Cure It GRP - Topcoat Cure Failure; Debris in Laminate; Resin Spillages

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Troubleshooting guide
Problems that occur while laying the roof
6) Failure of topcoat to cure
Description of problem - Topcoat is still wet and has not cured.
Possible cause Remedial action
• Topcoat has been used with unsuitable hardener • After water has evaporated apply another very thin layer of topcoat,
(i.e. Summer hardener in winter.) ensuring that it is vigorously and thoroughly rolled in to the
•Topcoathasnotbeensufcientlymixedornotenoughhardenerhas uncuredlayer.
been mixed in. • Always add more hardener to the second batch, up to double
• Topcoat might be contaminated by water. if necessary.
7) Entrapment of debris in laminate
Description of problem - Debris entrapped in the laminate, possibly poking through the laminate, holes in laminate.
Possible cause Remedial action
N/A • This is usually seen while consolidating. The debris needs to be
removed and patched over. This can be done while the laminate is
still wet and then patched up with a new section of laminate.
• When the laminate has cured, the surface can be lightly rubbed with
a coarse sand-paper. This will highlight any imperfections. The
affected area must then be patched with a new laminate.
 Ifthedebrisiscausingasignicantlumpitshouldbegrounddown
 withananglegrinderrst.
8) Spillages
Description of problem - Spillage/resin spray.
Possible cause Remedial action
N/A •
Resinsstickbymechanicaladhesion;theysoakintoasurfaceand
cure. It is essential to clean the resin off the surface before it cures.
•
The solvent for uncured resin is acetone. This can be used to
remove resin from most surfaces including clothing
 (WARNING:acetoneisextremelyammable.)
•
If used to clean paintwork or coloured fabrics it may discolour or
remove paint or dye from the surface.
•
Resins will generally not adhere to anything that has a shiny
surface. If resin has cured onto a surface such as glass, metal or
 paintwork,itmaybeickedoffusingasharpedgeorbyvigorously
rubbing with a coarse cloth. The cleaned surface may then be buffed
with wax polish or a cutting compound.
• With larger spillages (e.g. driveways or walls,) a hot pressure
 washeristhebestchoice,buthighpressureswillberequiredand
strong detergents are usually necessary. Be aware that strong
detergents and hot pressure washes can damage surface.
•
Preventative measures are essential to avoid spillages.
•
Alwaysmaskoffadjacentareaswherenespraydroplets,caused
by the consolidator roller, may fall. Polythene sheeting is the best
material for masking.