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How does sun affect wood decks?

The sun can have various effects on wood decks, both directly and indirectly, due to its exposure to ultraviolet (UV) radiation and heat. Here are some ways in which the sun can affect wood decks:

Fading: Prolonged exposure to sunlight can cause the color of wood decks to fade over time. UV radiation breaks down the pigments and natural oils in the wood, leading to a loss of color saturation and vibrancy. This is particularly noticeable in decks with darker stains or finishes.

Drying Out: Sunlight and heat can accelerate the drying process of wood, leading to moisture loss and potential drying out of the wood fibers. This can cause the wood to shrink, crack, and split, especially in hot and arid climates or during periods of prolonged drought.

Warping and Cupping: Uneven exposure to sunlight can cause wood decks to warp, cup, or twist as the surface layers of the wood expand and contract at different rates. This can result in uneven decking boards, gaps between boards, and an uneven surface texture.

Surface Degradation: UV radiation can degrade the surface of wood decks by breaking down the lignin and other natural components of the wood. This can result in surface checking, cracking, and weathering, giving the deck a rough, weathered appearance.

Mold and Mildew Growth: While sunlight can help inhibit the growth of mold and mildew on wood surfaces by drying out moisture, shaded areas of the deck may still be susceptible to fungal growth. These areas may retain moisture longer, leading to the development of mold, mildew, and algae.

Heat Retention: Wood decks exposed to direct sunlight can become hot to the touch, especially during the summer months. This can make the deck uncomfortable to walk on barefoot and can contribute to overheating of the surrounding indoor spaces if the deck is attached to a house.

 

To mitigate the effects of sun exposure on wood decks, consider taking the following preventive measures:

• Apply a protective sealant or wood finish with UV inhibitors to help protect the wood from UV radiation and moisture.
• Provide shade over the deck with umbrellas, awnings, pergolas, or shade sails to reduce direct sunlight exposure.
• Regularly clean and maintain the deck to remove dirt, debris, and organic matter that can promote mold and mildew growth.
• Use a deck cooling system or cooling mat to reduce surface temperatures and make the deck more comfortable during hot weather.
• Monitor the condition of the deck regularly and address any signs of damage or deterioration promptly to prevent further problems.

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Women in Business

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me, that it might be the mirror of my soul, as my soul is the mirror of the infinite God!

O my friend — but it is too much for my strength — I sink under the weight of the splendor of these visions! A wonderful serenity has taken possession of my entire soul, like these sweet mornings of spring which I enjoy with my whole heart. I am alone, and feel the charm of existence in this spot, which was created for the bliss of souls like mine.

I am so happy, my dear friend, so absorbed in the exquisite sense of mere tranquil existence, that I neglect my talents. I should be incapable of drawing a single stroke at the present moment; and yet I feel that I never was a greater artist than now.

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me.

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Diversity in the Workplace

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me, that it might be the mirror of my soul, as my soul is the mirror of the infinite God!

O my friend — but it is too much for my strength — I sink under the weight of the splendor of these visions! A wonderful serenity has taken possession of my entire soul, like these sweet mornings of spring which I enjoy with my whole heart. I am alone, and feel the charm of existence in this spot, which was created for the bliss of souls like mine.

I am so happy, my dear friend, so absorbed in the exquisite sense of mere tranquil existence, that I neglect my talents. I should be incapable of drawing a single stroke at the present moment; and yet I feel that I never was a greater artist than now.

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me.

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Plan Your Business

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me, that it might be the mirror of my soul, as my soul is the mirror of the infinite God!

O my friend — but it is too much for my strength — I sink under the weight of the splendor of these visions! A wonderful serenity has taken possession of my entire soul, like these sweet mornings of spring which I enjoy with my whole heart. I am alone, and feel the charm of existence in this spot, which was created for the bliss of souls like mine.

I am so happy, my dear friend, so absorbed in the exquisite sense of mere tranquil existence, that I neglect my talents. I should be incapable of drawing a single stroke at the present moment; and yet I feel that I never was a greater artist than now.

