About This Guide

The Texas Insulation Guide is an independent editorial publication about home insulation in the Texas climate. It is not a contractor and has no commercial relationship with anyone in the industry.

What this site is

The Texas Insulation Guide is an independent editorial resource about insulation, air sealing, and cooling loads in the Texas climate, with particular attention to the Rio Grande Valley and the wider south of the state.

It exists because most writing on this subject is published by companies that install insulation, and that shapes it. Not usually through dishonesty, but through emphasis: the measure that is most profitable gets discussed most, the cheap fix that would have delivered more gets mentioned least, and the honest answer — that it depends on your house — is bad marketing.

This guide has nothing to sell, which frees it to say the dull true things. Air sealing matters more than the number on the bag. The attic is where the leverage is. Windows are oversold. Spray foam is excellent and also frequently unnecessary. The cheapest bid is usually fewer inches.

What this site is not

To be completely clear, since the domain name may suggest otherwise to anyone arriving from an old link or a search result:

• This is not a contractor. We are not an insulation company, a spray foam company, or an installer of any kind.
• We install nothing. We do not insulate, air seal, spray foam, or perform any service on any property.
• We give no quotes and no estimates. There is no pricing here, no bidding, no booking, no scheduling, and no form to request work.
• We are not affiliated with any company, contractor, manufacturer, or brand. Nobody sponsors this site. No company is named, recommended, or promoted anywhere on it — deliberately.
• We do not sell leads. Your details are not collected and not passed to anyone, because there is no one to pass them to.

If you found this domain looking for a business that previously used it, this site is not that business, is not a successor to it, and has no connection to it. We cannot forward messages or enquiries, and we have no information about any prior owner of the domain.

Editorial approach

No brand names. Where a product category matters — closed-cell foam, a radiant barrier, blown cellulose — we describe the category and what it must do. We do not name manufacturers or products. A guide that names brands stops being a guide, because the reader can no longer separate the technical recommendations from the commercial ones.

No prices. Cost depends on your house, your region, your access, and current material prices. A figure published on a website is at best useless and at worst an anchor that distorts your reading of a real bid. We write about relative cost — what tends to be expensive, what tends to deliver disproportionately — and leave actual numbers to actual bids.

No guaranteed savings. We do not publish payback percentages, because nobody can produce one honestly without examining a specific house. Anyone who quotes you a savings figure before looking at your attic is marketing.

Only what is true. Where recommendations are set by authorities that revise them — DOE recommended levels, local code adoption — we say so and point you to the authority rather than publishing a number that may be stale. Where the correct answer depends on assembly design, such as unvented attics, we say that it requires design rather than offering a rule of thumb that could cause moisture damage. Where manufacturers specify conditions, such as foam re-occupancy times, we defer to their instructions.

The climate is the point, not a footnote. A great deal of insulation advice is written for heating-dominated climates and applied here unchanged. In South Texas the load is cooling, the attic is the front line, humidity is half of comfort, and radiant gain is a first-order factor. Where that changes the answer, we treat it as the main point.

Limitations

This is general educational information, not professional advice about your specific property. Houses differ, jurisdictions differ, and no website can see your attic. Nothing here is code guidance or engineering advice. For code and permit questions, ask your local building department. For what your particular house needs, an energy audit will tell you more than any article — including this one.

We aim for accuracy and correct things when we find them wrong. Codes, recommendations, and products all change.

The guides

• Insulation in the Texas climate — why it is a cooling problem, what insulation does, where homes lose the most.
• Spray foam explained — open-cell versus closed-cell, where each belongs, air sealing, curing and install quality.
• Attic insulation — radiant barriers, vented versus unvented attics, ducts in hot attics, materials compared.
• R-value explained honestly — what it measures, what it ignores, and why more R alone fixes nothing.
• Cutting cooling bills — the real order of operations, humidity, and the energy-audit idea.
• Choosing an installer — verification, written scope, thickness, red flags.