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Interlux Interfill 833

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Interfill 833

Interfill 833 is an easily sandable finishing filler for use over Interfill 830 to correct minor surface defects before application of finishing coats.
* Fine grade extenders give extra smooth results
* Easy sanding
* Contrasting colour to Interfill 830
Interfill 833 may be applied by trowel, filling knife or fairing batten up to a thickness of 0.3cm.

Part No.

Description (Click to view & order)







Colour YAA813-Green
Finish Matt
Unit Size 5 Lt
Specific Gravity 0.825
Volume Solids 100%  , Converter/Curing Agent - YAA814
Mix Ratio 1:1 by volume (as supplied) Mix ratio by weight: 1.14 : 1 YAA813: YAA814
Typical Shelf Life 2 yrs



10C 15C 23C 35C

Sandable 38hrs 28hrs 17hrs 12hrs
Pot Life 80mins 70mins 50mins 30mins

Substrate Temperature
10C 15C 23C 35C
Overcoated By Min Max Min Max Min Max Min Max

Interprime 820  5days  -  3days  -  2days  -  1days  -
Interprime 880  5days  -  3days  -  2days  -  1days  -

Note:Once the sandable time has been exceeded, all fillers should be sanded before overcoating to promote good adhesion. A sanded filler may be left for a period up to 3 months before being overcoated with further epoxy filler or with Interprime 8-series. After 3 months the filler must then be re-sanded before overcoating.

In Good Condition:: Wash down with Yacht Line Super Cleaner, rinse with fresh water and allow to dry. Sweep blast or abrade with 180-280 grade paper. In Poor Condition/Repairs: All previous coatings should be removed back to solid material and filled with Interfill 830.
INTERFILL 830: Sand with 80-180 grade paper.
BARE GRP/COMPOSITE: Sand smooth with 120-180 grade paper. Remove all sanding residue using a clean air line and sweeping with a clean brush or broom. Vacuum clean for best results.

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 833 may be overcoated with itself as soon as it has cured enough not to be lifted during the screeding process.

Hints Thinner GTA220 for equipment cleaning only.
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. To ensure good filling of minor pinholes and defects in the Interfill 830, move the spreading blade backwards and then forwards over the area.

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 10C/50F. Product temperature should be minimum 10C and maximum 35C. Substrate temperature should be minimum 10C and maximum 35C. Ambient temperature should be minimum 10C and maximum 35C. Do not thin. Do not wipe down cured filler with thinners/solvents.

Compatability/Substrates Interfill 833 should be applied over cured, sanded epoxy fillers such as Interfill 830 or on cured GRP/Composite.

Number of Coats As required

Coverage (Theoretical) - 0.33 (m/lt) @ 3mm/3000m WFT

Recommended DFT 3000 microns dry By Trowel or Batten.
Recommended WFT 3000 microns wet By Trowel or Batten.

Application Methods Trowel, Batten

Exposure to air and extremes of temperature should be avoided. For the full shelf life of Interfill 833 to be realised ensure that between use the container is firmly closed and the temperature is between 5C/40F and 35C/95F. Keep out of direct sunlight.
Interfill 833 should be kept in securely closed containers during transport and storage.

Safety DISPOSAL: Do not discard tins or pour paint into water courses, use the facilities provided. It is best to allow paints to harden before disposal.
Remainders of Interfill 833 cannot be disposed of through the municipal waste route or dumped without permit. Disposal of remainders must be arranged for in consultation with the authorities.
GENERAL: Read the label safety section for Health and Safety Information, also available from our Technical Help Line.

DISCLAIMER The information given in this sheet is not intended to be exhaustive. Any person using the product without first making further written enquiries as to the suitability of the product for the intended purpose does so at their own risk and we can accept no responsibility for the performance of the product or for any loss or damage (other than death or personal or injury resulting from negligence) arising out of such use. The information contained in this sheet is liable to modification from time to time in the light of experience and our policy of continuous product development.
Performance Yacht Systems
919 Bay Ridge Road
Annapolis, MD  21403

Toll free: 1-877-379-2248
Local: (410) 267-8681


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