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me.

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Stain rejuvenates wood decks

Yes, stain can rejuvenate wood decks by enhancing their appearance, restoring color, and providing protection against weathering and wear. Here are some ways in which stain rejuvenates wood decks:

  1. Color Enhancement: Stain can restore or enhance the natural color of the wood, bringing out its beauty and richness. Whether you choose a clear stain to highlight the natural grain of the wood or a tinted stain to add color, the result can be a revitalized and refreshed appearance for your deck.
  2. Uniformity: Over time, wood decks may develop uneven coloration or fading due to exposure to sunlight, moisture, and other environmental factors. Staining your deck can help to even out the color and create a more uniform appearance, giving your deck a fresh and cohesive look.
  3. Protection: Stain provides a protective barrier that helps shield the wood from moisture, UV radiation, mold, mildew, and other forms of damage. By sealing the wood surface, stain helps to prevent cracking, splitting, warping, and decay, extending the lifespan of your deck and reducing the need for repairs or replacement.
  4. Preservation: In addition to enhancing the appearance of your deck, stain helps to preserve the natural beauty and integrity of the wood. By penetrating into the wood fibers and forming a durable seal, stain helps to maintain the structural integrity and strength of the deck, ensuring its long-term durability and performance.
  5. Enhanced Grain Definition: Stain can accentuate the natural grain and texture of the wood, adding depth and dimension to the appearance of your deck. This can create a more visually interesting and aesthetically pleasing surface that complements the overall design of your outdoor space.
  6. Easy Application: Stain is relatively easy to apply to wood decks, whether using a brush, roller, or sprayer. With proper preparation and application techniques, staining your deck can be a straightforward and rewarding DIY project that can significantly improve the look and condition of your outdoor living area.
  7. Versatility: Stain comes in a variety of colors, tones, and opacity levels, allowing you to customize the look of your deck to suit your personal preferences and style. Whether you prefer a natural, transparent finish or a bold, opaque color, there is a stain option available to achieve the desired effect.

Overall, staining your wood deck can be an effective way to rejuvenate its appearance, protect it from damage, and prolong its lifespan, allowing you to enjoy your outdoor living space to the fullest for years to come.

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Leaves can damage wood decks

Yes, leaves can potentially cause damage to your wood deck if they are allowed to accumulate and remain on the surface for an extended period. Here are some ways in which leaves can impact your wood deck:

  1. Moisture Retention: Leaves can trap moisture on the surface of your deck, especially if they are wet or if rainwater becomes trapped underneath them. This moisture can penetrate the wood and contribute to rot, decay, and mold growth over time.
  2. Staining: Decomposing leaves contain tannins and other organic compounds that can leach onto the surface of your deck, causing stains and discoloration. This can detract from the appearance of your deck and require additional cleaning and maintenance to remove.
  3. Mold and Mildew Growth: Moisture trapped beneath leaves can create ideal conditions for mold and mildew growth on your deck. This can lead to unsightly black or green patches of mold, as well as potential health risks and structural damage if left unchecked.
  4. Surface Damage: As leaves decompose and break down, they can release acids and enzymes that may accelerate the degradation of the wood surface. This can result in surface damage, including staining, etching, and erosion of the wood fibers.
  5. Slippery Surface: Wet leaves on your deck can create a slippery surface, increasing the risk of slips, trips, and falls, particularly during rainy or humid weather. This poses a safety hazard, especially if the deck is used frequently or by children and elderly individuals.

To prevent leaves from causing damage to your wood deck, consider the following preventive measures:

  • Regularly sweep or use a leaf blower to remove leaves, debris, and organic matter from your deck surface. This will help prevent moisture buildup and reduce the risk of mold and mildew growth.
  • Install gutters, downspouts, and drainage systems to direct rainwater away from your deck and prevent water from pooling or accumulating on the surface.
  • Trim back overhanging branches and vegetation to minimize the amount of leaves and debris that fall onto your deck. This will also help improve airflow and reduce moisture retention.
  • Consider applying a protective sealant or wood finish to your deck to help repel water, resist stains, and protect the wood from moisture damage.
  • Use mats or outdoor rugs in high-traffic areas of your deck to provide additional protection and prevent slips and falls on wet surfaces.

