, size, goal, material, current condition and extras. It draws a cutaway of the house with a callout for each area, a list of what goes into it and suggested services. You can send it to us with the form.

Request an insulation visit

Tell us about your project

Send the form, call or text. We will confirm the details and set up a time to look at your building.

Call or text today615-431-3789

Request an insulation visit

Tell us about your project. We will contact you to confirm the details and set up a time to visit.

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