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How to Install a Roll Roof? (In 4 Steps)

Want an affordable roof option? It would then help if you considered getting roll roofing; the roofing material is an easy one to install and doesn’t require advanced carpentry know-how. You should consider roll roofing materials whose material is made to composition sands but not as durable for a more practical solution. Also, you should be sure about the warranty and install roofing materials using the double-coverage method to last even longer.

Usually, roll roofing is installed over primer painted sheathing, and applying it to roof felt or primer will give better protection against condensation and leaking. Also, you can use the exposed-nail method for a sloped roof, and for a flat roof, you can use the double coverage.

Having someone work with you, you can spend half a day installing the roll roofing and flashing with only little complications. Since roll roofing is the least difficult of roofing materials to install, you can prepare the roof for re-roofing by tearing off the old shingles.

What do I need to Install the Roll Roof?

Here are some of the tools you need for the effective installation of a roll roofing.

  • Hammer
  • A measuring tape
  • Carpenter’s square
  • Broom
  • The utility knife
  • Tin shears
  • Chalk-line

What Materials do I Need?

Apart from the tools listed above, you also need the following materials to run an effective roll roofing installation.

  • Flashing
  • Primer
  • Roll roofing
  • Nails for flashing and sheathing
  • Roofing cement

How Do I Install Roll Roofing in Four Steps?

1. Move Out the Roofing Materials

Before beginning installation, you should install drip-edge flashing, primers WSU only if needed. Prepare the roofing cement, drive nails near the required edges, and smoothen out any creases. You can also install flashing, but usually, you might only need to apply an 18-inch –wide strip of roll roofing.

2. Attach the First & Second Sheets

To begin roofing, you should position the first course accurately so that it overhangs the drip edges and move it out to a calculated distance. Push the nails every 3 inches at one end of the rake, pull it taut, and push the nails further along the eave edge.

For a good installation, the nail should only be 1 inch from the edges, and for more protection, you could add a 3-foot wide strip on the 18-inches. When placing the second sheet, it should overlap the first by 4 inches, or you could use a different type of roll roofing to cover the area. Use a chalk line to indicate the top of the next sheet; then, you can roll it along the line and push nails for the first sheet.

3. Spread the Roofing Cement & Seal the Vents

The next step is to make pretty sure that no two butt joints get closer than 2 feet from each other. You can now spread a 6-inch-wide layer of the prepared roofing cement on the edge of the first sheet and entrench the second sheet in the cement.

To seal the vent, spread the roofing cement around the plumbing pipe and cut a hole in a piece of the roofing material. The hole should be about 2 feet wide, so it’s easy to slip it over the pipe. Now, the roofing piece should overlay the lower course by 4 inches or more. You should also make a hole in the roofing piece, and you can slip it over too. Then, you can now embed both cut roofing pieces in the cement, and for more roofing protection, you can add boot flashing.

4. Overlap the Valley & Add the Final Piece

We are slowly getting to the end of the installation. The next step is to work from one side of the roof across the valley’s center by 2 feet. Now on the other edge of the valley, you can overlay the valley, hit a chalk line, and gently trim the piece that is located at the center of the valley. While doing this, you should keep the nails 12 inches away from the center of the valley and use a 4-inch wide roofing cement bed to attach everything.

You can simply overlap the sheets at the ridge using the cement and nails for the final piece. But note that the last piece does not come down at least 8 inches past the ridge peak. Ensure that the peak embedded in the cement is well covered.

Frequently Asked Questions

Q: What Do I use to seal my rolled roof?

You can seal your roll roof with cement. But before you do it, make sure that you’ve applied all materials to the layers, trimming the edges and the layers with the use of a razor knife. The cement is often applied on the surface of the nails. The seal will glue the nails to the roof.

Q: Can I install roll roofing over shingles?

Yes. The reason is simple: both roll roofing and shingles are a composition of the same asphalt material. Besides, roll roofing is easier to install on your roof. Depending on the number of existing seals, you may want to remove the covering.

Q: Should I underlay my roll roofing?

It depends on your budget, but installing an underlay is not out of necessity but preference. While roll roof underlay is not costly, they offer some layers of protection. Make sure you nail down the underlay and then roll it, making sure it is both smooth and flat.

Final Thoughts

If you are dealing with a slanted roof, then you should strip off roofing materials, and position them to flush with the drip edges along the eave and rake. Then attach them by pushing the two rows of nails and use the trowel to spread the cement over half of the strips.

Then, you can now set the first course in the cement and be sure it overhangs only by 1/4 inches. Finally, roll and position the roofing cautiously as repositioning is not an easy task. Now you can press it into the cement and drive nails into its top edge.

Contact Behmer Roofing

Behmer is ready to take on your toughest roofing challenges. Located across Arizona, Behmer Roofing handles all projects from roof replacements, maintenance, new construction and commercial roofing. Contact us today for more information.