b'For best results, building owners should obtain the advice of experienced professionals that will assist with determining the best solution.insulation can help direct water around the equipment to allowProtective Roofing for proper drainage. For blockages caused by concrete pavers with insulation bases that are used for walkways or as setting surfaces, drainage slots can be cut into insulation to let water flow belowSafety Productsthe pavers towards the drains. There is also the option of having walkways with pedestals that allow water to flow beneath them.Other types of surface retrofits use material infills with ce-mentitious materials, rubber polymer or additional asphalt flood coats with gravel to build up the surface at low points of the roof. Where pooling water is desired to be reduced prior to the next roof replacement cycle, these materials can be placed at low spotsBYto displace water and promote better drainage. The long-term performance of these products will vary based on the materials used and the harshness of the climate. On bituminous conven-tional roofs, the application of asphalt and gravel can effectively improve drainage.Mechanical Pump Drains Another option to remove water from roof areas is the use of a pump. A power-operated or solar-powered pump can be used to siphon water off of a roof and direct it into drains or over the edge. While power-operated pumps are typically only used to remove water from a roof in emergencies, more passive-type pumps, including solar-powered, can be permanently placed at poorly drained roof locations. The PR 100 Guardrail SystemConclusion is an efficient and practical perimeter guardrail that allows youStanding water can be detrimental to the health and longevityto work right to the edge of the roof.of a buildings roof and its occupants. Water remaining 48 hours Meets and exceeds OSHA & WCB requirementsafter rainfall can cause many complications, from increased main-Accommodates: parapets and cant stripsEasy to installtenance, reduced roof service life and increased risk of leaks. Fol-lowing governing plumbing code requirements and using smart Provides unobstructed access to roof edgeand practical drainage design for a new roof are the best ways to set yourself up for success and a dry roof! A roof that is already constructed and struggling with standing water still has a number of retrofit options to help with problem drainage.For best results, building owners should obtain the advice of experienced professionals that will assist with determining the best solution. Dont get sucked into reusing a poorly function-ing drainage system or being sold ideas that wont hold water (or rather, end up holding too much water). A structural engineer needs to be engaged when the roof design load is in question, and an experienced professional can help navigate serviceability andThe PR 600 Mobile Fall Protection Systemdurability concerns to ensure the most appropriate drainage de- can be moved along the roof by pulling the cart to the desired working location, sign for your building and budget. Allen Lyte, B.Tech., C.E.T., RRO, is a principal partner at theproviding a safe working area. The PR 600 meets O.S.H.A. compliance 1926.502D.building science consulting firm W. Allen Partners Inc. that spe-cializes in roofing materials and their application, with over 27Roofing & Sheet Metal Super Service Centresyears of consulting experience and over 10 years of hands-on con-struction experience. Allen is a two-term past president of the On- EDMONTON, AB CALGARY, AB WINNIPEG, MB WESTON, ONtario chapter of the International Institute of Building Enclosure(780) 432-2786 (403) 255-8236 (204) 338-7613 (Weston Road)Consultants (IIBEC). He can be contacted at alyte@wapeng.ca. BARRIE, ON HAMILTON, ON TORONTO, ON (416) 745-4111Barb Kemp, B.Tech., C.E.T., RRO, is a principal at the building(705) 792-6683 (905) 560-2858 (416) 534-8421science consulting firm W. Allen Partners Inc. that has experienceWESTON, ONworking from the east to west coast of Canada. With over 24 yearsOAKVILLE, ON PICKERING, ON LONDON, ON (Signet Drive)of experience in the industry, Barb has worked in various construc- (905) 825-0034 (905) 426-4443 (519) 668-3626 (416) 744-2050tion sectors ranging from residential, commercial/industrial to in-stitutional. She can be contacted at bkemp@wapeng.ca. www.sparmarathon.caORN THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO ONTARIO ROOFING NEWSISSUE 4 2023/2417'