Key takeaways
5 min read
Key point 1
The ALU-CLICK® system installs with no silicone and no visible fixings from the outside thanks to its plate with a built-in bituminous joint and the profile's mechanical snap-fit.
Key point 2
The 12/10 mm polyester-painted aluminum with 25 microns of polyester lacquer on both sides resists corrosion, UV radiation, and coastal climates with no noticeable degradation.
Key point 3
Bituminous sealed joints eliminate the main maintenance item of traditional wall caps: no silicone to crack and no joints to re-seal every few years.
Key point 4
Made-to-measure manufacturing from 70 mm to 600 mm wide lets the wall cap fit the project's exact wall, avoiding on-site cuts and adjustments.
Key point 5
Industrias Mas has manufactured aluminum for construction since 1968, with over 10,000 projects completed in Spain and ISO 9001:2015 certification.
In this article
- 1. No On-Site Silicone or Sealant
- 2. No Visible Fixings From the Outside
- 3. High-Durability Polyester-Painted Aluminum
- 4. Made to Measure From 70 mm to 600 mm
- 5. Maintenance-Free Bituminous Sealed Joints
- 6. Controlled Thermal Expansion
- 7. Four Stock RAL Colors and the Full Chart on Request
- A Note on Experience and Credibility
- Frequently asked questions
When the time comes to choose a wall cap, the decision usually comes down to concrete, ceramic, or aluminum. Within aluminum, not all systems are equal: some still use silicone in the joints, visible screws, or stock pieces requiring on-site cuts. Industrias Mas's ALU-CLICK® system eliminates all these weak points with a different technical approach. Here are the seven reasons it has become the reference choice in new construction and qualified renovation across Spain.
Section 02
1. No On-Site Silicone or Sealant
The system's main innovation is the ALU-CLICK® plate, which incorporates a built-in bituminous sealed joint. When screwed onto the top of the wall, the joint seals the contact with the substrate and prepares the surface the top profile snaps onto. There are no sealant beads to apply, no curing time, no risk of the sealant cracking over the years. The seal is guaranteed by the mechanical system, not by a consumable that degrades.
Section 03
2. No Visible Fixings From the Outside
On a conventional screwed wall cap, screw heads remain visible on the top surface, where they take rain and sunlight directly. Over time, rust, staining, and loss of appearance follow. In the ALU-CLICK® system, fixings stay hidden inside the plate, and the top profile covers the entire screwed area. The exterior finish is a continuous line of polyester-painted aluminum, with no interruptions.
Section 04
3. High-Durability Polyester-Painted Aluminum
The profile is manufactured in 12/10 mm polyester-painted aluminum with 25 microns of polyester lacquer applied to both sides. Coating both sides matters: the visible face is protected against UV and salinity; the inner face, hidden against the wall, is protected against condensation and possible dampness from the substrate. This is what differentiates professional polyester-painted aluminum from sheet metal painted on only one side, where corrosion usually starts precisely on the unseen face.
Section 05
4. Made to Measure From 70 mm to 600 mm
The wall cap is manufactured to measure for the actual wall, in exact increments from 70 mm to 600 mm wide. The profile always adds 25 mm of lateral overhang on each side and a 45 mm vertical drop per side, dimensions designed to keep water away from the wall face. This customization eliminates on-site cuts, which is where sealing errors usually occur in standard wall caps.
Section 06
5. Maintenance-Free Bituminous Sealed Joints
Bitumen is an elastic, adhesive material that doesn't crack over time, doesn't degrade under UV radiation (it stays hidden under the profile), and keeps its sealing capacity for the coating's entire service life. Compared to the well-known silicone wall-cap cycle (seal, inspect at 3–5 years, re-seal at 7–10 years, repeat), bituminous joints need no intervention. This is especially relevant for owners' associations and developers who value maintenance cost over the building's life cycle.
Section 07
6. Controlled Thermal Expansion
Aluminum expands and contracts with temperature changes more than concrete or ceramic. The ALU-CLICK® system resolves this with a calculated gap between consecutive pieces: 4 mm of clearance in summer and 8 mm in winter (the difference is adjusted at the time of installation). This gap lets the aluminum breathe with no stress transferred to the sealed joint and no profile deformation. In areas with large thermal swings, this detail is what sets a system designed for aluminum apart from one merely adapted to it.
Section 08
7. Four Stock RAL Colors and the Full Chart on Request
The system is delivered in four standard finishes ready in stock: anthracite grey (RAL 7016), natural (RAL 9006), white (RAL 9003), and dark grey (RAL 7022). Any other RAL color is manufactured on request with no significant lead-time penalty. This allows the wall cap to be integrated with the facade's color palette — dark window frames, light SATE insulation, ventilated metal facade — rather than imposing a catalog color.
Section 09
A Note on Experience and Credibility
Industrias Mas has manufactured aluminum for construction in Tàrrega (Lleida) since 1968. Over more than 55 years of operation, the company's products feature in over 10,000 projects completed in Spain, from single-family homes to large multi-family developments and industrial buildings. Manufacturing is carried out under ISO 9001:2015 certification, and the sales team prepares custom quotes within 24 business hours based on the project's measurements. To learn more about the system in detail or request a quote, visit the ALU-CLICK® wall cap page.
FAQ
Frequently asked questions
What makes the ALU-CLICK® wall cap different from other aluminum wall caps?+
Three main technical differences: the ALU-CLICK® plate has the bituminous sealed joint built in, eliminating on-site silicone; the profile snaps mechanically onto the plate, hiding all fixings from the outside; and manufacturing is made to measure in 12/10 mm polyester-painted aluminum with 25 microns of polyester lacquer on both sides, bringing far greater durability than standard polyester-painted sheet metal.
Is it really faster to install than a traditional wall cap?+
Yes, for two reasons. First, there's no preparation or curing time for silicone: the bituminous joint is already built into the plate and seals by compression on screwing. Second, snapping the profile onto the plate is an immediate mechanical action, with no need to bed pieces in mortar or apply sealant beads. The time saved on-site translates directly into lower labor costs.
Does ALU-CLICK® aluminum hold up in coastal areas and freezing climates?+
Yes. The 25-micron polyester coating applied to both sides of the profile protects the aluminum against salinity and UV radiation, making it suitable for Spanish coastal areas. For climates with frost, the key is respecting the expansion gap between pieces: 4 mm in summer and 8 mm in winter. Respecting this clearance lets the aluminum handle thermal cycles with no deformation.
What manufacturing guarantee does Industrias Mas offer?+
Manufacturing is carried out in Tàrrega (Lleida) under the ISO 9001:2015 quality system since the company's founding in 1968. Industrias Mas has over 10,000 projects completed in Spain with its aluminum construction products, giving it a very broad experience base across wall types, climates, and on-site solutions.
In what cases is the ALU-CLICK® wall cap not recommended?+
For wall widths over 600 mm, specific solutions need to be considered, since the system's standard range covers 70 mm to 600 mm. In renovation projects on traditional ceramic-tile facades where strict historical aesthetics are required, ceramic coping may offer more visual coherence. In these cases, it's worth consulting the technical team before finalizing the solution.
