How to waterproof the old tile roof? What are the waterproof materials?

Waterproofing project is an indispensable key step in the transformation of urban housing or rural self-built houses. If waterproofing is not done well. That will bring some unnecessary troubles to everyone's future life, so everyone must pay attention to waterproofing, so how can the old tile roof be waterproof? What are the waterproof materials? Let's take a look together.

How to waterproof the old tile roof?

1, the demand of the base surface

The base surface must be cleaned, the water content shall not exceed 9%, and compacted and leveled, and then the convergence of each connection point must be neat, intact and conform to the regulations.

2, the first waterproof layer

1) soft waterproof layer, as long as you choose paint or waterproof coiled material. The water content of foundation surface specified in the construction requirements generally does not exceed 9%, so it is suitable for summer construction with hot weather and five consecutive sunny days. After completion, water storage test should be done;

2) If the paint is waterproof, take "one cloth and two coats" as an example: after the bottom layer is cleaned, you can also brush the paint once, dry it to form a film, lay a layer of glass fiber cloth for reinforcement, brush a layer of paint on the development surface for fixation, and then dry it before the next paint construction. The total thickness of waterproof coating should be above 3mm;

3) In case of waterproofing membrane construction, the bottom layer is cleaned, and after the adhesive is applied to the back and base of waterproofing membrane, it shall be pasted and rolled layer by layer from far and near according to a good benchmark, and the next step is to check and solve the seam convergence.

3, the second waterproof layer

The rigid waterproof layer must be laid up and down two days after the completion of the first flexible waterproof layer, and then the related construction is carried out. The high fatty acid cement mortar waterproofing agent, concrete, sand, fine stone and chemical fiber are mainly used as basic raw materials, and the thickness of the waterproof layer should be 20-30 mm;

1) Assemble the frame plate according to the specifications and standards, and the frame setting is 4000mm×4000. Then sprinkle water to make the base surface wet, but no water can be stored;

2) According to the order from far to near, low first and then low, construct better cement mortar or pisolite concrete layer by layer, and construct it once in the same frame, leveling and tamping;

3) After initial setting, dismantle the frame plate and polish and repair the frame joints;

4) Soft rubber seal is selected to fill the full grid joint to solve the problem of surface wrapping. Pay attention to sprinkler maintenance after construction;

5) If there is flat-topped foundation soil, cover it in the shortest time.

What are the roofing waterproof materials?

1, elastic cotton waterproof coating

A variety of polymer modifiers are added to the elastic cotton waterproof coating, which improves the waterproof performance of general waterproof products, has strong stretch plasticity, can cover cracks, and has the advantages of non-toxicity and environmental protection.

2. Polyurethane waterproof coating

In fact, polyurethane waterproof coating does not contain some additives at all, such as nicotine, leaching, etc., which has strong cohesiveness and high compressive strength. It can also be prepared into various colors as required, and has the characteristics of low carbon, environmental protection, non-toxic, tasteless, simple construction and convenient maintenance.

3, acrylic waterproof and anticorrosive coatings

Propylene-based waterproof and anticorrosive coating is a national key product, which is durable, has very good corrosion resistance, impermeability, very high cohesiveness and anticorrosive effect, and can also be used as a wall and ground solution for engineering buildings.

4. Epoxy resin cement permeates and crystallizes waterproof raw materials

Epoxy mastic permeable crystalline waterproof raw materials belong to new waterproof raw materials, which are made of fly ash cement, quartz sand and other raw materials mixed with active compounds, with superior performance, stable performance and simple construction.

5, plastic waterproof coating

Plastic waterproof coating belongs to compound water-soluble waterproof coating, which has the characteristics of aging resistance, high temperature resistance, good tensile strength, strong adhesion, wear resistance, simple construction and immediate brushing or brushing.