Flat Roofing: EPDM Installation FAQ

Flat Roofing: EPDM Installation FAQ

EPDM roofing is a highly durable and long-lasting synthetic rubber-based material that is especially popular on buildings with gentle slope grades. Available in several different thicknesses and tones, EPDM roofing offers proven advantages including:

  • Outstanding resistance to hail and fatigue
  • Strong performance in low temperatures
  • Elite wind, heat and fire resistance
  • Resistance to UV radiation, ozone and weathering
  • Excellent durability, with an average lifespans of 25 to 30 years
  • Thermal shock resistance

EPDM Roofing Installation FAQ

Frequently asked questions regarding EPDM roof installations include:

Can EPDM roofing be installed directly over an existing roof?

EPDM roofing can be installed over an existing roof if a new protective layer is added. This layer should measure 5/8 of an inch in height, and can be made from plywood, OSB board, or polyisocyanurate board with a layer of protective fiberglass.

What are the various installation options?

EPDM roofing can be installed in one of three ways: it can be attached mechanically, installed fully adhered, or ballasted together.

How are the individual membranes sealed?

The EPDM roofing membranes are sealed off with specially formulated tape adhesives or liquid bonding agents.

How thick should the membranes be?

In most cases, the standard 45 millimeter thickness will be more than sufficient. However, roofing contractors recommend moving into the 60 to 90 millimeter ranges for applications that demand higher levels of puncture protection. For example, if there are tree branches hanging over a specific section of roof, it is a good idea to install thicker layers in those areas to prevent weather-related damage.

Is any surface preparation necessary to perform EPDM roofing repairs?

In most cases, the area to be repaired must only be cleaned with a broom and washed with soap and water, then gently primed. EPDM roofing is fully cured when it is installed, so no additional curing is necessary. Most repairs can be performed with everyday tools, and there is usually no need for advanced or expensive equipment.

Are there any temperature factors or limitations to consider during the installation process?

While the roofing itself can be installed in temperatures as low as 20 degrees Fahrenheit, the most commonly used bonding adhesives have higher temperature ranges, which typically demands that the installation be performed during warmer weather. Neoprene-based adhesives need ambient temperatures of at least 40 degrees Fahrenheit for 48 hours after the installation to settle properly, while latex-based adhesives require ambient temperatures in the 50-degree range.

A local roofing contractor will be your best source of further information on region-specific installation guidelines.

Are You Considering EPDM For Your Property?

If you’re looking for a contractor with flat roofing installation expertise, consider All Roofing Solutions, a family owned & operated Delaware roofing contractor with over 15 years of experience. In business since 1998, we provide roof, gutter, siding & window installation and repair services to residential & commercial customers taking great pride in what we do.

We proudly serve homeowners throughout Delaware and southeastern Pennsylvania, and look forward to discussing your low-slope roofing repair project!

Call 302-725-ROOF (7663) in Delaware or 610-551-ROOF (7663) in Pennsylvania for a free estimate!

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