Master Builders

MasterSeal 581 - formerly Thoroseal

$65.03 - $65.03
Sprayable
Availability:
In Stock
SKU:
MasterSeal 581 multiple
Waterproof cement-based coating for concrete and masonry
Can be used on vertical interior or exterior surfaces
Certified to the NSF/ANSI Standard 61 for potable water contact
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Documentation

The Chas E. Phipps Tech / SDS Documents system is a search service to product information for the Concrete, Finishes, Masonry and Thermal and Moisture Protection Divisions. All documents are in pdf format and have been compiled from manufacturer websites.

TERMS AND DISCLAIMER: ANY MATERIAL ACCESSED, DOWNLOADED OR OTHERWISE OBTAINED THROUGH THIS SYSTEM IS DONE SO AT THE USER’S DISCRETION AND SOLE RISK. THE CHAS E. PHIPPS COMPANY DOES NOT GUARANTEE THE COMPLETENESS, ACCURACY, QUALITY OR CONTENT OF ANY OF THE DOCUMENTS ACCESSED, DOWNLOADED OR OTHERWISE OBTAINED THROUGH THE SYSTEM, WHICH DOCUMENTS MAY BE AMENDED, CORRECTED OR SUPERSEDED FROM TIME-TO-TIME BY THE MANUFACTURER. USERS ARE CAUTIONED TO ALWAYS CONSULT THE ORIGINAL MANUFACTURER DOCUMENTS. USERS AGREE THAT UNDER NO CIRCUMSTANCE SHALL THE CHAS E. PHIPPS COMPANY BE LIABLE IN ANY WAY FOR (1) THE CONTENT OF ANY DOCUMENTS, INCLUDING BUT NOT LIMITED TO ANY ERRORS, OMISSIONS OR CHANGES IN ANY DOCUMENTS, OR (2) ANY LOSS OR DAMAGE OF ANY KIND (INCLUDING BUT NOT LIMITED TO ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR EXEMPLARY DAMAGES, ATTORNEYS’ FEES AND/OR COSTS) ARISING FROM, RELATING TO OR OTHERWISE INCURRED AS A RESULT OF THE USER’S USE OR VIEWING OF SAID DOCUMENTS ACCESSED, DOWNLOADED OR OTHERWISE OBTAINED THROUGH THIS SYSTEM.

Product Description

Cement based waterproofing for concrete. Mixed with MasterSeal A660 (1-1/2 quarts A660 with 4-1/2 quarts water per bag) and diluted with clean, potable water to produce a cementitious coating that is used to seal, waterproof and protect concrete and masonry substrates. Can be used on interior or exterior, above or below grade applications.

Benefits: 

  • Waterproof to help protect building interiors from dampness and moisture damage
  • Resistant to both positive and negative hydrostatic pressure, making MasterSeal 581 suitable for use below grade interior and exterior and in water treatment construction
  • Breathable, allowing interior moisture to escape without damaging coating
  • Compatible with high-performance coatings, including a wide range of architectural coatings and textured finishes
  • Hides minor surface defects and blemishes in architectural concrete
  • Certified to the NSF/ANSI Standard 61 for potable water contact

Applications:

  • Vertical surfaces
  • Interior and exterior
  • Above and below grade
  • Waterproofing basement and retaining walls
  • Foundations

Limitations: This product is not color uniform, adequately ventilate for proper curing in enclosed areas; not intended to be used as a wearing surface; protect surfaces not being coated; metal, glass and wood.

Coverage
1st Coat: 225 ft²/bag; 2nd Coat: 450 ft²/bag.
Initial Set
10 min @ 70°F
Final Set
90 min @ 70°F
Mixing (dilution ratio with A660)
1-part A660 (1-1/2 quarts) to 3-part water (4-1/2 quarts)
Mixing (total liquid needed per bag)
6 quarts
Re-coat time
24 hrs

Video

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