Sealing of Joints between Precast Concrete Elements - Inside and Outside with InnoElast®
InnoElast® systems are modern, 1-component sealants with universal applications. InnoElast® sealants can be used to seal expansion and connection joints reliably and permanently, both internally and externally.
InnoElast® sealants possess excellent adhesive and application properties, which is why they can be used without primer on grounds such as concrete, stone, wood, metal and many others. InnoElast® can also be used on moist concrete surfaces as low as -3°C. InnoElast sealant paste is solvent-free with exceptionally low shrinkage.
In this case, the sealant paste is so stable that joints 5 cm wide can be safely filled before it hardens into an elastic, rubber-like material.
Advantages of InnoElast® type 1
Advantages of InnoElast® type 2
Soft and permanently elastic InnoElast® Type 1 is a sealant with a high movement absorption rate of ±25%. Expansion joints in facades and interior and exterior gangways are typical uses. Harder, permanently elastic InnoElast® Type 2 is used to seal construction joints against pressurised water. It is extremely robust, resistant to many chemicals, and with stands pressurised water up to a 4.8 m water column. Joints in the cellar and wastewater sector are typical uses. You can view the application of InnoElast® in our product video.
InnoElast type 1 application areas:
InnoElast type 2 application areas:
Do you have questions?
1. Do the joints have to be cleaned?
Yes, the joint flanks must be dry and free from dust, grease, loose parts, ice and other separating mate-rials. However, the joint flanks can be damp without a visible film of water.
2. When should I choose InnoElast® type 1
For expansion joints with movements of up to 25%, for joints on which only rain falls and no water pressure develops.
3. When should I choose InnoElast® type 2?
For joints exposed to chemicals (acids, alkalis, certain fuels), for joints exposed to pressing water up to 4.8 m water column and for joints that adjoin bituminous materials / coatings and should be sealed.
4. When does the skin formation take place?How long does it take to harden?
The first skin formation takes place after about 2 hours (15 min in the case of InnoElast 2) at 23 °C and 50% rel. humidity. The hardening of the joint sealant can be expected to progress at 2-3 mm / 24 hrs. At low temperatures, the speed of reaction and thus the hardening are slowed down.
5. Are there any material incompatibilities?
Yes, InnoElast® 1 is not compatible with solvents such as petrol, some acids and acetic acid. The product softens and swells on contact. In areas subject to chemical loads, please use our InnoElast 2, which has a high chemical resistance.