Sealing a Winterstone Sculpture
Do I have to seal my Winterstone sculpture?
- No. If the sculpture is intended for indoor use it is not necessary to apply a sealer. However, it is recommended.
My sculpture will be outdoors. Do I have to seal it?
- Yes. Durability of an outdoor sculpture relates to weathering of the surface. Rain, freeze/thaw and air pollutants are some of a sculpture's worst enemies. Applying a sealer is highly recommended to enhance the sculpture's durability and lifespan.
What is the difference between a Penetrating and a Topical Sealer?
- Penetrating sealers become an integral part of the sub-strata. They cannot flake and peel off and generally don't have to be re-applied for several years. Heat will not affect them, nor exposure to sunlight. They usually leave no surface sheen and do not change the natural look of the surface. The drawback is that once they are applied, no other sealer, except wax, can be applied over them. An example is Behr #980 Concrete Waterproofer.
- Topical sealers make up the bulk of the sealers on the market. There is a wide range of types with widely differing chemistries and varying degrees of appearance, performance and longevity. They vary from very low to very high sheen. An example of a good low bloss sealer is Behr Premium Low Luster sealer available at Home Depot. Similar concrete sealing products with no luster or high luster are also effective.
Which type of Sealer should I use on my Winterstone sculpture?
- The choice depends on which appearance you prefer as well as the planned maintenance program. The only technical requirement is that the sealer be "breathable", particularly for use in extreme climates with freeze/thaw cycles. Breathable sealers are either water-based acrylic or silicone. This may have to be repeated every few years for outdoor pieces.