Frequently Asked Questions for Polycryl™
“The Wood Fortifier”

Polycryl, is a concentrated, high molecular weight acrylic polymer that will fill and strengthen soft, spalted or punky wood. It will dry clear and will not yellow the wood. Polycryl is water-soluble and penetrates best when wood is wet. It will help make carving and turning easier by fortifying the wood. Penetration varies depending on the density of the wood you are treating.

Since Polycryl is water-based, treated wood needs to be finished so the product will not wash out.

Polycryl should be diluted with hot tap water and brushed on or the wood can be immersed (soaked) into a solution of Polycryl.

When the Polycryl treated wood has dried, the wood can be glued or finished with various finishes. Easy soap and water clean up.

The following are some of the most common questions and answers relating to the use of Polycryl.

Polycryl can be cleaned off/up with soapy water, Solvitol, or any mineral solvent.
Polycryl has an indefinite shelf life.
No, freezing will not harm Polycryl. Be sure to bring the Polycryl back to room temperature prior to using. Note: the wood should also be at room temperature when treating, to insure proper penetration.
Yes, the Polycryl left from soaking can be reused to treat other wood.
The method used depends on the size of the wood you are treating. Smaller pieces can be soaked in Polycryl, while larger pieces can be treated by brushing Polycryl on. Keep in mind that most of the absorption is through the end grain. If you are treating bowls, pour the first diluted solution into the bowl and periodically add more Polycryl to the solution until the desired concentrate has been reached. Be sure to keep the bowl covered with plastic during treatment to prevent evaporation. To prevent mold growth, do not leave the wood covered in plastic longer than 7-10 days. Remove the plastic when drying the wood.
Wood treated with Polycryl should be dried slowly. Remember that moisture has been added to the wood. Rapid drying can cause checking and/or cracking. A good method of slowing down the drying is to place the treated wood in a cardboard box and loosely fold the top. This will slow the drying and still allow the wood to breathe.
Although Polycryl is considered non-toxic, it is not registered as food grade. Therefore, we cannot endorse that it can be used on items intended for use with food.
Polycryl is used on wood that is degraded and degraded wood has less stress, therefore, in most cases, Pentacryl is not necessary to stabilize the wood.
Yes, wood treated with Polycryl can be glued. However, the wood should be completely dry prior to gluing.
Any type of finish is compatible with Polycryl. We have yet to find a finish that will not work with Polycryl.
No, Polycryl should not be used as a finish. Polycryl remains moisture sensitive and can be washed off with water. For this reason, wood should be finished after treating with Polycryl.
Polycryl is a large molecular polymer and will only penetrate the soft areas of the wood. Any build up of Polycryl on the hard areas can be wiped off with a damp cloth.
No, Polycryl is light fast and does not yellow or darken in the wood with time.
In some rare cases when the wood is extremely soft, Polycryl can be used in it’s concentrated form. However, Polycryl is not intended to be used to fill gaps in wood that has become decayed.
The reason for starting out with a thin mixture first, is to get the deepest penetration. If Polycryl is applied in it’s concentrated form, it would block the surface and prevent further penetration.