Utilizing our pure advanced MicroSealant, sandwiched between two removable protection layers, DoubleStick is sticky on both sides. It is perfect for use as a gasket when installing windows and vents on RVs, mobile homes, steel buildings, etc. DoubleStick is also the perfect lap adhesive. Once DoubleStick is applied, you can virtually forget about leaks! In addition, DoubleStick can be folded or rolled into a bead, and it can be used as a moldable sealant to fill gaps and holes or gasket around wall penetrations to keep debris and pests out.