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Tanking Liquid Membrane:   


Duro PU -   For Planter Boxes, Retaining walls and Tanking
 

It is a liquid applied, modified polyurethane elastomeric waterproofing membrane which when fully cured forms a permanently flexible waterproof lining to most building surfaces including reinforced concrete, block work, brick work, cement render, plaster board and fibre-reinforced cement.

 

PRINCIPLE CHARACTERISTICS

 

Single component

Simple application - liquid applied

Excellent elasticity

Seamless - no joint

Low temperature cure

Moisture cure

Coal Tar Free

 

USE AREAS

 

Planter Boxes

Tanking

Retaining Wals

Flashings

 

GENERAL

 

Coverage

1.5 litres /m2 minimum

Shelf Life

6 months

Touch Dry

Approx 12 hours

Recoat

Approx. 24 hours

Thinning

Xylene

Solvent Resistance

Not Resistant

Elongation

600%

Weather Resistance

Should be protected from sunlight

Solids Content

77% by volume (approx)

 

PACKAGING

 

18.9 litres (  US 5 gallon)

 

CLEANUP

 

Before material cures, clean adjacent areas to remove stains or spills and clean tools with Xylene. Do not wash off skin with solvents.  W

 

INSTALLATION

 

Step 1:  SURFACE PREPARATION

 

Ensure surfaces are firmly fixed to manufactures directions. Surface must be free of dirt, dust, loose particles, oil, contaminates, curing compounds and flaking concrete etc. Acid etch if necessary. Concrete must be a minimum strength of 20 mpa and have cured a minimum of 28 days. Surface must be dry. Fill all screw holes, cracks and voids with DuroPU. Install leak control flanges around all pipe

penetrations.

* If concrete Is not fully cured, apply Duro WBE as a primer.

 

Step 2:  PRIMING

 

It is usually self priming when used on most surfaces e.g. Villaboard, sound concrete, block work. However, some surfaces may required priming with Duro PU thinned with 20-50% Xylene or with DuroW BE applied at 6m2/Litre. Damp areas and areas subject to rising damp should be sealed with Duro WBE. Allow primer to dry prior to membrane application.

 

Step 3:

 

DETAILING

Apply a 25mm fillet of Duro PU between all horizontal and horizontal joints and to all horizontal to vertical junctions and around pipe/column penetrations. Around rain water and floor waste outlets, apply membrane to 1.5mm dry film thickness and dress up to penetrations and down into waste outlets. Reinforce if necessary with fibreglass fabric. To joins in sheet flooring, tape and bandage over the mastic-filled joint. Cut out cracks in concrete to 6mm minimum width by 3mm minimum depth and fill with Duro PU.

 

Step 4:

 

APPLICATION
 

To the prepared surface, apply Dur PU by brush, roller or trowel in one or more coats to achieve a minimum dry film thickness of 1.2mm and 1.5mm externally. Turn membrane up at walls and penetrations and down into drainage outlets. When dry, check for pinholes or misses and rectify if necessary. If membrane becomes dirty between coats, clean with Xylene to ensure adhesion. Allow 24 hours to dry before covering.

 

PRECAUTIONS

 

Do not apply above 42 C or below 8 C ambient temperature. Do not cover until fully dry. Protect membrane against damage before and during backfilling or covering. Wrimco protection board may be used where suitable. Dur PU should always be protected from UV exposure by covering with tiles, sand-cement topping or soil etc. Protect membrane against the action of roots.

 

WARNINGS AND HAZARDS

 

Combustible liquid and vapour. Keep away from heat and flame. Use only with adequate ventilation. Avoid contact with the eyes or skin, especially open breaks in the skin. In the event of skin contact, remove excess product and wash with warm soapy water. Refer to MSDS for important warnings and product information.

 

Waterproofing FAQ

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