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A1 academy

A1 Sealer PLUS

A1 Sealer PLUS Gloss
A1 Sealer PLUS Satin
A1 Sealer PLUS Matt

1.0 A1 Sealer PLUS is a water-borne coating system to protect the A1 object from weather influences such as moisture and UV radiation.

All objects in an outdoor environment are subjected to weather influences that have an erosive effect on the A1 object. Our A1 Sealer PLUS has a protective effect against these influences.

There is a choice of A1 Sealer PLUS Matt, Satin and Gloss. For the most matte result we recommend first applying a layer with the A1 Sealer PLUS Satin and then a layer with A1 Sealer PLUS Matt.

The advantages are: 1 component, solvent-free, water-based, quick-drying, easy to apply, good UV resistance, excellent adhesion, protection against dirt absorption and good protection against moisture.

Data:

  • Min. processing temperature: 10°C
  • Average consumption: 8-10 m² per litre
  • Storage life: 1 year in closed package
  • Storage: Store frost-free and out of
    direct sunlight

2.0 Application of A1 Sealer PLUS

  1. The surface to be sealed must be free of wax, oil, dirt or dust.
  2. Apply with a brush, roller, or by spray.
  3. When spraying, we recommend adding 20% water.
  4. After application, the A1 Sealer PLUS should be rubbed out with a dry cloth when it is still damp. When spraying the A1 Sealer PLUS it is not necessary to polish the A1 Sealer PLUS.
  5. Each layer has a drying time of 15 to 45 minutes, which also depends on temperature and humidity.
  6. A1 Sealer PLUS may be applied in 1 to a maximum of 3 layers to improve the protective properties.

The A1 Sealer PLUS is a so-called breathable coating. In addition to any residual moisture after production, A1 absorbs water to a limited extent if placed in a highly humid environment and this water is also (many times faster) released again in a dry environment. 

With the help of this breathable (vapour open) A1 Sealer PLUS any remaining and/or absorbed moisture can easily leave the A1 object.Therefore, avoid applying too thick a layer of A1 Sealer PLUS as this may close the A1 object.

The consumption of the A1 Sealer PLUS per kg applied by brush is 8 to 10 m².

The consumption for spraying the A1 Sealer PLUS per kg is 10 to 12 m².

We suggest reapplying the A1 sealer PLUS every 6 years or when the A1 object and/or A1 sealer PLUS is damaged.

3.0 A1 Top Finish
A1 Top Finish is a 100% vapour permeable, high-quality waterborne impregnating agent based on silane/siloxane and penetrates deep within the surface and leaves a long-lasting water repellent effect. We suggest to add one layer of A1 Top Finish on the layers of A1 Sealer PLUS to achieve extra water repellent effect and maintaining a damp open coating system.

4.0 Waterproof
The A1 objects lie in the grass. They all had at least 2 layers A1 Sealer PLUS. Today I turned the long and the short object. The bottom has turned brown! The A1 Sealer PLUS makes them waterproof, right?

The A1 Sealer PLUS is not waterproof, but breathable. The brown colour is probably caused by the moisture in the soil. Two layers of A1 Sealer PLUS is usually sufficient, but with prolonged moisture loading, which is the case here, there is a risk of discolouration.

A1 Sealer PLUS will make your object better protected against influences from water and also UV. However it will not make the A1 object 100% waterproof. 

5.0 Inspection and renewal of A1 Sealer PLUS
We recommend reapplying the A1 Sealer PLUS every 6 years. Furthermore, we recommend that you check the A1 object annually for possible damage to the A1 Sealer PLUS so that it can be repaired immediately. This inspection is also a good opportunity to clean the A1 object if necessary.

6.0 Patinate with A1 Sealer PLUS
A1 can also be patinated by adding pigment to the A1 Sealer PLUS. By applying it with a brush, cloth or syringe you can achieve different effects. It is also possible to use different colours on top of each other.

We recommend using an unpigmented layer A1 Sealer PLUS as the last layer.

7.0 Does the A1 Sealer PLUS give enough weather protection for A1 objects?
Applying our A1 Sealer PLUS will give the A1 object enough protection against weather influences. Apply 3 layers (not more) of A1 Sealer PLUS for optimum protection. Also make sure to inspect and if needed to repair the A1 object.

Of course also other factors, like the use of the non water absorbing fillers, no possibility of water entrapment in the A1 object and external influences like vandalism are important factors in the protection against outdoor environment influences.

