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Trending In The Aisles: J-B Weld Epoxy Putty


Epoxies unlike most adhesives use a two-part process to cure and form a bond. One part of the equation is the resin and the other the hardener. Separately neither the resin nor hardener have any adhesive properties. Once combined together and given time to cure epoxy forms a bond stronger than adhesive alone.

Most of the epoxies you will find on our store shelves are sold in syringe style packaging. The packaging internally is actually two chambers one of resin and one of hardener. When the plunger is depressed resin and hardener are released in equal measure. Once released it is necessary to mix both elements together to start the curing process.


Epoxy putty works in a very similar way. The stick of putty is still composed of a resin and hardener. The resin makes up the outside of the epoxy stick while the hardener is the core down the center. The resin and hardener will have highly contrasted colors to make mixing easier. To mix, cut or break off a portion of the epoxy stick and knead it together until the colors of are evenly blended. The putty is ready for application once the color is uniform.


One problem that can be encountered with liquid/gel epoxies is that the resin and hardener have to be mixed in a container or on another surface before application. The mixture is then moved to the problem area. In confined or downward facing spaces this can be problematic. Epoxy dripping or running before fully cured will result in a poor and possibly failed bond.

Epoxy putty has the benefit of being semi-rigid. The putty can be mixed in hand and shaped then applied to the repair area. The working or set time (how long the epoxy is malleable) varies depending on the epoxy. The semi-rigid ball of putty can be applied to an area without fear of it dripping or running.

J-B Weld putty epoxies have different versions depending on the repair and/or project you have. Keep in mind that while the epoxies aren’t single application, some do work better than others in some situations.


WaterWeld: Great for plumbing applications such as pinholes in pipe. The epoxy can also be applied and cure while in wet location or submerged under water. WaterWeld is also safe for potable water applications.


KwikWood: A more substantial patch than traditional wood putty. Kwikwood can be used to fill larger voids and then sanded and shaped, tapped or drilled. The putty once cured can also be painted to match the area around the repair.  


SteelStik: Has the fastest set time of the three putty epoxies. The SteelStik epoxy like the WaterWeld is potable water safe. SteelStik will also cure while submerged in gasoline making it especially great for automotive or machinery repairs.


Another benefit of using one putty epoxy over another is that the putty is colored to replicate the surfaces they are most likely to be applied to. The WaterWeld cures to a whitish color to match PVC. The KwikWood cures tan to match natural wood. Finally, the SteelStik cures to hard grey to blend with metal surfaces.


The J-B Weld line of epoxy putties as well our full selection of adhesives can be found online and in the paint department of your local Home Depot store.




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Posted 2016-10-21T13:44:37+0000  by Chris_HD_ATL Chris_HD_ATL
There is another product we have at stores that is similar to the Water Weld mentioned above.  It is called RectorSeal EP-200, and is also a 2 part epoxy putty you knead with your hands to activate.

Here are the differences:

The EP-200 is gray in color instead of white.
You need to dry out the leaky area before applying EP-200 for it to properly adhere
You will not find it in the Paint department, as it will be in Plumbing with the thread sealers and teflon tape.
It is quite a bit less expensive then WaterWeld.

I have used this product for many years and it works just great for patching leaks.  If you cannot thoroughly dry the area to be patched, go with the J-B Weld as it will work on wet surfaces.


Posted 2016-10-21T15:23:46+0000  by Chris_HD_CHI
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