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HomeExpert CenterResidentialThe Complete Guide to Replacing Roof Decking

The Complete Guide to Replacing Roof Decking

 

Why Roof Decking Replacement is Crucial

Roof decking replacement is essential for maintaining a secure and stable roof over your home. Roof decking, also known as roof sheathing, provides the foundation for your shingles and other roofing materials. If the decking is damaged or rotting, it can’t support your roof properly, leading to leaks, sagging, and other issues.

Quick Overview for Those in a Hurry:

  • What is Roof Decking? Roof decking is the layer of plywood or oriented strand board (OSB) installed on the roof rafters, providing a base for shingles.
  • Importance: Roof decking strengthens your roof structure, supports shingles, and helps insulate your home.
  • Signs of Replacement Needed: Cracked boards, sagging spots, mold, mildew, and popping nails are all signs your decking may need replacement.
  • Quick Cost Insight: Replacing roof decking can cost anywhere from $65 per sheet to over $1000, depending on labor and materials.

At Master Roofing Inc., we specialize in roof decking replacement, ensuring your roof is safe and sturdy. With over a decade of experience in the roofing and real estate industries, I, Quinn V. Schilz, am dedicated to providing top-notch services and educating homeowners on the importance of maintaining their roof decking.

Here’s a detailed look at why roof decking replacement is so important and how we can help you protect your home.

Key signs your roof deck needs replacing and cost factors - Roof decking replacement infographic step-infographic-4-steps

Key terms for Roof decking replacement:

What is Roof Decking?

Roof decking, also known as roof sheathing, is the essential layer of wood boards that form the foundation of your roof. It provides the base on which shingles and other roofing materials are installed. Without sturdy roof decking, your shingles won’t have the support they need to protect your home effectively.

Types of Roof Decking

There are two main types of roof decking: plank decking and sheet decking. Each type has its unique characteristics and uses.

Plank Decking

Plank decking consists of elongated, rectangular wooden boards. These planks typically come in two sizes: 1×6 or 1×8. Before the invention of plywood, plank decking was the standard. While it’s less common today, some older homes still use this type of decking.

Sheet Decking

Sheet decking, also known as sheathing, is more commonly used in modern roofing. It comes in flat sheets of wood and can be made from either plywood or oriented strand board (OSB).

  • Plywood: Available in various thicknesses such as ⅜”, ½”, ⅝”, and ¾”. Plywood is durable and widely used for roof decking.
  • OSB (Oriented Strand Board): The most common type of sheet decking today. OSB is made from wood chips or strips compressed together to form a flat sheet, typically 7/16” thick. It’s cost-effective and readily available.

Types of Roof Decking - Roof decking replacement

Importance of Roof Decking

Roof decking is crucial for several reasons:

  • Stability: It provides structural support to your roof, helping to stabilize the beams and trusses.
  • Insulation: Proper decking helps insulate your home, contributing to energy efficiency.
  • Support for Shingles: Decking acts as the base for shingles, ensuring they are securely attached and can effectively protect your home from the elements.

Quick Facts

  • Plank Decking: Made of 1×6 or 1×8 planks, less common but still found in older homes.
  • Sheet Decking: Includes plywood and OSB, with OSB being the most common today.
  • Thickness Options: Plywood comes in various thicknesses, such as ⅜”, ½”, ⅝”, and ¾”.

For more in-depth information on the types of roof decking, you can check out this article.

Next, we’ll explore When Should Roof Decking Be Replaced? to help you identify the right time to consider a replacement.

When Should Roof Decking Be Replaced?

Roof decking is the backbone of your roof. Knowing when to replace it can save you from bigger, costlier problems down the road. Here’s how to tell if your roof decking needs replacement.

Signs Your Roof Deck is Ready to Be Replaced

1. Compromised Wood Integrity

If your roof decking’s integrity is compromised, it won’t support your shingles properly. Look for:

  • Cracked Boards: Cracks can weaken the entire roof structure.
  • Sagging Spots: These indicate that the wood can no longer bear the weight of the roof materials.

2. Rotting Wood

Rot is a clear sign that your decking needs replacement. Watch out for:

  • Watermarks: Stains or discoloration on the wood.
  • Mold and Mildew: These not only damage the wood but also pose health risks.

3. Visible Damage

Some signs are easier to spot:

  • Popping Nails: Nails that are pushing up from the decking indicate wood movement or weakening.
  • Spongy Feel: If the wood feels soft or spongy when you walk on it, it’s likely rotting.

