Commercial

Roof System: Cold Asphalt Built Up Roof System

Area: 34,900 sq. ft.

Project Scope of Work:

• Conduct a thorough roof analysis of the existing roof system with the owner’s representative to determine the condition of the existing roof system and an appropriate course of action that meets with the client’s needs.
• Remove existing roof system to the existing steel deck and replace damaged decking.
• Install new mechanically attached thermal insulation and adhered cover board in cold adhesive. Installed four plies of a base sheet all adhered in cold asphalt adhesive.
• Installed the gravel in cold asphalt adhesive.
• Installed one ply of base flashing covered in a high performance modified bitumen mineral surfaced cap sheet all heat welded.
• Installed new field formed fascia system.

Project Intent:

• The roof has had severe leaks over the years that disrupted their daily operation and damage to expensive electronic equipment and inventory used for broadcasting their shows.
• We found that one of the major issues after surveying the roof, was the membrane at the gutter edge had failed. The insulation had become saturated over time compressing and causing a ponding condition here and in several other areas throughout the roof. Another issue was severe corroding of the edge metal and failure of the sealant at the splice plates; a high performance factory fabricated fascia system was specified to eliminate this issue in the future.
• After discussing the different roof system options with the owners representative, there was a concern of odors entering into the building, and using hot asphalt in the public areas around the building therefore we recommended a cold adhesive roof system. This location highly visible to the public is used for broadcasting so it was an important concern to the owner that the project be very clean and organized.
• During the project, there were several sensitive areas that need to be protected during the demolition phase. The contactor used protective covers and other means to protect these areas.
• Overall the project went very well and the client was very happy. At the conclusion of the project, the client had a pig roast on site inviting everyone involved with this project.

Roof System: Asphalt Built Up Roof System

Area: 4,400 sq. ft.

Project Scope of Work:

• Conduct a thorough roof analysis of the existing roof system with the owner’s representative to determine the condition of the existing roof system and an appropriate course of action that meets with the client’s needs.
• Remove existing roof system to the existing steel deck and repair any damage.
• Install new mechanically attached thermal insulation and adhered cover board in hot asphalt adhesive. Installed four plies of a glass reinforced asphalt coat membrane all adhered in hot asphalt adhesive.
• Install high performance asphalt adhesive and gravel.
• Installed three ply of base flashing covered in a high performance reflective coating adhered in hot asphalt.
• Installed new field formed fascia system.

Project Intent:

• The existing roof system had exceeded its service life and was showing signs of deterioration due to blistering of membrane, random splitting and had several leaks.
• The plant engineer decided a high performance roof system that would hold up under heavy foot traffic from ongoing maintenance of roof top equipment and access to other sections of the building.
• The engineer also wanted a robust and repetitive system with a 20 year NDL warranty. So a heavy duty polyester base sheet with three plies of fiberglass reinforced Type VI asphalt felt covered in gravel all adhered in hot asphalt was specified for a long service life.

Roof System: Replacement Modified BUR System

Area: 47,000 sq. ft.

Project Scope of Work:

• Conduct non-destructive infrared scan roof examination to determine overall condition of light-weight concrete deck.
• Remove existing roof membrane and all damaged light-weight concrete. Replace all damaged light-weight concrete.
• Mechanically attach high performance polyester reinforced base sheet over roof area. Install 3 ply configuration of Type VI fiberglass reinforced ply sheets in hot modified asphalt.
• Install flood and gravel flood coat using cold applied modified coatings, formulated to withstand ponding water.
• Install 3 ply base flashing system consisting of 2 ply Type VI, fiberglass reinforced ply sheets and a 4 mil modified bitumen membrane with mineral surface.
• Install specifically designed coping cap.
• Issue 20 year NDL Warranty.

Project Intent:

• This roof membrane had been leaking for many years and there was a concern that the light-weight concrete deck was damaged.
• The wall design is precast concrete with deteriorated sealant joints between the panels. A field fabricated coping was in install to cover and seal the problem.
• RTA wanted to install a high performance system that would protect their assets over the critical garage area and provide them with a 20 year NDL Warranty.