Wrimco Waterproofing                              Home  | Specification | Product | Project | Technical data A-Z | Contact us

Adhesive Membrane

Anti-root Membrane

Approved Applicators

Backing Rod

Drainage Cell

Drainage Sheet

Epoxy Adhesive

Epoxy Flooring

Flat Roof Membrane  

Foundation Membrane

Liquid Membrane

Membrane Protection

Product Application

Product Category

Retaining Wall

SBS Sheet Membrane

Torch on Membrane

Under Slab Membrane

Vapour Barriers

Waterproofing Primer


Waterproof Balcony Liquid Membrane Waterproof Bathroom liquid membrane Waterproof Retaining Wall Liquid Rubber Membrane How to waterproof a bathroom Waterproof Internal Wet Area Membrane Waterproof Tiled Balcony Clear Penetrating Sealer Trafficable liquid membrane UV Protection Polyurethane Membrane Waterproof Water Feature liquid membrane Hydro Pressure Resistant liquid membrane Waterproof fish pond liquid membrane waterproof bathroom liquid membrane Waterproof above screed liquid membrane UV Resistant Polyurethane Membrane Waterproof leaking balcony liquid membrane waterproof damp basement wall liquid membrane Solutions to common waterproofing problems Maxseal Foundation Polyurethane Membrane MasterSeal M210TIX Latex Rubber Liquid Membrane Waterproof wet basement wall liquid membrane Injection Drill Pump Vulkem 350/345/346 Ardex WPM 300 Epoxy - Stop Rising Damp Waterproof Metal Roof Liquid Membrane Repair Leaking Balcony, Flat Roof, Planter Box, Bathroom Waterproofer, waterproof Leaking Balcony, Flat Roof, Planter Box, Bathroom tradesman, handyman Waterproof Box gutter liquid membrane Waterproof Retaining Wall liquid membrane Waterproof Internal, External Wall Liquid Membrane Waterproof Concrete Slab Liquid Membrane Waterproof Balcony Liquid Membrane Stop Leaking Shower Liquid Membrane How to waterproof a retaining wall How to waterproof a Retaining Wall How to fix leaking fish pond Waterproof Garage Roof Liquid Rubber Membrane Waterproof water tanks for drinkable water Waterproof Leaking Roof, Gutters, Balcony, Car Park tradesman Waterproof leaking box gutters tradesman Repair Leaking Balcony, Flat Roof, Planter Box, Bathroom Waterproofer   Repair Leaking Balcony, Flat Roof, Planter Box, Bathroom Waterproofer   HiBuild Hydrastatic Water based Epoxy Hydrostatic Negative Pressure Water Based Epoxy Under tile screed bed waterproofing membrane Prevent and Fix Rising Damp Waterproofing Epoxy Waterproof exposed balcony liquid membrane Repair leaking balcony waterproof liquid membrane Waterproof Bathroom Liquid Membrane Planter Box Retaining Wall Tanking Liquid Membrane Waterproof Leaking Metal Roof Waterproofer HOw to repair leaking fish pond Waterproof Underground wall Liquid Membrane Waterproof Planter Box liquid membrane Waterproof Watertanks Cementitious Liquid Membrane Waterproof Lift Pit Liquid Membrane ARDEX WPM 001 - Undertile Waterproofing Membrane Waterproof Planter Box Root Resistant Liquid Membrane Repair Bitumen Roof Waterproofing Liquid Membrane UV Protective Polyurethane Membrane Waterproof External Brick Wall liquid membrane Waterproof Retaining Wall Liquid Membrane Waterproof Planter Box Liquid Membrane Waterproof Wet Retaining Wall Liquid Membrane Waterproof Leaking External Wall Licensed Waterproofer Emer Clad Acrylic Liquid Membrane Waterproof Planter Box, Retaining wall liquid membrane Fast Cure Elastomeric Waterproofing Membrane Systems Waterproof Leaking Swimming pool tradesman UV Resistant Acrylic Liquid Membrane How to Waterproof a Leaking Metal Box Gutter Sikalastic 560 - Repair Bitumen membrane Roof Waterproof Lift Pits Tradesmen Waterproof Leaking Kitchen Tradesmen Waterproof Leaking Internal Basement Walls tradesman Waterproof Leaking Laundry tradesman Waterproof Leaking Deck, Verandah Tradesman Waterproof Leaking Roof, Gutters, Balcony, Car Park Tradesman, waterproofer, license