By taking proactive steps to remove leaves and mitigate potential damage, you can maintain the appearance, integrity, and safety of your wood deck for years to come.

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Is mold on your deck dangerous?

Mold on your deck is not necessarily dangerous in the sense of being immediately harmful to your health, but it can pose certain risks and should be addressed to prevent potential issues. Here are some considerations regarding mold on your deck:

  1. Allergens: Mold spores can be allergenic for some individuals, causing allergic reactions such as sneezing, coughing, itching, and respiratory symptoms. People with allergies or asthma may be more sensitive to mold exposure.
  2. Slippery Surface: Mold growth on your deck can create a slippery surface, especially when wet. This increases the risk of slips, trips, and falls, which can result in injuries, particularly if the deck is used frequently or by children and elderly individuals.
  3. Surface Damage: Over time, mold can cause surface damage to wood decks, especially if left untreated. Mold may penetrate the wood fibers, leading to staining, discoloration, and deterioration of the wood. This can weaken the structural integrity of the deck and require costly repairs or replacement.
  4. Aesthetic Concerns: Mold growth on your deck can detract from its appearance and curb appeal. Stains, discoloration, and black or green patches of mold can make your deck look unsightly and unkempt.
  5. Potential Health Risks: While most types of mold found on outdoor surfaces are not toxic, certain species of mold can produce mycotoxins that may pose health risks if inhaled or ingested. However, the risk of exposure to toxic mold is generally low in outdoor environments.

To address mold on your deck and mitigate potential risks, consider the following steps:

  • Regularly clean and maintain your deck to remove dirt, debris, and organic matter that can promote mold growth. Sweep or power wash your deck periodically to remove mold spores and surface buildup.
  • Use a mold-inhibiting cleaner or mildewcide solution to treat areas of mold growth on your deck. Follow the manufacturer’s instructions for proper application and safety precautions.
  • Improve ventilation and airflow around your deck to reduce moisture accumulation, which can contribute to mold growth. Trim back vegetation, clear debris from drainage channels, and ensure proper water drainage away from the deck.
  • Consider applying a mold-resistant sealant or wood finish to your deck to help prevent mold growth and protect the wood from moisture and UV damage.
  • Address any underlying issues that may be contributing to mold growth, such as leaks, drainage problems, or excessive shade and moisture retention.

By taking proactive measures to address mold on your deck and prevent its recurrence, you can maintain a safe, attractive outdoor space for your enjoyment.

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From Old Deck to New Deck… in 4 Steps

There’s no secret to deck maintenance – repair the deck, clean it and protect it. But learning tricks the pros use can make the job go faster and the results last longer.  Here is how you go from old deck to new deck in 4 steps…

The damage was bad.  The appearance was worse. The Johnsons to consider ripping up the entire deck and starting over.

Barbara and Phil Johnson, of Mobile, Alabama, faced the same problems that many other deck owners face. Over the years, the elements, kids and pets took a devastating toll on their backyard deck.  The damage was bad.  The appearance was worse. The Johnsons to consider ripping up the entire deck and starting over.

Before taking such a drastic step, they spoke with a construction company for advice.  According to the contractor, the Johnsons’ deck was in better shape than most. “This area of the country is tough on decks,” he says. “I’m sometimes asked to replace pressure-treated decks that are less than eight years old.” He adds, “Most of these decks are victims of neglect. With regular maintenance, a deck will easily last for twice as long.” The good news is that most decks, like this one, can be rejuvenated for a lot less than the cost of replacement.

Following are some techniques you can use to give an old deck a new lease on life, or to help maintain the look of a new one. For this project, we enlisted George Graf, a lead carpenter with Mobile’s Lipford Construction, and John Starling, owner of John the Painter. Hiring pros is easy on the schedule but hard on the budget—the cost of repairing a 700-sq.-ft. deck is $700, or about $1 per square foot. Restoring a deck yourself will cost a third as much.

