Waterproofing is intended to keep both moisture and liquid water out of a structure.
Damp proofing would be applied to areas such as beneath the first row of bricks on a built wall as well as subterranean walls and floors, this would normally be in the form of a D.P.C or D.P.M layer see: https://en.wikipedia.org/wiki/Damp_proofing
Waterproofing would be applied to areas that are known to be exposed to water in the form of rain/mist such as roof areas and balconies as well as areas like bathrooms/wet rooms, waterproofing systems are usually a combination of stopping water and water vapour ingress as well as water management such as drainage systems, these systems are typically more expensive than damp proofing , having said that, waterproofing has the advantage of offering both damp proofing and waterproofing in one system.
Typical waterproofing systems are, cementitious, bitumous , liquid membranes (acrylic and polyurethane) amongst others, see: https://en.wikipedia.org/wiki/Waterproofing
“When in doubt waterproof it” (B G Schorn)
Waterproofing costs usually account for less than 1% of the overall construction costs, however, if incorrectly specified and/or applied can cause damage to 90% of the structure and its contents.
It is advisable to use a reputable waterproofing contractor who uses reputable suppliers when looking for a waterproofing or damp proofing solution.
Maxlife Solutions are equipped and experienced to assist in selecting the correct solution to your damp or waterproofing issues.