If you are a regular visitor to this blog, we may sound like a broken record but we’ll never get tired of reminding you that the most important part of the painting process is surface preparation. You have to get a clean and smooth surface before you paint. Improper or inadequate surface preparation is always the root of painting troubles and back jobs. You need the right products to help you prep your walls before you paint them. That’s why Boysen developed a line of construction chemicals called Konstrukt for hassle-free surface preparation.

Konstrukt K-201 Permaplast

One of those products is Konstrukt Permaplast K-201 High-Performance Acrylic Skimcoat, a specially formulated bonding paste that corrects surface imperfections before painting. It repairs bubbles, honeycomb, and other concrete defects like waviness and plumbness from 2 mm to 3 mm thick. It has excellent paint compatibility, which means you can use it with different concrete paint types like water-based, solvent-based, or elastomeric.

What makes the Konstrukt Acrylic Skimcoat unique is its acrylic formulation. It has excellent paint adhesion, bond strength, and paint compatibility. Compared to other powder skimcoats, Konstrukt Acrylic Skimcoat is more durable, and it doesn’t chalk. That’s why Boysen paint experts recommend that you use an acrylic skimcoat because you can rest easy knowing that you don’t have to redo your walls when repainting. This product saves you time and money in the long run.

How to Use Konstrukt Permaplast K-201 High-Performance Acrylic Skimcoat

You can use the Konstrukt acrylic skimcoat on both interior and exterior concrete surfaces. Below is the step-by-step procedure on how to prepare the mixture and how to apply it.

How to Prepare the Surface Before Konstrukt Acrylic Skimcoat Application

The bare concrete has to be cured for at least 14-28 days before applying the skimcoat. If there are concrete defects that are 3 mm to 5 mm thick, then you should apply a render (Konstrukt Permaplast K-202 High-Performance Acrylic Render) first. Make sure you have a clean surface; wipe off dust or dirt. Then, dampen the concrete surface before applying the skimcoat.

How to Prepare the Konstrukt Acrylic Skimcoat 

In a plastic container, mix 1 part Konstrukt acrylic skimcoat with 1 part sifted cement until it has a lump-free and homogeneous consistency. The mixing ratio is 1:1. You may use Portland cement to get an ordinary cement finish, or use white cement to achieve a white finish. Do not add water to the mixture. Plan your approach, work efficiently, and use the mixture within an hour.

How to Apply the Konstrukt Acrylic Skimcoat 

Use a steel trowel to apply the skimcoat and cement mixture thinly on the concrete surface. Firmly press the edge of the trowel on the surface until all areas are covered. Wait an hour before you apply the second coat. Then, inspect the surface to check if trowel marks are visible.  If the marks are noticeable, let the surface dry for another hour and sand it to further smoothen it. You don’t need to apply a neutralizer on it anymore. Let it cure for 7 days (or 14 days in extreme weather conditions) before painting.

Watch this video to help you visualize the preparation and application process.

Your Questions Answered

We gathered all the frequently asked questions about skimcoat. Here, we came up with important points to remember when using the Konstrukt acrylic skimcoat.

No, you can’t use skimcoat on previously painted surfaces. You can only apply it on bare concrete surfaces. You can apply putty on primed surfaces to cover hairline cracks and minor surface imperfections.

No, skimcoat is not the right product to use for waterproofing. It’s designed to fix surface imperfections on bare concrete surfaces. Use Boysen Plexibond Cementitious Waterproofing System instead.

No, you can’t use skimcoat on concrete floors. Apply skimcoat only on bare concrete walls.

No, skimcoat is only made to repair surface imperfections on concrete walls. You may use putty to smoothen wooden surfaces for hairline cracks and minor surface imperfections.

No. We only use skimcoat on bare concrete surfaces.  Use putty or masilya on primed surfaces to correct hairline cracks.

No. You have to apply primer first on the surface. The primer serves as a sealer for the concrete surface and helps the topcoat to adhere better. Please follow the standard painting system.

Got more burning questions about skimcoat or other Konstrukt products? Talk to the Konstrukt technical team! Ask us anytime online and write an email to ask@myboysen.com.

Subscribe to the Boysen Blog for more painting tutorialspainting tipsDIY project ideas, and design and color inspirations.



Yasmin Aguila is a copywriter at Boysen Paints Philippines. Interested in making paints fun and relatable, she produces quizzes and painting ideas for this blog. She claims that she is obsessed with yellow, but she always dresses in black from head to toe.


    • With reference to the email sent to you last October 27.


      Para sa iyong tanong, depende po sa kundisyon ng pader kung kailangan pa itong pahiran ng skimcoat.

      Kung satisfied na kayo sa kinis ng kongkretong pader, hindi na po ito kelangang gamitan ng skimcoat.

      Pero kung medyo rough ang pader at up to 3mm lang ang imperfections, pwede po kayong gumamit ng skimcoat o palitada bilang alternative plastering para kuminis ito bago mapinturahan.

