muntin (mun'-tin): A thin framing member that separates the panes of a window sash or glazed doors.
Muntin tape is used to permanently adhere external muntin bar to glass. External muntin
provides the familiar look of a divided light window or door but with the energy
efficiency of modern double or even triple pane glass. It's cheaper than actually
framing individual windows and less prone to failure as there's only one glazing
seam for the entire window, rather than one per frame. With an external muntin bar on both
the outside and inside, utilizing black or charcoal tape, you virtually can't tell
This is a highly engineered product, designed to work with a multitude of muntin bar materials
(from Kynar© painted aluminum to untreated wood) and glass surfaces (including
most of the new 'Self-cleaning' or 'Easy-to-clean' products).
Unlike competitive materials, LAMATEK's muntin tape does not require toxic silane
pre-treatments to perform as advertised.
When looking for a muntin tape, regardless of the manufacturer, be sure to get test results
for the product in this specific application. Later, you'll be glad you did.
For additional information you can view the following documents:
Muntin tape can typically be applied by the muntin bar manufacturer, and if it's an option for you
it's an excellent way to go. However, muntin tape can be applied in
any dry, clean and temperate environment. To properly adhere muntin tape to either muntin bar
or glass, it is required that you can provide a minimum 10 psi (pounds per square inch) of pressure,
and a way to measure it.
When applying to bar in low volumes, a good method is a tape roller like the one pictured below:
Muntin tape is supplied in slit width rolls on a 3" ID core tube. Widths can range anywhere from
.125" to 4", but typically should be .032"-.062" more narrow than the bar you are applying it to.
LAMATEK's muntin tape is manufactured from a special tape grade polyethylene foam, designed
specifically for adhesive bonding applications. The adhesive is a proprietary compound
engineered for it's bonding strength to glass and other surfaces without the need for
typical surface pre-treatments.
Unlike most other muntin tapes, LAMATEK's muntin tape is available in a selection of three colors,
light gray, charcoal grey and black.