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Notes from the rig

Things we explain on site every week, written down. No sales pitch, just how buildings behave on the Gulf Coast and what foam does about it.

Attic roof deck insulated with spray foam
Attics

Why your Houston attic hits 140 degrees, and what that costs you

A vented attic in a hot humid climate is a design borrowed from somewhere else. Here is what actually happens up there between noon and six, and why your ductwork pays for it.

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Closed cell foam sprayed on a corrugated steel wall Materials

Closed cell or open cell: how we choose on the Gulf Coast

Six questions we ask about the assembly before we pick a foam, and the three cases where there is no choice at all.

Read the post Foam sprayed between purlins on a metal roof deck Metal buildings

Your metal building is not leaking. It is sweating.

Water on the floor after a clear night is condensation, not a roof leak. Here is the physics and the two inch fix.

Read the post Forty foot shipping container insulated with closed cell spray foam Containers

Insulating a shipping container in Houston: what works and what fails

Rigid board, batts and blankets all fail in a container for the same reason. What we spray instead, and at what thickness.

Read the post Crew member spraying foam inside a commercial metal building Process

What spray foam day actually looks like at your house

Prep, ventilation, the smell, when you can come back in, and the questions worth asking any contractor before they start.

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