15 key points, handle self-sticking waterproof coil construction!

Self-adhesive waterproof coil is a new waterproof material, compared with similar materials, with simple construction, good waterproof performance, pay attention to environmental protection and other advantages.
self-adhesive waterproof coil compared with ordinary waterproof material, has the following characteristics:
1, cold construction at room temperature, do not need hot melt. Construction as long as the peeling of isolation paper, can be directly paved, construction is extremely convenient, can effectively shorten the duration;
2, with a high tear strength, can effectively resist the grass-roots cracking, deformation stress on the waterproof system damage,
3, with a very high penetration, impact resistance performance,
4, excellent bonding to ensure the continuity and sealing of the coil seam,
5, high and low temperature, anti-aging, long service life of
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6, in the construction method, the work method has the following characteristics:
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1) construction process perfect, simple, operability, low labor intensity
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I, process principle
self-adhesive rubber asphalt waterproof coil, is based on SBS and other elastomer asphalt, polyethylene film, aluminum foil as a surface material or filmless (double-sided self-stick), the use of anti-stick isolation layer of self-adhesive waterproof coil. The waterproof coil has a strong bonding strength, the special rubber self-adhesive layer can ensure that the coil and the base, coil and coil bond seal, forming the overall seal waterproof layer. It has good resistance to acid-base corrosion and other chemical media erosion. The surface of the self-adhesive coil has HDPE, has a high tear strength, meets the requirements of puncture resistance, and can effectively resist the stress caused by grass-roots cracking and deformation on the waterproof system.
2, process flow
1, dry paving method
grass-roots surface cleaning, repair→ brushing matching grass-roots treatment agent → node site paste → positioning, bullet baseline→ paved self-adhesive rubber waterproof coil → roll pressure, exhaust → end treatment and tie-in → → tissue acceptance→ protective layer construction.
2, wet paving method
clean the base surface → wet grass (such as the grass moisture does not need this process→ positioning, bullet line→ stirring and laying cement slurry→ paving roll → pulping, exhaust, drying→→→
3, construction technical points
1, the overall labeling order of coils is: first high span, then low span;
2, bottom coating: the base surface clean acceptance, the special grass-roots treatment agent evenly painted on the grass surface, brushing in one direction, thick and uniform, do not leak bottom, do not accumulate, dry until the finger touch is not sticky.
3, bullet line, test shop: on the bottom coating according to the actual hitching area pop-up paste control line, strictly according to the paste control line test paving and the actual sticky roll material, to ensure that the coil material lifting width in 6 to 7cm (roll material marked). According to the characteristics of the scene, determine the density of the bullet line, in order to ensure that the coil paste straight, will not be due to cumulative errors and paste skew phenomenon. The coil should be tested in place, according to the need for the shape of the correct clipping, before you can start the actual sticky shop.
4, node processing:
(1) daughter wall part of the mouth treatment: when making cement mortar, the wall and roof junction yin angle to a radius of about 50mm small fillet, the base surface to meet the requirements, first Brush a polyurethane waterproof layer, immediately after the brush is uniform, attach a tire body enhancement layer (glass fiber cloth), and then brush the second polyurethane waterproof layer, with the substrate bonded firmly, but also facilitate the construction of self-adhesive coils.
(2) Yin and Yang corner and pipe mouth part of the treatment: Yin and Yang corner must be made of mortar 50mm fillet, add waterproof additional layer, additional layer with glass fiber cloth one. Pipe port and substation junction, good to find a flat layer, reserved grooves, embedded sealing materials, and then to the pipe around rust removal, lighting, pipe mouth area around the 500mm range of waterproof additional layer, add glass fiber cloth, to ensure that the overall waterproof effect.
5, large area paste roll:
large area paste self-sticking coil material mainly has the pull paving method and rolling paving method two, in the actual construction, construction personnel can according to the site environment, temperature, sun and other conditions, self-determined pasting method, but the basic exhaust, pressing, anti-wrinkle requirements are still the same.
