👍Cómo Hacer TECHOS de Chapa SIMPLES | Aprende el ABC de un Techo de Lámina

Techo de Chapa: Criterios Básicos para su Instalación

Introducción al Techo de Chapa

• Se presenta el techo de chapa como una opción práctica, rápida y económica para cubrir casas. El presentador comparte su experiencia para evitar problemas comunes en la instalación.

Humedad de Cimientos

• Agradecimiento a la empresa "Humedad de Cimientos SA" por su patrocinio. Se menciona que llevan más de 50 años resolviendo problemas relacionados con la humedad en cimientos.

• El tratamiento contra la humedad consiste en perforaciones sobre el nivel del sócalo, donde se inyecta un líquido que cristaliza, formando una barrera efectiva contra la humedad ascendente.

Características del Tratamiento

• Este producto es seguro tanto para personas como para el medio ambiente y no requiere retirar los sócalos. Es efectivo en diferentes tipos de ladrillos y tiene una duración ilimitada.

• La aplicación es rápida; una vivienda típica puede completarse en poco más de medio día, además se ofrece una garantía escrita por 10 años.

Estructura del Techo

• El techo se divide en dos partes: la estructura (esqueleto) y la cubierta. Se abordará un diseño básico con caída simple, cubierto por un cielo raso.

Materiales Recomendados

• Se recomienda usar perfiles C galvanizados debido a su ligereza y resistencia a la corrosión, eliminando así la necesidad de pintura adicional.

Instalación del Techo

• La chapa plegada proporciona rigidez; se utiliza un plegado canalado o trapesoidal según las necesidades específicas del proyecto.

Distancia entre Perfiles

• Los perfiles deben colocarse aproximadamente cada 90 centímetros; distancias mayores pueden comprometer la estabilidad del techo mientras que distancias menores aumentan las perforaciones necesarias.

Fijación y Seguridad

• Los perfiles deben amurarse a las paredes entre 10 a 15 centímetros. Existen varias formas de fijarlos, incluyendo alambre trenzado o varilla soldada recubierta con pintura anticorrosiva.

Tamaño y Orientación de los Perfiles

• El tamaño de los perfiles varía según el soporte requerido; se utilizan perfiles de 12 cm para luces hasta 4 metros.

Thermal Insulation Techniques for Construction

Importance of Details in Construction

• Emphasizes the significance of minor details in construction, particularly regarding thermal insulation.

• Introduces a practical solution: using polyethylene foam as thermal insulation.

Characteristics of Polyethylene Foam

• Describes the structure of polyethylene foam, which contains air bubbles that provide insulation.

• Highlights the reflective properties of the aluminized surface that helps to block heat radiation.

Recommendations for Material Selection

• Advises choosing pure aluminum over aluminized polyethylene for better durability.

• Explains how to install the polyethylene mantle using fine wire structures or special lattice networks.

Installation Process and Considerations

• Discusses the use of polyurethane spray insulation as an efficient but more expensive alternative.

• Raises a critical question about whether to use single sheets or joined panels during installation.

Calculating Material Requirements

• Suggests ensuring overlaps are at least 30 cm to prevent leaks when joining panels.

• Provides guidelines on calculating sheet lengths based on wall thickness and additional allowances for slope.

Slope Recommendations for Water Drainage

• Recommends maintaining a minimum slope of 8 to 9 cm per meter to facilitate water drainage and prevent damage.

Finalizing Sheet Dimensions and Quantity

• Concludes with specific dimensions needed for sheets based on project requirements, including necessary overlaps.

Practical Tips for Sheet Installation

• Advises using self-drilling screws for easier installation, highlighting their efficiency in creating holes while securing sheets.

Key Installation Advice

• Suggestion to place screws at the crest of waves in corrugated sheets to minimize leakage risks.

• Recommends using pressure-reducing drills to avoid damaging sheets during installation.

How to Properly Finish a Metal Roof

Key Considerations for Using Screws

• It is recommended to use screws with a metal washer and vulcanized rubber. This type of washer conforms better, especially on corrugated sheets, reducing the risk of tearing and moisture penetration.

Understanding Roof Terminations

• A typical metal roof has four terminations: one at the top, one at the bottom, and two on the sides. Proper attention to these terminations can significantly reduce moisture ingress.

Managing Eaves and Overhangs

• When eaves are not feasible for aesthetic reasons, ensure that the edge of the sheet aligns closely with the wall. The overhang should be between 8 to 9 centimeters when attached directly to the wall.

Options for Side and Top Finishes

• There are two main options for finishing:

• Constructing a containment wall (referred to as "carga" or "mojinete") no taller than 20 centimeters.

• Using folded edges known as "cenefas" which effectively cover where the sheet meets the wall.

Aesthetic vs. Functional Choices

• From an aesthetic perspective, a containment wall may look better; however, from a moisture protection standpoint, folded edges (cenefas) are more effective in preventing leaks.

Addressing Material Expansion Issues

• It's crucial to understand that masonry and metal expand differently; this discrepancy often leads to cracks. To mitigate this issue, it is advisable to cover problematic areas with a fold called "babeta."

Importance of Babetas in Leak Prevention

• Babetas help shield vulnerable joints from direct water impact during rainstorms. Detailed guidance on installing babetas will be provided in future videos due to their complexity.

Additional Resources on Metal Roof Installation

• The speaker mentions having created over 20 videos dedicated specifically to metal roofs covering various topics such as insulation against cold/heat and maintenance tips. Viewers are encouraged to explore these resources for comprehensive insights.

Community Engagement Encouraged