How much Gloss Varnish do i need to properly coat an 18"x24" Canvas?

There is a formula for paint coverage on YouTube that specifies the number of ounces/grams needed to cover a canvas. I'm not sure if it would answer your needs, but here it is. Measure your canvas height and width then multiply them by each other to get the square inches. Multiply the square inches by 0.1 to get the ounces needed to cover your canvas. To convert to grams, multiply the ounces by 28. This is only a rough guide as the paint consistency will affect coverage, i.e., the thinner the paint, the fewer ounces needed.

What is the effective difference between normal matte medium and the matte fluid medium?

The normal matte medium will only produce a matte effect on the paint. The matte fluid medium will give the same matte effect, but will also lessen the viscosity of the acrylic paint you’re mixing in making it thinner and slightly more transparent (depending on the amount of medium added).

can it withstand high heat ?

Yes it will but I wouldn't put it outside in the direct sun. You would need a varnish for that.

Liquitex Basics Gloss Varnish 250ml

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Description

✨ Protect your art with a gloss that speaks volumes!

DURABLE CLARITY - Dries crystal clear without yellowing, preserving your masterpiece for years to come.
SAFE CERTIFIED - ACMI certified and ASTM d4236 compliant—trusted for professional and educational use.
CUSTOMIZABLE SHEEN - Mix with matte varnish to tailor your finish from satin to high gloss effortlessly.
EFFORTLESS APPLICATION - Designed for smooth coverage with a large soft brush, ensuring a streak-free finish.
ULTIMATE SHINE EVERY TIME - Achieve a flawless, permanent gloss that elevates your artwork’s brilliance.

Gloss Varnish 250ml by ColArt Americas delivers a permanent, clear, and non-yellowing protective finish for paintings. Fast drying and ACMI certified, it’s perfect for professionals and educators seeking durable, customizable sheen options with easy brush application.

Specifications

ASIN	B06Y477JTC
ASIN	B06Y477JTC
Age Range Description	Adult
Best Sellers Rank	#11,540 in Office Products ( See Top 100 in Office Products ) #284 in Art Paints
Brand Name	Liquitex
Color	Gloss Varnish
Color Code	transparent
Container Type	Bottle
Coverage	Adds a gloss sheen, protects and stops dirt build up, Dries clear to a flexible, non-tacky, hard surface, Increases brightness and color saturation, Improves surface durability - ideal when shipping or exhibiting, Protects colors from UV light damage, Resists discoloration - yellowing and fogging - caused by humidity, heat and UV, Use on flexible or rigid supports
Customer Reviews	4.7 4.7 out of 5 stars (3,142)
Customer reviews	4.7 4.7 out of 5 stars (3,142)
Date First Available	17 April 2017
Dry Time In Hours	3
Finish Type	Gloss
Full Cure Time	0.96 Hours
Global Trade Identification Number	00094376977547
Included Components	GLOSS VARNISH 250ML
Indoor Outdoor Usage	Indoor
Is Waterproof	False
Item Form	Liquid
Item Type Name	GLOSS VARNISH 250ML
Item Volume	250 Milliliters
Item model number	1041008
Manufacturer	ColArt Americas
Manufacturer	ColArt Americas
Model Name	BASICS
Model Number	1041008
Paint Type	Acrylic
Part Number	1041008
Product Dimensions	14.99 x 5.59 x 5.59 cm; 290 g
Size	250 milliliters
Special Features	UV Resistant
Specific Uses For Product	Interior/Exterior
Surface Recommendation	Painted Surfaces
UPC	094376977547
Unit Count	8.45 Milliliters
Water Resistance Level	Water Resistant

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