insulate against

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insulate someone or something against someone or something

 and insulate someone or something from someone or something
to protect someone or something against the effect of someone or something. Use an extra blanket to insulate the baby against the cold. John is a bad influence on the children, and I've taken care to insulate them against him. We insulated the children from the effects of John and his bad habits.
References in periodicals archive ?
Single pane glass may keep out the weather but it does little to insulate against heat loss or reflect the sun's heat that can cause overheating.
You should also insulate the cold water cistern and the small feed-and-expansion tank (if you have one.
When you go out in the cold, you have no fur to fluff up to insulate yourself.
In fact, carbon-based aerogels made with resorcinol-formaldehyde can insulate better than any other material known, Xianping Lu of the University of Wurzburg in Germany and his colleagues report in the Feb.
New glass will insulate in the range of R-5 to R-8, (R being a measure of insulating performance--the higher the number the better the insulation performance) and disproportionately impact overall building energy efficiency.