Rubber Roof Installers San Francisco

Rubber Roof Installation FAQs

Can you put a new rubber roof over an old one?

Installing a new rubber roof (EPDM membrane) over an old one, known as a roof overlay or recover, is possible under certain conditions. However, there are important considerations:

• Condition of the Existing Roof: The existing rubber roof should be in relatively good condition, with no significant damage or ponding water issues.
• Number of Layers: Most building codes allow only one layer of roof overlay. If your existing roof already has an overlay, a complete tear-off is usually required.
• Compatibility: Ensure the new EPDM membrane is compatible with the old one and that the adhesive will bond effectively to the existing surface.
• Local Building Codes: Check with your local building department to verify if roof overlays are permitted and if any specific requirements apply.

While a roof overlay can be a cost-effective option, it's crucial to consult with a qualified roofing contractor to determine if it's suitable for your roof's specific circumstances. They can assess the existing roof's condition and advise on the best approach.

Do rubber roofs require a lot of maintenance?

Rubber roofs are known for their low maintenance requirements. However, regular inspections and basic care can extend their lifespan and prevent issues. Here are some maintenance tips:

• Visual Inspections: Inspect the roof at least twice a year (spring and fall) for any signs of damage, such as cracks, punctures, or seam separation.
• Debris Removal: Keep the roof surface clear of leaves, branches, and other debris that can trap moisture and cause deterioration.
• Seam Inspection: Periodically inspect the seams of the EPDM membrane to ensure they are properly sealed and not showing signs of deterioration or separation.
• Flashing Inspection: Check the flashing around vents, pipes, and other penetrations to ensure it's in good condition and securely attached.
• Ponding Water: If you notice ponding water on your flat roof, address the drainage issue promptly to prevent damage to the roofing membrane.
• Professional Inspections: Consider having a professional roofing contractor inspect your rubber roof every few years for a more thorough assessment.

What is the process of installing a rubber roof?

The general steps for installing a rubber (EPDM) roof involve:

1. Roof Deck Preparation: The existing roof surface is cleaned and prepared. Any necessary repairs or modifications are made to the roof deck.
2. Insulation Installation (if required): Insulation boards are installed on the roof deck to improve energy efficiency.
3. EPDM Membrane Installation: The EPDM rubber membrane is rolled out and positioned on the roof deck. The installation method can vary, including fully adhered, mechanically attached, or ballasted.
4. Seam Sealing: Seams between the EPDM sheets or rolls are carefully sealed using specialized tapes or adhesives to create a watertight seal.
5. Flashing Installation: Flashing is installed around roof penetrations (vents, pipes, etc.) and at the edges of the roof to prevent water intrusion.
6. Inspection and Finishing: The installed roof is inspected for any defects or issues. Any necessary adjustments or repairs are made, and the edges of the roof are sealed and secured.

A qualified roofing contractor will ensure proper installation according to manufacturer specifications.

Can you repair a rubber roof?

Yes, rubber roofs are relatively easy to repair. Minor damage, such as small punctures or cracks, can be fixed using patches of EPDM membrane material and specialized adhesives or sealants. For larger repairs or more extensive damage, sections of the membrane might need to be replaced. Hiring a qualified roofing contractor for repairs ensures they are done properly and maintain the roof's warranty.