Alucomex® Silicone for joints

Professional Grade


Contains a neutral core, architectural sealant for any building front, including aluminum composite panel, natural aluminum, and glass. It is applied outdoors in any type of weather conditions and seals quickly at room temperature, durable and flexible silicone.


A cartridge yields 5.69 m, in 7 × 7 mm joints, considering a 7% waste.

Usefull lifetime

It has a shelf life of 12-18 months, from the date of its production, stored dry or open space at a temperature equal to or lower than 30 ° C in the original container without being opened.


  • It does not require any maintenance.
  • If the seal is damaged, replace the damaged section by cleaning the surface before applying the new sealant.



Design of joints

  • When you have joints with depth between 6 mm and 12 mm it is necessary to use silicone.
  • A properly designed moving joint will have a width of 2: 1 relative to depth.
  • The expansion and contraction of the joints is caused by the season and daily temperature changes.
  • El ancho de las juntas diseñadas se estima al menos con un movimiento al doble o cuádruple para evitar errores de materiales y aplicación.
  • The size of the joints must be obtained through the calculation of movements, especially when the width must be wider, necessary for plastic edges with more pronounced thermal expansions.


Surfaces to be sealed must be sound and free of contaminants. In the case of smooth surfaces (such as glass, metal, etc.), cleaning is done with the two-pad technique, which consists of wiping the surface with a cloth (lint-free) impregnated with isopropyl alcohol and immediately removing all the impurities with another clean, dry cloth.


Mask with masking tape on the surfaces delimiting the area to be sealed. Insert Alucomex® Silicone into the cartridge gun, cut off the top of the cartridge. Then place the pipette and cut at 45 ° calculating the width of the joint to be sealed. Pull the gun trigger to depress the plunger and the product will flow over the joint. Apply the sealant in the form of a bead on the surface to be sealed. A minimum section of 7 x 7 mm and a maximum of 10 mm must be left.


Finally, a re-application will be made in the opposite direction to the application. by means of a straight spatula to achieve the necessary penetration in the joint, a better adhesion and to break the air bubbles that can be trapped during the application. At the end of the application, remove the masking, peeling in the opposite direction to the application in a continuous but controlled movement. The excess can be removed as soon as possible with a cloth dampened with water.


  • Prepare all your materials and tools to use.
  • Cut the nozzle from the silicone and adjust the gun to apply it.
  • Apply the silicone, sealing the joint without forming air.
  • Make sure that the silicone completely fills the cavity to be covered.


It is advisable to use adhesive tape as a working tool to control excess silicone with adjacent areas and ensure an aesthetic work. It is not recommended to apply primer on the silicone.


This silicone has a high resistance to weathering, however it is not suitable for structural use, it should NOT be applied in the following conditions:

  • Not for construction materials that contain or may emit oils, plasticizers or solvents, sulfur layers or tapes etc.
  • Not on prime painted surfaces, may cause paint cracks.
  • Do not apply to wet or icy surfaces.
  • Do not use on direct food contact surfaces.
  • Not in parts that easily suffer mechanical wear.
  • Do not apply to surfaces that may leak.