Knauf plaster

1 product

Knauf plaster is a highly valued mineral-based building material for renovations thanks to its breathability and high adhesion. Forget about plasters that shrink or crack as they dry. Here you can see the updated catalogue in real time and filter by availability and price, from joint compounds for covering plasterboard joints to specific bags for smoothing textured walls. If you are going to buy materials for your next project, you will find everything in our online store, with delivery directly to your door or to the worksite within 2 to 5 days.

Buying guide: choosing and working with Knauf plaster

Smoothing a wall requires a good touch, but above all, material that performs well. Models from this German brand are a staple in any renovation thanks to their fine grain and their ability to retain moisture perfectly, giving you enough working time without suddenly hardening.

3 keys to finding the exact material

  1. The surface to be treated. Covering a bare brick partition is not the same as smoothing a painted wall. To renew damaged paint, you need a renovation plaster that can withstand layers of 5 mm without sliding down the wall.
  2. Mixing and application time. Controlled setting allows you to prepare much more material at once in the mixing tub. You make better use of your working hours and avoid throwing hardened product in the bin.
  3. Actual coverage on the wall. Beyond the price of the bag, look at how far it goes. The 15 kg formats are very manageable to carry and offer excellent value both for filling chases and for plastering entire rooms.

Technical comparison of plasters

Product type Main use Average coverage Maximum thickness per layer
Knauf Renove plaster (Covers textured walls) Smoothing over paint and textured finishes. 1 kg/m² per mm. Up to 5 mm.
Mechanical projection plaster New construction and large surfaces. 1.1 kg/m² per mm. Up to 15 mm.
Joint compound Filling joints in dry partitioning. 0.3 kg/m² per joint. Up to 2 mm.

On-site opinion

Professionals who regularly shop at Brikum often choose Knauf plaster again for one very specific reason: the fineness of the compound. Because it leaves such a smooth finish, you save many hours of sanding and the wall is ready for primer almost straight away. In addition, by taking advantage of our offers on pallets or 15 kg bags, the cost per square metre is much lower than when using the typical tub-based levelling compounds.

Steps for perfect application

  1. Preparing the wall. Scrape the surface with a sturdy putty knife to remove loose paint and surface dust.
  2. Mixing the material. First pour clean water into the mixing tub (around 0.5 l for every 1 kg of powder), then gradually sprinkle in the Knauf plaster until the liquid is saturated.
  3. Machine mixing. Use a mixer at low speed for 2 minutes until the compound is smooth and lump-free. Leave it to rest for 5 minutes.
  4. Loading and spreading. Pick up material with the trowel and spread it from bottom to top, pressing firmly against the wall so that it penetrates.
  5. Finishing. When the compound starts to lose its shine on the wall, run a clean, slightly damp trowel over it to close the pores and smooth the surface.

Regulations and air quality

All the brand's plasters bear the CE marking and fully comply with the UNE-EN 13279-1 standard for interior construction. They also carry the A+ indoor air quality certification because they do not emit toxic compounds into the room. At Brikum, we only upload products to the website that we know perform well in everyday construction work, selected and tested by our technical team.

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Frequently Asked Questions about Knauf plaster

How much does a 15 kg bag of Knauf plaster cover when smoothing walls or covering textured paint?

A 15 kg bag is enough to cover about 15 m² if you apply a 1 mm-thick layer. If you have a very coarse textured finish, consumption quickly rises to 2 or 3 kg per square meter. Always plan to buy 10% extra material so you don't have to stop the work halfway through.

Can I apply this plaster directly over old plastic paint without having to sand it?

Yes, renovation plasters contain resins that adhere directly to emulsion paint if it is firmly bonded to the wall. The only thing you need to check carefully is that the old paint is not peeling, because the compound shrinks slightly as it dries and would pull off any loose pieces.

How long do I have to wait for Knauf plaster to dry before painting the wall?

It’s best to let it dry for 24 to 48 hours for every 1 mm of thickness you’ve applied. You’ll know for sure when you see that the wall is no longer gray, turns an even matte white all over, and feels hard and cool when you place your hand on it.

What are the real advantages of buying the materials from an online store instead of going to the warehouse?

Basically, you save yourself the trouble of loading weight into your car, getting it dirty, and queuing early in the morning. We deliver the pallets or individual bags to your site within 2 to 5 days. Plus, you can compare the price per kilo without anyone rushing you and take advantage of occasional discounts on the website.

Is it necessary to apply a coat of primer to the wall before the final paint?

Yes, it's essential. Fresh plaster absorbs a huge amount of water. If you apply the paint directly, the wall will soak up the liquid, you'll end up with roller marks everywhere, and you'll use twice as many cans. A good coat of water-based primer seals the pores and solves the problem at its root.