Preparation All substrates must be primed, clean and dry.
PREVIOUSLY PAINTED SURFACES
In Good Condition Wash down with Super Cleaner, rinse with fresh water and allow to dry. Sand with 80-180 grade (grit) paper.
In Poor Condition Remove all previous coatings and prime the substrate.
STEEL/ALUMINIUM Prime with Intergard 269 or Interprime 820.
BARE WOOD Prime stable constructions only, with Interprime 820.
GRP For osmosis treatment follow the Gelshield specification ensuring the Interfill 830 is only used during STAGE 2.
BARE GRP/COMPOSITE Sand with 80-180 grade (grit) paper. If left for longer than 24 hours, two component epoxy primers and fillers will need sanding with 80-180 grade paper to ensure a good physical key.
Method Mix the two components thoroughly to an even colour. Remove any dust from the surface. Apply firmly in a spreading action. When hardened, sand smooth with 80-180 grade wet or dry paper. Interfill 830 may be overcoated with itself or with Interfill 833 as soon as it is cured enough not to be lifted during the screeding process.
Hints Thinner International GTA220 for equipment cleaning only.
Thinning Do not thin.
Ventilation and Humidity Control Avoid conditions of low temperatures coupled with high humidity as this can result in the formation of a surface by-product which will need to be removed by detergent wash followed by fresh water rinse, or by sanding, prior to the application of any subsequent layers.
Other Spread mix out on a board to avoid excess heat build up and to keep the working life as long as possible. When fairing a hull, two or three 'cross coats' of Interfill 830 will ensure the desired shape is obtained. Where large areas have been faired, sand with a longboard to allow for the curvature of the hull.
Some Important Points Do not use unless mixed thoroughly with the curing agent at specified ratio. Do not apply more than recommended WFT at any one time. Do not use below 10°C/50°F. Do not thin. Do not wipe down cured filler with thinners/solvents. Substrate temperature should be minimum 10°C and maximum 35°C. Product temperature should be minimum 10°C and maximum 35°C. Ambient temperature should be minimum 10°C and maximum 35°C.
Compatibility/Substrates Do not use on traditional wood constructions where the wood will expand and contract through changes in the moisture content. Interfill 830 should be applied over cured epoxy primers or fillers or onto cured GRP/Composite. Interfill 830 may be overcoated with Interfill 833, Interprime 820, Interprime 880 or Interprotect. Gelshield 200 or Gelshield Plus may be
used over Interfill 830 within osmosis schemes.
Number of Coats As required
Coverage (Theoretical) - 0.2 m²/lt @ 5000 micron (200 mil) WFT.
Recommended DFT per coat 20000 microns dry By Trowel or Batten.
Recommended WFT per coat 20000 microns wet By Trowel or Batten.

Colour YAA867
Finish Matt
Specific Gravity 0.75
Volume Solids 100%
Mix Ratio 1:1 by volume (as supplied)
Mix ratio by weight: 1.15:1 YAA867: YAA868
Converter/Curing Agent YAA868
Typical Shelf Life 2 yrs
VOC (As Supplied) 77 g/lt