Is Your Home Protected From Hail Damage?  A Homeowner's Guide to Hail Retrofit

http://www.ibhs.org/publications/view.asp?cat=77&id=127

A Homeowner's Guide to Roofing and Hail - Is Your Home Protected From Hail Damage?

http://149.168.212.15/mitigation/Library/Home_Protection/hailpub.pdf

NRCA - National Roofing Contractors Association

http://www.nrca.net

NRCA's Professional Roofing News and Information

http://www.professionalroofing.net

Asphalt Roofing Manufacturers Association

http://www.asphaltroofing.org

Residential / Steep-Slope Roofing Resoures

http://www.asphaltroofing.org/resources_steep.html

Internation Code Council

http://www.intlcode.org

NAHB Research Center - High Wind- and Impact-Resistant Asphalt Roofing Shingles

http://www.toolbase.org/Technology-Inventory/Roofs/wind-resistant-asphalt-shingles

UL 2218 Class 4 Impact Resistant Asphalt Shingles

http://www.ibhs.org/publications/downloads/20050804_171858_23352.pdf

CertainTeed LANDMARK SPECIAL - Impact Resistant Shingles - shingle installation may qualify for a reduction in homeowner premiums

http://www.certainteed.com/products/roofing/residential/premium-designer/308941