Our Services

Optimal Seal

The Most Reliable & Efficient Waterproofers

Servicing Sydney & The Greater Region. Between our workers, we have extensive experience and knowledge of all aspects of waterproofing from sheet membranes, torch-on, all liquid systems, remedial works, new works, above & below ground, internal, external, UV stable, reverse tanking and all other aspects of sealing.

Optimal Seal also provides concrete crack injection services. For all our services our motto is ''no job is too big or too small''. We can inject houses, underground carparks, slabs & tunnels. Also we provide services in epoxy systems, covings and other finished floor membrane services.

Sheet Membranes

We offer a range of sheet systems from heat welded applications to torch-on membranes.

External/Rooftops

We offer a range of solutions in all aspects of external waterproofing, new & remedial works for balconies, podium areas, rooftops & any other external needs.

Internal Wet Areas

We provide systems for all your bathroom, laundry & other internal waterproofing needs, along with all relevant warranties.

Crack Injection

We provide all injection services ranging from residential brickwork to underground basements, tunnels, large slabs & buildings.

Flood & Dye Testing

Providing 24 hour flood and dye testing to find and/or confirm leaks and locations (flood testing optional after completed works).

Underground Works

We provide an extensive list of solutions for all below grade & underground works, lift pits, OSD tank, retaining walls and planter boxes.

Get your FREE estimate today!

We can quote within 24 hours & also inspect the site as required.