Interlux Interstain is both a wood filler and stain to serve two purposes: it fills the grain of the wood, and stains the wood to enhance its natural beauty.
Filling the wood reduces the number of varnish coats required. Available in Brown Mahogany, Red Mahogany, and Chris Craft Red Mahogany. Interstain can also be used to tint Interlux varnishes.
Out of the package, this product has a thick paste consistency and should be mixed with Interlux Brushing Liquid 333 to the consistency of thick house paint.
BARE WOOD: Sand with 80 grade (grit) paper. Sand smooth. Sanding
Some Important Points If Interstain is not thoroughly dry before overcoating with varnish, the filler will "lift" from the grain and the stain will be apparent on the varnish brush. Product temperature should be minimum 10 deg C/50 deg F and maximum 29 deg C/85 deg F. Ambient temperature should be minimum 10 deg C/50 deg F and maximum 35 deg C/95 deg F. Substrate temperature should be minimum 10 deg C/50 deg F and maximum 29 deg C/85 deg F.
Compatibility/Substrates Apply to clean, dry, properly prepared surfaces only. Do not overcoat directly with unthinned epoxy resin.
Number of Coats As required
Coverage (Theoretical) - 0 (sq ft/Gal)
Application Methods Brush
TRANSPORTATION,STORAGE AND SAFETY INFORMATION
TRANSPORTATION: Interstain should be kept in securely closed containers during transport and storage.
STORAGE: Exposure to air and extremes of temperature should be avoided. For the full shelf life of Interstain to be realised ensure that between use the container is firmly closed and the temperature is between 5 deg C/40 deg F and 35 deg C/95 deg F. Keep out of direct sunlight.
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 Interstain 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.
WARNING: Cancer - www.P65Warnings.ca.gov
July 12, 2020
Easy to use, it fills and stains. The Color (Brown Mahogany) was a perfect match for the Philippine Mahogany on my deck. I used it on seat backs made from Marine Plywood (Fir?) that needed to match the Mahogany deck. I did some filling on the plywood using West System epoxy mixed with their wood flour filler. The stain colored it as well as the raw wood. Finished with 3 coats of varnish. Looks great.
May 19, 2020
Follow the directions and this product does what it supposed to do.
October 28, 2019
The color is very orange, not even close to red and certainly not brown. Glad I used it on a piece of scrap to test prior to applying to my project. It appears to be good wood filler although it dries very quickly and needed to solvent-dampened rag to remove all of the excess.
February 4, 2018
You cant get the surfacing putty anymore to fill holes, so I had to fill with epoxy and of course was concerned that when it came time to use the 1579 filler/stain it would not work. To my delight both the mahogany wood and the places where I used epoxy stained identically....Yahoooo
April 9, 2017
This product worked perfectly on my mahogany brightwork. The small can will cover a surprisingly large area when thinned with the recommended thinner. The stain is brushed on and then wiped off with a rag (you'll need lots of rags). The color produced is very consistent without any streaking or blotchiness. Fool proof IMO. I used a variety of mahogany stock on my boat, and this product made it look like it all came from the same tree.
August 7, 2013
Used on my 1962 Grady White. Used in several applications to get desired color.
December 8, 2010
I stripped the hatches and other trim components on my 1953 Hinckley. Thought about using a common household product until I noticed it wasn't for external use. Did a little research and purchased this product based on recommendations. It sealed nicely in one coat, and left a really smooth and nicely colored surface to start the varnish build-up which has gone very well.
June 14, 2010
Great stain fills the Mohag pores, The color is redish brown not red Must use the 0333 thinner
March 18, 2010
A little goes a long way! Follow the directions on the can! You can thin this product down to meet your needs. If you want more filling qualities, use less thinner. If you want more of a stain, use more thinner. I used the "Brown Mahogany" stain on bare teak. When you first apply it, it looks like a warm red but by the time you work it into the grain and wipe off the excess, the color tones down a bit. When it's dry, you can even out any imperfections with Interlux Brush Thinner 333 and a piece of cheesecloth. I finished off the project with "Interlux Satin Varnish" and it toned down the color even more, bringing out more of the warm amber of the teak, creating a very close match to the surrounding wood on our boat. "Interstain" is very forgiving to use and has excellent filling qualities for small imperfections in the wood.