When should I use roll roofing versus traditional underlayment?
Roll roofing (mineral-surfaced bitumen) can serve as both underlayment and finished surface on sheds or low-slope roofs. Underlayment membranes are installed under shingles, tile, or metal roofs to provide an extra water barrier. LA’s winter rains and seismic codes make underlayment essential for all pitched roofs. Roll roofing is better suited for small structures where cost efficiency is key. Traditional underlayment is the preferred choice for long-term durability in homes.
Are these underlayments compatible with asphalt shingles and tile?
Yes. The self-adhering and APP rolls sold by Supply Ontime are designed for use beneath asphalt shingles, cedar shakes, or clay tiles. Always check manufacturer specifications for temperature limits; high-temperature underlayments are recommended for dark roofs in sunny climates. These products are engineered to bond well even in coastal humidity. Using compatible underlayments helps ensure warranties remain valid.
What roof-underlayment products does Supply Ontime stock?
They offer self-adhering starter rolls, asphalt-saturated rolls, and APP-modified membrane rolls. Options include 33-linear-ft starter strips and tri-ply APP cap sheets for low-slope roofs. These underlayments are designed to enhance waterproofing and extend the service life of roofing systems. Contractors often use them to meet both residential and commercial code requirements.
Can Supply Ontime meet tight delivery schedules for underlayment?
Underlayment rolls are bulky and heavy. Supply Ontime provides same-day delivery or scheduled two-hour slots to job sites. Include any hoisting requirements or rooftop access instructions when ordering. Customers can request truck bed, curbside, or white-gloves delivery depending on the job site. Planning ahead avoids delays in starting roof work.