Roof Genius
Roof calculator, calculates a detail list of roof materials, and a complete estimate. Two ways to determine roof pitch. Offers tips and how to's on roofing. [Windows 95/98/2000/Me/XP/NT]
http://roofgenius.com/

Kool Seal
The number one national supplier of reflective Elastomeric and Aluminum roof coatings, offering the best warranties in the business.
http://www.koolseal.com/

Decra Roof Systems:
Roof coverings using lightweight roof tiles for all roofs down to a ten degree pitch. UK.
http://www.decra.co.uk/

Truco, Inc.
Truco is a rubber roofing system for Metal Roofs, Hypalon single-ply, Smooth surface Built Up Roofing, Smooth & Granulated Modified Bitumen, EPDM single-ply, and Spray Polyurethane Foam.
http://www.truco-inc.com/

Texas Refinery Corporation
Texas Refinery Corp.TRC manufactures top quality property maintenance roof repair products such as Asphalt flat roof and Aluminum Roof Coatings Modified Bitumen Single Ply Torch Down Quickdry asphalt paving seal kiln seal rust remover troxymite resurfer and Mightyplate coating for restoring and waterproofing many different types of roof systems. The Blacktop Maintenance Products seal and restore asphalt parking lots and driveways in need of repair and sealing.
http://www.texasrefinerycoatings.com

Energy Seal
Elastomeric Coatings are rubber-like protective membranes that can be used on metal roofs, single ply roofs, built up roofs, modified bitumen roofs, asphalt roofs & concrete roofs
http://www.energy-seal.com/

Seal Specialists
Distribution of Burgmann mechanical seals, pump and valve packings, custom seal designs and mechanical seal repairs for various brands.
http://www.sealspecialists.com

Roof Products, Inc.
Manufacture prefabricated roof curbs and other roof accessories. Products include expansion joints, equipment supports, adapters, and ice deflectors.
http://www.rpicurbs.com/

Roof Coatings Manufacturers Association
Roof Coatings Manufacturers Association (RCMA) represents manufacturers of cold-applied roof coatings and cements. RCMA’s site offers product information and the latest roof coating news.
http://www.roofcoatings.org/

Fibreglass Roof Decking
Roof Decking From Dura Composites Ltd
http://www.roofdecking.co.uk