Outdoor cabinets are great for storing tools, equipment, and other items outside your home. However, being exposed to the elements means these cabinets need extra protection to prevent damage. Properly weatherproofing your outdoor cabinets will help extend their life and keep your belongings safe from rain, snow, heat, and more. Here are some tips on how to effectively weatherproof outdoor cabinets.
Choose the Right Materials
When selecting an outdoor cabinet, opt for one made of weather-resistant materials. Wood is attractive but requires ample weatherproofing to stand up against the elements. All-metal cabinets with rust-resistant finishes offer durable and long-lasting performance outside. Look for powder-coated steel or aluminum cabinets. Polyethylene plastic is also highly weather-resistant.
Apply Weatherproof Paint/Sealer
For wood cabinets, properly sealing them is key. Apply 2-3 coats of high-quality, exterior-grade paint or sealer to waterproof and protect the wood. Oil-based paints and polyurethane offer excellent protection. Be sure to let each coat fully dry before adding another. Sealing all joints, edges and hardware also prevents moisture intrusion into the wood over time.
Install Flashing Above Cabinets
Flashing helps divert rainwater runoff from above, preventing it from seeping into your cabinets. Use flashing made of galvanized metal, copper, aluminum or weather-resistant vinyl. Run the flashing along the top of the cabinet and a few inches down each side. Secure it with exterior caulk or screws with rubber washers to seal tightly.
Add a Sloped Lid or Overhang
Lids or roofs with a slight downward slope prevent water from pooling on top of the cabinets. The slope lets water easily run off the sides instead of gathering. Include overhangs that extend a few inches past the front of the cabinet doors to help shield the doors and interior contents.
Apply Cabinet Door Weatherstripping
Apply weatherstripping around the doors to protect against drafts and moisture ingress. Look for adhesive-backed vinyl/rubber weatherstripping designed for outdoor use. Ensure the strip fully seals the perimeter when the doors are closed. Compressible foam strips also block debris and insects from entering.
Keep Cabinets Level
Ensure the cabinet base/frame is completely level and square. This keeps the doors, sides and top aligned correctly so moisture cannot seep in between any separated joints or edges. Use shims during installation to level cabinets on uneven surfaces. Bolting cabinets securely to walls also prevents shifting.
Add Water-Diversion Features
Install small gutters along the roof edges to direct water away from the cabinet. Drip caps above doors, weep holes along the cabinet bottom, and graded bases promote drainage and evaporation of any moisture that gets inside. Venting also aids interior airflow.
Use Rust-Resistant Hardware
Opt for weatherproof cabinet hardware – hinges, latches, handles, etc. Look for galvanized steel, aluminum, brass, or stainless steel hardware rated for exterior use. These materials resist rust far better than standard steel hardware. Apply a corrosion-inhibiting paste to increase protection.
Location, Location, Location
Avoid installing cabinets in low spots where water collects. Raise cabinets on blocks or platforms so they stay elevated above potential standing water. Keep them under overhangs or eaves for added weather shielding. Overexposure to sun and heat can also degrade cabinets more rapidly.
With the right location, design, materials and finishing, your outdoor cabinets can better withstand the wear-and-tear of the elements. Properly weatherproofing them helps ensure they stay in great shape for longer enjoyment and optimal storage. Just be sure to periodically reapply protective coatings and check for any new gaps or damage. With proper care, your outdoor cabinets can serve you reliably for many years. Let us know if you have any other tips for weatherproofing outdoor cabinets!
Frequently Asked Questions About Weatherproofing Outdoor Cabinets
How long does weatherproofing last on outdoor cabinets?
Depending on the quality of materials used and how well it was applied, weatherproofing can last 2-5 years typically. Using top-quality exterior paints/sealants and properly prepping surfaces extends its durability. Reapplying every 2-3 years is recommended for continued protection.
Does weatherproofing outdoor cabinets increase costs much?
Not significantly. A good exterior paint or sealer costs $30-60, while weatherstripping is around $10 for a pack. Proper flashing may run $30-50. These are worthwhile investments in prolonging your cabinet’s lifespan outside.
What’s the best weatherproofing method for wood cabinets?
Multiple coats of exterior-grade polyurethane or penetrating oil sealant work best to waterproof wood while allowing the grain to show through. Oil-modified paint also provides excellent protection on wood outdoors. Be sure to prep and clean surfaces first.
Can I use silicone caulk when weatherproofing cabinets?
Yes, clear exterior silicone caulk adheres well and creates a flexible, waterproof seal around doors, trim and joints. It remains effective for many years. Look for caulk labeled for exterior use that contains fungicides and UV blockers for durability.
Should I weatherproof cabinet interiors too?
It’s a good idea, especially along the back panel, doorjambs and any unfinished interior wood that could get damp. An interior enamel paint helps block humidity and prevent mildew inside. Installing ventilation also keeps air circulating.
How do I weatherproof metal outdoor cabinets?
Metal cabinets with powder-coated or enameled finishes already resist weather well. Caulking around doors and hardware gaps is still a good idea. For plain steel cabinets, apply a few coats of high-quality exterior metal paint for protection. Include rust-inhibiting primer.
What’s the best way to mount outdoor cabinets securely?
Anchor mounting into wall studs or masonry provides the most secure base. For siding or drywall, use toggle bolts placed through pre-drilled cabinet back holes. Bolting through the floor into concrete or lag screws into a platform also keeps cabinets steady.
Should I weatherproof the interior of sheds and outdoor structures too?
Yes, it’s wise to add extra waterproofing inside sheds, gazebos, pergolas and other outdoor structures. Look for interior paints and primers labeled for exterior use. Also caulk around fixtures, windows, doors and vents to protect the interior from moisture and humidity.
How often should I reapply weatherproofing to outdoor cabinets?
Every 2-3 years is a good rule of thumb, depending on your climate. Inspect cabinets yearly for any worn, cracked or peeled paint/sealer that needs touching up. Proper prep work when reapplying creates the best adhesion and weatherproofing.
Conclusion
Weatherproofing is critical for outdoor cabinets to withstand sun, rain, snow and temperature extremes. Strategically applying the right combination of coatings, flashing, hardware, grading and design features will extend cabinet life significantly. With quality materials and proper installation, your weatherproofed cabinets can stay like new for years of reliable outdoor storage. Check them periodically for maintenance needs so they continue protecting your valuables despite the elements.