KoverTek TekPur SP is a single component fast curing polyurethane that forms a consistent bubble free seamless membrane, offering superior UV and weather resistance and can be applied in a single coat to achieve a high tensile, durable finish. Can be used without reinforcement where movement is limited.

TekPur SP should be applied by professional roofers experienced in cold lay wet on wet systems. TekPur can be applied to most substrates as a waterproofing system & for concrete structures, concrete roadways under tarmac layers, carparks, ramps, bridges etc.

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• Features & Benefits
• Substrate Guide
• Surface Preparation
• Application

Features & Benefits

   
• Remains elastic at -40°C and does not soften at high temperatures (80°C+)
• Exceptional toughness with flexural strength
• TekPur SP has a 10 year material guarantee when used in conjunction with TekVeil Reinforcement
• Can be used with or without TekVeil for repairs and overlaying existing surfaces
• Can be used for waterproofing concrete structures, tarmac layers, ramps, bridges & more
• Excellent UV and weather resistance
• Fast skin formation, bubble free
• Cold Applied
• Breathable membrane

Substrate Guide

NB: When applying to any surface a primer must be used prior to application and when applying to Single ply or Plastisol surfaces then TekPrime PVC must be used instead of TekPrime SD (same day primer)

Not suitable for unsound surfaces, swimming pools in contact with chemically treated water or fishponds.

PLEASE NOTE – There are many variations of the surfaces listed as suitable, however care must be taken in testing a small area prior to commencing the main body of work to ensure that a suitable bond is achieved, we do not recommend for use on areas over 200m² in one continuous area. Please contact our Technical Team to discuss larger projects.

Surface Preparation

The area to be treated should be first cleaned with a high-pressure washer or a stiff bristled broom and soapy water to remove grease, oil, wax or any other surface contaminants and loose particles. Any defects in the surface such as cracks, splits and blisters need to be treated prior to application, surfaces that are irregular should be filled with a suitable material. Allow all surfaces to dry before commencing work.

Kovertek TekPrime SD and TekPrime PVC is required before the application of TekPur SP, the type of primer and coverage is dependent on the surface type and porosity. Allow primer to fully dry before application.

Gaps in the substrate/surface above 2mm or subject to movement needs to be filled with a non-silicone product. If applying onto OSB3 boards the joints need to be taped with TekTape Self-Adhesive Butyl Tape; tape should be applied centrally to joints.

Surfaces must be recoated within a maximum 48 hours from the first coat, if this is exceeded another coat of primer must be applied to avoid delamination of the layers.

Application

Mix using a low-speed mixer set to a maximum of 300rpm, mix thoroughly to the base of the container avoiding adding air into the product which can create air bubbles.

Carry out any detailing and perimeter works prior to the application onto the main areas.

TekPur SP can be applied with a suitable short/mid pile roller, brush or squeegee. Apply either one thicker coat at minimum 2kg per m2 or 2 thinner layers at the same application rate. No longer than 48 hours should be taken to apply the second coat, otherwise the TekPrime will need to be used again.