EPDM Roofing

Resolve Persistent Flat Roof Leaks with Proven EPDM Solutions

Tired of constant leaks, ponding water, and costly energy bills from an outdated tar or gravel roof? Discover how EPDM roofing offers a durable, cost-effective solution specifically tailored to withstand the diverse weather patterns found across Southern Oregon and the Klamath Basin. For immediate assistance with your flat roof, contact us today to schedule an inspection or discuss financing options.

• Boost your property's protection with EPDM’s superior resistance to UV radiation, hail, and thermal shock.
• Reduce heating and cooling costs year-round with EPDM’s excellent insulation compatibility and reflective options.
• Quick installation processes ensure your home or business is watertight without significant operational downtime.

All installations come with comprehensive manufacturer warranties and hassle-free permit handling to ensure code compliance.

Commercial and residential property owners in Medford, Grants Pass, Klamath Falls, and surrounding areas face unique challenges regarding flat and low-slope roofing. The shift from wet, gray winters to intense summer heat puts immense stress on roofing materials. Pressure Point Roofing understands that EPDM (Ethylene Propylene Diene Monomer) provides the elasticity and durability required to handle these temperature fluctuations without cracking or separating at the seams. Whether you are located in the Rogue Valley, the Applegate, or higher elevations like Butte Falls and Cave Junction, a properly installed rubber roof is your first line of defense against structural water damage.

What You Get With A Modern EPDM Roofing System

When you invest in an EPDM roofing system, you are purchasing a long-term waterproofing solution, not just a temporary patch. EPDM is a synthetic rubber roofing membrane that has been the industry standard for low-slope roofs for decades due to its resilience. Unlike traditional built-up roofs (BUR) that rely on layers of asphalt and gravel which can become brittle over time, EPDM remains flexible. This flexibility is critical for buildings in areas like Ashland and Central Point, where thermal expansion and contraction occur daily.

A complete EPDM system installation typically includes a thorough structural deck inspection to ensure the substrate is sound. If the decking is compromised by rot—common in older buildings in Gold Hill or Rogue River—it must be repaired before the new roof goes on. Following the deck preparation, high-density ISO (Polyisocyanurate) insulation boards are installed. These boards not only provide the required R-value to meet local energy codes but also create a smooth, rigid surface for the membrane.

The scope of work also encompasses the custom fabrication of edge metal and flashing. The perimeter of a flat roof is where wind uplift forces are strongest. Properly secured metal coping and drip edges prevent the membrane from peeling back during high wind events. Furthermore, an EPDM system includes advanced drainage solutions. Whether your building utilizes internal drains, scuppers, or gutters, the system is designed to move water off the roof efficiently, mitigating the risk of standing water which can lead to premature deterioration. View our project gallery to see examples.

How The EPDM Installation Process Works

The installation of a rubber roof is a technical process that requires precision and adherence to manufacturer specifications. While the exact method may vary based on the specific building structure, the "fully adhered" system is often the preferred method for longevity and wind resistance. This process ensures the membrane is bonded directly to the insulation below, eliminating the movement and flutter associated with mechanically attached systems.

Surface Preparation and Demolition

The process begins with the removal of the existing roofing system down to the structural deck. In some retrofit scenarios, if the existing insulation is dry, a recover board may be installed over the top. However, for maximum lifespan, a complete tear-off allows the crew to inspect the deck for any water damage or rot that needs addressing. The surface must be clean, dry, and free of debris to ensure proper adhesion.

Insulation and Cover Board Installation

Layers of ISO insulation are laid out and fastened to the deck. The thickness of this insulation depends on the building’s energy requirements. In many cases, a tapered insulation system is installed. This involves using angled insulation boards to create a slope on a dead-flat roof, directing water toward drains or scuppers. This is particularly important for properties in wetter zones like Merlin and Williams to prevent ponding.

Membrane Adhesion

The EPDM membrane sheets are rolled out and allowed to relax. This "relaxing" period allows the rubber to return to its natural shape after being tightly coiled. Once ready, a bonding adhesive is applied to both the underside of the membrane and the substrate (insulation). The crew waits for the adhesive to become tacky before mating the two surfaces. The membrane is then broomed or rolled with a heavy weighted roller to ensure total contact and eliminate air pockets.

Seam Fabrication

The seams are the most critical part of the installation. Adjacent sheets of EPDM are overlapped. The seam area is cleaned with a primer to remove factory talc and dirt. Double-sided seam tape is then applied between the layers. This tape creates a molecular bond that is stronger than the sheet itself. This method is far superior to older liquid adhesives that could degrade over time.

Flashing and Detailing

Every penetration through the roof such as plumbing vents, HVAC units, skylights, and chimneys must be flashed. Uncured EPDM flashing is used for these areas because it can be molded to fit irregular shapes. Once formed, it cures in place. Lap sealant is applied to the edges of all flashings and seams to provide a secondary layer of protection against water intrusion.

