roof decking installation in progress on residential home

After your old roof is removed, the next critical step is roof decking inspection and installation. Think of decking as the skeleton of your roof; it’s what everything else rests on. Without a solid, even foundation, even the best shingles won’t perform properly.

Here’s what happens when Da’ Roofers handle your roof decking:

Inspect the Decking: Check all planks and plywood for damage or rot.
Replace Rotten Plywood Sheets: New sheets installed at $90 per sheet.
Replace Damaged Planks: Installed at $10 per linear foot.
Ensure a Level Surface: All decking is secured and even for underlayment and shingles.
Prepare for the Next Steps: A solid deck supports waterproofing, underlayment, and the new shingles.

A strong, properly installed deck sets your roof up for decades of reliable performance. That’s why roofers pay a lot of attention to this part of a roof system. Let's find out more.

Why Proper Decking Matters

Roofer standing on exposed roof decking before shingle install

Roof decking does more than hold shingles. It:

Supports the weight of roofing materials, snow, and rain.
Provides a flat, stable surface for underlayment and shingles.
Prevents sagging or uneven spots that can cause leaks.
Helps maintain your roof’s energy efficiency and structural integrity.

Any weak or rotten planks left in place could compromise your new roof, leading to leaks, damage, or costly repairs down the road. That’s why Da’ Roofers inspect and replace every damaged piece before moving forward.

The Step-by-Step Decking Process

roof inspection during decking process before installation

1. Deck Inspection

Once the old roof is removed, the crew examines the roof deck thoroughly:

Check for rotten plywood sheets.
Look for warping, cracks, or soft spots.
Identify any areas that need extra support.

A detailed inspection ensures no weak points are overlooked.

New plywood installed after removing damaged roof decking

2. Replacing Rotten Plywood

If plywood is damaged or rotting, it’s removed and replaced. At Da’ Roofers:

Cost: $90 per sheet of plywood.
Crews ensure the new sheet fits perfectly and is securely fastened.

Proper installation prevents leaks and maintains the roof’s strength.

3. Replacing Damaged Planks

Individual planks may also need replacement, especially in older homes:

Cost: $10 per linear foot of planking.
Each plank is carefully measured, cut, and installed.
Crews make sure all planks are level and flush with the surrounding decking.

4. Securing the Deck

Once all replacements are complete, the decking is nailed down firmly. Crews double-check for any loose spots and make sure the entire surface is smooth and flat. This prevents bumps or gaps that could interfere with the underlayment and shingles.

5. Preparing for Underlayment and Shingles

With the deck properly installed:

Ice & water shield or other waterproofing materials can be applied.
The underlayment lies flat with no wrinkles.
Shingles attach securely for long-term durability.

Proper decking installation makes the rest of the roof installation much faster and more effective.

Homeowner Tips for Decking Day

Close up of roof decking with visible damage and soft spots

Ask the crew to show you any areas of replacement. It’s a good way to see exactly what’s being done.
Keep children and pets away while planks or sheets are being removed and installed.
Confirm the costs for replacement plywood or planks ahead of time to avoid surprises.
Ensure driveway access is clear for lumber delivery.

Final Thoughts

Roof decking is the foundation of a strong, long-lasting roof. By inspecting every plank and sheet of plywood, and replacing any that are damaged, Da’ Roofers ensures your new roof sits on a solid, reliable base.

A properly installed deck not only protects your home from leaks and damage but also allows the rest of your roof installation to go smoothly and efficiently.

With Da’ Roofers, you’re not just getting a new roof — you’re getting a foundation built to last, backed by experience, precision, and care for every detail.

FAQ

1. How long does decking installation take?

Depending on the roof size and amount of replacement needed, this step usually takes a few hours to half a day.

2. Can decking replacement be skipped?

No. Leaving rotten plywood or planks weakens the entire roof structure and can lead to leaks or sagging shingles.

3. How do I know if I need new plywood or planks?

Da’ Roofers inspect every inch of your deck. Any rotted, soft, or warped materials are replaced before moving on.

4. What are the costs for decking replacement?

The costs are as follows:

$90 per sheet of plywood
$10 per linear foot of planking

5. Will this affect the overall project timeline?

Replacing decking is accounted for in the installation schedule, but major repairs can add a few hours to the project.

Installing Roof Decking: The Foundation of a Durable Roof