PVC Basement Waterproofing Membrane

PVC Basement Waterproofing Membrane

PVC Basement Waterproofing Membrane( non-exposed  type) is made from polyvinyl chloride resin as main material, blended in defoamer,  aging resistant agent and ultraviolet absorber, processed by using advanced  equipment and technics. Sometimes added fiberglass and polyester non-woven as  backing to enhance product performance.

Type & Item NO.
  
      

Membrane  reinforced by embedded fiber mesh. This is usually
 applied to single-ply waterproof system for roof by welding and
 mechanical fastening. ( Item NO. DYP-813)

 
 Homogeneous membrane.  This is usually applied to metal roof,
 general basic construction.( Item NO, DYP-814)

Membrane reinforced by non-woven fabric  backing. This is usually applied 

 to concrete roof by welding and adhesion.( Item NO, DYP-815)

Application scope
 1)Civil  and Industrial building basements and roof waterproof engineering, roofing  engineering including planting roof, flat roof, sloping roof, concrete roof,  light steel structure roof as well as both interior & exterior roof.
 2)Road,subway  rail tunnels, bridges, civil air defense engineering, etc.
 3)Large  grain depot, beam field, landfill, artificial lake, pipe trenches &  municipal engineering of waterproof, etc.
  

Product Features
 1)The product is plant-root puncture  resistant, long service life, high tensile strength & elongation, can  effectively resist the destruction of the waterproof layer due to structure  deformation.

1. Aging resistance performance is superior, dimension variance rate  to heat is low, wind uplift resistance is excellent, suitable for exposed roof  system.

2. Resistance to chemical corrosion & mildew, especially  applicable to tunnel waterproofing and planting roof waterproof engineering.

4)Good low temperature flexibility, flame  retardant, self-extinguishing once deviated from fire,   
 High construction  safety.

1. Bond well with substrate on hot gas welding, easy construction,reliable  seam welding, and no environmental pollution.

Construction Guidelines
 1.Substrate treatment – 2.Snap  lines for alignment – 3.Paving waterproof membrane – ?Paint adhesive – ?Rolling to exhaust  gas - ?Hot gas welding waterproof membrane

1). Substrate Requirement
 a) Substrate should be clean and without  sharp points.
 b) Substrate surface should be dry and  substrate water content should be under 9%.
 c) Corners and area with embedded part  should be rounded off with radius bigger than 20mm.

2). Construction details
 a) Substrate cleaning and smoothening.
 b) Snap lines onto substrate surface as  reference lines.
 d) Unfold the PVC membrane roll, lay the PVC  membrane onto a clean substrate surface, keep the membrane in a natural unfolded,  straight and smooth state without distortion. Then lift up one end of the  membrane and fold it to the other end. Fully apply adhesive to the substrate  surface and to the membrane surface except for a 100mm wide area at the edges,  which is for welding purpose. Adhesive should be applied evenly with no blank  area. And leave it for 5-10mins under normal temperature when the adhesive  becomes surface dry (not sticky to fingers), then it is ready for bonding.

e) When paving PVC membrane at place where a  vertical surface joints a level surface, pave the membrane from bottom up,  leave the seams on level surface. Keep membrane joint seams at least 200mm away  from corners, membrane's short edge joint seams should be 500mm staggered and  membrane's  edge overlapping width should  be no less than 80mm.

f) Air exhausting and roll: after paving  each PVC membrane sheet, use a roller to roll the membrane sheet from one end  to the other to exhaust air completely and ensure tight bonding.

g) Joint seam treatment: after large area  membrane paving, lift up the uncoated 100mm membrane edge, turn it over and  wash it with solvent, after the solvent dry out, apply seam sealant to the  overlapping area of the two membrane sheets, wait 10mins for the sealant  surface to dry, then bond the two membrane sheets together from one end to the  other, press down and exhaust air by hands. No buckling or bubble is allowed to  exist in overlapping area.

h)Membrane terminals in the grooves area or  drain gully area should be sealed up by cement mortar.

Product  Specification

Executive standard  & Performance index 

Storage

1. Different types and specifications of the products should be  stacked respectively. Pay attention to ventilation.Storage temperature should not  be higher than 45?, flat storage stack height no more than five layer, put single pile  vertical, keep product away from acid, alkali, oil, organic solvent, etc.

 2)Transportation  to prevent tilt or lateral pressure, cover with cloth if necessary.
 3)Under  the condition of normal storage & transportation, storage period is one  year.