TO: Chair and Members of the Board
FROM: Diane Colonna, Executive Director
DATE: April 12, 2017
Title
CONSIDERATION OF ROOF REPAIR/REPLACEMENT OPTIONS FOR CRA OFFICE BUILDING
Body
BACKGROUND: There is current evidence that the CRA office building roof is deteriorating. While earlier indications of water intrusion was limited to one or two locations in the ceiling, the most recent heavy rain that occurred in late March demonstrated a few new locations where leakage is noticeable. While the water intrusion/roof leakage can still be characterized as relatively minor, the surface of the roof continues to degrade with time. It is recommended that action be taken prior to the summer rain season.
The existing roof system is modified bitumen over lightweight concrete insulation and metal deck. It is in excess of 30 years old. To date, the roof has been repaired on an as-needed basis, both by the prior owner and last fall by the CRA through patching obvious cracks and seams in the roof membrane. While this patchwork held up for a few months, it is clear that a more comprehensive solution is necessary at this time.
In an effort to find the most cost effective solution, we have solicited input and proposals from six roofing companies. Their proposals fall into two general categories: (A) a medium term (10+ yrs.), lower cost solution using a liquid applied coating to waterproof over the existing roof or (B) a long term (20+ yrs.) full roof replacement.
The waterproofing system involves an acrylic or urethane liquid which is applied in multiple coats and binds to the existing roofing material, creating a watertight seal over the roof. It will eliminate the water intrusion to the building at an estimated cost of $25,000 (including minor repairs to the roof substrate as needed). A permit is normally not required for this type of repair, which can be accomplished relatively quickly (7 working days) with minimal disruption to office operations. The CRA bui...
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