SHANDONG WEIFANG poly damp proof course/DPC for waterproof
thickness, 450um- 750um
width, 50mm-1500mm length, 30m-100m
SHANDONG WEIFANG poly damp proof course/DPC for waterproof
Introduction
Damp proofing in construction is a type of waterproofing applied to building foundation walls to prevent moisture from passing through the walls into interior spaces.
A damp-proof course (often abbreviated to DPC) is a horizontal barrier in a wall designed to resist moisture rising through the structure by capillary action - a phenomenon known as rising damp.
In simpler words, DPC is used to stop dampness in buildings. In theory, due to capillary movement of water, water rises from earth to the building. Passing through foundation it rises higher to reach walls. Reaching water to walls may damage them by creating cracks, breaking cement-paint bonds and creating dark-spots on wall etc. So, to avoid water from reaching to walls, we lay DPC layer at plinth level (the joint level of walls and foundations). DPC layer is usually laid below all the walls unaffected from the issue that the respective wall is a load bearing wall or a partition wall.
Specification
Thickness: 450-1200um
Size/roll: Width: 5-150m; Length: 30-100m
Physical Property of 500um DPC
No.
Item
Physical Property
1
Weight g/m2
450
2
Tension N/cm
Longitudinal ≥
300
Transverse ≥
250
3
Fracture elongation %
Longitudinal ≥
200
Transverse ≥
100
4
Break tension N ≥
20
5
Water impermeability 30min no leaking
0.3Mpa no leaking
6
Cold bending -20°C
No crack
Applications
Used in the building industry to avoid moisture. It provides a complete and permanent moisture barrier in the protection against water damage to buildings through the walls and brickwork. Used around brick vents, timber framing, windows and door flashings.
