Concrete Roof Repair

Waterproofing concrete with roof coatings is an important task on concrete structures for roof repair and preservation. Many roofs throughout the world are constructed using poured concrete. These concrete structures are usually made with reinforced steel. They are inexpensive but require a great deal of maintenance to keep them from leaking since they shift, move, and dissolve easily. The problem with concrete is that it is concrete. Concrete is made up from several ingredients including calcium carbonate and sand. Calcium Carbonate is a plentiful substance that comes from the dead skeletons of sea life. These plentiful substances dissolved quite easily in very wet environments unless they are protected.

I. GENERAL

1.01 SUMMARY

• Waterproofing concrete with roof coatings is an important task on concrete structures for roof repair and preservation. Many roofs throughout the world are constructed using poured concrete. These concrete structures are usually made with reinforced steel. They are inexpensive but require a great deal of maintenance to keep them from leaking since they shift, move, and dissolve easily. The problem with concrete is that it is concrete. Concrete is made up from several ingredients including calcium carbonate and sand. Calcium Carbonate is a plentiful substance that comes from the dead skeletons of sea life. These plentiful substances dissolved quite easily in very wet environments unless they are protected.
• This outlines Concrete Roof repair, coating and restoration procedures for the application of Fixallroof Coatings to fix roof leaks and extend the service life.
• These are suggested specifications and actual application requirements may vary and are the responsibility of the installer.
• The manufacturer’s application instructions for each product used are considered part of these specifications and should be followed at all times.

1.02 SUBMITTALS

• Submit product data sheets, technical data verifying physical properties of materials and installation instructions.
• Upon request, submit test reports demonstrating compliance with specified design and performance criteria.
• Submit material safety data sheets.

1.03 QUALITY ASSURANCE

• Supplier Qualifications: The Fixallroof Coating System for concrete roofs, as supplied by Fixallroof Coatings, is approved for use on the project.
• Installer Qualifications: Utilize an installer with demonstrated experience on projects of similar scope and complexity. The installer shall be approved by Fixallroof Coatings to apply the system. Manufacturer’s written verification of applicator approval is required.

1.04 DELIVERY, STORAGE AND HANDLING

• Delivery: Deliver materials in manufacturer’s original, unopened, undamaged containers with identification labels intact.
• Storage: Store all materials at temperatures between 55°F – 90°F (12.7°C – 32.2°C) with careful handling to prevent damage. Do not store at high temperatures in direct sunlight. Protect from exposure to harmful environmental conditions.
• Protection: Protect all materials from freezing and other damage during transit, handling, storage and installation.

1.05 PROJECT/SITE CONDITIONS

• Substrate should be structurally sound.
• No application of materials are permitted if inclement weather, precipitation, freezing temperatures are expected within 24 hours or if the following conditions are present:

• Recommendations for material consumption are for ideal conditions. Product coverage rates may vary due to uneven application, surface texture, absorptive properties, wind conditions while spraying and/or other variables.
• A moisture survey or other assessments may be needed to determine the presence of wet insulation under existing roofing material.

1.06 DETAIL WORK

• This specification may not outline all procedures for preparation and finishing of penetrations, drains, flashings, etc. This work should be outlined separately by the contractor before the work commences and shall be performed observing good trade practices.

II. PRODUCTS

2.01 FIXALLROOF RESTORATION SYSTEM

• The elastomeric roofing system for polyurethane foam roofing is a spray-applied roof coating supplied by Fixallroof Coatings.

2.02 PRODUCT SUBSTITUTIONS

• Use Butyl Rubber Coating, Aromatic Polyurethane Coating instead of PrimeLock Bonding Primer as the adhesive for PolyScrim when installing the Solvent Based System.

2.03 RELATED MATERIALS

• Roof accessories, flashing, seam tapes and similar materials shall be approved by the manufacturer. All materials used shall be applied in accordance with its manufacturer’s recommendations.

2.04 EQUIPMENT

• Visit the Fixallroof website for recommended spray equipment guidelines, or consult the spray equipment manufacturer directly.

III. EXECUTION

3.01 MANUFACTURER’S INSTRUCTIONS

• Comply with the instructions and recommendations of the roof restoration system manufacturer.
• Comply with manufacturer’s product data, including product technical bulletins.

3.02 EXAMINATION

• Verify conditions are acceptable for application of roof restoration system .
• Inspect concrete roof to receive roof coating and make sure they are clean, sound, properly prepared and free of moisture, dirt, debris or other contaminants.
• A comprehensive moisture survey is to be conducted to locate and identify areas of trapped moisture. The EnergyGuard Butyl Rubber Coating is a vapor barrier and may blister if moisture is present when the coating is applied.
• Verify that all on-roof items, penetrations, mechanical equipment, hvac drains are in place and secure. All airconditioning and air intake vents should be suitably protected or closed.
• Verify that areas within the vicinity of the application area as protected from overspray.
• Verify that all roof drains, gutters, downspouts, catch basins are clean and in working order.

3.03 PREPARATION

• Cleaning: The entire concrete roof surface must be clean, sound, dry and free of any contaminants that would interfere with the proper adhesion of the roof coating. This may require pressure washing, scraping, wire brushing or other means necessary while observing responsible trade practices. All loose paint should be removed before applying any product.
• Ponding Water: Contractor shall make every effort to mechanically eliminate all ponding water areas on the concrete roof prior to application of any roof coating product.
• Repairs: Wet roof insulation and damaged membranes are to be removed and replaced as necessary to match existing specified material. All ponds that hold water over 1″ for more than 48 hours should be mechanically diverted.
• Do not apply coatings until all unsatisfactory conditions have been corrected in a manner acceptable to the original polyurethane foam roofing manufacturer.

3.04 APPLICATION

• Inspect concrete roof to receive roof coating. Always perform a coating adhesion test before doing the entire job.
• Primer: Entire concrete roof shall be primed using the appropriate primer and following the application rates specified in the table below. Bare concrete may not need to be primed depending on the results of the adhesion test.
• Seams: All joints, penetrations and parapet walls should be flashed using PolyScrim Fabric and PrimeLock Bonding Primer. Apply a thin coat of PrimeLock Bonding Primer over the seam and roll out 6″ fabric over the seam and apply another coat of PrimeLock Bonding Primer over the fabric. Encapsulate the fabric with the appropriate elastomeric coating and feathering it at least 2″ to 3″ past the edge of the fabric. Substute PrimeLock Bonding Primer with the appropriate topcoat as outlined in 2.02 above.
• Base Coat: Apply appropriate base coat using the application rates specified in the table below. Allow to dry thoroughly for 8-12 hours depending on humidity and temperature.
• Top Coat: Apply appropriate top coat in a cross-hatch technique using the application rates specified in the table below. Allow to dry and cure before exposing to foot traffic.
• Standard System: Use the Acrylic System on concrete roofs with good slope and no ponding water issues. Use the Solvent System when outdoor temperatures are no longer favorable for acrylic coatings.

3.05 FIELD QUALITY CONTROL
• Utilize manufacturer’s field services to verify proper installation of the system. Areas that do not meet the minimum standards for application specified herein shall be corrected at the contractor’s expense. Manufacturer’s inspection or verification shall not constitute acceptance of responsibility for any improper application of material.

3.06 CLEANING

3.07 PROTECTION