The Roof Store Synthetic Roofing Underlayment is coated, woven polypropylene mechanically attached underlayment. Each roll measures 48 inches wide x 250 feet long (10 squares = 1,000 square feet). Surface technology provides good traction. When ordering more than 1,200 rolls, please expect to wait 40 days to manufacture and ship your order.
20 times stronger than organic felt.
Not Florida Approved and Not TDI Approved.
Non-slip foot traction results in safer installations. Proprietary formulated anti-skid bottom coating helps prevent synthetic underlayment shifting & slipping.
The Roof Store Synthetic Underlayment does not absorb moisture and does not become brittle in the cold.
The Roof Store Roofing Underlayment works well for asphalt shingle roofs.
Is The Roof Store Synthetic Roofing Underlayment Approved for Use in Florida or registered with the Texas Department of Insurance?
No, not registered in Florida and Not registered with the Texas Department of Insurance. Any previous claims of approval was due to miscommunication with the manufacturing plant due to language barrier. The manufacturer has their own claim of having the approval codes, but The Roof Store has not directly registered with these agencies. The manufacturer received their approval with CJI Group LTD (FL28795-R1). Do not use The Roof Store Synthetic Roof Underlayment in any state where it is not allowed to be installed.
Is Synthetic Roofing Underlayment waterproof?
Synthetic Underlayment is considered a secondary, water resistant barrier. Cap Nails or Cap Staples are the best to help preserve the Synthetic Roofing Underlayment’s water resistant features.
Is Synthetic Roofing Underlayment better?
It’s regarded as better than traditional felt #15 and better than #30. Grades of Synthetic Roofing Underlayment are differentiated by the GSM # and the approval codes the synthetic roofing underlayment has obtained/earned. The higher the GSM and the more approval codes in stricter jurisdictions, the better it can be qualified to claim a better performance on your roof.
Is Synthetic Roofing Underlayment breathable?
If you consider the permeability of moisture vapor escaping while keeping out the water as breathable, then Yes (synthetic roofing underlayment is breathable).
What is Synthetic Roofing Underlayment?
Synthetic Roofing Underlayment gives temporary shielding to the structure’s interior (from rain, wind, and UV rays) before the top layer of the roof system is installed. The roofing underlayment, when properly installed, can be left exposed for a specific amount of time depending on the Ultra Violet protection it was manufactured with. The synthetic underlayment also prevents the resin pockets in the decking to chemically react with the asphalt shingles.
What is Synthetic Roofing Underlayment made of?
Synthetic Roofing Underlayment is made of woven polypropylene.
Can Synthetic Roofing Underlayment get wet?
Yes, the synthetic underlayment can get wet, but technically if the roof system is working well, water will not penetrate the top level of the roof system.
Can you staple Synthetic Roofing Underlayment?
Check your local building codes before deciding to fasten the synthetic roofing underlayment to the decking. Some parts of the United States use staples while other parts of the country use cap nails. We hope you use Cap Nails.
Can you use Synthetic Roofing Underlayment as house wrap?
No.
How long can Synthetic Roofing Underlayment be exposed?
Ultra Violet light deteriorates many things, including synthetic underlayment. Times vary.
Is Synthetic Roofing Underlayment a vapor barrier?
Water-resistant underlayment may allow the passage of moisture vapor, but will reduce the passage of water in its liquid form.
Can Synthetic Underlayment be used instead of using tarp as temporary measures until the roof replacement or roof repair?
Synthetic Underlayment is not a substitute for tarp.
What is the best Synthetic Roofing Underlayment?
The best Synthetic Roofing Underlayment would be the underlayment with the best value proposition relative to the quality you receive while ordering a reasonable minimum. Example: the best price for the most number of approval codes with a low minimum of around 1 or 2 pallets.
How Many Plastic Cap Nails per Square of Underlayment?
Cap nails should be 12 inches apart and the more cap nails you use, the more wind uplift resistance your synthetic roofing underlayment.
Measuring the thickness of synthetic roofing underlayment in MILS is not very accurate because it requires a digital micrometer. A digital micrometer can assess the thickness of various types of plastic sheeting. What gets interesting is if the plastic sheeting has string reinforcement known as scrim/ scrim or string. If the plastic is measured over the scrim, them it will be thicker than if it is measured where there isn't any scrim. The scrim gives the plastic much more strength when it comes to tear and puncture resistance.
One mil equals 0.0254 mm (millimeter)
Prepare the roof decking by removing debris and old fasteners. Cover roof deck joints or H-Clips or plywood clips because they damage the syntetic underlayment products.
Minimize Exposure to rain or wind events while installing The Roof Store Synthetic Underlayment.
Fasten with The Roof Store Cap Nails (Ring Shank) in locations specified (and marked) on The Roof Store Synthetic Underlayment. Nails without plastic caps or staples can damage The Roof Store Synthetic Underlayment and could cause leaking. Please fasten the plastic cap nails properly by hammering them flush and perpendicular (not at an angle) to the roof decking surface that is in great condition. When re-roofing, repair decking before installing The Roof Store Synthetic Underlayment. Broken, cracked, over-driven cap nails should never be installed or left installed. Place fasteners 6” on-center on side lap area and stagger two rows of 12” on-center.
The Roof Store Synthetic Underlayment covers the decking and it is designed to be covered with mechanically attached asphalt shingle roofing systems and should not be visible when roof has been installed properly.
Side and End Laps are areas where wind and wind driven rain can penetrate the roof system. Install The Roof Store Synthetic Underlayment with 6 inch side lap and 12 inch end lap.
Below is the Florida Building Code Approval that the manufacturer gave us that proves they applied and received their certification. We put our logo on their product.
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