4. Inspection

Regular inspections can catch these issues early. You should inspect your decking:

  • During Roof Replacement: This is the best time to check the condition of your decking.
  • After Severe Weather: Storms and heavy rain can cause significant damage.

5. Tear-Off Process

The only way to fully assess the condition of your roof decking is to remove the shingles and underlayment. This process will reveal:

  • Extent of Rot: You’ll see how far the rot has spread.
  • Structural Damage: Any damage to the rafters or other structural components.

Quick Checklist

  • Cracked Boards: Weakens the roof structure.
  • Sagging Spots: Indicators of compromised support.
  • Watermarks: Signs of water penetration.
  • Mold and Mildew: Health hazards and wood damage.
  • Popping Nails: Signals wood movement or weakening.
  • Spongy Feel: Likely rot.

For more detailed information on roof decking replacement, you can read this article.

Next, we’ll dive into How to Replace Roof Decking to guide you through the replacement process.

How to Replace Roof Decking

Replacing roof decking is a critical task that ensures the stability and longevity of your roof. Follow this step-by-step guide to get it done right.

Step-by-Step Guide

Step 1: Estimate Damage

Before you start, you need to estimate the extent of the damage. Your roofers will inspect the shingles and underlayment to gauge how much of the decking needs replacement. This initial estimate helps in planning the scope of the project.

Step 2: Remove Roofing

All the roofing materials above the damaged decking need to be removed. This includes shingles, underlayment, and possibly flashing. Use a crowbar to lift the shingles and nails. Start from the roof’s peak and work your way down.

Step 3: Measure the Area

Once the damaged decking is exposed, measure the affected area. Accurate measurements are crucial for cutting the replacement decking to fit perfectly.

Step 4: Cut Rotted Wood

Using a saw, carefully cut out the rotted sections of the decking. Be cautious not to damage the rafters below. Each cut should extend above a rafter to ensure the new decking is properly supported.

Step 5: Cut Replacement Decking

Back on the ground, cut the new decking material to fit the gaps. You can use either plywood or OSB, but make sure the new decking is the same thickness as the old to ensure a flat surface for the shingles. Plywood sheets typically come in 4-foot by 8-foot sizes.

Step 6: Position Replacement

Position the new decking on the roof. You might need to make last-minute trims to ensure a snug fit. This step is crucial for maintaining the structural integrity of your roof.

Step 7: Secure Decking

Secure the new decking using roofing nails or a nail gun. Ensure that the nails are properly driven into the rafters to hold the decking firmly in place.

Step 8: Optional Additional Measures

Depending on your roof’s condition, you may want to take extra steps to protect the new decking. Consider sealing nearby wood with treatments that resist rot or applying waterproof tape to the edges where the new and old decking meet.

Step 9: Replace Other Roof Materials

Finally, replace the rest of the roofing materials. Start with an ice and water protector, such as ArmourGard™, to shield the decking from future moisture. Ensure that the new protector overlaps the old by a few inches. Reinstall new shingles and flashing to complete the job.

Tools and Materials Needed

  • Crowbar: For removing shingles.
  • Measuring Tape: To measure the damaged area.
  • Saw: To cut out rotted wood.
  • Roofing Nails: To secure the new decking.
  • Nail Gun: For quick and efficient nailing.
  • Safety Equipment: Including harnesses and gloves for protection.

Quick Tips

  • Safety First: Always wear safety gear and ensure the roof is stable before starting.
  • Accurate Measurements: Double-check your measurements to avoid errors.
  • Proper Tools: Use the right tools for each task to make the job easier and safer.

For more detailed information on roof decking replacement, you can read this article.

Next, we’ll discuss the Cost of Roof Decking Replacement to help you budget for this important project.

Cost of Roof Decking Replacement

Replacing roof decking can be a significant expense, but it’s crucial for maintaining your roof’s integrity. Various factors affect the cost, including wood prices, the type of decking, labor, and materials. Let’s break it down.

Wood Prices

Wood prices fluctuate based on supply and demand. In recent years, prices have been quite volatile. For instance, in 2021, wood prices soared, making roofing projects more expensive. Always check current prices to get an accurate estimate.

