WHAT WE OFFER
Green Room epoxy resin systems
Marko EPS foam blanks
Millennium PU foam blanks
BGF "Aerialite" fiberglass cloth
Complete range of surfboard materials and supplies
From the trained lab rats at Eversoul Resin Industries comes a new micro-brewed epoxy resin system. Our chemically-engineered resin system has been developed specifically to meet the needs of the surfboard/SUP manufacturing community. The system is a 2 part, 100% solids, no VOC epoxy resin/hardener combination. It features a convenient 2:1 mix ratio by volume (100:44 parts by weight). It has been designed for wet hand lay-up laminations and has an excellent balance of low viscosity for rapid wet out and good air release; quick thin film set time to eliminate drain out; non-blushing, no shrinkage cure even in low temperature and high humidity; self leveling with high gloss; excellent UV stability; and high strength.
In addition, it has been engineered to have a lower peak exotherm temperature than most fast setting epoxies, which aids in fin box installations without foam core melting. The System offers the choice of 3 resin and 5 hardener formulations to the surf/SUP market. Combinations of any of the resin and hardeners will give bright, clear laminations and smooth easy to sand to hot coats with unsurpassed long-term resistance to yellowing and chalking.
Tips for Mixing Epoxy
Glossing with polyester resin is less problematic than hot coating because the gloss layer is usually much thinner. Surface preparation is essentially to ensure maximum mechanical bond. Thoroughly sand the epoxy hot coat with no finer than 100 grit before glossing.
Can you gloss with polyester gloss resin?
GR epoxy is compatible with both EPS and polyurethane blanks.
Can I use Green Room epoxy for EPS and polyurethane foam?
Cure times are very temperature dependent. At temperatures of 75° to 85° F, flip times are in the 1½ to 2½ hour range and full cure will occur over the next 3 to 5 days.
What is the normal flip time for laminations? How long does a board take to fully cure?
Although it can be done, hot coating with polyester resin is not recommended because the results can be unpredictable. The bond between epoxy and polyester is purely mechanical and chipping polyester hot coats are a not uncommon occurrence without sufficient prep of the epoxy lamination.
Can you hot coat with polyester resin?
GR epoxy is designed to fully cure at normal room temperature, but a post cure of 110° to 130° F will increase some physical properties (primarily HDT).
Do I need to post cure?
Most common surfboard pigments/tints are compatible with GR epoxy although they will cause some loss in physical properties. Usage should be less than 5% by weight to ensure the least effect on physical properties. A small test batch with any pigment is highly recommended to ensure that there is no inhibition of cure.
Can I use regular tints/pigments for polyester resin in GR epoxy?
Hot coats applied within the first 24 hours of lamination will not require sanding of the lamination. If more time has passed, the lamination should be lightly sanded with special attention paid to any shiny areas in the lamination.
Do you need to sand the lamination before you hot coat?
Green Room epoxy has excellent sanding properties without any additional additives. Most difficulties with sanding occur when the epoxy has not cured sufficiently. If the epoxy is clogging the sandpaper, allow more time to cure before continuing sanding.
Do you need any additives to improve sanding?
We recommend that only the resin side be warmed in cold weather. Immersion of the resin container in a bucket of hot water (less than 100° F) is the preferred method. Use caution that the resin is not contaminated with water. Using a microwave oven to heat the resin is not encouraged and the hardener should never be placed in a microwave.
Can I warm the resin to make it thinner in cold weather?
1-17-8 Koen Minamiyata
Osaka ,Japan 546-0024
osaka "at" maneuverline.co.jp
david "at" greenroomboardco.com
Master from the Sea
Atlantic Surfing Materials
PO Box 1819
Melbourne, FL 32902-1819
atlanticsurfing "at" aol.com
Green Room Board Co
sales "at" greenroomboardco.com
6508 Wind Mill Way, Unit A,
Wilmington, NC 28405.