Del-Val 211 Flashing Cement - 5 Gallon Pail

For Repairs with Acrylic Systems


Acrylic Mastic

A Water-Based Roof Repair Mastic with Good Elongation & Great Tensile Strength!


Armour Proof AP-2300 Acrylic Mastic is an acrylic, heavy bodied elastomeric mastic. It offers good elongation and tensile strength properties, resisting lateral movement and allowing for expansion and contraction. Armour Proof AP-2300 Acrylic Mastic is used for many different applications, including cracks, seams, fasteners and penetrations. Use as part of a system with AP-3100 Acrylic Base Coat and AP-3200 Acrylic Finish Coat

good elongation and tensile strength properties, resisting lateral movement and allowing for expansion and contraction.

Where to Use AP-2300 Acrylic Mastic

Quick Application Guide

Time Before Coating

2–6 HRS



Apply AP-2300 by brush or trowel. When necessary, embed AP-8100 Series Polyester reinforcement into the wet product and smooth out free of all wrinkles and fishmouths. Roof coating may be applied after 2-6 hours of application.

Preparation of Substrate

Surface must be pressure washed clean, free of all loose particles, dirt debris and other contaminants that could inhibit adhesion. Refer to the Armour Proof Coatings Specification for detailed instructions on how to prepare the specific substrate.

Limitations and Precautions

AP-2300 is a water-based, elastomeric, acrylic coating and is not freeze-thaw stable. Do not apply AP-2300 when ambient air and substrate temperatures fall below 50° F, or if inclement weather is forecasted. Do not apply over wet substrates or in inclement weather. Do not apply if ambient temperature will drop below 32° F in a 24-hour period or dew will settle before coating is allowed to dry. Do not store sealed containers in prolonged sunlight. PROTECT FROM FREEZING DURING SHIPMENT AND STORAGE. Do not store material at temperatures below 45° F. It will freeze and may become unusable at temperatures below 32° F.

Note: Be sure to following your Armour Proof Coating Specification and/or Get in Touch with Your Local Rep.

Use as Part of a System with these products:

AP-3100 100% Acrylic Base Coat 2024 Rebrand in 5 Gallon Bucket


100% Acrylic Base Coat

AP-3200 100% Acrylic Finish Coat 2024 Rebrand in 5 Gallon Bucket


Acrylic Finish Coat

AP-3300 100% Acrylic Finish Coat in Specialty Colors 2024 Rebrand in 5 Gallon Bucket


Acrylic Finish Coat (Colors)

Product Information

Sizes Available

3 Gallon Capacity Pail

Tools Needed

Brush Tool Graphic
Trowel Tool Graphic


Available From These Distributors

Click a logo to find a location close to you.

ABC Supply Co Distributor Logo
Beacon Roofing Supply Distributor Logo
J & L Building Materials Inc. Distributor Logo
New Castle Building Products Distributor Logo
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Universal Supply Co Distributor Logo
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