Information

Here, we explore what viscosity is and its importance in period and listed building conservation and restoration. Understanding paint viscosity is crucial for achieving the desired finish and longevity in your projects. We aim to provide you with the knowledge and insights needed to navigate this key aspect of paint selection and application,

 

Very simply put:

Temps go up = liquid viscocity goes down.

Temps go down = liquid viscocity goes up

What is viscosity?

Viscosity refers to a liquid's resistance to flow. In simpler terms, it's how "thick" or "thin" a liquid is. Understanding viscosity is key to knowing how a paint will perform during application, its ability to adhere to surfaces, and its final appearance. This is especially important in the conservation and restoration of period and listed buildings, where the correct paint consistency is crucial for maintaining the building's historical integrity.

Temperature sensitivity

All Liquid paints are very much affected by temperature: gasses will occur in many liquids e.g when heat is applied to many liquids, that liquid will turn to a gas - steam rising from boiling water is very obvious.

But in many other liquids there won't always be visible steam unless they are boiled, but that liquid will thin down and flow better, for example: your blood,  (creating too much unecessary pressure on your heart, really isn't clever)

So viscocity is extremely important!

Now back to Paints:

Warmer temperatures typically reduce liquid viscosity, meaning your paint becomes thinner and more prone to drips and runs.

Converesly, cooler temperatures increase lquid viscosity, meaning your paint becomes thicker, which will potentially make that paint harder to apply smoothly.

We understand simple school sciences, and how temperatures will knock on further to your paint drying correctly or not.

 

So the impact of environmental factors on paint performance is important. Our knowledge ensures that you're prepared to handle any temperature-related viscosity changes, optimizing your application process, no matter the conditions. Always think ahead. 

 

Scientific formulas do exist especially for this reason, but you were born with a brain, also for a very good reason, so paint and common sense is enough here, plus we've previously detailed how common oil and water based paints dry. So just think.

Liquids vary

It's important to remember that all liquids vary in viscosity. Different types of paints will exhibit different viscosities, even at the same temperature.

Some paints are naturally thicker, while others are thinner, or "tixotropic" (but thats for another time).

However, for now we'll cover viscosity, as one of the important characteristics of paints, helping you select the perfect product for your specific project needs. 

Measuring Paint Vicocity

Measuring the viscosity of paint can help you determine the right consistency for spraying, brushing, or rolling. In this article, we will guide you through the process of measuring paint viscosity and provide you with tips for achieving the desired consistency.

Flow cups

Measuring the time taken for a specific amount of paint to flow will determine the viscocity of that paint, but of course you already know all of this, because painting's easy isn't it!

Various types of 'flow cups are available today from beautiful looking non Ferrous Metal types to black, functional yet bland  looking plastics.  We've put a Chart at the end to make things easier to understand -  click to enlarge it!