Is Thompson's Clear Sealer effective for new cedar fences?

Thompson's WaterSeal® Clear provides a basic paraffin-wax based water barrier. It is designed to prevent water absorption in new cedar, though it provides minimal UV protection compared to semi-transparent stains.

How often should clear wood sealer be reapplied in the PNW?

In the Pacific Northwest, clear sealers typically require reapplication every 12-24 months due to heavy rainfall and the breakdown of wax-based barriers.

Technical Review: Thompson’s Clear Sealer on New Cedar

Thompson clear stain application on new cedar fence board in Woodinville WA

At Elegant Painting®, we are often asked about the immediate preservation of new wood. Applying a Thompson’s WaterSeal® Clear Sealer to a new cedar fence board provides an instant moisture barrier, helping to prevent the "water-logging" that leads to premature warping and fungal growth.

As shown in our technical samples, the clear sealer allows the natural, raw aesthetic of the cedar to remain the focal point while adding a protective paraffin-wax layer to the surface fibers.

Professional clear wood sealer bead test on new cedar substrate

Expert Commentary on Wood Preservation

While clear sealers are excellent for immediate waterproofing, they provide very little protection against UV-induced graying. In the Pacific Northwest, where we experience intense sun-to-rain cycles, clear sealers typically require annual reapplication. If you desire a "natural" look with longer durability, we often recommend a semi-transparent paraffin oil stain which offers deeper fiber penetration.

Thompson clear sealer application results on cedar fence in Cottage Lake WA

Managing Cedar Fences in Cottage Lake & Woodinville

In high-moisture neighborhoods like Cottage Lake and Sammamish, a new cedar fence is a significant investment. Utilizing a clear sealer immediately after installation (or once the wood has reached the proper moisture content) is critical for wood preservation. In 2026, exterior paint trends for fences are shifting toward these "invisible" protective layers that highlight the wood's organic character while preventing the black mold growth common to untreated Eastside cedar.

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