Tiny House

Your Guide to Use Spray Cork

By taufiqhaque

As technology progresses, we want to look for solutions in the most up-to-date technologies. Such innovation may often mix traditional and modern methods in non-toxic methods. Spray cork is another great demonstration of a creative and tried-and-true alternative for external architectural finishing, heat protection, and waterproofing that makes use of an old, organic construction element.

What is Spray Cork

Spray cork is a specific sort of thermal insulation consisting of cork and liquid resin for the structure. It could spread across the outer layer of practically any surface, apart from certain construction finishes. 

It might also be used to cover masonry, metal sheets, and nearly every other type of structure. One of the several primary factors that made cork finishing increasingly prominent among builders and house owners is its adaptability.It is a painting or stucco replacement made up of 80% cork granules with 20% water-based pigment and is offered in a range of colors.

Where Can You Use Spray Cork?

Spray cork may be used on almost any exterior that might normally be painted. It might also be applied straight to any sort of traditional home façade. Cork additionally has a good anti-slip feel, ideal for porches, terraces, and walks. 

When touched, Cork will not feel as warm as brick or stone, making it perfect for poolside surfaces. Being a substitute for spray foam, it can fill air voids in internal wall cavities while not adding intensity to the structure.

Spray cork is breathable, contrasting sealed cell spray foam, enabling air to pass through, allowing the panel component to crisp up. This treatment will be sprayed over the chamber to close holes and air infiltration locations before putting insulation. 

This treatment technique might help preserve timber walls from mildew and damage by performing as a protective covering over the timber. If you choose that internal finish aesthetic, spray cork may also be sprayed straight over interior walls. 

Benefits of Spray Cork

The use of a cork covering on the construction has several advantages. Although, not each of those is immediately apparent. The spray is exceptionally fire-resistant due to its cork composition. As a result, cork is an excellent alternative for making your structure secure. 

Moreover, cork is extremely mildew and fungus resilient. It is just an outstanding tool that has proven to be both versatile and useful. We have explained some of the advantages below for your convenience.


Cork is a sustainable material that is generally sourced from administratively controlled areas. Throughout the tree’s 150-to-250-year existence, the bark is taken every nine years. Cork picking has no negative impact on trees. Even nicer, the grains included in spray cork are usually leftovers from the cork stopper manufacturing.

There are no inflating elements used in spray cork. It is simply an 80/20 combination of cork grains and water-based pigment sprayed using a spray painting gun plus pressurized air or electrification.

It decreases the emission of microplastics produced by paint deterioration since it comprises 80% cork. In similar elastomeric coatings, this 80% cork will be replaced with a synthetic substance.

Non- toxic

Mildew and mold are a resident’s worst fear. Nobody wishes to inhale awful moldy stench or face the medical risks that poisonous fungus might cause. Mildew and mold particles are not a problem with spray cork. As a result, it is a great covering on almost any architectural surface! It also includes zero volatile organic chemicals, contrary to numerous conventional construction products. It is safe to use! 

Insulating Material for Home

Cork is a very effective insulator. It provides considerable temperature and auditory shielding, although being applied at relatively tiny layers. In this regard, it outperforms traditional paint or plaster. R-value does not assess its thermal insulation. It is alternatively assessed in terms of thermal resistance. The speed at which heat flows across a substance is measured by thermal conductivity. 

It is excellent at sealing holes and air gaps; remember, an airtight construction is a huge move to a more energy-efficient structure. It is a unique technique for boosting thermal effectiveness and lowering cooling or heating expenses, considering the lack of a specified R-value.

Things You Need to Know

You need to keep these below-mentioned points in your mind before you rush to the market to get spray cork coating.  


Sands and particles rarely attach to the exterior of cork, but if they get attached, they can be washed away. The coating, the same as any other enamel, may deteriorate due to the sunlight after a period, necessitating reapplication. 


For external usage, several spray cork formulations come with 10 to 15-year guarantees. Considering the usage, spray cork may need to be reapplied at varying frequencies. The top of a deck would most probably require touch-ups quicker than that of any outside walls. 


One of the numerous advantages of this multi-tasking product is that it might be used on almost any medium. It sticks to metal roof tiles and roofing shingles with ease. Cork contractors may also place the substance right on the base of a pre existing roof, eliminating the requirement for an expensive cut. It also might be used to coat indoor floors such as ceramic, laminate, composites, marble, natural stone, cement, and roofing supplies. It also is suitable for application on outside walking terrain. 

Spray Cork in Tiny Houses

Spray cork coating offers roughly the similar thermal efficiency as fiberglass insulation, plus it doubles the sound performance, meaning you are on the correct route if you are choosing it rather than regular insulation in your tiny home. Plus, they might be effective against fire too. 


Spray cork is one of the most flexible construction components available. It is a fantastic approach to insulate a structure effectively. It may also safeguard structures against water damages, fire, mildew, plus other issues.

It is also a 100% organic, non-toxic product obtained from sustainably managed forests, a bonus. Moreover, you may use it on almost any structure inside or outside a structure—a total win.  

You can also read: Tiny Homes on Wheels: How to start life somewhere else with no money

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