Membrane Roofing on Low Salina Additions
Rubber, TPO and PVC are no longer three separate arguments in the code, they are one table, and the useful question is which standard yours is specified to.
Low-Slope Roofing quote in Salina
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What to ask a Salina membrane contractor
Get the membrane named and the standard written down, because that single line makes two quotes comparable in a way that a price never will. Then ask about thickness, about how the membrane turns up the wall of the house above it, and about what happens at the edge and at any drain. On the low roofs common in this town, a back addition or an attached garage tied into the main house, the field of the membrane is rarely where things fail. The perimeter and the wall junction are, and those are the parts of the quote worth reading twice.
Ask which membrane and which standard
EPDM, TPO, PVC and the rest each have their own ASTM reference in one code table. A named product with a named standard is a comparable quote.
Read the perimeter detail
Edges, curbs and the turn-up at the house wall are where low roofs fail. If the quote only describes the field, half the work is undefined.
Check an older quote's section numbers
The single-ply sections were renumbered for the 2025 code. A document citing the old arrangement is working from a repealed edition.
What the current code says about single-ply coverings
In the Town of Salina the median year of construction is 1960. Of 16,016 housing units, 14.5 percent were built in 1939 or earlier, 24.3 percent before 1950, 77.0 percent before 1980 and 23.0 percent in 1980 or later. 68.7 percent are single-family detached and 68.7 percent of occupied units are owner occupied.
Source: US Census Bureau, American Community Survey 2020-2024 5-year estimates, tables B25034 year structure built, B25035 median year structure built, B25024 units in structure and B25003 tenure, accessed 2026-09-14
The 2025 Residential Code of New York State merged the two single-ply sections the 2020 edition carried separately, thermoset at R905.12 and thermoplastic at R905.13, into one section R905.12 Single-Ply Roofing. Table R905.12 now names the membrane types together: EPDM to ASTM D4637, TPO to ASTM D6878, PVC and PVC/KEE to ASTM D4434, KEE to ASTM D6754 and CSPE or PIB to ASTM D5019. Sprayed polyurethane foam moved to R905.13 and liquid-applied roofing to R905.14.
Source: 2025 Residential Code of New York State, via UpCodes, accessed 2026-09-14
No public dataset counts enclosed porches, low-slope additions, breezeways or attached garage roofs in Onondaga County. The American Community Survey publishes year structure built, units in structure, tenure and value by place and town, and no roof geometry at all. Neither the Census nor the New York codes publish roof slope or roof covering by property.
Source: US Census Bureau, American Community Survey 2020-2024 5-year estimates, tables B25034 year structure built, B25035 median year structure built, B25024 units in structure and B25003 tenure, accessed 2026-09-14
What low-slope roofing involves
Reading a membrane quote for a low Salina roof
The 2025 code tidied this up and a lot of quotes have not caught up. The single-ply sections that used to sit apart, thermoset and thermoplastic, are now one section R905.12 covering EPDM to ASTM D4637, TPO to ASTM D6878, PVC and PVC alloys to ASTM D4434, KEE to ASTM D6754 and CSPE or PIB to ASTM D5019, with sprayed polyurethane foam moved to R905.13 and liquid-applied to R905.14. The products did not change; the numbering did. In Salina that is worth knowing because 23.0 percent of the town's 16,016 homes were built in 1980 or later and the rest are older, so a lot of low additions and garage roofs here are on their second or third covering and their owners are comparing old quotes with new ones.
Send the size and shape of the low roof
And what it runs into. We arrange an insured contractor who names the membrane and the standard on the quote.
Membrane questions from Salina homeowners
Is rubber still the right answer on a small addition roof?
It is often a good one, and it is no longer the only one the code recognizes at that pitch. EPDM, TPO and PVC all appear in the same table with their own material standards, and which suits your roof depends on size, foot traffic, how it meets the wall above and what is being tied into it. A contractor who only offers one is offering you their preference, which is not the same as your answer.
Do you know how many Salina homes have flat sections?
Nobody does. No public dataset counts additions, breezeways or attached garage roofs in this county, and neither the Census nor the codes publish slope or covering by property. We know the town's age profile, and we know what we find on the roofs we are called to, and we keep those two things separate when we write.
Get a membrane quote you can actually compare
Tell us the Salina address and what is up there now. No obligation, and the detail at the edges is where it matters.