Sealants
Why can a sealant change colour over time?
In practice, discolouration is in most cases the result of external influences and not due to the quality of the sealant itself.
Why is my silicone sealant coming loose?
Possible causes include: poor substrate preparation, no primer used, or using the wrong sealant for the substrate.
Why is my silicone sealant cracking?
Possible causes include using the wrong sealant for the application, curing too quickly, or failing to respect the correct joint dimensions.
Why is my silicone sealant not drying?
Possible causes include: insufficient humidity, incorrect temperature, incorrect substrate and contamination, expired product, or a sealant layer that is too thick.
Which silicone should you use for a bathroom, toilet or shower?
In damp areas, a sanitary silicone sealant is recommended. It is waterproof, mould-resistant and elastic.
How do you store silicone sealant?
Store in a cool and dry place. Always check the expiry date. Opened? Seal the nozzle as well as possible.
Everything you need to know about expansion joints
A well-executed expansion joint is not only functional, but also contributes to the appearance of your project.
How can discolouration be prevented in sealants?
carefully cleaning substrates before application
avoiding direct contact with risk materials
using compatible tools and products
paying attention to the environment during curing
Is every smoothing product suitable as a tooling agent for sealants?
Not every smoothing product is suitable. We recommend always using a compatible, professional tooling agent.
Can other sealants affect the colour of the sealant?
Yes, reactions between acetic acid-containing and neutral silicones can cause yellowing.
Can masking tape affect the colour of the sealant?
Yes. When masking tape is used on or along the joint, adhesive residues may remain.
What role does protective film on panels play in the discolouration of sealant?
When the sealant comes into contact with remaining adhesive residues, this can lead to discolouration.
Which materials can cause discolouration of a sealant?
Rubber and rubber-like materials such as EPDM or neoprene. Bituminous products. Coatings, paints or varnishes containing wax components. Adhesives or adhesive residues.
Is yellowing of the sealant a product defect?
In almost all cases, it is not.
What is the best way to finish just applied sealant?
Finishing should always be done before the sheet forms.
How are joint sealants renovated?
Before renovation takes place, it is important to find out why the joint sealant was not sufficient.
How are elastic joints best cleaned?
Cleaning the joint seal must be done regularly.
What is the ideal dimension of a joint?
Joint sealants can only reach their full potential if they comply with a minimum and maximum width. We recommend never applying an elastic joint narrower than 3 mm or wider than 20 mm for acrylates, 30 mm for silicones and 50 mm for Parabond Construction...
How long is my sanitary silicone mould-resistant?
There is no date to attach to mold resistance of a product because it depends on many factors.
The silicone will turn yellow over time, why is that?
Silicones may yellow due to lack of sunlight or reaction with certain substrates.