William S. Simpson Co., Inc.
107 Eastman Street
South Easton, MA 02375
United States
ph: (508) 230-0900
fax: (508) 230-7069
jim
William S. Simpson through it's many affiliations has been a leader in distribution of chemical and mechanical water resistant and waterproofing systems. As technology changes WSS tries to maintain and advance in our product lines and systems available.


A damp-proof barrier for block and concrete foundations, or as a wood saturant.

One of the most difficult decisions you can be faced with is trying to compare products as “true” alternatives to each other. Thankfully, testing procedures allow you the ability to compare physical properties side by side. W. R. MEADOWS, the originator of below-slab vapor protection, is concerned that confusing information is being provided to you, the specifier. If you design it, you own it, so you need to trust the companies you’re dealing with. |
THERMADRAIN SYSTEM...

It's our most precious natural resource. It's also the most damaging. When water finds its way into a masonry wall cavity, it wreaks havoc - causing rot, decay, mold, and cracking.
That's why you need to utilize quality flashings, drainage devices, and masonry accessories.
Air & Water-Resistive Barriers
A fluid applied air and water-resistive barrier that stops air and water leakage through cavity wall, masonry veneer construction
William S. Simpson Co., Inc.
107 Eastman Street
South Easton, MA 02375
United States
ph: (508) 230-0900
fax: (508) 230-7069
jim