Oklahoma's first capital

Spray Foam Insulation in Guthrie, OK

Careful insulation for historic brick and frame homes.

Free on-site estimates
Written quote listing material, thickness and R-value for each area
Attic leaks, ducts and roof stains checked before anything is covered

Old Houses Need a Careful Plan

Spray Foam Insulation in Guthrie means working with history. Guthrie was the territorial capital and Oklahoma's first state capital, and Wikipedia says its historic district includes about 2,169 buildings across 1,400 acres and 400 city blocks, the largest urban historic district in the state and a National Historic Landmark. Because the city's growth stalled after the capital moved, much of its Victorian and early 1900s housing survived. Its population has stayed near 10,000 since 1900.

What old houses need

Homes over a hundred years old were built without insulation, with plaster walls, balloon framing, tall ceilings and attics that may have been added to many times. They are also built to breathe, and insulating them carelessly can trap moisture. We start with the attic, sealing gaps and chases and adding insulation, and look at walls more carefully, checking for moisture before recommending dense-pack or foam.

Spray foam in historic homes

Spray foam has its place in old houses: on kneewalls, in additions, on the underside of a roof that is being replaced and in rim areas. Closed-cell foam is hard to remove, so we avoid using it on original materials that might need future repair. We explain the trade-offs before you decide.

Rentals

Wikipedia reports that 44.4 percent of Guthrie's occupied homes were renter-occupied in 2020, and 11.6 percent of housing units were vacant. Many older homes are rentals, and attic sealing plus blown-in is often the most useful upgrade for them.

Brick and stone

Guthrie earned the nickname Queen of the Prairie for its brick and stone construction, according to Wikipedia. Solid masonry walls behave differently from framed walls: they hold heat, and they rely on drying to stay healthy. We do not usually recommend filling the cavities of solid masonry homes. Instead, we focus on attic sealing and insulation, which is where most of the gain is, and on rooms or additions with framed walls.

Climate and code

Guthrie's July average high is about 95.5F and its January low about 24.6F, per Wikipedia. Logan County is in Climate Zone 3A. Get a free estimate

What to Know in Guthrie

Historic district. The Guthrie Historic District covers 2,169 buildings across 1,400 acres and 400 blocks, the largest urban historic district in Oklahoma, and is a National Historic Landmark (Wikipedia).
Stable population. Guthrie had 10,006 residents in 1900 and 10,749 in 2020 (Wikipedia census table).
Housing. The 2020 census counted 4,748 housing units, 11.6 percent vacant, with 55.6 percent of occupied homes owner-occupied (Wikipedia).
Climate. July mean daily maximum 95.5F, January mean daily minimum 24.6F, and about 32.9 inches of rain a year (Wikipedia).

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Guthrie Questions

Is it safe to insulate the walls of a 100-year-old Guthrie house?

It can be, but moisture is the risk. We check for leaks, damaged siding or masonry and flashing problems first, and recommend materials that suit the wall.

Should I use spray foam in my historic home?

In some places, like kneewalls, additions and a roof deck being replaced. On original materials we usually prefer options that can be removed later.

Do you work in Guthrie's historic district?

Yes. Most insulation work happens inside the house. If any exterior work were involved, check with the city first.

Can the walls of a brick Guthrie home be insulated?

Solid brick walls are usually best left alone, since they need to dry. We focus on the attic and any framed additions, where insulation helps most without moisture risk.

Free Estimates in Guthrie, OK

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