Asphalt shingles are one of the most popular roofing materials, prized for their affordability, durability, and aesthetic appeal. A professional roofing services team will start by preparing the roof surface, installing underlayment, laying out the starter shingles, and securing the first row. From there, they’ll continue shingling the roof, installing the ridge cap shingles, and performing a thorough inspection and cleanup once the installation is complete. With the right tools and a clear step-by-step approach, roofing services can efficiently install asphalt shingles. Understanding the benefits of asphalt roofing shingles, such as their long-lasting durability and cost-effectiveness, will help you make an informed decision. This article will walk you through the entire process of installing asphalt shingles on a roof.
7 Steps To Install Asphalt Shingles on A Roof
Here are the steps roofing contractors follow for asphalt shingle installation on a roof.
1. Prepare the Roof Surface
Laying the shingles requires a clean and even surface on the roof. Here is how to go about it:
- Remove Old Shingles: If your roof already has its share of shingles, take them off using the pry bar. Again, start from the ridge downwards, but carefully to avoid damage to the roof deck below for asphalt shingle installation on a roof.
- Inspect The Roof Deck: Once the old shingles have been removed, inspect the roof deck for damage or rot. Replace any damaged plywood, then proceed with your project. A solid, clean surface is essential for a durable roof.
- Install The Drip Edge: A drip edge along the roof’s eaves protects the deck from water-related damage. These metal flashings direct water off and away from the fascia into the gutters. Nail the drip edge down using roofing nails, ensuring no gaps.
2. Install Underlayment
Underlayment is an added layer of protection between the roof deck and the shingles.
- Roll Out the Roofing Felt: Start from the bottom of your roof and roll your underlayment out horizontally. Each row must be overlapped about 4-6 inches and nailed or stapled down.
- Install The Ice and Water Shield: For areas prone to ice dams, throw an ice and water shield along the eaves for additional protection. This keeps water from seeping into your roof during frozen conditions.
3. Lay Out Your Starter Shingles
Starter shingles are essential in laying the befitting base for the first row of the shingles.
- Cut And Install Starter Shingles: Shingles must be cut horizontally in the middle and installed at the eave with the adhesive strip facing up. The starter will prevent water from creeping underneath the shingles installed on the roof.
- Chalk Line Guide: Mark a straight line across the roof with a chalk line to perfectly align your starter shingles and subsequent rows.
4. Install the First Row of Shingles
With your starter strip in place, you can start laying the first full row of shingles.
- Position The First Shingle: Align the first full shingle with the bottom edge of the starter row and extend it barely over the drip edge about ¼ inch.
- Nail The Shingles: Apply four to six roofing nails per shingle. Locate them about 1 inch from the edge and 5½ inches above the bottom edge of the shingle. The nails should penetrate the sheathing for maximum hold during asphalt shingle installation.
- Continue Across the Roof: Lay the first row of shingles across the roof, ensuring each shingle overlaps the one beneath it by half a tab.
5. Continue Shingling the Roof
After the first row is complete, the remainder of the roof will be pretty standard.
- Stagger The Seams: To start the second row, cut 6 inches off the first shingle. Staggering the seams keeps water from seeping between shingles, making the roof more durable overall.
- Work Your Way Up: As experts work their way up the roof, they will stagger each shingle 6 inches and line up the bottom of each shingle with the top of the tabs below it, ensuring each course overlaps. This is a vital step in the asphalt shingle installation guide.
- Nail Properly: Experts use the manufacturer’s recommended nailing pattern. They don’t over or under a nail; either will compromise the roof’s integrity.
6. Install the Ridge Cap Shingles
Ridge cap shingles are made to cover the peak of your roof and to seal the joint between the two sides.
- Prepare The Ridge Cap Shingles: If you can’t buy pre-made ridge cap shingles, cut standard three-tab shingles into thirds. Each piece folds over the ridge and is then nailed down.
- Work From Both Sides: Start at one side of the ridge and work toward the center. To install asphalt shingles on a roof properly, remember to lap each shingle, as you did with the common roofing shingles.
- Seal The Ridge: Once you have covered the entire ridge, spread some roofing cement under the last ridge cap shingle to prevent wind uplift.
7. Inspect and Clean Up
Once the shingles are up, it is time to review your work and ensure that everything is tied down.
- Check For Loose Shingles: Cover the roof and check for any shingle that may be loose or not nailed appropriately. Add more nails or adhesive to any shingles that aren’t secured.
- Seal Flashing and Vents After Installation: Ensure that all areas around roof penetrations, such as chimneys and vents, are sealed with roofing cement. This will prevent leaks.
- Clean Up Debris: Finally, the debris and extra material on the roof and ground level should be cleared. A clean workplace will keep you away from any accidents and ensure that the job will have a professional look.
How to install shingles on a roof step by step?
To install shingles on a roof, start preparing the roof by removing old shingles, inspecting and repairing the underlayment, and installing new underlayment. Then, cut shingles to size, apply adhesive, and install the first row along the bottom edge of the roof. Lastly, secure with roofing nails or staples.
How many layers of shingles are needed for a roof?
Typically, a roof has two shingle layers: the first layer is the base layer, and the second layer is the visible layer that protects from the elements. The base layer provides a foundation and extra support, while the top layer ensures durability and weather resistance. Together, they enhance the roof’s longevity and strength.
How long do asphalt shingles last?
Asphalt shingles typically last between 20 to 30 years, depending on quality, installation, and weather conditions. Regular maintenance can also help prolong their lifespan, ensuring they continue to protect your home effectively. Investing in higher-quality shingles can further extend the roof’s durability.
Conclusion
Installing asphalt shingles on a roof is a complex process that requires careful attention to detail and a solid understanding of roofing techniques. The roofing installation technicians will prepare the roof surface, lay on underlayment, chalk your starter shingles, and then install the first row. Next, they will continue shingling the roof, installing the ridge cap shingles, and inspecting and cleaning up after the installation. Reach out to Precision Roofing for the best shingle roof installation services.