CASE STUDY
Squamish Public Library
District of Squamish, BC
The Squamish Public Library serves as a civic anchor for the District of Squamish, with a 28-year-old modified bitumen roof nearing the end of its expected service life. Ahead of capital planning, the District retained Pinpoint to conduct a full roof moisture and thermal survey — determining exactly how much of the aging membrane was still performing, and how much needed to come out.
Pinpoint’s field team scanned the entire 12,834 sq ft roof area in a methodical grid pattern, combining infrared thermography with capacitance moisture scanning and core sampling to isolate trapped moisture beneath two previous repair patches.
12,834
Sq Ft Roof Surveyed
20
Sq Ft Wet Coverboard Found
F
Overall Condition Grade
~1
Yr Service Life Remaining
July
2025 Survey Completed
// Survey Scope & Methodology
A full-grid scan of a 28-year-old roof
Pinpoint scanned the entire RA-1 roof area in a methodical grid pattern using an RWS roof scanner and Tramex capacitance meter, cross-verified with a DJI Mavic 3 Enterprise thermal drone. A calibration core cut in a known-dry area established the moisture baseline before the survey began.
Elevated readings over two prior repair patches were hand-verified with a Tramex moisture probe and confirmed with core cuts — while a third core, taken in a soft spot, came back dry. HVAC equipment, curbs, and rooftop projections were also checked and found dry throughout.
// What We Found
A roof at end of life — but moisture contained to two patches
The membrane itself was graded Failed, with granule loss, blisters, aged caulking, and wet insulation typical of a system well past its 20-year design life. Despite that, moisture scanning found trapped water in only 20 sq ft — about 0.16% of the roof — concentrated beneath two prior torched-cap-sheet repair patches. The insulation beneath those wet zones tested dry, and thermal imaging confirmed the majority of the field membrane running cool and uniform, with warmth limited to the perimeter and penetrations.
Roof RA-1
12,834 sq ft · 0.16% wet, insulation dry
Field Membrane
Failed · 28 years old, ~1 yr life remaining
HVAC & Penetrations
All readings dry at time of survey
Recommendation
A full roof replacement was not necessary. With the wet coverboard isolated and the underlying insulation confirmed dry, Pinpoint recommended a cost-effective re-cover: remove the wet membrane and coverboard, retain the existing dry insulation, and install a new coverboard and compatible roofing system — an estimated $3.00 per square foot savings versus full system replacement.
Project Participants
Client :
District of Squamish / Garland Canada
Location:
37907 Second Avenue, Squamish, BC
Roof System:
Concrete deck, polyiso insulation, modified bitumen (SBS)
Survey Method:
RWS roof scanner, Tramex probe + DJI Mavic 3 Enterprise thermal drone
Delivered by:
Pinpoint Inspections
Squamish Public Library
Case Study PDF