poly dampcourse
Product Description
THICKNESS 350UM-1000UM
WIDTH 90mm-1500mm
LENGTH 30m-100m
A damp proof course ( DPC ) is a physical barrier inserted into the fabric of a building to stop water passing from one place to another. This can be on a horizontal plane, stopping water rising up from the ground by being sucked up by the dry masonry above, or vertically to stop water passing from the outside of a building, though the masonry, to the inside. DPC's have taken many forms through the ages and one of the earliest forms was to use a layer of slate in the construction. Slate is still used but the less expensive plastic version ( below right ) is now more widely used.
Technical Specification of DPC
|
Water Vapour Permeability |
0.28 gm2 day-1 |
BS3177 |
|
Water Vapour Transmission |
733 MNsg-1 |
|
|
Water Absorption |
0.22% |
BS2782 : 430A |
|
Resistance to Leakage at Joints |
PASS |
MOAT 27 : 5.2.1 |
|
Tensile Strength of Joint |
UNAGED : 300 N
|
MOAT 27 : 5.2.2/3/4 |
|
Cold Flex Temperature |
−60°C |
BS2782 : 320A |
|
Tensile Strength |
L : 12.9 Nmm-2
|
BS2782 : 320A |
|
Elongation at Break |
L : 415%
|
BS2782 : 320A |
|
Tear Strength |
L : 122 Nmm-1
|
BBA Method |
|
Low Temperature Flexibility |
L : <−25
|
MOAT 27 : 5.4.2 |
|
Dimensional Stability |
L : −2.0%
|
MOAT 27 : 5.1.6 |
|
Mortar Adhesion Test |
PASS |
Cream Method |
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