Rope caulk is a putty-like substance that is used primarily for sealing drafts in windows or around door frames. The caulk is sold in long rope-like rolls which can be cut or torn off to the desired length. The caulk is pressed into a gap in the window pane or frame and seals the void, preventing air from passing through and increasing efficiency. Rope caulk is often easier to use than a conventional caulking gun and tube of caulk due to its ability to be pressed into tight spaces where it may be difficult to operate a caulking gun.
When applying rope caulk to a window or door, clean the surfaces of the window first where the caulking will be applied. A dirty surface can create a poor seal between the caulk and the window pane. Dirt and debris hinder the rope caulking from adhering, and the material may peel off after a short time, meaning the caulking will need to be re-applied to the window. After cleaning the surfaces, allow them to thoroughly dry before the caulk is applied.
An installation trick is to dip the rope caulk into a container of lukewarm water for a few seconds prior to pressing it into place. This creates a more pliable caulk, which is easier to press into small gaps. The caulk should not be left in the water for any prolonged period of time as the water will soon dissolve the caulk and render it useless. When using the water-dip application method, a pair of disposable rubber gloves will keep the sticky caulk from attaching itself to any exposed skin.
Temperature is the key to a successful rope caulk installation. The window should be no colder on its exterior surface than it is on its interior. Applying rope caulk to a window that is cold outside and warm inside will usually result in a failed adhesion of the caulk and an air draft. Rope caulk should be applied in the early fall months in most areas. This will allow the seal to set prior to cold weather setting in.
Available in either grey or brown, rope caulk looks great, is easy to apply and cleans up well with water. The caulking compound creates a durable seal against most types of weather when installed correctly, and will reduce wasted energy from drafty windows and door frames. Before applying, be sure to follow the manufacturer’s directions when applying this product and store or dispose of any unused materials according to the package and local specifications.
—The EnergyEarth Team
© 2013 Energy Earth LLC. All Rights Reserved.
Via WiseGEEK (edited).