We hope you find this information helpful. Contact us to discuss how this may effect your future projects.
Low Voltage Electronic Leak Detection: Enables testing on wet (water present) waterproofing and roofing membranes.
High Voltage Electronic Leak Detection: Enables testing on dry (no water present) waterproofing and roofing membranes.
Developing roof management programs, performing roof inspections, and designing reroofs are still our main focus but we are excited to offer a full lineup of complimentary services to meet our clients’ needs. Please contact me to schedule a demo of this testing method or to learn more about what we do. We look forward to hearing from you.
Cale Prokopf, RRO
Rooftop solar installations and vegetative roofs are becoming popular with commercial and industrial building owners. These options have gained popularity because they can benefit the facility, tenant, or owner. A few of these benefits include minimizing energy costs, increasing marketability, and adding usable space. Developing a project with this many intricacies requires detailed review of the structure and all associated components.
Often the design of one of these systems is the product of a financier, electrician, or architect. No two buildings are alike so each design must be truly unique to that facility. These one-of-a kind creations result in designers and owners unknowingly overlooking items that affect the lifecycle cost of the installation. We often find that the roof system itself is ignored during the initial project design. Please consider the following questions when/if you are thinking about adding a rooftop solar installation or vegetative roof to your building:
We recommend involving a roof design professional such as you preferred roof consultant during the design process to help resolve these often overlooked questions. It is much easier and less expensive to resolve issues prior to installation of the new system. Don’t hesitate to contact us if you have any questions or concerns about your next project.
After a very dry summer we are beginning to see more precipitation. With this rain come lower temperatures and eventually the freeze/thaw cycle. This cycle of freezing and thawing can cause minor issues to rapidly worsen. Regardless if you own your building or manage the facilities of others, now is the time to take advantage of this dry, warmer weather and schedule your winter roof evaluations.
It may be as simple as removing rooftop debris, applying a few patches, or clearing roof drains. A roof evaluation performed now will cost only a portion of what emergency repairs may cost once ice and snow have accumulated. Rooftop issues that are found and corrected now will save you the cost and inconvenience of bigger issues.
As you know, recent storms have torn through the Midwest causing severe damage to countless facilities in the St. Louis area. We hope that you made it through the storms unscathed. If not, and you need assistance with roof related issues, please contact us to schedule a consult.
We advise everyone to choose their roofing professionals wisely during this time of emergency and avoid “storm chasers”.
During a recent Better Understanding of Roofing Systems Institute (BURSI) seminar some great information was presented. A segment of the seminar focused on the rhyme and reasoning to specifiy one roof system over another. We felt this could benefit anyone that may be budgeting roof replacements or dealing with replacement due to recent storm damage.
Not all systems are created equal and each system will have its strengths and weaknesses. There is no “perfect” system for all applications. The breakdown below sheds some insight into which roof systems are best suited for each particular installation.
Although it does not cover all the concerns, this table is a good starting point in the selection of a new roof system. There is much more that should be taken into consideration before investing into a new roof system such as interior/exterior environments, durability, building use, budget, etc. Don’t hesistate to ask questions on why a certain roof system is being recommended by your roofing professional. As always, we are here to help if you have any questions.
We hope everyone enjoyed their summer. From temperatures in excess of 105 degrees to the devastating hail storm, the weather this year has been unpredictable to say the least. As a result many of you ended up with unexpected and unwanted roof projects. We hope your projects are wrapping up or will be within the foreseeable future. Any uncompleted roof repairs or replacement could create further damage to the facility if not addressed before the winter months.
Those of you that are still working with insurance adjusters may want to consider involving an independent third-party consulting firm to help work toward a resolution. Insurance adjusters typically work alongside professional roof consultants to substantiate their findings, shouldn’t you? Contact us to discuss the needs of your particular project and any possible assistance we can offer.
Due to the extensive amount of roof replacements in the St. Louis area we felt it would be beneficial to many of you to explain the possible ills of installing a new roof system over an older, damaged, roof system. This can be an attractive reroof option for many reasons. This option reduces replacement cost, can be installed quicker than a traditional tear-off roof replacement, and roof system manufacturers will typically honor a NDL warranty.
As with most things, if it sounds too good to be true, it probably is!
Although widely practiced within the roofing industry, roof recover remains a controversial issue. Roof recovers often encapsulate moisture in the underlying roof system. Common issues surrounding this roof option are mold concerns, the drying of wet insulation, deck deterioration (dry rot of wood, disintegration of concrete, corrosion of metal), and fastener failures. Ongoing leaks and voided manufacturer warranties are all too common when a new roof is installed over an existing roof system. Most importantly, the installation may not meet current International Building Code (IBC) or the manufacturer’s warranty requirements.
What can you do to protect yourself against these issues in the case of a roof recover project? Randomly selected core cuts and visual observation are not enough investigation to determine the amount of underlying moisture within a roof system. Performing an infrared moisture scan will verify and document areas of subsurface moisture insuring that local code requirements are satisfied. The infrared scan will allow you to mark and replace any wet or “suspect” areas in the existing roof system during the new roof installation process. The scan should also provide as documentation to ensure manufacturer warranty compliance as installation of new roofing over wet substrate will lead to systemic issues and premature roof failure.
Make sure to perform your due diligence when selecting a firm to complete an infrared moisture scan. The company you select should have a minimum of 10 years’ experience using their infrared equipment and should be able to provide training certification from the equipment manufacturer. This is important because dissimilar heat dissipation readings show up as “hot spots” or “anomalies” and are common. These readings are not necessarily wet insulation but could be areas of sediment build up, interior lighting, or cupped insulation. Prior to marking the roof, anomalies should be confirmed with secondary non-destructive equipment such as nuclear or capacitance meters. Areas marked on the roof should then be confirmed through test cuts to verify and finalize the findings. What good is an infrared scan if it’s done incorrectly? We perform infrared scan services regularly and can offer a multitude of references and samples. Contact us for more information or to discuss scheduling this service for your facility.
RoofTech Consulting, Inc
In June, the Polyisocyanurate Insulation Manufacturers Association (PIMA) announced its Quality Mark certified R-value program is being updated to incorporate a new test method for determining long-term thermal resistance (LTTR). As you may know, R-value is a measure of thermal resistance used in the building and construction industry. Under uniform conditions, it is the ratio of the temperature difference across an insulator and the heat flux. The polyisocyanurate product is NOT changing any current chemical makeup. What is changing, is the test method (LTTR) process of calculating R-values. As a result, new LTTR values are going to decrease for roof insulations from their current values. Please note that this change will not affect wall insulations. Even with these changes, polyisocyanurate is and will continue to be the greatest energy-efficient performance of any building insulation product on the market. To give you a couple of examples of these changes, the current R-Value of 2″ polyisocyanurate is currently 12.10. Effective January 1, 2014, that same material will have an R-Value of 11.4.
The 2012 International Building Code (IBC) requires that R-25 be met during all roof replacement (tear-off) projects. Fortunately, local municipalities still follow IBC 2009 or older guidelines. We do not foresee local municipalities adopting IBC 2012 for at least another 2-3 years. The combination of IBC 2012 and the lower R-values given to polyisocyanurate insulation effective January 1, 2014 will require at least another 1″ – 1.5″ of insulation be installed just to meet local code on future roof replacement project. More material obviously results in an increase in roof replacement costs. We recommend adjusting future roof replacement budgets to reflect these additional costs.
We hope you find this information beneficial. Feel free to call or email if you have any questions about this issue.