A deck rejuvenation project like this can be done in two days, but it’s best to spread the work over two weekends to ensure the wood is completely dry before you apply stain.

AFTER: Most decks can be rejuvenated for a lot less than the cost of replacement.

Step 1: Making Repairs

Begin by inspecting the entire deck. Pay special attention to any part of the deck that is in direct contact with the ground, such as the posts, stair stringers or joists that are at ground level. Graf uses a screwdriver to check for structural damage. “If you can sink the tip of a screwdriver into a post or joist, it means the you’ve got rot and it’s time for a major renovation,” Graf says.

Also, inspect the deck-to-house connection. “Screws and bolts can loosen and rust,” he says. “Without the proper use of spacers and flashing, moisture can cause your band joist to rot.”

Tighten the fasteners that attach the deck to the house, look for any missing, bent or rusted flashing and carefully inspect inside and out for any telltale black stains that suggest moisture is working its way into your home.

Next, look for any cosmetic damage. For example, tap down any popped nails or consider replacing them with screws. For the Johnsons’ deck, Graf used galvanized ring-shanked nails when he replaced a few damaged boards. “Screws don’t pop like nails, ” he says “but we want the new boards to match the rest of the deck.”

Tip: If you need to rip replacement decking to match existing boards, use a tablesaw. Ease the sawn edge using a router fitted with a ⅜-inch roundover bit.

Carefully inspect railings and decking for loose wood. “No one likes to catch a 2-in.-long splinter on the hand or foot,” Graf says.

Use a pry bar to pull damaged boards. Remove fasteners and lift the board straight up to avoid damaging adjacent boards.

Step 2: Cleaning the Surface

Here’s the bad news: Every deck should have an annual cleaning. Assuming they have been maintained regularly, most decks can be revived with just a deck cleaner. Some products, like Thompson’s Deck Wash ($10, 1 gal. covers 250 sq. ft.), you mix in a bucket and apply to the deck; others, like GE’s Weathermate ($30, 1 gal. covers 500 sq. ft.), come in containers with integral applicators that you hook up to a garden hose. Once on the deck, most still require a stiff-bristle brush and a lot of elbow grease to work the mixture into the wood.

Always wear eye protection and gloves when working with concentrated chemicals. You’ll also want to protect nearby plants. The level of plant protection depends on the type and concentration of the chemicals you choose. For weak solutions and “plant-friendly” cleaners, you may need to only mist the plants before and after using cleaning. Powerful deck restorers can burn leaves on contact; in that case you should cover nearby plants with plastic sheeting.

For tackling tough stains, use a pressure washer (about $70 a day), which is the best way to remove sun-damaged wood fibers and tackle scrub-resistant stains. Graf recommends using a fan-type nozzle instead of a pinpoint nozzle that can dig into the wood. For removing the mildew, Graf mixes his own cleaning solution (see “Choosing the Right Cleaner,” on the facing page), which he feeds into the intake hose on the washer.

Go over the deck with a stiff-bristle brush to work the cleaner into the wood fibers, and then rinse. The boards should be kept damp in order for the cleaning solution to work effectively. Allow the deck to dry thoroughly before staining.

Choosing the Right Cleaner
There are dozens of deck-cleaning products on the market. Most contain one of the following four chemicals as their main ingredient. Each is effective for different types of stains.

Sodium hypochlorite: This chemical—chlorine bleach—is good for removing mildew but isn’t effective on dirt or other stains. So mix it with an ammonia-free detergent. Thoroughly rinse the deck after using this chemical because it can eat away at the wood, resulting in fuzzing and premature graying.

Sodium percarbonate: When mixed with water, this chemical forms hydrogen peroxide (an oxygen-based bleach) and sodium carbonate, which acts as a detergent. It is good for removing dirt, mildew and weathered wood.

