Roof Surveys may include:

-   Visual Inspection – Having a roofing expert inspect the building exterior can often uncover problems not noticed by maintenance staff.

-   Measurements - For AutoCAD drawings, and to determine area and dimensions for budget estimates.

-   Core Testing - To determine the construction and condition of roof membrane, insulation, decking, etc.

-   Moisture Probes - To check for entrapped moisture at core locations.

-   Photos - To document construction and condition details, for inclusion in written report. Aerial photos provide a good overall look at your facilities. They may be useful for planning, as well as job progress views.

-   Expert Witness Testimony - Disagreements can often be resolved with the assistance of roofing/waterproofing experts. Sometimes disputes over construction defects or roof leaks have to be resolved in court. We have a successful record in assisting clients in such cases.


MDT, also known as Non-destructive Scanning, utilizes high-tech electronic equipment to identify and locate moisture entrapped within roofs and/or walls.

Several types of technology are available, including infrared, dielectric, capacitance, and nuclear. For pennies per square foot, MDT can save vast sums in unnecessary re-roofing costs. 


  • MDT scans may be used on leaky roofs to zero in on where the water is getting in, as well as to identify the areas where water has saturated the underlying insulation and substrate(s). If a scan shows that only a portion of the roof is wet, and able to be repaired, it can save the cost of replacing the entire roof.
  • Scans can be useful after hail storms, tornadoes, and hurricanes when roof surfaces may appear undamaged, but may have experienced punctures, splits or microscopic cracks, in hard-to-see areas. Sometimes hidden damage does not show up as a leak for several years. By that time, extensive (and expensive) substrate damage may have occurred, PLUS... it may be too late to file insurance claims.
  • Scans are useful at the end of long roofing projects that may have been interrupted by intermittent rain. In these cases, moisture can sometimes become entrapped within or beneath plies, as a result of not allowing surfaces to dry adequately prior to continued roof application.
  • Entrapped moisture can form blisters (bubbles in the roof surface) months or years afterward. Blisters are not usually covered by roof warranties, but can compromise the roof system. By specifying MDT prior to acceptance of a project (by owner or architect), any entrapped moisture can be quickly identified and corrected before final payments are made to contractors.
  • MDT can be used to determine if moisture vapor has infiltrated from INSIDE certain types of buildings (industrial plants, refrigerated warehouses, etc.) through the deck and into the insulation and roof system.
  • MDT may also be used to determine hot or cold spots, indicating insulation concerns.



A written report documents what was found in the survey. A typical report would include:

  1. Construction Details
  2. Conditions Noted
  3. Action Plan (Options, Recommendations, Budget Estimates & Timetable)
  4. Photos
  5. AutoCAD Drawings


  1. Research various manufacturers, systems, products, etc.
  2. Narrow the field to a few viable options.
  3. Contact manufacturers to discuss proposed applications.
  4. Assist with budget estimates.


1.   Written specification guidelines.

2.    Detail drawings (to illustrate details and provide dimensions).

3.    Assistance in selection of qualified contractors.

4.    Pre-Bid Meeting with bidders.

5.    Pre-Construction Meeting with installers.
6.    R
eview of bids and submittals.



1.   Monitor contractor’s work to ensure compliance with project requirements.

2.   Inspect completed work.

3.   On-site progress photos of work-in-progress and completed work.

4.   Aerial progress photos.

5.   Final Inspection as required for issuance of warranties.

6.   Non-destructive Moisture Detection Testing (MDT) of new roofs to ensure against entrapped moisture.

7.   Follow-up report.