Fireproof windows are commonly used fire safety facilities in buildings. According to the standard provisions of fireproof windows, the sealing material between the fireproof window frame and the fireproof glass should be fire-resistant materials, which can play a better role in fire prevention and smoke separation in case of fire. So, what material is usually used for caulking fireproof windows? What are the construction methods and steps of fireproof window caulking? I have made a detailed summary for you today. Let's take a look.

1、 Common materials for caulking fireproof windows

1. Fire resistant, crack resistant and leak proof mortar

The gap between the fireproof window frame and the concrete window opening is filled with fire-resistant, crack resistant and anti leakage mortar, which is more secure and dense, and has stronger fire-resistant and anti leakage effects. The main components are: 5-15 parts of expanded graphite, 8-12 parts of refractory mud, 5-10 parts of high-strength polystyrene particles, 20-30 parts of Portland cement, 35-45 parts of calcium aluminate cement, 3-7 parts of organic binder, 1-2 parts of waterproof agent and several auxiliary materials. Add appropriate water and mix evenly.

Rui'andun fireproof window

2. Building sealant

Building sealant can also be used for caulking fireproof windows. Building sealant can be used for sealing various joints or holes of buildings, and has good functions of heat preservation, sound insulation, waterproof, dust-proof, gas proof, fire prevention, corrosion prevention, shock absorption and preventing foreign matters from accumulating at joints. The construction sealant is mainly composed of dry or non dry viscous substances such as asphalt, natural resin or synthetic resin, natural rubber or synthetic rubber as the base material, together with inert fillers such as talcum powder, clay, carbon black, titanium dioxide and asbestos, and then added with plasticizer, solvent, solidification agent, accelerator, etc.

2、 Construction method and steps of fireproof window caulking

1. The fireproof window frame shall be installed horizontally and vertically to ensure consistent level and straightness from top to bottom. When the fireproof window frame is fixed with the wall, the upper frame shall be fixed first and then the frame, which shall be fixed with plastic expansion bolts. The inner cavity of the expansion joint between the fireproof window frame and the opening shall be filled with closed cell foam plastic, foaming agent and other elastic materials, and the surface shall be sealed with sealant.

2. Put the fireproof window frame into the concrete window opening; The fireproof window frame is reinforced and connected with the concrete tongue and groove window opening structure through the fastener; Pour the fire resistance, crack resistance and leakage prevention mortar into the gun; The fire resistance, crack resistance and leakage prevention mortar shall be poured into the gap between the fire window frame and the concrete tongue and groove window opening through the pressure gun.

3. When the splicing material is connected with the brick wall, the two ends of the splicing material shall be inserted into the reserved hole first, and then fixed with C20 fine aggregate concrete. The two window frames shall be clamped with the splicing material, and then the fasteners shall be tightened in both directions with a distance of less than 4 cm. The gap between the fastener end and the frame material and the window bar shall be sealed with sealing strip. When the door and window are connected with the wall by the embedded wood brick method, the wood brick shall be subject to anti-corrosion treatment.

4. The inner cavity of the expansion joint between the fireproof window frame and the opening shall be filled in layers with closed cell foam plastic, expanded polystyrene and other elastic materials, and the surface shall be sealed with sealant. The surface of the fireproof window shall be clean, free of scratches, bruises and rust, and the gluing surface shall be smooth, flat and even without pores.

3、 Cautions for caulking construction of fireproof windows

1. The fireproof window must be firmly installed. The number, location and embedding connection method of the embedded parts must meet the design requirements. There should be no less than three fasteners used to fix each reinforced section steel. The spacing should be no more than 3cm, and the distance from the end of the section steel should be no more than 1cm. Small holes with embedded iron parts shall be fixed by welding, or basic holes shall be made on the embedded parts according to the specifications, and then fixed again.

2. It is forbidden to install scaffolding or hang heavy objects on the fireproof window frame, and it is forbidden to step on the window frame, window sash or window stile. If the surface of the fireproof window is stained, it should be cleaned with water soluble detergent, and it is forbidden to scrub with rough or corrosive chemical liquids.

3. The fireproof window frame is fixed on the concrete window opening structure by fixing pieces, and the gap is filled with fire-resistant, crack resistant and seepage resistant mortar, which makes the fixation more secure, with strong adhesion, crack resistance, leakage resistance and better fire-resistant effect.

The above is the answer about what material to use for caulking the fireproof window. I hope it can be helpful to everyone. The fireproof window caulking, fireproof and leakproof structures usually include concrete window openings; Fireproof window frame, set in the concrete window opening; The fastener is set on the fireproof window frame to connect and fix the fireproof window frame and the concrete window opening. The fireproof window frame includes a glass installation end and a window opening connection end. The glass installation end is a groove structure, the groove is paved with a fireproof layer, and the window opening connection end is provided with an extension hook. Henan Rui'andun Door Industry Co., Ltd. is a manufacturer of fireproof windows with superior fireproof performance and high reliability. It can provide considerate after-sales service and technical guidance. Interested parties are welcome to call or leave a message for consultation.