Do not install on the chamfered edges of wood plank. Made of polyethylene and rubberized asphalt, this membrane prevents water that has slipped under shingles from penetrating to ceilings below. • Do not walk on the membrane until it bonds to the substrate. MFM Wind & Water Seal™ adheres aggressively to most clean, dry substrates including metal, plywood, OSB, foam insulation, house-wrap, rigid vinyl and masonry. Then attempt to try to tear off the Ice and Water and use that piece of plywood for something. It is expected to rain/snow for the next six straight days--- 2 … Re: Ice and Water Shield over whole roof You know this water-vapor through plywood is an intersting theory, but I am not convinced it is true. ), do I have to re-deck my roof with OSB or plywood when replacing the asphalt/composition roofing? Answer Save. What really helps this process is attention to detail when it comes to applying the product, then leaving the plywood in the sun (which on a roof is super easy) to … Grace Ice & Water Shield also offers leak protection in trouble prone spots like valleys, skylights, protrusions and other flashing areas. Cover WinterGuard as soon as possible with a permanent roof surface. Click here for detailed drawings displaying proper installation at eaves, valleys, skylights, chimneys, and other important details…, Copyright © 2021 GCP Applied Technologies Inc. GCP Applied Technologies and GCP are registered trademarks of GCP Applied Technologies, Inc, Applied Knowledge: Insights into construction technologies, Proper installation of Grace Ice & Water Shield®, The right product and field support for subcontractors, How we protect buildings and owners' investment, Optimal mix designs for ready mix producers, How in-transit concrete management ensures high quality concrete, How roofing underlayments provide protection from Mother Nature, How waterproofing protects your project from leaks. (150 mm) in all directions. ft (3 ft x 36 ft) • … $186.18 $ … In cold … It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. A: It is never a good idea to install a roof over wet plywood or any type of roof sheathing. Company #2 recommends full coverage of entire roof deck with Ice and water shield. The barrier should extend from the lowest edge of the roof to at least 24 inches above the inside surface of the plane of the exterior wall. Cover within 90 days. Which would be the least problematic way to go? Work from the center of the valley or ridge outward in each direction and start at the low point and work up the roof. (150 mm) of the release liner in the opposite direction of the intended membrane application exposing the black adhesive. GCP requires side laps to be a minimum of 90 mm (3.5 in.) Install the ice and water shield membrane so that it laps securely over and bonds to the surface of the drip edge. Ice Shield is a Pain to Tear-off. Brendan Albano | May 19, 2017 03:34pm | #2. Align the membrane and roll in the intended direction of the membrane application. Faster application of the membrane in the straight-aways, as well as ease of membrane positioning in detail areas (valleys, around dormers, etc.). This self-adhered membrane is highly durable and comes in a 225 sq. Subfloor delaminated - should have use Advantech, but you are beyond that now. If nailing of the membrane is necessary on steep slopes during hot or extreme cold weather, backnail and cover the nails by overlapping with the next sheet. It should reach 3 feet beyond the inside of the wall and cover any valleys to prevent ice dams and wind-driven rain from reaching the sheathing. Cut the membrane into 10–15 ft (3–5 m) lengths and reroll loosely. When no ice and water barrier is used it will cause the plywood to become wet and prematurely damaged.If this is the case with your home, it will cost more money to have the roof replaced thanks to having to replace the bottom course of plywood as well. STEVE: OK. Now, this plywood, now around the edge, I guess, when the house was built they put wafer board down instead of plywood. For valley and ridge application, peel the release liner, center the sheet over the valley or ridge, drape, and press it in place. Valleys — Any valleys formed by projections such as dormers or roof direction changes are likely to trap more snow and cause larger ice dams. Use GRACE ULTRA™ underlayment for these roof types. The ice and water shield roofing material is made with a rubberized asphalt mixture that solves these problems. Hold the release liner with one hand and pull the roll along the deck with the release liner, leaving the applied membrane behind. Because the product has a very sticky backing, it not only adheres well to the wood roofing sheathing, but it also sticks well to the layer below when you overlap the pieces. (Click the image to enlarge it.). Watertight Laps — Membrane easily forms water-tight overlaps without special treatment. By design, ice shield adheres to the roof deck. © Copyright 2018 GCP Applied Technologies Inc. All rights reserved. Repair deck areas as needed before installing the membrane. Do not install directly on old roof coverings. Brendan Albano | May 19, 2017 03:34pm | #2. When finished with the roll go back to the beginning, reroll and pull the remaining release paper from the material, finishing the installation. GRACE ULTRA, ICE & WATER SHIELD, PERM-A-BARRIER, and RIPCORD are trademarks, which may be registered in the United States and/or other countries, of GCP Applied Technologies, Inc. COR-TEN® is a trademark registered in the United States and/or other countries, of United States Steel Corporation. Polyvinyl acetate glues resistant to boiling water are available. As far as workability, this product can at times be difficult. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status. MFM Wind & Water Seal™ is engineered for use under all roofing materials including metal, asphalt shingles, shake or concrete shingles, and clay tiles. Seals around fasteners — The rubberized asphalt layer in GRACE ICE & WATER SHIELD® membrane seals around fasteners, resisting leakage caused by water back-up behind ice dams, or from winddriven rain. Only 16 left in stock - order soon. MFM's Ultra HT Wind & Water Seal bonds to the substrate and seals around fasteners to limit damage caused by water penetration or leaks. Never got a lick of felt on as water was pounding down so hard our tool pouches were filled with water. Repair holes, fishmouths, tears, and damage to membrane with a round patch of membrane extending past the damaged area 6 in. The valleys should then be covered with metal flashing or weaving. We roof in the middle of … Contact your GCP Applied Technologies sales representative for assistance choosing the best product for your application. • All underlayments can be slippery, particularly when wet or covered with frost. Dead loads include the deck itself, the roofing system, HVAC units and, possibly, landscaping. Zip). If you expect the water/ice barrier to be effective, the plywood needs to be TOTALLY dry!!! Favorite Answer. Ice and water shield solves a problem for homeowners – it creates a waterproof seal for nails passing through that keeps melting ice out of the building. It can also be used in valleys, ridges, around chimneys, at eaves for protection against ice damns and wind-driven rain, or as a whole roof covering for secondary water resistance. … Grace Ice and Water Shield HT is an excellent high temperature ice and water barrier that follows in the footsteps of the original Ice and Water Shield, but is specially formulated to meet the higher service temperatures that are inherent to metal and tile roofs. Waterproofing Plywood: 3 Ways to Protect Plywood Plywood is an excellent material that is used in different types of construction. Don't interior finish until the moisture in the wood has stabilized! Once installed, the revolutionary membrane protects your home, by its three crown jewels — it sticks to the deck, sticks to itself forming watertight laps, and it seals around fasteners — for a barrier impenetrable to wind-driven rain, ice dams or anything else Mother Nature can precipitate upon a roof. This is great, but ice shield also creates other problems for roof installers. Therefore, if you need 4 feet of coverage, you need to use two full courses of ice and water protector to meet the requirements, even though this will end up covering almost 6 feet. Press the membrane in place with heavy hand pressure. 1 ICE AND WATER SHIELD A self-adhesive membrane applied along the roof’s perimeter from the eaves up. Relevance. Hold the release liner with one hand and pull the roll along the deck with the release liner, leaving the applied membrane behind.