dampcourse - DPC

damp proof courses:Waterproof, dampproof, ageing-resistant, leakproof 2) No flowing at highest temperature and no crack at - details see: https://www.buildingsupplieshub.com/dampcourse-10100709

Type: Other Waterproofing Materials	Place of Origin: Shandong China (Mainland)	Brand Name: GW	Model Number: DPC
THICKNESS: 450UM--750UM _1200GAUGE---2000GAUGE	LENGTH :: 30M-100M	WIDTH:: 50MM---1500MM

1.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.

2.Usage:

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.

3.DPC:

Insimpler 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.

4.Specification

Thickness: 450-1200um

Size/roll: Width: 5-150m; Length: 30-100m

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

1) Waterproof, dampproof, ageing-resistant, leakproof
2) No flowing at highest temperature and no crack at

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 HEAT AGED : 290 N WATER SOAK : 257 N	MOAT 27 : 5.2.2/3/4
Cold Flex Temperature	−60°C	BS2782 : 320A
Tensile Strength	L : 12.9 Nmm-2 T : 11.2 Nmm-2	BS2782 : 320A
Elongation at Break	L : 415% T : 582%	BS2782 : 320A
Tear Strength	L : 122 Nmm-1 T : 96 Nmm-1	BBA Method
Low Temperature Flexibility	L : <−25 T : <−25	MOAT 27 : 5.4.2
Dimensional Stability	L : −2.0% T : −0.3%	MOAT 27 : 5.1.6
Mortar Adhesion Test	PASS	Cream Method