Plank Decking vs. Sheet Decking

Plank Decking: This type of decking is made from elongated wooden boards, typically 1×6 or 1×8. It’s priced per linear foot, and because it’s labor-intensive to install, it usually costs about three times more per square foot than sheet decking.

Sheet Decking: This includes plywood and OSB (oriented strand board). OSB is the most common and is made from wood chips compressed into a 7/16” sheet. Plywood comes in various thicknesses like ⅜”, ½”, ⅝”, and ¾”. Sheet decking is priced per sheet, making it more cost-effective than plank decking.

Labor Costs

Labor costs can vary widely. Some contractors charge by the hour, while others charge per sheet or per square foot. For example, some estimates are around $80 per man-hour, while others might charge $65 per sheet for replacement.

Materials and Installation

Materials: Besides the wood itself, you’ll need nails, underlayment, and possibly flashing. These materials add to the overall cost but are essential for a proper installation.

Installation: Labor costs for installing sheet decking are generally lower than for plank decking due to the reduced time and effort required. However, the total cost will depend on the condition of your existing decking and how much needs to be replaced.

Price Breakdown

Here’s a quick comparison:

Type of Decking Price (Per 100 sq ft) Labor Cost Total Cost
Plank Decking $850 $70/man-hour High
Sheet Decking (OSB) $65/sheet $70/man-hour Lower

Additional Factors

  • Extent of Damage: If only a few boards need replacing, costs will be lower. Extensive damage means higher costs.
  • Local Labor Rates: These can vary by region. Some areas have higher labor costs due to demand and cost of living.
  • Permits: Some regions require permits for roof decking replacement. Check with your local authorities.

Cost-Saving Tips

  • Accurate Estimates: Get a detailed estimate that includes a worst-case scenario for full decking replacement.
  • Reputable Contractors: Choose contractors who provide transparent pricing and include line items for decking replacement in their estimates.
  • Photo Verification: Ask for photo or video confirmation of the damaged decking to ensure you’re only paying for necessary replacements.

For a detailed estimate and professional roofing services, fill out our contact form or call us at (800) 914-4108.

Next, let’s dive into the Frequently Asked Questions about Roof Decking Replacement to address common concerns.

Frequently Asked Questions about Roof Decking Replacement

How often should roof decking be replaced?

Generally, roof decking should be replaced every 20-30 years. However, this can vary based on the condition of the decking and the materials used. Regular inspections by a professional can help determine if your roof decking needs replacement sooner. Signs like cracked boards, sagging spots, or visible mold can indicate it’s time for a replacement.

Can you put new roof decking over old decking?

Yes, you can put new decking over old decking, but only under certain conditions. According to the IRC code, the existing decking must be in good condition and structurally sound. This practice is not common and is usually reserved for unusual circumstances. It’s always best to consult with a professional before making this decision to ensure compliance with local building codes.

What material is best for roof decking?

The two most common materials for roof decking are OSB (Oriented Strand Board) and plywood. Both have their advantages:

  • OSB: Made from compressed wood chips, OSB is cost-effective and commonly used. It’s strong and less susceptible to warping.
  • Plywood: Available in several thicknesses (⅜”, ½”, ⅝”, ¾”), plywood is durable and versatile. It’s often preferred for its stability and ease of installation.

The best choice depends on your budget and the specific needs of your roof. For more detailed advice, consult a professional roofer who can assess your situation and recommend the best material.

For more information or a detailed estimate on your roof decking replacement, fill out our contact form or call us at (800) 914-4108.

Conclusion

In conclusion, roof decking plays a crucial role in the overall integrity and functionality of your roof. It provides a solid foundation for other roofing materials like shingles and insulation, and helps stabilize the beams and trusses that support your home. Without strong and intact decking, your roof cannot effectively protect your home from the elements.

Regular inspections are essential to maintain the longevity of your roof decking. We recommend having your roof inspected at least once a year and after major weather events. Look out for signs of damage like cracked boards, sagging spots, watermarks, mold, mildew, and popping nails. Addressing these issues early can prevent more extensive damage and costly repairs down the line.

At Master Roofing Inc., we pride ourselves on delivering top-notch roofing services that ensure your home remains safe and secure. Whether you need a simple inspection or a full roof decking replacement, our team of skilled professionals is here to help.

For reliable and expert roofing services, contact Master Roofing Inc. today! Fill out our contact form to get started. Let’s ensure your roof is in optimal condition and ready to protect your home for years to come.

 

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