When to Replace vs. Repair Your Flat Roof

Deciding between another repair and a full replacement is a financial and structural decision. Many building owners in Phoenix, Talent, and White City try to extend the life of a failing roof with patches, but there is a tipping point where repairs become a sunk cost. Understanding the signs of a terminal roof failure helps you make an educated investment; request an estimate now.

Indicators that repair is a viable option:

• Localized Damage: If the damage is limited to a specific area, such as a puncture from a falling branch or a single open seam, a patch is often sufficient.
• Young Roof Age: If the roof is less than 10-15 years old and was installed correctly, issues are likely isolated and repairable.
• Dry Insulation: If a core cut test reveals that the insulation beneath the membrane is dry, the system is still functional.
• Intact Flashings: If the perimeter flashings and penetrations are in good condition, minor membrane repairs are effective.

Indicators that replacement is necessary:

• Saturated Insulation: Once water breaches the membrane and soaks the insulation, the thermal value is lost, and the moisture gets trapped. This leads to mold growth, deck rot, and structural issues. You cannot patch over wet insulation; it must be removed.
• "Alligatoring" or severe cracking: On older asphalt-based roofs, surface cracking indicates the volatiles have evaporated, and the material has lost its waterproofing ability.
• Shrinkage: EPDM membranes can shrink over time if not installed with proper relaxation time or securement. If the membrane is pulling away from the parapet walls or "bridging" (stretching tight like a drum) at the corners, it is under extreme tension and will eventually tear.
• Recurring Leaks: If you are chasing leaks in different locations after every storm, the system has likely reached the end of its service life.

Local Considerations: Permits, Seasonality, and Climate

Roofing in Oregon requires specific attention to local building codes and environmental factors. From the high desert climate of Klamath Falls to the valley floors of Medford and Eagle Point, the requirements for a successful EPDM installation vary.

Permitting and Code Compliance

Roof replacements generally require a building permit in cities like Jacksonville, Shady Cove, and across Jackson and Josephine Counties. This ensures that the installation meets current structural and energy codes. Professional contractors handle the entire permitting process, including scheduling necessary inspections. This protects the property owner from liability and ensures the roof is recognized as a compliant improvement for insurance and resale purposes.

Seasonality and Application Windows

While EPDM is designed to handle extreme temperatures once installed, the installation process is weather-sensitive. Adhesives used in fully adhered systems require specific temperature ranges to cure properly. The ideal roofing season in Southern Oregon spans from late spring through early fall. Winter installations are possible but require specialized cold-weather adhesives and careful moisture management. In areas like Klamath Falls or Butte Falls, where overnight temperatures drop significantly, scheduling is critical to ensure proper bonding.

Drainage and Slope

Flat roofs are rarely truly flat; they should have a slight slope to shed water. In the Pacific Northwest, "ponding water" (water that stays on the roof for more than 48 hours) is a major concern. Building codes often dictate a minimum slope for new construction or reroofing projects. Tapered insulation systems are frequently used in retrofits to correct drainage issues in older buildings in Grants Pass or Medford, ensuring water flows freely to drains and does not stress the structure.

Technical Advantages of EPDM for Oregon Buildings

The chemical composition of EPDM offers distinct advantages for the specific challenges of the region. Carbon black is added to the membrane to increase resistance to UV rays, which is vital during the intense, cloudless summers in the Rogue Valley. Conversely, the material remains flexible down to -40 degrees Fahrenheit, ensuring it does not become brittle and crack during freezing winter nights in Klamath Falls or higher elevation areas.

Furthermore, EPDM is available in different thicknesses, typically 45 mil, 60 mil, and 90 mil. For commercial applications or areas with foot traffic (such as roofs with HVAC units requiring maintenance), a 60 mil or thicker membrane provides superior puncture resistance. Reinforced EPDM sheets, which contain a polyester scrim, offer added strength against tearing and wind uplift, providing peace of mind during winter storms that sweep through the valley.

Why Choose Professional Installation

A flat roof system is only as good as the details. The vast majority of leaks occur not in the field of the roof, but at the penetrations, seams, and perimeters. Professional installation ensures that these critical areas are handled with the correct techniques and materials. Manufacturer-certified installers have access to the latest technical bulletins and are trained in the specific requirements of the warranty.

Pressure Point Roofing utilizes rigorous quality control measures during every phase of the project. This includes inspecting the deck before covering it, verifying adhesive coverage rates, and probing every inch of welded seam to ensure a watertight bond. Safety is also a paramount concern on flat roof projects. Compliance with OSHA fall protection standards protects both the workers and the property owner from liability.

Choosing the right material is the first step; choosing the right application method is the second. EPDM provides a lifespan that can exceed 20 to 30 years with minimal maintenance when installed correctly. It resists the ozone and ultraviolet light that degrade other materials, making it a sustainable choice for long-term property ownership.

Secure your investment and protect your property from the elements with a roofing system built to last. A professional assessment can determine the current state of your roof and provide a clear path forward, whether that involves targeted repairs or a comprehensive replacement.

Call Now

Ready to stop the leaks and upgrade your flat roof? Contact us today to schedule your comprehensive EPDM roof evaluation.