Which side is the adhesive side of the asphalt waterproofing membrane facing?

The adhesive surface of the self-adhesive membrane is best to be waterproof, because if the water-facing surface is done, we all know that the self-adhesive surface of the self-adhesive membrane will be reduced in the year of water, and even there is no viscosity, which will affect the waterproof effect.

Since there are many types of self-adhesive waterproofing membranes, their uses and construction methods are also different, and there are two main methods.

1. Normal self-adhesive paving method: the coil is directly paved or wet paved with polymer cement cementitious material and pasted on the base layer. During the construction of the bottom chamber floor, the concrete cushion is leveled with cement mortar, and then the bonding surface of the membrane is facing downwards and pasted on the leveling layer, and the membrane surface is poured with a 50-thick fine stone concrete protective layer, and then the steel bar is poured on the bottom plate concrete.

During the construction of the wall panel, the membrane is directly pasted on the basement wall panel, and then the outside is used as a protective layer.

Commonly used modified asphalt self-adhesive waterproofing membrane, modified asphalt wet paving membrane usually adopts this method.

2. Pre-paved anti-adhesive method: This kind of coil is mainly synthetic polymer self-adhesive coil, with single-sided self-adhesive or double-sided self-adhesive. During the construction of the bottom plate, the bonding surface of the coil is facing the sky, and the membrane surface is not made a protective layer, and the reinforced concrete is poured on it.

During the construction of the wallboard, the spacing between the foundation pit enclosure and the structural wallboard is too small, the enclosure structure is used as the outer template of the concrete structure wallboard, the wallboard only supports the inner mold, the waterproof membrane is nailed to the enclosure structure with nails, the bonding surface is facing the basement structure, and the concrete is directly combined with the bonding surface of the waterproof membrane.

3. Summary: When normal self-adhesive waterproofing, the bonding surface of the bottom plate membrane faces the water surface, and the wall board faces the back water surface; In the case of pre-paving and re-adhesive, the adhesive side of the bottom plate coil is facing the back water surface, and the wall board is also facing the back water surface.

(1) The staggered seam of the membrane is paved parallel to the roof ridge.

When the asphalt waterproofing membrane is equal to the roof ridge paving, the first row of the first layer of the cornice should be paved with a long strip of membrane of 1 3 widths first, and the membrane of full width should be paved in order upwards; The first row of the second layer should be paved with a long strip of coil with a width of 2 3 widths; Roll the full width of the roll in order upwards; The first row of the third layer is paved with full-width rolls at the beginning, so that the seams between the upper and lower layers are staggered to a width of 1 3. If the width of the roll is not less than 1 2 along the center of the ridge, the width of each side of the ridge is 1 4.

2) The staggered seam of the membrane is paved perpendicular to the roof ridge.

When the asphalt waterproofing membrane is paved perpendicular to the ridge, it should start from one end of the gable, and the first row of the first layer on the side of the gable should be pasted first, and the long strip of membrane of 1 3 width should be pasted first, and the membrane of full width should be paved to the left in turn; The first row of the second layer shall be paved with a long strip of 2 3 width of coil, and adjacent to the whole width of the coil shall also be paved; The third layer is covered with full-width rolls from the first row. In this way, the laminated coils can be staggered and overlapped.

The paving of each layer of membrane must be carried out alternately on two slopes, and two or three layers of membrane shall not be paved on one slope first, and then another slope shall be paved. The lap joint of the membrane shall not be left at the ridge, and the ends of the two slopes of the membrane shall not be allowed to meet at the ridge. The length of the staggered lap of the end of the membrane over the ridge must not be less than 250mm to enhance the waterproofing and durability of the ridge.

Summary. The specific requirements for the laying of waterproof membrane are as follows: 1. When the slope of the roof is less than 3%, the membrane should be paved parallel to the ridge.

2. When the roof slope is 3%-15%, the membrane can be paved with parallel or perpendicular ridges. 3. When the roof slope is greater than 15% or the roof is vibrate, the asphalt waterproofing membrane should be paved vertically, and the polymer modified asphalt waterproofing membrane and synthetic polymer waterproofing membrane can be paved with parallel or vertical ridges. 4. The upper and lower layers of coils shall not be perpendicular to each other.

This step of waterproofing construction is quite important.

The waterproofing membrane is paved in two directions, what is commonly called?

The specific requirements for the laying of waterproof membrane are as follows: 1. When the slope of the roof is less than 3%, the membrane should be paved parallel to the ridge. 2. When the roof slope is 3%-15%, the membrane can be rolled parallel or perpendicular ridge paving.

3. When the roof slope is greater than 15% or the roof is vibrate, the asphalt waterproofing membrane should be carefully prepared for the vertical roof for ridge paving, and the polymer modified asphalt waterproofing membrane and the synthetic polymer waterproofing membrane can be paved with parallel or vertical vertical ridges. 4. The upper and lower layers of coils shall not be perpendicular to each other. This step of waterproofing construction is quite important.

The sequence and direction of the paving of the waterproof layer of membrane dust shall comply with the following provisions:1The lap seam of the short side of two adjacent coils on the same layer should not be less than 500mm; 2.

The lap joints of parallel ridges should follow the direction of the flowing water. 3.The lap joints dug perpendicular to the roof ridge should be lapped in the direction of the core of the wind bucket at the maximum frequency of the year.

This is my answer, I hope it is helpful to you, thank you for your concern.