For over seventy years, Thoro System Waterproofing., a wholesale/retail provider of waterproofing and restoration materials for concrete and masonry, has been serving dealers, contractors and D-I-Y's in Eastern PA, South Jersey and Delaware. Starting in a one-car garage in Drexel Hill PA in 1936 and moving from there to Springfield in 1947, Thoro System speedily earned the trust and following of dealers, contractors and homeowners alike.

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Learn About The Thoro Name Changes Report

Thoro concrete and waterproofing products now a part of Master Builders Solutions The full range of product solutions will now appear in the market under the global Master Builders Solutions brand names. The Master Builders Solutions brand is respected and specified by construction professionals around the world.

Paul Steiner

Nov 20, 2021

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Wayne Pfaff, owner of Thoro Systems was a pure example of a business man with a heart, and compassion for people.

John Fecile

Apr 24, 2019

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Thoro System will come through for you. We needed material for a job on short notice. They made the extra effort to meet us on Saturday to complete the delivery. I will use them again, and again, and again.

Bret Lafty BretL

Jun 14, 2018

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The best location for all you specialty masonry applications. Also a friendly staff