Q: What is CWF-UV?
A: CWF-UV is a long lasting exterior wood finish that combines the performance and durability of oil with the convenience of soap and water cleanup. It is available in clear, cedar, redwood and honey gold tones.
Q: What distinguishes CWF-UV from other finishes?
A: CWF-UV is higher in protective oil and resin solids than other finishes. It provides excellent protection from moisture, ultraviolet attack and weathering. It is versatile and works equally well on decks, siding and shake applications.
Q: How long will CWF-UV last?
A: Applications on wood siding and shakes may last up to 3 years, depending on the severity of the exposure. For deck applications, recoating every other year is recommended to restore the color of the wood and maintain protection.
Q: Can I tint CWF-UV?
A: Yes, you can add up to 1 ounce of all-purpose color per gallon. Do not exceed 1 ounce of colorant. Always test your color on a small section prior to coating the entire surface.
Q: Will the wood stay a uniform color between applications?
A: Although wood coated with clear may become very light and then turn gray, it is still protected and does not require recoating until it begins to turn gray. Some color variation will occur between protected areas and areas more exposed to the weather. In general, toners will maintain a more uniform appearance over time than the clear.
Q: Can CWF-UV be used on new wood?
A: No. New wood should be allowed to weather for at least one year. This weathering process breaks down mill glaze, allows excess moisture to escape and opens the grain so that a finish can penetrate properly. It also allows natural chemical extractives in the wood that can cause staining to escape. Use New Wood Defender on new wood first to protect and stabilize the wood during the weathering period. CWF-UV can then be applied after one year of weathering.
Q: Why can't CWF-UV be applied to T-111?
A: T-111 is pressed wood, constructed in layers, bound by glue. CWF-UV is a penetrating oil product, intended to penetrate deep into the wood providing protection from within. If CWF-UV is applied to T-111, it can only penetrate as far as the first layer of glue, which will have direct impact on the performance and longevity of the product. It will not harm the wood, in the way of de-laminating, however, we do not recommend it.
Q: What is the best method to apply CWF-UV?
A: Brush and roller are the best ways to apply CWF-UV. Both application tools work the product down into the grain of the wood assuring good penetration and uniform coverage. CWF-UV can also be applied by airless spray application using a 1500-1800 lb. of pressure and a .017-.021 orifice spray tip. Backbrush or backroll the surface after spraying to assure penetration and uniformity.
Q: Can CWF-UV be thinned?
A: No, you cannot thin CWF-UV. Attempting to do so will affect the integrity of the product.
Q: How many coats of CWF-UV should be applied?
A: One coat is sufficient for most applications. Severely weathered wood or rough sawn siding may require two coats.
Q: Can CWF-UV be used in a garden sprayer?
A: No. CWF-UV is too thick for garden sprayer application.
Q: How do I prepare weathered wood for a CWF-UV application?
A: Always clean weathered wood with Dekswood® Cleaner using 1 part Dekswood to 4 parts water. Allow the wood to dry for two to three days of dry weather before applying CWF-UV.
Q: When can I apply CWF-UV?
A: Apply CWF-UV when the ambient temperature is between 50 degrees and 80 degrees Fahrenheit. Do not apply when there is a threat of rain and avoid applying it in direct hot sunlight. Applying an oil finish to hot wood limits penetration.
Q: How do I avoid glazing or shiny spots of CWF-UV on deck boards?
A: Glazing and shiny spots are caused by incomplete penetration of the finish caused by puddled areas in low spots and cupped sections of the boards. Inspect the deck surface approximately 20 minutes after the CWF-UV application and wipe off any areas that still look "wet" with a clean rag. This procedure will eliminate the problem. Some shiny finish may remain on knots and hard grain, but the gloss will dull down with exposure.
Q: What is the best way to apply CWF-UV or any other type of clear stain?
A: The best tool with which to apply toners, semi-transparent, and clear coatings is usually a brush. It allows you to work the product into the wood pores. Pads on a stick work well also. If you attach the pad to a stick you don't have to bend over if you are staining decks and porches.
Q: Why can't CWF-UV be used on screened-in areas that are outdoors (not indoors)?
A: CWF-UV contains mildewcides and petroleum distillates that require sunlight and proper ventilation to cure. If your screened-in area does not receive direct sunlight, the dry time will be affected and it may remain tacky. Therefore, we do not recommend CWF-UV to be used in a screened-in area.
Q: I purchased CWF-UV Clear, why isn't it transparent in the can?
A: CWF-UV is an emulsified oil (water/oil blend) with minimal pigment. It appears 'milky' looking in the can, but once applied, the product will dry to a rich, warm honey tone, considered a 'clear wood finish.'
CWF-UV Product Warning