A SOURCE FOR INFORMATION ON HIGH PERFORMANCE DESIGN, CONSTRUCTION AND PRODUCTS

ARCHITECTURAL CONSTURCTION MATERIALS

From Intus Windows, Prosoco R Guard, Hanno 3E to Roxul Insulation. We cover your envelope.

ARCHITECTURAL FINISH MATERIALS

Hardwood Flooring Reclaimed or New, OSMO & Vermont Stains to Mythic Paint and American Clay Plaster. We cover the inside.

Center For Sustainable Design

A High Performance Building Design Showroom

World Class Supply

High Performance Building Supply and Design Center

Providing products and knowledge to build ZERO energy buildings

Product Listings

This is where you will find the products that you are looking for, which is most likely why you are on our website... you will find detailed descriptions, prices and availability.

PRODUCTS

Location

Yes! We do have a brick and mortar location and, if you can drive and follow directions, you can find us easily. We are just 3 miles off I-95, only 45 minutes south of Philadelphia and 1 hour north of Baltimore. Come visit us and then go have a drink and a nice lunch or dinner at one of the many restaurants here in Newark, Delaware.

VISIT US

Got a question?

If you have questions, or are looking for technical information or advice, we want you to reach us. We are passionate about our products and always happy to provide our 2 cents.

ABOUT US

So...About us...Well, we are in Newark, Delaware - midway between Philadelphia and Baltimore and not all that far from New York and DC. We are obsessed with energy efficency and the building envelope. Passive House is one of our passions. Second only to WOOD and making things with that material. Be it buildings or furniture and the finish we put on them. We are fond of saying that OSMO is liquid nirvana for wood.

BLOG POSTS

PROSOCO LIQUID FLASHING
Posted by : Italkgreen

18 January 2014

Dispelling the myth of life certainties – Death, Taxes and Water penetration through openings. [...]

EXCELLENT FLIP BOOK ON PASSIVE HOUSE
Posted by : Italkgreen

16 January 2014

Every time I go to a Passive House conference and see these booklets, I pick up as many as I can[...]

BULLITT CENTER
Posted by : Italkgreen

12 January 2084

PROSOCO R-Guard products make prestigious Top 10 list [...]

INTUS PREMIER WOOD WINDOW
Posted by : Italkgreen

10 January 2084

New Intus line Premier 78 Alu Mira Advance was presented in the end of September at DesignDC Expo [...]

You can find us at 175 South Main Street, Newark Delaware 19711

Located just 3 miles off Interstate I-95 in NO sales tax Delaware

icon 1 175 South Main Street, Newark, DE 19711

icon 2 302.737.1441

icon 3 www.worldclasssupply.com

For many years, I have lived uncomfortably with the belief that most planning and architectural design suffers for lack of real and basic purpose. The ultimate purpose, it seems to me, must be the improvement of mankind.
James Rouse