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Manufacturing cement window frames since 2008

  • 011 609 9351/2 info@bloktrading.com
  • 078 803 5219 WhatsApp Us
  • 133 Terrace Road, Sebenza, Edenvale Johannesburg
  • Mon - Thu 7.30 - 16.00 Fri - 07.30-14.00
About Us

About Us

About Us

Welcome to Blok Trading™

We manufacture cement window frames and surrounds.

Blok Trading™ operated as a franchise of Wintec Innovation for many years of which Paul Mofokeng and Clive had been involved in the supply and manufacturing of the Winblok Total Window System for approximately 30 years but now operate independently under our own trademark empowering communities throughout South Africa.

We are proudly a South African business producing a handmade Blok Window System and have 60 years of combined experience in the precast concrete industry including having worked closely with the Lupini brothers from Lupini Cement Works.

Furthermore, we manufacture a variety of handmade concrete and precast window frames, pavers, paving slabs, concrete blocks, garden pots and furniture including various specialized products.

Our products are durable and strong ensuring the best quality as well as maintenance free and withstand extreme weather conditions.

Blok Trading™ has vast experience in both old and new ideas of great benefit to the public, architects, builders, contractors, engineers and landscapers of which all manufacturing is done under management, supervision and that of master tradesmen.

*WE NOW OFFER*: Steel & Aluminium Windows. The combination of Admiro Mazive, who was a product of Prospen Structure along with Tutu Sihlangu who came from PMI, contribute a vital role in manufacturing of steel & aluminium windows. Bloktrading is moving forward to promote upcoming Designers, in order to move South Africa forward.


Customer Service

Friendly and Professional Advice.


Quality Products

90 years experience.


Innovative Tech

We constantly develop new products.


Construction Creativity

Talk to us about your building projects needs.

Concrete Window Frames

Projects and Photos