Defects

B

BlisteringSwelling caused by air, water vapour or solvent trapped between the membrane or coating and the substrate.

B

Bridging CrackA membrane that lacks sufficient flexibility stretching and rupturing over a crack or joint.

C

CapillarityThe movement of water through fine pores against gravity.

D

DelaminationSeparation of the membrane from the substrate or of layers from one another.

E

EfflorescenceWhite crystalline salt deposits left on concrete or masonry by evaporating water.

F

Freeze-Thaw DamageCracking and spalling caused by water in concrete or membranes freezing, expanding and thawing.

H

Hydrostatic PressureThe water pressure that groundwater exerts on the waterproofing system.

L

Leak InvestigationIdentifying the source of water entering a building.

O

OsmosisWater being drawn beneath a semi-permeable layer by a difference in concentration on either side.

S

Shrinkage CrackA surface crack caused by concrete shrinking as it dries and cools.