Menifee & Riverside County Single Ply
Single-ply roofs are one-layer membranes for flat roofs on homes and commercial buildings in Menifee and Riverside County.
How We Do It
One-layer membranes for flat roofs
We roll the membrane out over the roof, seal the seams, and flash it at the walls, curbs and drains. A white membrane keeps a flat roof cooler in summer.
Call (619) 227-4340 and tell us about your flat roof.
What The Job Involves
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Membrane over the roof
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Sealed seams
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Flashing at walls, curbs and drains
Signs To Watch For
When A Membrane Roof Needs Work
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Seams Coming Apart
A single ply roof is only as tight as its seams. An open seam lets water run under the membrane, where it can travel a long way before it shows.
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Water That Sits
Ponding water on a membrane roof means the roof isn't draining. It wears the membrane and puts weight on the deck below.
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Flashing Pulling Away
At walls, curbs and drains, the membrane is flashed up and sealed. If it shrinks or pulls loose there, the edges are open to water.
Permits & Title 24
White Membranes And Title 24
A flat roof in Climate Zone 10 falls under California's low-slope cool roof values when more than half of it is replaced: an aged solar reflectance of at least 0.63 and a thermal emittance of at least 0.75, or an SRI of at least 75, plus R-14 continuous insulation or a roof assembly U-factor of 0.039, unless an exception applies.
To count toward the cool-roof values, the membrane has to be rated by the Cool Roof Rating Council. An ENERGY STAR label alone doesn't show that a roof meets California's Energy Code.
Sources: 2025 California Energy Code, Title 24 Part 6, Section 150.2(b)1I; California Energy Commission, 2025 Single-Family Residential Compliance Manual. Checked October 2, 2026.
Photo: A white flat roof between two shingle roofs, one of our torch down jobs
Questions
Single Ply Questions
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Single ply or torch down?
Single ply is one membrane rolled out over the roof with sealed seams. Torch down is a base sheet and a cap sheet, heat-welded with a torch. Both are roofs for flat and low-slope sections.
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Why a white membrane?
A white membrane keeps a flat roof cooler in summer. In Climate Zone 10, a flat re-roof that replaces more than half the roof generally has to be highly reflective too, unless thicker insulation or another exception covers it.
Source: 2025 California Energy Code, Title 24 Part 6, Section 150.2(b)1I.
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Do you work on commercial flat roofs?
Yes. Single ply goes on homes and commercial buildings, and our roof repair page shows a commercial flat roof we redecked.
Page updated October 3, 2026.
Free Quotes
Talk To Us About Your Roof
Massivo Roofing Inc gives free quotes on single ply. Call (619) 227-4340 or send the quote form, and we will come look at the roof.
Se Habla Español. California contractor license #1131290.
Photo: our crew on a GAF re-roof
