Industries

New Construction Waterproofing Sydney

Waterproofing packages for builders, developers and new residential and commercial construction.

Waterproofing membrane being applied during construction of a new building

On a new build, waterproofing sits between other trades and has to be delivered on time, in the right sequence and to the right detail — because everything that follows covers it up. Diamond Seal Waterproofing works with builders, developers and construction companies across Sydney on waterproofing for new residential and commercial projects.

Getting waterproofing right during construction is far cheaper than defect rectification after handover. Once tiles, screed, landscaping or backfill are in place, correcting a membrane means undoing completed work — and dealing with the client relationship that comes with it.

Waterproofing during the construction process

Waterproofing on a new build is a sequencing problem as much as a technical one. Substrates need to be complete and dry enough, penetrations need to be in place before the membrane goes down, curing time has to fit the program, and the membrane needs protecting from following trades.

When those constraints are planned into the program rather than discovered on site, the work goes in cleanly and the trades behind it are not held up.

What new construction waterproofing involves

Program coordination

Scheduling waterproofing around screeding, plumbing rough-in, tiling and other trades so the sequence works.

Pre-application checks

Confirming substrates, penetrations, falls and set-downs are ready before any membrane is applied.

Substrate preparation and priming

Preparing and priming so the membrane bonds correctly to the specific substrate on site.

Detailing

Bond breakers, reinforcement and detailing at junctions, penetrations, upstands and thresholds.

Membrane application

Applying wet area, external and below-ground systems as required across the project.

Curing and protection

Allowing correct cure and advising on protection so following trades do not damage the membrane.

New construction scope

  • New home and townhouse wet areas
  • Bathrooms, ensuites and laundries
  • Balconies, terraces and decks
  • Flat roofs and roof terraces
  • Basements, lift pits and retaining structures
  • Podium decks and planters
  • Duplex and multi-dwelling developments
  • Commercial new build waterproofing packages

Benefits

Fits the construction program

Waterproofing scheduled and delivered around the trades either side of it.

Reduces defect risk

Correct preparation and detailing during construction reduces callbacks after handover.

Full project coverage

Wet areas, external areas and below-ground waterproofing handled by one contractor.

Straightforward to deal with

Direct communication with site supervisors and project managers.

Common new build waterproofing issues

If any of these sound familiar, it is worth having the area assessed before the damage spreads further.

  • Membrane applied before substrates were ready
  • Insufficient curing time before tiling
  • Damage caused by following trades
  • Missed detailing at penetrations and junctions
  • Set-downs and falls not correctly formed
  • Balcony thresholds without adequate upstand
  • Below-ground membranes damaged during backfill
  • Defects appearing shortly after handover

Why choose Diamond Seal Waterproofing

  • Understands construction sequencing and site pressure
  • Preparation and detailing done before the membrane goes on
  • Wet area, external and below-ground capability
  • Works with builders, developers and site supervisors
  • Clear communication on timing and readiness
  • Focus on reducing post-handover defects

Frequently asked questions

Have a question that isn't covered here? Call 0452 528 532 and we'll talk it through.

Need Waterproofing in Sydney?

Talk to Diamond Seal Waterproofing about your residential, commercial or construction waterproofing requirements.

Call Diamond Seal — 0452 528 532