Header Concrete Roof Repair


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:

 

Water-Based
Ambient Air Temperature below 55°F (10°C) or above 100°F (37.8°C)
Substrate Temperature below 45°F (7.2°C) or above 130°F (54.4°C)
Humidity: above 85% (allow extended drying time above 80%)

 

Solvent-Based
Ambient Air Temperature below 45°F (7.2°C) or above 95°F (35.0°C)
Substrate Temperature below 35°F (1.6°C) or above 120°F (48.8°C)
Humidity above 95%
  • 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.
Product Acrylic System Solvent System
PrimeLock Primer Bonding Primer
Seam Products PolyScrim Roofing Fabric
Acrylic Elastomeric Caulk
PolyScrim Roofing Fabric
Butyl Rubber Caulk
Base Coat / Top Coat Acrylic Elastomeric Coating Butyl Rubber Coating
Aromatic Urethane Coating

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.
Acrylic System Primer Base Coat Top Coat
Concrete Roof
Standard System
5-year (32 total mils)
PrimeLock Bonding Primer
0.50 gal. / 100 s.f.
Acrylic Elastomeric Coating
1.50 gal. / 100 s.f.
Acrylic Elastomeric Coating
1.50 gal. / 100 s.f.
Concrete Roof
Standard System
10-year (40 total mils)
PrimeLock Bonding Primer
0.50 gal. / 100 s.f.
Acrylic Elastomeric Coating
2.00 gal. / 100 s.f.
Acrylic Elastomeric Coating
2.00 gal. / 100 s.f.

 

Solvent System Primer Base Coat Top Coat
Concrete Roof
Standard System10-year (36 total mils)
Aromatic Polyurethane Coating
1.50 gal. / 100 s.f.
Aromatic Polyurethane Coating
1.50 gal. / 100 s.f.
Concrete Roof
Standard System
10-year (36 total mils)
Butyl Rubber Coating
2.50 gal. / 100 s.f.
Butyl Rubber Coating
2.50 gal. / 100 s.f.

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

• Surfaces not to be coated shall be protected during the application of the system. If protection is not feasible, surfaces shall be restored to their proper condition by cleaning, repairing or replacing.
• In conjunction with the final inspection, all debris, containers, materials and equipment are to be properly removed from the job site. Grounds are to be cleaned undamaged and acceptable to the owner.
• Dispose of all containers in accordance with state and local environmental regulations.
• Reflectivity of coatings may be reduced if roof surface is not cleaned regularly.

3.07 PROTECTION

• Control overspray especially during windy conditions.
• All parking areas adjacent to (within 75 feet ) the work area are to be cleared and roped off.
• Protect work from damage due to subsequent construction activity on the site.
• Roof coatings are not traffic grade. Areas surrounding roof top equipment may be reinforced by embedding PolyScrim fabric and applying a thicker membrane (40 – 50 mils). Walk pads should be used if frequent maintenance traffic is expected.

 

CONCRETE ROOF:1. Read all label instructions before beginning. Always run a test patch first to ensure that proper adhesion and drying occurs and the product works to your satisfaction. The whole concrete roof is cleaned and power-washed, then flood coated with epdmcoatings Elastomeric, pure acrylic primer. 2. Repair large holes with concrete patch. Seam tape large cracks with epdmcoatings adhesive seam tape. 3. For best results, topcoat the concrete roof surface with epdmcoatings Acrylic Primer, butyl rubber coating and Aromatic urethane coating.








  • Testimonials

    • Ronald S
      Virginia Beach VA

      I ordered a gallon of Liquid Rubber last summer, and inquired if it could be spread with an adhesive applicator trowel; the sales person was not aware of this having been tried. I tried using a commercially available trowel with 4 sawtooth teeth per inch, and 0.135 inch notch depths, holding the trowel at about a 45 degree tilt.
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    • G Sorrell
      Lufkin,TX
      Diboll Lumber Operations

      Everyone was SUPER helpful and knew the product, properties and application methods well. I applied to product on the trailer in about a 2-hour period one evening. It was tricky with the application, from a novice who had not done this before.
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    • H&W Property Management

      Donna,your staff and your customer service is the reason we buy from you. You had asked us several months ago if we would write up something for your Website. We wanted to get some additional orders first before coming to conclusions.
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    • T. Basset

      We have completed the resurfacing of our commercial roof back in April and ordered a few more pails for areas where we probably did not apply it thick enough. Just wanted to share these photos with you.
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    • B & T Contracting

      You have a great product here and we will be ordering for future jobs we have. We were a bit skeptical at first but when it was fully dry it looked as if we installed a new 15,000 sq piece of sheet EPDM.
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    • Jed L
      Biloxi MS

      This will be the third time our firm has ordered. We completed a project in 05 in the fall and waited for the winter. This was actually the first winter without any leaks. Great product overall.
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