Coatings (for outdoor use)

For outdoor use you can choose several coating systems. Most common systems are: A1 Sealer PLUS, 2K PU, Keim or other exterior wall paint.

8.0 A1 Sealer PLUS
A1 Sealer PLUS is the most common one-component sealer to protect A1 products for outside use. It is easy to apply in one or more layers. The more A1 Sealer PLUS you apply the more gloss will appear (with a max. of 3 layers). It also can be used as a base resin to decorate and give products a natural look.

9.0 Advantages of the sealer:
one component, solvent free, easy to apply, good UV resistant, protection against dirt pick up, quick drying, excellent adhesion and good humidity protection.

By our users also other coatings and sealers are used to enhance and/or protect the desired aesthetic properties (aesthetic and performance) of the A1 objects upon which they are applied. Below, you will find a list of several coatings/sealer’s that (appears to) work well with A1. Information is based on projects from the past and achieved results after ageing in Weathering/UV cabinets. Depending on climate in different parts of the world, the lifespan and maintenance time of the different coating systems can vary.

10.0 Exterior wall paints
Exterior Wall Paints are available in a variety of brands and formulations, all with their specific features. Keim Soldalit is a Multi-purpose, silicate exterior paint on a sol silicate binder basis (combination of silica sol and water glass) for organic, mineral and mixed substrates. KEIM Soldalit is water-repellent, highly water vapour permeable, lightfast, UV-stable, extremely resistant to weathering with minimal soiling tendency.

11.0 2K Polyurethane coatings
2K Polyurethane coatings are available in a variety of brands, formulations and qualities. Baril 269 Poluran Clear Coat 75 is a high-quality coating with excellent adhesion on A1 composite products. This Semi-Gloss transparent coating is easy to apply and has high abrasion, chemical, mechanical and impact resistance. The good flexibility and weathering/UV resistant results in a long-lasting protection of products made of A1. Be aware that 2K coatings are NOT vapour permeable, which could create water entrapment, if the A1 application is also closed on the back and not fully cured.

12.0 Acrylic paint, oil paint or lacquer
For indoor use, the A1 object can be finished with acrylic paint, oil paint or lacquer, provided that the adhesion of the paint has been tested beforehand.

If you choose such paint and final lacquer (matt or high gloss), we recommend, in addition to testing, to observe the following points:

  • make the object inside,
  • dry and cure the object,
  • paint the object (drying time on the advice of the paint supplier),
  • (if needed) then varnish (drying time on the advice of the supplier),
  • do not use the A1 Sealer PLUS.

For outdoor applications, such coating systems can interfere with the breathability of A1, which can lead to flaking of the coating layer

13.0 Can I extend the life of A1 with a damp open coating system?
A damp open coating system, like our A1 sealer PLUS but also wall paints will extend the life of an A1 object when placed in an outdoor environment. The coating system will not only reduce moisture effects but also protects against UV. The main effect is that the top layer of the A1 object will not be affected by these weather influences as much as without a coating. That’s also why we recommend inspecting your A1 object at least one a year on damages and repairing them as soon as possible.

14.0 Could you recommend a paint brand that is a damp-open paint system and works on A1 objects?
Sorry, but based on the many paint systems available it is impossible for us to test them. Also because a proper test would require a testing period for many years. That is why we can not give you any suggestions on what paint brands to use. 

15.0 Must the residual moisture in the A1 object be evaporated before coating the A1?
To get the best result when finishing the A1 object with a closed painting system you need to make sure residual moisture has evaporated. As a rule of thumb we suggest placing an A1 object for at least 7 days in an area with room temperature and a humidity below 70%.
 
Be aware when using a closed painting system not to place the A1 object in an outdoor environment.  
16.0 Should I use the A1 sealer after I have painted the A1 object?
If you have painted your A1 object you should NOT use our A1 Sealer PLUS. Normally the paint systems will provide enough protection against weather influences. An extra layer of A1 Sealer PLUS might disturb this or in a situation of a damp-open paint stops the damp-openness of the paint. Of course regular inspection is always recommended.
 
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Disclaimer: All (technical) advice and treatment and the possible applications regarding the products are given without obligation, and to the best knowledge and effort, as well as the current state of technology, without an obligation to create results and without any liability. We recommend that the prospective user determines the suitability of our materials and suggestions before adopting them on a commercial scale.