      Ang aming recommended skimcoat ay ang Konstrukt Permaplast K-201 High Performance Acrylic Skimcoat. Pwede ito sa kongkretong pader sa loob at labas ng bahay. Click here para sa instructional video: https://youtu.be/eIFdHcrnmE4


      If you have further questions, please email ask@myboysen.com directly.

  1. Let’s say na ang plastered wall ay 2 days palang nacucure, pwede na ba sya lagyan ng skimcoat o kailangan pa ng neutralizer?

  2. Lianne Mengote Reply


  3. Ismael Lim Reply

    Follow up ko lang ang tanong sa itaas, i,e,.
    a.) Ang INTERIOR WALL ko ay na applayan ng BOYSEN plexibond ( because of difficulties in applying the exterior wall ,… THERE IS AN EXISTING WALL with very limited clearance).
    My question is puede bang applyan ng skimcoat etong wall na may plexibond na ? If NO. Any suggestions?

    Thank you and your reply will be highly appreciated.

    • Hindi po pwedeng pahiran ng skimcoat ang pader na may BOYSEN Plexibond. Generally, may orange peel finish po ang BOYSEN Plexibond. Depende po sa technique at skill ng applicator kung gaano kakinis ang magiging kalalabasan.

      Also, dahil hindi formulated for interior use ang BOYSEN Plexibond, best na kumonsulta pa rin sa professionals (ex: waterproofing experts) para siguradong maaayos ang iyong water seepage problem.

  4. Can we apply this skim coat to a newly installed drywall?

    • We do not recommend the use of skimcoat on drywalls. If you would like to smoothen drywalls, we recommend consulting the manufacturer of the board for their recommendations.

  5. Van Victor Leano Reply

    Pwede ba yan lang ang iapply sa concrete wall para maging concrete finish effect ang wall?acrylic skimcoat lang?gusto ko kasi concrete finisg ichura ng walls ko. Thank you

    • Hi Van,

      Eto ay excerpt ng email ng aming Community Manager sa iyo –

      “Para sa concrete finish, better po siguro kung makausap kayo ng aming Konstrukt Engineers para maguide kayo sa pag-pili ng klase ng produkto na babagay sa iyong requirements. Marami po kasi iba’t ibang produkto na pwedeng gamitin para ma-achieve ang industrial finish.

      Kung okay lang, pwede ba naming malaman ang iyong mobile number para makontak ka ng aming Konstrukt Engineer?”

      Kung ok ka to give your number, please send to ask@myboysen.com. Or kung gusto mo, please call (02) 8363-9738 local 417 to 418 during office hours and talk to our Technical Team.

      • Hi! May ordinary skimcoat na ang wall ko then i change my mind na gawin ng cement finish instead na pinturahan ang wall ko pwede ko pa bang patungan ng K201 acrylic skimcoat ang wall.

        • Para sa industrial finish, irinirikomenda namin na makausap kayo ng aming Konstrukt Engineers para makapag suggest kami ng produkto na best na babagay sa iyong requirements.

          Pwede ba naming malaman ang iyong mobile number para makontak ka ng aming representative? Free po ang consultation.

          Pakisagot lang directly sa ask@myboysen.com.

  6. Joel B. Quiño Reply

    Pwede bang gamitin ang skim coat sa smoothly finished na concrete?

    • Sinagot na itong tanong mo ng aming Community Manager through email, Joel. Pero pag hindi mo pa nakita, eto ang excerpt:

      “Para sa iyong inquiry, hindi po recommended na gamitan pa ng skimcoat ang kongkretong pader na makinis na.

      Kung ang concern ay minor surface imperfections at hairline cracks lang, pwede kang gumamit ng putty o masilya pagkatapos magpahid ng primer.

      Para sa kongkretong pader sa loob ng bahay, pwede kang gumamit ng BOYSEN Masonry Putty #7311.
      > Click here para sa product details at instructions: http://bit.ly/1JZ9Hrr

      Para sa kongkretong pader sa labas ng bahay, pwede kang gumamit ng BOYSEN Acrytex Cast #1711.
      > Click here para sa product details at instructions: http://bit.ly/MdQbMg

      Pag meron ka pang ibang tanong, please call this number (02) 8363-9738 local 417 to 418 during office hours. Ready ang aming Technical Team to assist you.


  7. Pwede ba patungan ng skimcoat 201 or 202 ang naka flexibond na concrete

    • Hi Rodie,

      May email na pinadala sa iyo ang aming Community Manager. Eto ang excerpt ng sagot niya –

      “Para sa kongkretong pader sa labas ng bahay, ang aming recommended system ay ang pagpahid ng Konstrukt Permaplast K-201 High-Performance Acrylic Skimcoat at Konstrukt Permaplast K-202 High-Performance Acrylic Render sa bare concrete walls. Pinapahid ito bago mag-apply ng BOYSEN Plexibond.”

      Pag meron ka pang ibang tanong, please call this number (02) 8363-9738 local 417 to 418 during office hours. Ready ang aming Technical Team to assist you.


Write A Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.