Products Description
Synthetic roofing underlayment is an excellent 100% synthetic roofing underlayment designed for 15 lb/30lb asphalt felt replacement.
It can be used for steep slope roofing to provide a lasting layer of protection against wind driven rain, shingle blow offs and damage caused by adverse weather conditions. It is designed to use under wood,asphalt, synthetic shingles, residential metal and cedar shakes. It meets and exceeds all required industry standards.

Other grammage and color are available according to requirement

Production Specification
1.Much Stronger than regular Type 15, 30 felt
2.Resistant to tear & stretch around fasteners
3.Skid-resistant polymer coating provides traction and a safer working surface
4.Wider offering greater coverage
5.100% recyclable material, manufactured from recyclable material
6.More effective and lighter in comparison to regular Type 15lb felt
7.Won't crack, buckle or warp: Perfect synthetic roofing underlayment will support no - mold, no oil leaching and has no hazardous properties.
8.Enhanced UV Resistant
9.Pre-printed nailing pattern and overlap lines for speedy installation

Building Code and Roofing Standard Compliance:
ASTMD226
ASTM D4869



Non-slip layer is the upper layer made by non-woven and it can be printing with over lapping lines and logos etc.
Woven fabric layer is made by high tensile strength woven fabric, mainly used as tensile strength layer.
Coating layer is used as waterproof layer.
We have the following series of synthetic roofing underlayment products:
1, Perfect Underlayment ECO Grade: SRL-16 (16 lbs per roll)
2, Perfect Underlayment CLASSIC Grade: SRL-21 (21 lbs/per roll)
3, Perfect Underlayment ADVANCED Grade: SRL-22 (22 lbs/per roll)
4, Perfect Underlayment SUPER Grade: SRL-32 (32 lbs/per roll)
5, Perfect Underlayment ROYAL Grade: SRL-35 (35 lbs/per roll)
For detailed technical data, installation guidance, MSDS etc. pls kind send email to us for assistance.

Product Application
Synthetic roofing underlayment is an excellent 100% synthetic roofing underlayment designed for 15 lb/30lb asphalt felt replacement.
The underlayment on a roof is a membrane that is applied to the plywood or 'deck' of your roof as an extra layer of water penetration protection before your shingles are installed.
It provides your roof with an extra layer of protection that shingles alone can't match.It can be used for steep slope
roofing to provide a lasting layer of protection against wind driven rain, shingle blow offs and damage caused by adverse weather conditions.
It is designed to use under wood, asphalt, synthetic shingles, residential metal and cedar shakes.

American roof underlayment
For USA market, non-woven are laminated with PE woven with PE coating are used as roof underlayment and house wrap.
They performs very well in function with high tensile strength.
The roof underlayment is as below:
1,Non-slip layer is the upper layer made by non-woven and it can be printing with over lapping lines and logos etc.
2, PE woven layer is made by PE woven, mainly used as tensile strength layer.
3, PE coating layer is used as waterproof layer.
The color of PE woven, grammage, printing can be ordered according to customer's requirement.

Packaging & Shipping


Syhthetic Roofing Underlayment production 

Our Company

Jinan United Perfect Building Materials Corporation is a fully integrated manufacturer serving a global market for synthetic roofing underlayment, peel & stick underlayment, breathable roof membrane, radiant barrier, house wrap etc. for a better life. With our rich experience experience, we are proud to have intelligent engineers to provide consistent and high quality products using advanced equipment for nonwovens manufacturing, fabric weaving, coating, lamination and printing in our own factory to keep every process's quality. Our products can meet or exceeds all required building codes: ASTM D226 Types I & II, ASTM D4869, CAN A123.3, CANA220.1, CLASS A FIRE ASTM E108, CCRR 1028, AC188 etc.



Certifications 
Our synthetic roofing underlayment, peel & stick underlayment, breathable roof membrane, radiant barrier, house wrap etc. can meet or exceeds all required building codes: ASTM D226 Types I & II, ASTM D4869,A123.3, CANA220.1, CLASS A FIRE ASTM E108, CCRR 1028, AC188 etc. We cover your roofing & walling with excellent certified products and perfectly.

FAQ
Q:Is Roof Underlayment Necessary?
A:Underlayment is an important component to the overall roof system as it serves as an extra layer of protection for your roof. Roof underlayment will: * Protect against moisture penetrating through the roof, resulting in leaks. * Add extra insulation to your home to keep it from being drafty. * Absorb noise from rain or other elements on the roof. * Ensure that the roofing material laid on it looks uniform and even . * Keep your roofing warranty valid if applicable.

Q:What Is Synthetic Roof Underlayment?
A:Synthetic underlayment is a roofing accessory composed of laminated polypropylene or polyethylene plastic that goes over the roof deck and serves as an extra layer of protection from the elements for a roofing system. It has excellent durability as the material does not absorb moisture. This makes it the right material to choose when drying in a roof.

Q:How Long Can Synthetic Roof Underlayment Be Exposed?
A:Within a certain timeframe, synthetic underlayment can be left exposed to the elements and not be damaged. The time frame depends on the specific manufacturer of the underlayment as each is different. We recommend, roofing underlayment which can be exposed for 6 months to 12 months.

Q:Synthetic Underlayment Cost vs. Felt Underlayment Cost
A:Synthetic is a higher quality product but also comes with a higher cost. * Non adhesive synthetic roof underlayment costs 17 cents to 25 cents per square foot * Self adhering underlayment cost 50 cents to 75 cents per square foot * Felt roof underlayment costs 5 cents to 10 cents per square foot.

Q:Synthetic Underlayment Weight Vs. Mil Thickness
A:Non adhesive synthetic roofing underlayment isn't created equally. There are lots of high quality synthetic roof underlayment brands , but there are also some low quality brands. They try to trick you with a lousy product and fancy marketing. The weight of the synthetic underlayment is a great indication of the quality of the underlayment. The membrane layer is where you get your water proofing and abrasion resistance. In an effort to save money, there are brands of synthetic underlayment that boast about their mil thickness. This can be misleading though as some of these underlayment have a fuzzy top layer for walkability that's a false indicator of the materials thickness.

Q:Is Synthetic Roof Underlayment Better Than Felt Underlayment?
A:Synthetic roof underlayment is the most preferred form of underlayment material for its strength and tear resistance. Synthetic was actually created to be a product that solved the problems that felt underlayment, or roofing felt, has. For years, felt was the go-to material to use for roofing underlayment. Only within the last two decades has synthetic underlayment hit the market as an improved product that would not have the problems with felt.