• Cangzhou Jiansheng Building Waterproof Material Co.,Ltd
    you provide us with good quality product and superior service. we witnessed the improvement and development of your company, each time we have any reqirement, you will try your best to make our satisfied. thanks for your cooperation.
Contact Person : Angela
Phone Number : 008615511775265
WhatsApp : +008615511775265

ASTM D226 0.4mm Felt Paper Synthetic Underlayment Roofing

Place of Origin China
Brand Name Jianda
Certification ISO,ASTM
Model Number RF
Minimum Order Quantity 100rolls
Price Negotiated
Packaging Details Pallets or customized
Delivery Time 7 days
Payment Terms L/C, T/T, Western Union
Supply Ability 1000rolls per day

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Product Name Felt Paper Underlayment Type No.15/No.30
Specification ASTM D4869/ASTM D226 Thickness 0.4mm-1.0mm
Width 36inch Production Capacity 500rolls Per Day
Ingredients Paper And Asphalt Technics Impregnation
Color Black Packing Label Customized
High Light

felt paper synthetic underlayment roofing


ASTM D226 synthetic underlayment roofing


0.4mm Synthetic Underlayment Roofing

Leave a Message
Product Description

Felt Paper Underlayment Asphalt Shingles Underlayment



As an integral part of any roofing system, underlayment provides another waterproof layer of protection from the elements. Installed on top of the decking , but under the shingles, underlayment is in place to keep any water that gets past the shingles away from the decking. It also acts as a weather barrier untile the shingles can be installed.


Felt paper, also referred to as tar paper, was the standard underlayment material in roofing for decades. It is made by kraft raw paper impreganated with high quality liquid asphalt. It is easy to use, durable, and even had alignment lines to help with the shingle installation.


Felt paper advantages

Just like hot dogs at a baseball game, people like what they know. And many roofers still use felt paper because it was the material they grey up using and working with. And it's still a viable product because it is cheaper and provides better traction during installation, especially on steep pitch roofs.

Secondly, felt paper is cheaper. When building a home, the cost of every material should be taken into account. Depending on the size of the roof, the difference in cost could be significant.


Felt paper specifications and physical properties data

Test item


D4869  30#


D226 30#

ASTM D4869 15# ASTM D226 15#
Pliability at 23±2°C.tested shall not crack when bent 90°at a uniform speed over a rounded corner of radius in table for each









Tear strength at 23±2°C min 3.0N 5.0N 2.0N 2.5N
Breaking strength at 23±2°C min MD 40lbf/in 40lbf/in 30lbf/in 30lbf/in
Breaking strength at 23±2°C min CD 20lbf/in 20lbf/in 15lbf/in 15lbf/in
Loss on heating at 105°Cfor 5h max 6.0% 4.0% 6.0% 4.0%
Width of the roll 36 in 36 in 36 in 36 in
Area of the roll 216 ft2 216 ft2 432 ft2 432 ft2
Net mass of saturated felt,min 660g/m2 1200g/m2 360g/m2 560g/m2
Saturation,%by wt., min 120%


100% 120%



How to store 

It requires protection from damage and the weather. Store rolls upright in a dry location and never install when wet or over a wet roof deck.

ASTM D226 0.4mm Felt Paper Synthetic Underlayment Roofing 0