Waterproofing Commercial Buildings

Waterproofing Commercial Buildings

Waterproofing commercial buildings is an absolute MUST. Waterproofing products have evolved tremendously in the last 30 years so the first thing to understand is the structure of a conventional corporate building, and which parts are most vulnerable to water damage:

  • Ponds & Fountains
  • Roofs, And Especially Flat Roofs Without Adequate Drainage Solutions
  • Balconies And Terraces
  • Water Tanks
  • Expansion Joints
  • Basements
  • Retaining Walls
  • Planter Boxes
  • Lift Pits
  • Cellars

When you are conducting a check, your focus should be on these areas. That does not mean you should neglect the rest of the building areas.

Why Does Your Commercial Building Need To Be Absolutely Waterproof?

  • Prevent loss of rent.
  • Prevent damage of property – the last thing you want as a building owner is to have your property uninhabitable.
  • Cockroaches, rats, and other pests are attracted to damp areas, which not only poses a major health risk for the occupants but also an ongoing cost for the owner, who must bring in exterminators.
  • The safety of your staff – As the building owner, you would be held liable for any damages or injuries incurred by your tenants or employees.
    • Mould and mildew can cause allergic reactions and respiratory problems
    • If wiring is exposed to water due to insufficient waterproofing, a fire may break out or electrocution could occur.
    • Sagging ceilings and unsteady balconies can cause collapse and therefore major injuries may occur.
  • For structural reasons.
  • For hygiene reasons.

Preventative Checks

Regular, comprehensive check ups are absolute key for preventing a small leak or break from becoming a health hazard. As part of your regular workplace safety list, you should thoroughly check the entire building premises and fault points for any water ingress problems or any safety cautions.

Try to do a simple check biannually or whenever you feel that you haven’t for a while. Do a thorough check once per year at absolute minimum.

Being able to tell where water is seeping during heavy rains can be the only time certain cracks may manifest. Even during some lighter precipitation, there may not be enough water build up for areas to flood or to let in enough water through a small crack.

It’s a lot cheaper to fix an issue that hasn’t formed yet, and even more so when it comes to waterproofing. Some forms of waterproofing can be installed directly over pre-existing waterproofing. However, in extreme cases, you’ll be looking at cracks, structural damage, and other factors which may prevent a ‘quick fix’.

For more information on commercial waterproofing, get in contact with us and we will assist you where we can.

My Damaged Ceiling. Your Leaking Balcony.

Problems arise very often when a balcony’s waterproofing is damaged or deteriorates. Thus, causing water ingress problems into the apartment or dwelling below. The question is, who pays?

If you live in a complex run by a body corporate, the waterproofing is installed to protect the property underneath. Not to benefit the balcony. Often the problems caused by water ingress issues from a balcony are through no fault of either owner. However, it is often a result of poor  workmanship by the developer or building contractor trying to reduce costs at the time of construction.

Defective waterproofing can cause water to seep through screed and slab within the balcony floor, and into the unit below. Causing damage to the ceiling, plaster, paint work and encouraging mould growth.


Fixing the leaking balcony includes lifting all the tiles on the balcony floor and walls (if there is a skirting tile). Then, removing the old waterproofing and installing a new waterproofing system. Another consideration to keep in mind is the type of slab that the balcony is cast from(Cast-in-situ or block & rib slab). Certain waterproofing systems cannot be used on the block & rib slab system. Afterwards, reinstalling new tiles and grouting.

But all of that costs money. So, who pays?

Well, unless you have made an agreement with the “owner” of the balcony deck that is leaking. The cost is evenly shared between the 2 units.

For more professional, free advice please feel free to contact us.

Home Ready For Storm Season

Get Your Home Ready For Storm Season!

Get Your Home Ready For Storm Season. Storm season is around the corner, so making your home storm safe should be a high priority. Thunderstorms, hail, floods and damaging winds cause major damage every year so start spending some time getting your home fully prepared.

Things to do include:

  • Cleaning out drains, gutters and downpipes. If water backs up, it can enter your home in a number of ways and cause major damage from your roof top to your interior walls and floors.
  • Prune overhanging tree branches that could be dislodged during a storm, particularly near your home and vehicles.
  • Get your roof flood checked NOW so that if there are any leaks, you can attend to them before you experience the major flooding when a real storm hits. Here at Apex Waterproofing, we do offer free flood checks.
  • Roof tiles. Loose roof tiles are blown off roof tops causing water to enter the open roof and leaving a trail of damage to windows, cars and causing injury to people standing outside. To prevent this, call us to assess your roof tiles free of charge.
  • Check your window sills. Window sills are often not considered when a leak occurs but this is a big mistake. Ensure your window sill seals and joints are not damaged or loose.

For more information, please feel free to contact us and we will happily assist you with any questions or queries you may have.