waterproofer Repair Bitumen Roof Liquid Rubber Membrane Waterproof Besser Block Wall with Liquid Membrane Waterproof leaking bitumen roof contractors Waterproof leaking bitumen roof contractors  Waterproof Leaking Retaining Wall, Basement Wall Tradesmen Waterproof Leaking Ceiling Waterproofer Repair leaking Water Tank licensed Waterproofer Repair Leaking Fire Water Tank Licensed Contractors  Waterproof Leaking Fire Water Storage Tanks Waterproofer Waterproofing Leaking Basement Licensed Water proofer Waterproof Leaking Plant Room, Machine Room Contractors Sikalastic 488 UV Trafficable Polyurethane Liquid Membrane
Commercial Building Sheet Membrane Concrete Roof Sheet Membrane Waterproof Deck Sheet Membrane Entertainment building Waterproofing Membrane Waterproof Government Building Sheet Membrane Waterproof Hospital Building Sheet Membrane Waterproof Landmark Building Bitumen Membrane Waterproofing Planter Box Sheet Membrane Waterproof Plywood Roof Sheet Membrane Waterproof Residential Building Sheet Membrane Waterproof Roof Bitumen Sheet Membrane Waterproof Flat Roof Sheet Membrane Waterproof Retaining Wall Sheet Membrane Terrace waterproofing Sheet Membrane Waterproof University Building Sheet Membrane Wrimco Reference Waterproof Lift Pit Sheet Membrane Waterproof Concrete Roof Sheet Membrane Tanking Sheet Membrane Systems Vaucluse Waterproofing Project  Mosman Waterproofing Project Waterproofing Palm Beach Waterproofing Dover Height Waterproofing Darling Point Waterproofing Bellevue Hill waterproofing tradesman Knowledge Base FAQ Waterproofing Product Waterproof Leaking Garage Roof tradesman Repair SBS, APP Sheet Membrane Waterproof Concrete Slab Sheet Membrane Waterproof Leaking Garage Roof Liquid Rubber Membrane Waterproof Leaking Metal Roof Liquid Rubber Membrane Waterproof Balustrade Sheet Membrane Waterproof Commercial Building Project Bitumen Sheet Membrane Closed Cell Backing Rod Repair Crack Joints Closed cell backer rod Expansion joint backing rod Backing Rod Waterproof Leaking Roof, Balcony, Box Gutter tradesman Repair Leaking underground basement wall Waterproofer Waterproof Leaking Shower, Bathroom, Wet area Tradesman Repair Leaking Deck, Planter Box Waterproofer Waterproof Leaking Fish Pond Tradesman Waterproof Rising Damp Basement Tradesmen Roofs Waterproofed with Wrimco Sheet Membrane Waterproof Retaining walls with sheet membrane Waterproof Balcony with Sheet Membrane HDPE Self Adhesive Sheet Membrane Waterproof Commercial High Rise Building Roof Contractors Waterproof Car Park Roof with sheet membrane Ardex WPM 116 Sheet Membrane Ardex WPM 150 APP Sheet Membrane ARDEX WPM 188 SBS Garden Tanking Membrane ARDEX WPM 185 APP Sheet Membrane Ardex WPM320 Waterproof Retaining Wall Liquid Membrane Waterproof Deck with torch applied Sheet Membrane ARDEX WPM612 FL TPO Fleece-Backed Roof Membrane TREMproof SBS 4000M Mineral Bituminous Membrane ARDEX WPM 1000 Weldable Waterproofing Membrane SBS Sheet Membrane Installation ARDEX WPM 3000X Self Adhesive Sheet membrane ARDEX WPM 750 Undertile Butynol  Waterproof Concrete Slab with Sheet Membrane ARDEX WPM 444 APP Sheet Membrane How to waterproof a Retaining wall How to waterproof a Planter Box How to waterproof a planter box How to waterproof Tiled Balcony with clear sealer How to waterproof a Shower  Ardex SRO 834 Waterproofing Specification Wrimco Sheet Membrane Waterproof elevator pits Sheet Membrane SBS Sheet Waterproofing Membrane How to waterproof balcony with sheet membrane Anti Root Sheet Membrane Vehicular Traffic Liquid Membrane Waterproof Planter Box with torch applied sheet membrane Waterproof Balconies Decks Podiums Prevent Rising Damp Hydro Static Epoxy How to waterproof a planter box  20 Years Warranty 2 Layers Sheet Membrane System for Exposed Roof 20 Years Warranty Sheet Waterproofing Membrane System