Oxalic acid: This is effective in removing iron stains and the brown-black tannins that frequently occur with cedar and redwood decks. This acid is commonly found in deck brighteners. Oxalic acid isn’t effective against mildew, so you may want to use it after cleaning the deck with a bleach-based cleaner.

Sodium hydroxide: Also known as lye, this is the key ingredient in most finish lifters or removers. Don’t leave it on too long, or it can eat away at the wood.

Be very careful when working with any of these chemicals, especially when they’re in their most concentrated (premixed) form. Wear the proper safety equipment and follow the manufacturer’s directions to the letter. Rinse the surface thoroughly and allow it to dry before refinishing.

DIY CLEANER
Here’s a deck cleaner you can make yourself. Recommended by the U.S. Department of Agriculture Forest Products Laboratory, it’s good for mildew and dirt.

• 1 qt. sodium hypochlorite solution (household bleach)
• ⅓ cup powdered laundry detergent
• 3 qts. warm water

In a 5-gal. plastic bucket, add the bleach and detergent to the water, then brush the cleaner onto the deck. Rinse thoroughly before applying a finish.

Caution: Do not use a detergent that contains ammonia. Ammonia and bleach react to form a poisonous gas.

Trim the replacement boards with a circular saw. Using adjacent boards as a cutting guide is faster and more accurate than measuring.

Step 3: Applying the Stain

Once all of the repairs have been made and the deck is clean, it’s time to apply a protective finish. Clear finishes and transparent stains are fine for new wood, but for older decks, Starling recommends using a semitransparent stain.

“The grain still shows through, but the pigment gives the old wood a clean, uniform color and helps the new wood blend in,” he says. The pigment also provides extra protection from the damaging effects of the sun and will last longer than clear finishes. Unlike paint, stain is absorbed by the wood and does not form a film on its surface, so it will not peel or chip.

Starling uses a sprayer and 2-in. brush to apply the stain. “Spraying is fast, and puts more stain on the wood than rolling or brushing,” Starling says. Most painters and homeowners are better off spraying on a generous coat of stain and then following up with a roller or brush to spread out puddles and work the finish into the wood. Starling, however, uses a modified technique. “Rollers push the stain off the wood and down the cracks,” he says. “I don’t get paid to paint dirt beneath the deck.” Starling sprays on a light coat, most of which is quickly absorbed into the wood. He uses the brush to remove puddles. “If the stain’s too thick, it dries blotchy,” he explains. Starling recycles the excess stain for use on exposed end grain.

Starling recommends starting at an inside corner and working out, applying the stain parallel to the deck boards. To avoid staining the nearby brick, he uses a small piece of cardboard as a spray shield; the brush provides even more control around deck railings and posts.

This 700-sq.-ft. deck required about 5 gal. of stain — almost twice as much as the estimates indicated on the can. Explains Starling, “Old wood can get thirsty. On some decks, I’ll need to apply two or three coats of stain in order to get a uniform finish.”

Subsequent coats should be applied while the first coat is still wet or they will not be absorbed into the wood. Stain won’t peel, but it can wear away, especially in high-traffic areas. Starling recommends applying a fresh coat every other year. A clear water repellent can be applied between stainings for extra protection.

Mesh filters (about $1 each) catch any particles that could wind up clogging the nozzle on the washer.

Step 4: Redoing a Railing

Because the original railing on their deck was in such bad shape, the Johnsons decided to replace it with a maintenance-free railing system. They chose Fiberon, a vinyl-coated wood-plastic composite. It’s available in premade panels or as kits. The Johnsons liked the contrast the white railing offered.

Tip: After cutting the end post flush with the deck using a reciprocating saw, remove the old railing in sections.

For an existing deck or concrete slab, Fiberon makes a surface-mount bracket, as shown below. For new decks, the manufacturer recommends installing the posts before the decking and using metal brackets that attach to the joists. To conceal any minor gaps where the balusters meet the bottom rail, Graf recommends using a mildew-resistant acrylic caulk.