My house in Northern NJ has a room with a big window (45.5" x 45.25") frame
containing two side-by side windows that face the south. Currently this
window frame has aluminum mini blinds mounted outside the frame covering the
entire frame. If the door to the room is closed during a sunny day, and the
blinds are completely shut, the room can still get into the low 80s even if
it's only 55 degrees outside. This has been happening on sunny days since
I've purchased the house in the middle of October.
The problem is that, even if the aluminum blinds are closed, heat from the
sun is accumulating on the inside of the window frame and getting into the
room, since the blinds allow the heat to easily get through the slats, etc.
I've already applied a do-it-yourself tinted window film to the inside of
the glass, and the improvement was hardly noticeable.
Since the window film did not help much, I'm considering getting Honeycomb
pleated shades. Honeycomb pleated shades are touted as being helpful toward
preventing heat from getting into the room. Will honeycomb shades REALLY
help solve this problem or are they a waste of money?
If honeycomb shades are REALLY going to help, then one choice would be
triple-cell "light filtering shades", which have three 3/8" cells, and are
touted as having a high r-value and a summer shading coefficient of .24.
These would cost me around $160 which seems like a lot of money for a shade,
but if this will REALLY help, then it would be worth it..
Another option is to purchase a 3/4" single-cell blackout shade by the same
manufacturer, which supposedly has a summer r-value of 4.35 which, although
hard to believe, may even be higher than the triple-cell which does not
even have a published "summer r-value" on the web. (by the way, both these
shades have a published WINTER r-value, and I don't understand why the 3/4"
single-cell would have as slightly better WINTER r-value than the
triple-3/8-cells). Anyway, this shade would cost around $100. However the
shading coefficient on this one is said to be .36 which is not as good the
(Will these shades really stop the heat from getting into the room, or will
the heat just get through the gaps on the sides? Are the r-value and summer
shading specs just a bunch of hype?)
Should I purchase the single-cell blackouts for around $100, or go "all
out" and get the triple-cell light filtering for $160, or would either of
these two choices just be a waste of money?