The most important barrier protecting your home, family, and belongings from the weather is your roof. It provides a safe and comfortable living space by protecting you from the sun, wind, rain, and snow. While the roof deck is a lesser-known part of the roofing system, it’s one of the most important, and should be inspected and maintained in order to maintain your home’s durability. However, the roof deck doesn’t last forever and can easily wear down as time goes on, making the roof more vulnerable to damage.
To help you out, in this blog post, we will look at every aspect of redecking, including when it is required, its advantages, and the things to think about before committing to it.
What Is Roof Decking?
The base layer of a roofing system, commonly referred to as the roof deck or roof sheathing, offers structural stability as well as a level surface on which roofing components like metal panels, shingles, and tiles can be installed.
It is usually installed directly on top of the roof trusses or rafters and is made up of wood boards or sheets. In order to preserve the integrity and lifespan of the complete roofing structure, the primary purpose of roof decking is to guarantee that the roofing materials have something to be fastened to, and evenly distribute the weight of this material.
The Importance Of Roof Decking
- Structural Support: Provides a solid base to support the weight of roofing materials and additional loads, like snow.
- Roof Stability: Prevents sagging and potential collapse, keeping the roof secure over time.
- Weather Protection: Acts as a barrier against rain, snow, and wind, helping to prevent leaks and interior damage.
- Insulation Enhancement: Improves insulation, maintaining comfortable indoor temperatures and boosting energy efficiency.
- Versatility: Available in various materials to suit residential or commercial needs, extending the roof’s lifespan.
Materials Used for Roof Decking
Plywood
Made of thin layers of wood veneer glued together, plywood is favored for its strength and durability in roof decking.
Oriented Strand Board (OSB)
Composed of compressed wood strands, OSB offers a cost-effective alternative to plywood and is widely used in modern construction.
Metal
Mainly used in commercial and industrial buildings, metal decking is made from steel or aluminum, and provides superior durability and fire resistance.
How Can You Tell If Your Roof May Need Redecking?
1. Age Of The Roof
A roof that’s between 20 and 30 years old should be inspected for signs of aging and deterioration.
2. Sagging Or Wavy Roof
If you see your roof sagging or rippling behind the roofing materials, it may signal that the roof decking has become damaged. Over time, plywood can become thin and damaged by moisture, leading to serious structural issues if it’s not fixed promptly.
3. Rotting Or Compromised Boards
Soft, spongy areas on the decking are a clear sign of rot. Rotten boards can cause leaks and further damage, making it crucial to replace them to keep your roof safe and secure.
4. Gaps Between Planks
Check for gaps wider than 1/8 inch between decking planks. These gaps can let moisture in, which might lead to leaks and wind damage. Fixing these gaps early can prevent more significant problems down the road.
5. Previous Roof Leaks
Leaks that have occurred in the past may have weakened the decking. Even if the source of the leaks, such as the roofing material, were repaired, the underlying decking could still be compromised. A thorough inspection will help determine if redecking is necessary.
Factors That Cause Decking Damage
1. Mold Growth
Mold can make your deck slippery and unsafe, showing up as gray, green, or black spots. Regular cleaning, debris removal, and protective stains can help prevent mold. Use special cleaners if mold is already present.
2. Water Damage
Water can weaken decking, causing cracks and splinters, especially with consistent freeze/thaw cycles. Ensure proper drainage, apply weather-resistant finishes, and regularly seal the wood to protect against moisture.
3. Sunlight Exposure
Sunlight can damage roofing materials, causing them to fade and become brittle and leave the roofdeck vulnerable. To protect your new deck, apply UV-resistant coatings or treatments to roofing materials that are covering it.
4. Poor Design and Construction
Inadequate design or construction practices can weaken a roof deck significantly. Issues like insufficient slope for drainage, improper flashing installation, and the use of low-quality materials can lead to water pooling and leaks. To prevent these problems, work with experienced contractors who ensure proper design and quality materials.
5. Excessive Moisture
Poor attic ventilation can trap moisture, leading to warping or rotting of the roof deck. Ensuring adequate ventilation allows excess moisture to escape, reducing the risk of damage and maintaining the deck’s integrity.
6. Inadequate Drainage Systems
A poorly functioning drainage system can cause water to pool on the roof deck, increasing the risk of leaks and structural damage. Regularly maintaining and clearing debris from drains ensures proper water flow and prevents damage.
How Much Does It Cost To Redeck A Roof?
The cost of redecking a roof involves replacing the plywood or OSB that supports the roofing material. Depending on the roof’s condition and material choices, this major home improvement project can cost between $4,000 and $15,000 or more.
Other Costs Associated With Redecking A Roof
1. Material Costs
Decking material prices vary. Plywood costs $0.50 to $2.00 per square foot, while OSB is cheaper at $0.30 to $1.80 per square foot.
2. Labor Costs
Labor costs depend on the location of your home and the jobs complexity, ranging from $1.50 to $3.00 per square foot.
3. Condition of Existing Decking
If the existing decking is in poor condition, additional costs for removing and disposing of old materials will apply, costing $1 to $3 per square foot.
4. Additional Repairs
Fixing issues like damaged rafters adds to the cost, with rafter replacement ranging from $5 to $14 per square foot.
Ideal Timing For Redecking Your Roof
1. During a Roof Replacement
The most obvious time for redecking comes when you’re replacing your roof. Many times, roofing contractors will not install new material onto the roof if the deck is rotten or severely damaged. Doing this together saves you from extra work and costs later, ensuring your new roof is built on a solid base.
2. When Major Repairs Are Needed
For roofs with significant damage, such as from storms, consider redecking while making repairs. This helps to fix the underlying issues and strengthens the overall roof structure.
3. Based on Deck Age
If your roof deck is getting old, redecking ahead of time can be a smart move. Utilizing regular inspections will help your spot wear early and address it before the decking reaches the end of its lifespan.
The Redecking Process: What to Expect
Here is what you can expect if you need redecking completed:
#1. Initial Inspection
A roofing contractor will inspect your roof to assess the roof deck’s condition within the attic and identify problems.
#2. Removal of Old Materials
The existing roofing materials are removed, allowing the contractor to check the decking underneath for any damage.
#4. Replacement of Damaged Boards
Any damaged or rotted boards will be replaced with new, high-quality materials to maintain the roof’s integrity.
#5. Installation of New Decking
If significant damage is found, a new roof deck may be installed in the affected areas to ensure a solid foundation for the new roof.
How Long Does It Take To Redeck A Roof?
Redecking a 1,500 sq ft roof usually takes 1 to 2 days with a crew of 4 to 5 workers. This includes removing the old decking and installing new material. Larger or more complex roofs may take longer.
Get Expert Redecking Services From OConnor Contracting
Your roof deck is crucial for maintaining the strength and performance of your roof. If you notice signs like leaks, sagging, or soft spots, it’s a good idea to consider redecking. Redecking helps ensure your home stays safe and extends the life of your roof.
Whether you’re planning a roof replacement or dealing with an aging roof, redecking can make a big difference. For expert help and advice, contact OConnor Contracting. Our team can assess your roof deck, provide the best roofing services, and ensure your roof remains secure and durable. Call us at (716) 600-7663.
