But, in the summer this direct absorbtion of solar radiation in the room is a negative and its a big part of summer heat gain for windows that get a lot of direct sun. In the winter, this direct absorption of solar radiation is a good thing in that its free heat gain - its one of the nice features of bubble wrap that it allows the sun to shine right through it and get beneficially absorbed in the room. But, heat gain also comes from the sun shining right through the window and the bubble wrap and then being absorbed when it hits a surface in the room. The bubble wrap adds insulation, so just as this added insulation helps to reduce heat loss from the warm room to the cold outside in the winter, it also helps to reduce heat gain from the hot outside to the cool room in the summer, and that is good and helps the room run cooler. The answer is that it does help some, but there are probably better approaches. There have been a few questions on whether bubble wrap is effective in reducing unwanted heat gain in the summer. However, experts claim that it pays off in the long run. In comparison, closed-cell foam is much denser, with its R-value close to R-6.2. Between the two, open-cell foam is less dense an R value of around R-3.7 per inch of thickness. Similar to bubble wrap, spray foam is of two types: open-cell foam and closed-cell foam. Spray foam insulation is simply sprayed inside a gap where it expands and hardens, filling the gap. Made of polyurethane foam or liquid latex, spray foam insulation is designed to cover crevices and gaps within walls or other surfaces. The second type is known as bubble reflective insulation and includes 2 layers of low-emissivity, metalized surfaces. The first is often termed bubble white and carries polyethylene bubbles between a layer of white polyethylene and another layer of the metalized low-emitting exterior. Single bubble insulation comes with a layer of bubbles encapsulated between the outer layers whereas double bubble insulation has 2 sheets of bubbles.Įxternal layers are available in two different kinds too. As you can guess from the names, the difference lies in the layers of bubbles. It is available in two variants: single bubble and double bubble. This radiant barrier can decrease radiant heat, maintaining a comfortable temperature in your home, warehouse, pole barn, or office.
0 Comments
|