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9. Mule-Hide recommends the use of PVC Coated Metal for scuppers and metal overflows. ' 10. AIi Mule-Hide PVC Coated Metal shall be fabricated to form hemmed edges to prevent sharp metal edges from cutting the membrane, except when used in conjunction with wood nailers. ' B. PVC M�nbrane Flashings 1. All membrane flashings are to be installed concuRently with the roaf inembrane as the job progresses. Temporary flashings are not allaw�ed without prior writt�n approval from the Mule-Hide Warranty Department. Should any water peneUate the new roofing because of incomplete flashings, the affected areas shall be removed and replaced at the contradtor's expense. 2. All PVC Membrane flashings shall be fully adhered using Mule-Hide's PVC Bonding Adhesive. The following conditions must be met: a. All surtaces to be fully adhered should be compatible, dry and smooth with no excessive surface roughness. tf an existing asphalt surtace is present, a 1/2" minimum plyvwod, 9 oz. polyester felt, acceptable insulation board or 26-gauge minimum galvgnized metal barrier must be plaoed over the asphaltic surface. b. After the proper surface has been prepared, Mule-Hide's PVC Bonding Adhesive shall be applied using a minimum 1/2" nap paint roller at a rate of approximately 60 square feet per gallon a# "fir�shed surface area" depending on the type of substrate. App1y adhesive in smooth even coats, avading globs, puddles or other types aF irregularities. c. Muie-Hide PVC Membrane used as a flashing shall be cut to a woekable length. Adhesive should be applied to the area of substrate to be flashed and to the back � the PVC membrane at a rate of approximately 120 square feet per g�lon. Coverage rates will vary depending on substrate and environmental conditions. Let adhesive dry sufficierrtly to be tacky but not produce strings when touched with a dry, dean finger. Note: When the PVC membrane is mated to the substrate this will provide an approximate "finished coverage rate of 60 square feet per gallon". d. Carefully rdl the membrane onto the coated substrate. Avad wrinkling membrane when applying to substrate. The amount of adhesive that can be successfiully applied to the membrane will vary depending on ambient temperatures, humidity and manpower. After mating membrane to the substrate, cargfully roll the membrane with a 2" wide rubber hand roller to prom�e maximum positive corrtad between the membrane and the substrate. Overiap all adjacent flashing sheets a minimum af 2". The PVC Membrane flashings shall extend a minimum of 6" onto the field sheet. There shall be a minimum 1-1/2" hot-air weld in front ofi the fastener plates. Alt side laps are to ove�lap a minimurn of 2" and welded. e. Do not apply PVC Bonding Adhesive�to seun areas that will be hot air welded together. 3. All flashings shaU extend a minimum of 8" abave roo�f inembrane ievel where possible unless previously accepted by the owner or his representative and the Mule-Hide Warranty Department. 14