Outdoor cabinets are incredibly useful for storing tools, supplies, and equipment outside of the home. However, exposure to the elements can take a toll over time and lead to damage. Waterproofing outdoor cabinets is an easy and affordable way to help protect their contents and extend their lifespan. Here are some tips on how to effectively waterproof outdoor storage cabinets.
Clean the Cabinets Thoroughly
The first step is to clean the cabinets thoroughly, removing any dirt, debris, mold, or mildew. Use a stiff brush and warm, soapy water to scrub the interior and exterior. Pay close attention to crevices and corners where grime can collect. Rinse with clean water and allow to dry fully. This removes any barriers that could impact the effectiveness of waterproofing materials.
Apply Water-Repellent Sealants
Specialty water-repellent sealants designed for wood, metal, or concrete surfaces work great for outdoor cabinets. Look for heavy-duty formulations that offer long-lasting protection from moisture. Carefully read and follow all label instructions for proper application and drying time. Apply a minimum of two coats for a watertight barrier. Focus on corners, edges, doors, lids, and any hardware.
Use Caulk on Seams and Gaps
Check all seams and gaps around doors, lids, shelves, and any hardware in the cabinet. Apply a flexible silicone caulk to fill in any crevices or spaces that could allow moisture inside. Smooth the caulk with a putty knife for a neat finish. This blocks water from seeping in even from the smallest openings.
Add Weatherstripping
Self-adhesive weatherstripping provides a protective seal around cabinet doors and lids. Measure each opening and cut strips to fit. Remove any backing and press into place along the edges. Choose thick, durable weatherstripping rated for outdoor use. As doors open and close over time, the strips help keep the seal intact.
Consider Specialty Coatings
For metal or plastic cabinets, apply a rubberized coating designed specifically for waterproofing. These coatings contain silicone or other rubber polymers to literally seal the surface from water. Roll or brush on two coats for complete coverage, allowing each to dry as directed. The flexible coating expands and contracts to remain bonded as temperatures fluctuate.
Divert Water Away from Cabinets
Make sure cabinets have adequate roof overhangs or awnings above them to divert rainwater runoff away from the cabinet. Use downspout extensions to direct gutters away from the cabinet location. Slope the ground around the cabinet to encourage drainage away from the unit. These measures all help minimize direct water exposure.
Store Items Off the Floor
Avoid setting items directly on the floor of outdoor cabinets. Elevate them on shelves or blocks to allow air circulation and drainage underneath. Any water that gets inside can evaporate rather than pooling. This prevents having standing water inside the cabinet after rain or snow melts.
Inspect and Maintain Regularly
Check waterproofed cabinets frequently for any new cracks, worn seals or other issues that could compromise the water resistance. Make repairs and reapply coatings as needed to maintain protection. Keeping up with maintenance is key to ensuring outdoor cabinets remain waterproof over years of use.
Waterproofing outdoor cabinets is a relatively simple process that pays off in the long run. Moisture protection preserves the cabinet itself while safeguarding anything stored inside from water damage. With the right products and techniques, you can easily waterproof wooden, metal or plastic outdoor cabinets for lasting performance against the elements.
Frequently Asked Questions About Waterproofing Outdoor Cabinets
How long does waterproofing last on outdoor cabinets?
Depending on the products used, proper application, and regular maintenance, waterproofing can last 2-5 years or longer on outdoor cabinets. Harsh weather, frequent use, and direct sun exposure will impact lifespan. Reapply as needed to maintain protection.
What areas of the cabinet should be waterproofed?
Waterproof the entire exterior surface as well as interior floors and any wooden shelves or dividers. Pay extra attention to corners, hinges, doors/lids and hardware. Seal all gaps, seams and openings.
Should I remove cabinet doors and hardware before waterproofing?
Yes, removing any hardware allows you to seal the cabinet more thoroughly. Make sure to waterproof doors and hardware separately before reattaching them.
Can I use the same waterproofing products on different cabinet materials?
Check that the sealant, coating or caulk is specifically formulated to work with the cabinet material like wood, plastic or concrete. Products are designed for specific applications.
How do I reapply waterproofing products once the initial coat wears off?
Thoroughly clean and dry the cabinets, lightly sand any existing coating to roughen the surface, then apply fresh coats of the waterproofing materials per product specifications.
Will waterproofing products change the look or color of my cabinets?
Water-repellent sealants are often clear when dry, but some can add a slight sheen. Coatings and paints will obviously impact the look, so choose your products accordingly if appearance is a concern.
Can I use waterproofing products meant for wood on metal outdoor cabinets?
Generally no – wood and metal each require specific waterproofing formulas designed to bond effectively and resist moisture on those materials. Always check before applying.
How can I test whether my waterproofed outdoor cabinet is still effective?
On a dry day, close the cabinet and hose it down well, focusing on seams and hardware. After 5-10 minutes, open it to check for any interior leaks or moisture. Repeat waterproofing if any damp spots are found.
Will waterproofing make my cabinets airtight and trap condensation inside?
Good waterproof coatings seal out liquid water but allow interior condensation and humidity to escape as vapor. Avoid using solid plastic sheets or visqueen that can trap moisture inside.
Conclusion
Protecting outdoor cabinets from the elements takes some work up front, but is well worth it for prolonging their usable life. Following these essential tips on how to properly waterproof any wooden, metal or plastic outdoor cabinet will help them stay watertight for years. Investing in the right high-quality sealants, caulks and coatings suited for exterior use is key. With regular inspections and reapplication when needed, your outdoor cabinets will stay dry inside no matter what the weather brings.