(1) basic requirements: when sticking coils, should always pay attention to align with the baseline, so as to avoid deviation difficult to correct. When the coil is laid, the coil must not be stretched hard. After pasting, then use a pressure roller from the middle of the coil to roll on both sides, drain the air, so that the coil material firmly pasted on the base, the back of the coil to tie the part of the isolation paper should not be removed prematurely, so as not to pollute the bonding layer or mis sticky.
(2) pull-paving method: the coil to the full plan of the baseline spread, from one end of the coil (along with the isolation paper), along the coil length of the middle line folding, with a paper cutter to the edge of the isolation paper gently cut, pay attention not to scratch the coil, the isolation paper from the back of the coil carefully tore apart a small section of about 500mm long, two people jointly remove the isolation paper, aligned with the base line stick positioning. First spread half a long roll in place, pull down the isolated paper evenly pull back, slowly pull out the remaining half a long piece of isolation paper, pull out the integrity of the isolation paper, found that tearing, fracture should immediately stop pulling the paving, the tearing of the isolation paper residue clean up, and then continue to pull the spread.
(3) roll-over method: that is, peeling the isolation paper and paving coils at the same time. Construction does not need to open the whole roll, with a steel pipe inserted into the center of the roll paper core, and then by two people each holding one end of the steel pipe to the beginning of the position to be laid, and the coil will be displayed forward about 500mm, by another person peeled this part of the paper isolation paper, and rolled to the used packaging paper core. Gently lay the striped sheet of paper against the bounced baseline and press it down. After the starting end of the paving is completed, one person slowly peels the paper to get involved in the above-mentioned paper core barrel, and moves forward, carrying the coil of two people at the same time along the baseline roll forward the roll. Note that the two people lifting the coil to move at the same speed, coordination. Rolling can not be too loose, after laying a roll, with a long handle roller brush, starting from the beginning, completely remove the air under the roll, and then use a large roller or handheld light vibrator to crush the coil, paste firmly.
(4) facade and large slope of the paving: due to the self-adhesive coil and the base of the bonding force is relatively low, in the facade or large slope, the coil is prone to decline phenomenon, so in the facade or large slope paste construction, it is appropriate to use handheld gasoline spray lamp to the reel bottom of the adhesive properly heated before pasting, exhausting or roller pressure.
(5) large area of coil exhaust: after pressing, and then use a small hand-held roller to crush the joint area, from the inner edge of the joint to roll outward, drain the air, paste firmly.
(6) seam paste and seal:
seam paste: self-adhesive coil tie at the factory left a tie edge, bonding only need to peel the isolation paper can be, the lifting width is generally 6 to 7cm.
wire tie seal: coil short edge tie, coil head, pipe wrap, special shape parts, should be self-stick rubber asphalt waterproof coil special seal paste seal. The tie-in seal width is not less than 10cm.
6, closing fixed, closed:
coils four weekend end end end head into the groove (depth 20mm× height 40mm to 60mm trapezoidal groove), metal bar nails are solid, sealed with a special sealing paste.
(1) adjacent two rows of coils of short-edge joints should be staggered more than 300mm from each other, so as not to overlap multiple layers of joints and make the coil paste uneven. Waterproof area is very large, must be phased construction, the middle process of temporary head off a lot, should use special sealing paste to do a good job of temporary closure.
(2) coil paste, measures should be taken to temporarily cover, reduce the chance of direct exposure to the coil and damage. The removed silicone isolation paper is back-spread on the coil, and the protective paper can also be retained as an isolation layer between the waterproof layer and the protective layer.
(3) paste, exposed to the sun, may appear slight surface wrinkles, bubbles, which is normal, will not affect its waterproof performance, and once hidden will disappear.
(4) waterproof layer should be hidden as soon as possible, should not be exposed for a long time. The waterproof layer should usually be concealed within 24 hours of completion, and in the case of closed water tests, the hidden time should be calculated from the end of the closed water test.