Solutions to common waterproofing problems:


Where is the water coming from?


Whatever your problem, the main thing is to determine the source of the water. This is often very difficult but you may be able to at least isolate the suspect area by judicious water testing. Such tests are essentially static and it is difficult to simulate conditions such as wind driven rain which may be the cause.


Each of the following areas are discussed at length below:

1. Bathrooms;

2. Tiled Decks and Balconies;

3. Retaining walls

4. Roofs


1. Bathrooms


If your problem is dampness at the doorway, the most likely cause is that the tiles slope outwards to the door rather than inwards to the drain. Fitting seals to the bottom of the shower door may solve the problem without having to re-lay the tiles.


Another possibility is water filtering through the grout between the tiles and into the mortar bed and travelling to the doorway. There should be an angle set in to the membrane that prevents it going any further but if the edge is not sealed properly, then you will see that the mortar becomes damp after the shower is run for 10-15 minutes.


If this proves to be the case, then you can either:

Seal the floor with Wrimco WB Primer; or

Seal the mortar at the doorway with Wrimco Epoxy Primer.


More serious is when water is causing damage in the floor below, as this most likely indicates a failure in the membrane.


There is, however, the possibility that there is a leaky tap causing water to bypass the membrane system. This can be checked by monitoring after turning off the water main, and when everything is bone dry, turn it back on. If still dry, turn the shower on and if it then becomes damp, it must be the membrane system.


Try sealing the floor with Wrimco WB Primer after first caulking the perimeters with an anti-fungus silicone. A more permanent solution is to take up the tiles and mortar and start afresh, following the NATSPEC Specification for Interior Waterproofing.   



2. Tiled Decks and Balconies


The first thing is to try and establish whether the membrane system has failed or whether it is being bypassed. Perhaps a flashing has been missed or the cavity in the brickwork has become blocked or bridged.


Once everything is dry, try blocking the drain and flooding the area. If it then leaks, then the membrane is highly suspect. It is however possible that water is still bypassing because the membrane was applied to a rendered surface and not the structural elements, which is what should happen,and was not applied high enough on the wall. This can be checked by first sealing the perimeter with Wrimco ealant and brushing Wrimco/Duroseal AR say 50mm up the wall and re-testing.


If this suggests that it definitely is the membrane, then the best solution is to remove the tiles and re-waterproof. This is of course expensive and may create a disposal problem. You should therefore first try caulking the perimeter and then coating the entire area with Wrimco/Duroseal AR.


If you decide to re-waterproof, it is best to remove the old membrane as much as possible. Since Kanga hammers are normally used, the pock marks in the slab will need to be filled to make a level surface with Wrimco self levelling compound. If the wall is rendered, remove say 75mm from above the slab in order to bring the new membrane onto the structural wall and at least 25mm above the height of the tiles.


Since it is often difficult to remove 100% of the old membrane, it will be safest to use a water based membrane such as Wrimco Duroflex P15 or Wrimco Azcothane REO as the solvent in solvent based urethane is likely to interact and cause blisters and bubbling. Best of all would be an Wrimco SBS sheet membrane which is ideal for such remedial work.


3. Retaining walls


When dampness appears on the inside of a retaining wall, water testing to help locate the source is impossible while excavating is often not an option. Normal waterproofing materials will seldom work when there is water pressure in the wall since it causes them to lose adhesion.


If the wall is less than 2-3 months old, then Wrimco Foundation   is an excellent solution.


If the wall is quite old, it is likely to be saturated with salts in which case the Mapelastic Smart, Sikalastic 1K or Cystoflex are preferred.


If the wall is rendered, it is best to remove the render, apply the Mapelastic Smart or Crystoflex and re-render. Otherwise there is a risk that the render will lose adhesion to the structural elements of the building because the water is then trapped within the render.


An alternative system that may be used is a water based epoxy such as Epoxy Primeseal or Hibuild WBE.


4. Roofs


If the membrane roof is loose laid or semi-loose laid, water can track between the membrane and the slab so it makes it virtually impossible to determine the source of the leak. It could well be that the water is bypassing the membrane system so the first thing to do is to carry out a very careful inspection of all constructions above the roof and particularly the flashings.


Water testing could be carried out after a period of dry weather and when there is no dampness beneath. If this proves positive, then it is most likely that the membrane should be replaced. It must be remembered, however, that static water testing does not simulate the dynamic conditions of wind driven rain which may well cause water to bypass the membrane system.


It is not a good idea to simply cover the existing membrane with a much better one such as torch applied elastomeric Wrimco SBS Granules. It is always best to remove the old membrane so you can benefit from a fully bonded system that will not allow water to track.


Naturally there are exceptions to every rule and for difficult to remove materials such as acrylic, it is sufficient to remove the blisters and torch over with Wrimco SBS Granules, assuming that it is exposed.


If there are pavers on "Polypad" supports, then the Wrimco SBS Granules should be used for fire protection. If there is insulating foam and pebbles, then Wrimco SBS plain is sufficient.


Leaks around drains are frequently the cause of problems as are blocked drains that allow water to bank up and go over the membrane upstand. Naturally you should look for any work that may have been carried out such as fitting TV aerials, securing heater coils or installing air conditioning units. 



Waterproofing FAQ

Membrane Protection Board

Waterproofing Coating

Waterproof Drainage Sheet

Waterproofing Primer

Repair and Maintenance