Abstract: A reflective insulative blanket for use in construction applications, such as curing concrete, thawing frozen ground and other insulative purposes. The blanket comprises at least one moisture-impervious layer attached to an insulative layer. The insulative layer includes a plurality of hollow, insulative elements. The moisture-impervious layer may close the insulative elements and/or the space surrounding the insulative elements, thereby entrapping air to provide the insulative properties of the blanket. The blanket preferably includes two moisture-impervious layers, one attached to each side of the insulative layer. The blanket further includes a reflective layer secured to the outside of at least one of the moisture-impervious layers. The reflective layer reflects thermal energy before it has passed through any portion of the blanket, thereby reducing heat retention within the blanket and improving lateral thermal conduction.